SAMJ-MT ECD ANCHORprokcssmedia.blob.core.windows.net/sys-master-images/h82/...Ground anchor can be...

Human Removable Anchor(SAMJ-ECD)

Frictional Permanent Anchor(SAMJ-LFT)

www.3jsteel.co.kr

SAMJ-ECD / SAMJ-U TURN / SAMJ-LTF / SAMJ-LCDSAMJ-MT ECD ANCHOR

No.9061-1071 No.20110102725 VentureCertification

SAMJINSTEELINDUSTRY CO., LTD.

To be the leading company contributing to the development of

national construction industry in the 21 century, Samjin Steel

Industry will strive to manufacture the best and the

most advanced products based on constant R&D and technology.

Creativity, Creation, Credibility

Company For Customer, Customer-Oriented Service, and Endeavors for Customer Satisfaction

Samjin Steel Industry Co., Ltd. is a professional manufacturer of removable anchors

(SAMJ-ECD, SAM-U TURN, SAMJ-MT ECD), permanent Anchor(SAMJ-LTF,

SAMJ-LCD), temporary anchor, Soil nailing, and rock bolt. Providing a customer

satisfaction oriented products with high quality resulting from the Quality First

Management policies, Samjin has been endeavoring to provide products in the best

quality based on constant R&D investment and technological competences.

Also Samjin appreciates all the advice and support from customers that have

nurtured the growth of our company.

From CEO of Samjin Steel Industry, and employees

Company Philosophy

Management Direction

Message

02 SAMJIN STEEL INDUSTRIAL Products Catalog

HistoryFeb.

Jun.

Feb.

Oct.

Jan.

Feb.

Feb.

Jun.

Oct.

Dec.

Mar.

Sep.

May.

Aug.

Feb.

Dec.

Mar.

Apr.

May.

Nov.

Mar.

Mar.

Jul.

Oct.

Dec.

2001

2002

2003

2004

2007

2009

2010

2011

2012

Founded as Samjin Technology & Industry

Registered utility model (#0235117) : Reinforcing metal fixer

Relocated and expanded the factory

Registered utility model (#0292891) : Liner screw for reinforcing bar

Registered utility model (#0301035) : Bar fixer for supporting ground

Registered utility model (#0305688) : Barl fixer for supporting ground

Extended production facility

Changed the company foundation (Samjin Technology & Industry to Samjin Steel Industry Co., Ltd.)

Acquired Certification of Quality Management System (KS A 9001:2001 / ISO 9001:2000)

Registered patent (#0462129) : Bar fixer for supporting ground : fixing agent

Expanded & moved the factory

Extended production line for anchor

Registered a design (#30-0528286) : Waterproof cap for anchors

Registered a design (#30-0528291) : Nut for anchors

Acquired Certification of Technology Innovation Business (INNO-BIZ) #906-1071

Acquired Certification of Venture Business (#20090104637)

Registered a design (#30-0536353) : Body for anchors

Registered a patent (#10-0913320) : Multi-purpose hybrid anchor

Registered a patent (#10-0913201) : Development of removable ground anchor (SAMJ-ECD)

Registered a patent (#10-0944199) : PC anchor structure parallel with multi-bar nail

Registered a patent (#10-1003981) : Removable ground anchor

Registered a patent (#10-1025915) : Distributed pressurized compressed

multi-type permanent anchor

Relocation of HQ and factory (Daegot-myeon, Gimpo)

Registered a patent (#10-1038747) : Installation method for Distributed pressurized

compressed multi-type permanent anchor

Registered a design (#30-022583) : Anchor body frame

Established an Corporate R&D center (#2012110600) : Korea Industrial Technology Association

Selected as a Promising SMB by Kookmin Bank (#2012-15)

Registered a patent (#10-1167839) : Multi-purpose steel wire tension jack

Registered a patent (#10-1192931) : Cross-section fixtures of rockfall prevention of wire rope

Registered a patent (#10-1167839) : Multi-purpose steel wire tension jack

www.3jsteel.co.kr 03

Samjin Steel Industry Co., Ltd. has acquired diverse patents, utility models, and design registrations through sustained R&D efforts and quality management, which have been recognized through ISO9001 and certifications of Venture Business and INNOBIZ.

Certificate

Leadership in

Quality & Reliability


ContentsTypes of Anchor

Human Removable Anchor (SAMJ-ECD)

Equipment Removable Anchor (SAMJ- U TURN)

Pack Anchor

(SAMJ-ECD PACK, SAMJ-U TURN PACK)

Comparasion of Removable Anchors

Multi Type Removable Anchor (SAMJ-MT ECD)

Frictional Permanent Anchor (SAMJ-LTF)

Compressive Distributive Permanent Anchor

(SAMJ-LCD)

Material of Head,Wedge & Mechanical Properties

PC Strand Coupler, Earth Anchor Subsidiary Material

SAMJ-MT JACK

Tensioning Process (Prestressing)

Re-tensioning System

Production Facilities

Performance: Delivery of Goods

06 •07 •10 •11 •

13 •14 •15 •17 •

19 •21 •22 •23 •24 •25 •26 •

Types of Anchor

Application of Ground Anchor

Ground anchor can be categorized by service period, supporting method, installation angle or injection,

pressing method of grout material. Depending on the service period, anchors are divided into temporary

anchor and permanent anchor. Temporary anchor is widely used to temporarily support soil-cement blocks

or ground, while permanent anchor is for stabilization of slopes or prevention of roll-over and damages of

permanent structures. Depending on the support method of ground, it can be divided into frictional type

anchor, pressure type anchor and complex type anchor. Frictional type anchor is supported by friction

between grout and ground, and thus further categorized into tensioning anchor and pressing anchor, by the

way the load is applied on the grout. Based on the load distribution, it can be divided to load-centric type

anchor and load-distributing type anchor.

Ground Anchor

Tension TypeAnchor

Non-RemovableAnchor

Load-Concentrativetype Anchor

Equipment-RemovingAnchor

Temporary AnchorPermanent

Anchor

Compression TypeAnchor

Removable Anchor

Load-Distributingtype Anchor

Human-RemovingAnchor

Pressure typeAnchor

Frictional type Anchor

Complex type Anchor(Frictional + Pressure)

Categorization by Ground-Supporting Method Categorization by Service Period


Stabilization of Bridge Reinforcing Ground

for TunnelStabilization Tower-like Structures(incl. electric transmission tower)

Preventing Roll-overof Building

Earth Retaining Stabilizing Slope Prevention of Roll-over

of Retaining WallPrevention of Damage ofUnderground Structures

Human Removable Anchor (SAMJ-ECD)

Removable anchor is generally used for installation of earth-retaining temporary walls to reduce

additional process when developing adjacent soils by reducing remaining strand after the performance

period of installed anchor. The anchor is effective to increase the on-site build-ability by easy and

convenient separation, reunion of the strands.

Extractable Compressive Distributive

REMOVABLE ANCHORSAMJINSTEEL INDUSTRIAL


Characteristics

Anchor Body Frame & Components

① ② ③ ④ ⑤

⑥

⑦

⑧

① Waterproof Cap

② Spring

③ Body

④ Wedge

⑤ Head Coupler

⑥ P.C Strand

⑦ P.E Pipe

⑧ Anchor Body Frame

1. High applicability on grounds with the Compression-distributing type anchor

2. Environmentally friendly, and good for environment pollution, as no

using grease

3. Reduced cost of strand removal as it requires no additional

equipment to remove strands (removable by human)

4. Easy to use and manage quality as delivered on site as finished

products after factory assembly

5. Economic design by free application of numbers of strand

depending on the design load

6. Allows work on narrow work site

7. Guarantees precise anchor forces and reduces loss of tensile force

8. Allows reunion by counterclockwise rotation of the strand

9. Tension when load distribution appears as shown

in the figure on the right

·Cut the strand and when the body and spring move backwards, rotate in clockwise-direction to remove the

disjoined strand

·Hit the strand to remove it (shock absorbing by spring)

·Rotate the strand counter-clockwise, and reassemble


Material of Anchor Body Frame

Removing Order

Removal Method

Re-Assemble Method

Figure

Material GCD450(KS D 4302) ALDC12.1(KS D 2331)

Manufacturing Method Cast-iron technique Aluminum die-casting technique

Main Ingredient C, S, Mg Al, Cu, Si, Mg, Zn, Fea, Mn, Ni, Sn, Pb, Ti

Characteristics·High tensile strength

·Obvious anchor force secured

·Attached cross-sectional area is greater


Tesioning and SettlementCutting Strand

(Moving Wedge)Disassembly/Separation

(Clockwise Rotation)Removal of Strand


Model No. No. of steel strandUltimate Load

(kN)

Yield Strength

(kN)

Allowable Design

Load (kN)

Anchor Body

Frame (EA)

SAMJ-ECD-3 3 782 704 469 2

SAMJ-ECD-4 4 1,043 938 626 2

SAMJ-ECD-5 5 1,304 1,173 782 3

SAMJ-ECD-6 6 1,564 1,408 939 3

SAMJ-ECD-7 7 1,825 1,642 1,095 4

SAMJ-ECD-8 8 2,086 1,877 1,251 4

- Ultimate Strength (Tus) = 260.7kN (1 strand) - Yield Strength (Tys) = 234.6kN (1 strand)

- Allowable Design Load (Td) = 0.6 Tus - Allowable Lock-off Load = 0.7 Tus

- Stressing Load = 0.8 Tus - Reference FHWA-IF-99-015


(kN)

Yield Strength

(kN)

Allowable Design

Load (kN)

Anchor Body

Frame (EA)

SAMJ-ECD-3 3 795 699 497 2

SAMJ-ECD-4 4 1,060 932 663 2

SAMJ-ECD-5 5 1,325 1,165 828 3

SAMJ-ECD-6 6 1,590 1,398 994 3

SAMJ-ECD-7 7 1,855 1,631 1,159 4

SAMJ-ECD-8 8 2,120 1,864 1,325 4

- Ultimate Strength (Tus) = 265kN (1 strand) - Yield Strength (Tys) = 233kN (1 strand)

- Allowable Design Load (Td) = 0.625 Tus - Allowable Lock-off Load = 1.1 Td

- Stressing Load = 0.8 Tus - Reference BS-8081

Removable Anchor (SAMJ-ECD) 15.24mm

Removable Anchor (SAMJ-ECD) 15.70mm

[ASTM A-416 270 Grade, Low Relaxation]

[BS-5896 Super Grade, Low Relaxation]

Specification


Equipment Removable Anchor (SAMJ-U TURN)

Characteristics

1. Require 2~5 tons of initial pull-out force by the effects of bent parts when removing strand

2. Constant joint of anchor body frame sufficiently increases anchorage by distributing stresses on the

anchorage interface.

3. Ease of use and quality management as delivered on site as finished products after factory assembly

4. Due to the equipment-aided removal, it is difficult to remove strand on narrow working spaces




Figure








Conduct U-turn bending process using unbounded P.C strand (grease oil + polyethylene hose) and install

U-type anchor body frame on the rotational part of the wheel to join anchor cables. The anchor delivers

residual stresses first to P.C strand and to anchor body frame and then supports of anchor. For removal of P.C

strand, pull out a part of the strand using crane or applicable equipment after disassembly.

Pack Anchor (SAMJ-ECD PACK, SAMJ-U TURN PACK)

Pack anchor is applied when the ground is weak or when it is hard to ensure the pull-out force of existing

anchors. The pack installed on the anchorage whose grouting pressure expands to increase the friction against

ground maintains the stability between the anchorage and the ground.

Secondary Injection Hose

PACKER

Spacer

UN-PC Strand

Anchor Body Frame

Supporter

Outlet Hose

High-Density Packing

Secondary Injection Hose

PACKER

Spacer

PC Strand

Anchor Body Frame

Supporter

Outlet Hose

High-Density Packing

Detailed Assembly Diagram of SAMJ-U TURN Pack Anchor

Detailed Assembly Diagram of SAMJ-ECD Pack Anchor


Characteristics

1. Secures tensile force on grounds to which general earth

anchor is not applicable

(e.g. weak ground, reclaimed layer, gravel layer, sand layer)

2. Fast hardening & increased compression strength as only

water gets out of the packer at the injection and thus the

ratio of water to cement reduces.

3. Increases frictional resistance due to the pressure

grouting in the PACK

4. Cost reduction by the good tensile force of anchorage

which allow the length of anchorage to be shortened

5. Diameter enlarging effects by the pressure and forming

consistent fixer

Order of Installation


SAM J

SAM

JIN

SAM J

SAM J

JIN

SAM

SAM J

SAM J

SAM

JIN

SAM J

SAM J

JIN

SAM

SAM J

SAM J

SAM

JIN

SAM J

SAM J

JIN

SAM

SAM J

SAM J

SAM

JIN

SAM J

SAM J

JIN

SAM

SAM J

① Boring and Insertion of Anchor

③ Secondary Grouting (bulge pack, applying pressures)

② First Grouting and Pull-out of Casing for Anchorage

④ Pull-out of casing and third injection, completion


Comparasion of Removable Anchors

SAMJ-U TURN SAMJ-ECD

Figure

Overview

This anchor attains tensile forces by bending unbounded P.C strand to U-type anchor body frame to form anchorage and creating grout frictions.

This anchor attains tensile forces by inserting P.C strand into the PE waterproof pipe (for preventions of adhesion to grout along the overall anchor), and creating grout frictions.

Removal MethodCut a part of strand and pull out it using equipment to remove.

Cut the strand from the head part of the anchor after construction, and remove it by human agency by rotating it clockwise.

Advantages

● Quality management advantages as a factory assembly product

● High applicability for long-term construction due to the complete waterproofing, anti-corrosion

● Reduce the possibility of civil petition by less remained strand on the site after construction

● Reduced load as compressed type● Stable load on weak grounds

● Quality management advantages as a factory assembly product

● High applicability for long-term construction due to the complete waterproofing/anti-corrosion

● Reduce the possibility of civil petition by less remained strand on the site after construction

● Reduced load as compressed type● Exhibit stabilized weight secure condition

in poor ground ● Reduced cost by human agency removal

and easy to disposal of disjoined strands● Applicable on narrow work spaces

Disadvantages

● Hard to remove the strands with 3cm diameter as they are processed through U-type bending

● Requires higher costs to use heavy equipment to remove strands

● Difficult to adjust individual strands● High risk of contamination from grease● Concern of breakage of bent strand upon

yield loads● Hard to treat disjoined strand● Difficult to work on high or narrow

working sites

● Requires precision for anchor assembly● Higher cost of materials compared to

general friction anchors

Application Range Apply on private use of adjacent land Apply on private use of adjacent land

Economics● Anchor: economic● Removal Cost: relatively high

● Anchor: relatively high● Removal Cost: economic

Method

ComparisionItems


Multi Type Removable Anchor(SAMJ-MT ECD)

MT-type removable anchor efficiently distributing tensile loads on

anchorage section, using multi-layered strands joined on the head of

anchorage with different lengths. As the tensile load is distributed to parts

and thus reduced, the anchor is not fragile to the grout stength while

effective for securing anchorage strengths on relatively weak ground.

(MT-Multi, E-Extractable, C-Compressive, D-Distributive)

Characteristics

1. MT-type removable anchor did not cover the extended helix state

for pc strand by tightly coupled with the grouting Improves settlement

efficiency due to frictional forces can get the high anchor force

2. High stability of anchor as the individual tensile composite works as

an independent anchor

3. Maximizes ground fixing effect while reducing loss of stresses (e.g.

reduction by creep), as the stresses are distributed evenly on the

ground through the anchor tendon

4. Diameter of holes tends to increase depending on the design load

when using general removal anchors, MT anchor provides maximized

fixing resistence effects with minimized diameter through constantly

connected anchorage units.

5. Good applicability as the individual tensile composite works as an

independent anchor

6. Tension when load distribution appears as shown in the figure on the

right


Anchor B

ody F

ram

eREMOVABLE ANCHORSAMJINSTEEL INDUSTRIAL

Pressure Grip Sleeve

P.C STRAND

Grout Hose

P.E. HOSE

Anchor Body Frame Spacer

SECTION A-A’ SECTION B-B’

Frictional Permanent Anchor(SAMJ-LTF)

Characteristics

Permanent anchor is a double friction anchor preventing corrosion. It is widely used in local and overseas

market, and applied for reinforcing retaining wall, stabilization of slope and prevention of buoyancy. Currently,

permanent anchors are widely applied for high towers or bridge bases where overload is applied, as well as

plant, dam, and tunnel.

1. Most widely applied and generalized product

2. Economic design by free application of numbers of strand

3. Categorized into Closed Type and Open Type depending on the waveform duct installation condition of

injection hoses

4. Easy to use and manage quality as finished products (after factory assembly) are delivered on site

Lasting Tensile and Frictional Anchor

PERMANENT ANCHORSAMJINSTEEL INDUSTRIAL

CLOSE TYPE OPEN TYPE


OPEN TYPE CLOSE TYPE

Anchor Cap

Anch

ora

ge

Bond L

ength

Fre

e Le

ngth

Anchor Head

Wave Duct

Wire Bending

Outer Grout Hose

Supporter

Heat Shrinkable Tubing (Silicon and Taping)

Spacer

PC Strand

Epoxy

Nose Cone

Bearing Plate

Inner Grout Hose

Water Stop

Sleeve

Subslab Concrete

Epoxy

Sprial Rebar

Model No.No. of steel

strand

Ultimate Strength

(kN)

Yield Strength

(kN)

Allowable Design Load

(kN)

SAMJ-LTF-3 3 782 704 469

SAMJ-LTF-4 4 1,043 938 626

SAMJ-LTF-5 5 1,304 1,173 782

SAMJ-LTF-6 6 1,564 1,408 939

SAMJ-LTF-7 7 1,825 1,642 1,095

SAMJ-LTF-8 8 2,086 1,877 1,251

SAMJ-LTF-9 9 2,346 2,111 1,408

SAMJ-LTF-10 10 2,607 2,346 1,564

SAMJ-LTF-11 11 2,868 2,581 1,721

SAMJ-LTF-12 12 3,128 2,815 1,877

SAMJ-LTF-13 13 3,389 3,050 2,034

SAMJ-LTF-14 14 3,650 3,284 2,190

SAMJ-LTF-15 15 3,910 3,519 2,346

SAMJ-LTF-16 16 4,171 3,754 2,503

SAMJ-LTF-17 17 4,432 3,988 2,659

SAMJ-LTF-18 18 4,692 4,223 2,816

SAMJ-LTF-19 19 4,953 4,457 2,972

- Ultimate Strength (Tus) = 260.7kN - Yield Strength (Tys) = 234.6kN- Allowable Design Load (Td) = 0.6 Tus - Stressing Load = 0.8 Tus- Allowable Lock-off Load = 0.7 Tus - Reference FHWA-IF-99-015

Model No.No. of steel

strand

Ultimate Strength

(kN)

Yield Strength

(kN)

Allowable Design Load

(kN)

SAMJ-LTF-3 3 795 699 398

SAMJ-LTF-4 4 1,060 932 530

SAMJ-LTF-5 5 1,325 1,165 663

SAMJ-LTF-6 6 1,590 1,398 795

SAMJ-LTF-7 7 1,855 1,631 928

SAMJ-LTF-8 8 2,120 1,864 1,060

SAMJ-LTF-9 9 2,385 2,097 1,193

SAMJ-LTF-10 10 2,650 2,330 1,325

SAMJ-LTF-11 11 2,915 2,563 1,458

SAMJ-LTF-12 12 3,180 2,796 1,590

SAMJ-LTF-13 13 3,445 3,029 1,723

SAMJ-LTF-14 14 3,710 3,262 1,855

SAMJ-LTF-15 15 3,975 3,495 1,988

SAMJ-LTF-16 16 4,240 3,728 2,120

SAMJ-LTF-17 17 4,505 3,961 2,253

SAMJ-LTF-18 18 4,770 4,194 2,385

SAMJ-LTF-19 19 5,035 4,427 2,518

- Ultimate Strength (Tus) = 265kN - Yield Strength (Tys) = 233kN- Allowable Design Load (Td) = 0.5 Tus - Stressing Load = 0.8 Tus - Allowable Lock-off Load = 1.1 Td - Reference BS-8081

Frictional Permanent Anchor (SAMJ-LTF) 15.24mm

Frictional Permanent Anchor (SAMJ-LTF) 15.70mm



Specification



Waterproof Cap Pressire Grip Head Coupler

Compressive Distributive Permanent Anchor(SAMJ-LCD)

Characteristics

Assembly Diagram

Compressive distributing permanent anchor increases the force of anchor by cement grout which increases

the forces of friction and adhesion on ground and anchor body frame.

The anchor uses unbounded PC steel strand (grease oil + H.D.P.E hose), waveform duct for perfect

waterproofing, and thus is widely applied to reinforcing retaining wall, stabilize slope and prevent and thus is

widely applied to reinforcing retaining wall, stabilize slope and prevent buoyancy.

Lasting Compressive Distributive

Components

① ③② ④ ⑥

⑤

Grip Sleeve

SizeBefore Pressure After Pressure

External Diameter(Ø) Length(mm) External Diameter(Ø) Length(mm)

12.7mm 28 42 25 50

15.2mm 34.5 53 30.5 63


① Waterproof Cap ② Head Coupler ③ Grip Sleeve ④ Insert (Spring)

⑤ U-P.C Strand and Pressure Grip ⑥ Anchor Body Frame

1. Through applying the load concentration on ground reduces Creep by load

2. No free-field binding effect by completely protecting the tensioning material

3. Allow the adjustment of inserted inner tool depending on the ground condition

4. Maximizes the performance of strand by individually fastening inner inserted

staying tools with Grip

5. Easy to use and manage quality as finished products after assembly are

delivered on site

6. Tension when load distribution appears as shown

in the figure on the right


(kN)

Yield Strength

(kN)

Allowable Design

Load (kN)

Anchor Body Frame

(EA)

SAMJ-LCD-4 4 1,043 938 626 2

SAMJ-LCD-6 6 1,564 1,408 939 3

SAMJ-LCD-8 8 2,086 1,877 1,251 4

SAMJ-LCD-10 10 2,607 2,346 1,564 5

- Ultimate Strength (Tus) = 260.7kN (1 strand) - Yield Strength (Tys) = 234.6kN (1 strand)

- Allowable Design Load (Td) = 0.6 Tus - Allowable Lock-off Load = 0.7 Tus

- Stressing Load = 0.8 Tus - Reference FHWA-IF-99-015


(kN)

Yield Strength

(kN)

Allowable Design

Load (kN)

Anchor Body Frame

(EA)

SAMJ-LCD-4 4 1,060 932 530 2

SAMJ-LCD-6 6 1,590 1,398 795 3

SAMJ-LCD-8 8 2,120 1,864 1060 4

SAMJ-LCD-10 10 2,650 2,330 1325 5

- Ultimate Strength (Tus) = 265kN (1 strand) - Yield Strength (Tys) = 233kN (1 strand)

- Allowable Design Load (Td) = 0.5 Tus - Allowable Lock-off Load = 1.1 Td

- Stressing Load = 0.8 Tus - Reference BS-8081

Compressive Distributive Permanent Anchor (SAMJ-LCD) 15.24mm

Compressive Distributive Permanent Anchor (SAMJ-LCD) 15.70mm



Specification




Figure








Material of Head, Wedge & Mechanical Properties

Tensile Head

ANCHOR subsidiary materialsSAMJINSTEEL INDUSTRIAL

Head, Pressure Grip

Tensile Strength(N/mm2)

Ductility(%)Yield

Strength(N/mm2)

Hardness(HB)

Chemical Composition

C Si Mn P S

Min 569 Min 20 Min 343 167-229 0.42~0.48 0.15~0.35 0.60~0.90 Max 0.030 Max 0.035

Material: Mechanical Structural Carbon Steel (SM45C, KS D3752)

Tension Testing Specimen Pressure Grip Head and Strands (12.7mm, 15.2mm)

WEDGE(12.7mm, 15.2mm)

Type

Code

Reference Chemical Composition

Previous Code

C Si Mn P S Ni Cr Mo

SNCM420 SNCM 23 0.17~0.23 0.15~0.35 0.40~0.70 0.030 이하 0.030 이하 1.60~2.00 0.40~0.65 0.15~0.30

Material: Mechanical Structural Alloy Steel (SNCM420, KS D3867)

Rectangular (4P)

7P

Square (4P)

8P

5P

10P

5P

12P

6P


※Wedge tensile testing is conducted after joining wedge and anchorage devices on the both edge of P.C strands. The testing bases on the P.C Strand Criteria, and check the status of the wedge upon the breakage. (SWPC7B 12.7mm)

※ Other products in addition to the above products are available for customization

Product Specification

ANCHOR subsidiary materialsSAMJINSTEEL INDUSTRIAL

Product Name

Strand 0.5”(12.7mm) Strand 0.6”(15.2mm)

Number of Strand

External Diameter

(Φ)

Thickness(T)

Hall Distance

(T)

Number of Strand

External Diameter

(Φ)

Thickness(T)

Hall Distance

(T)

Single Cone 1 40 43 - 1 45 43 -

Multi Cone 3 110 43 29 3 110 50 32

Multi Cone 4 110 43 29 4 110 50 32

Multi Cone 5 110 43/50 29 5 110 50 32

Multi Cone 6 110 43/50 29 6 140 50 32

Multi Cone 7 110 43/50 29 7 150 50 32

Multi Cone 8/10 140/150 45/50 29 8 150 55 32

Multi Cone 9 140 45/50 29 9 150 55 32

Multi Cone 11/12 150 50/55 29 10 150 55 32

Multi Cone 19 190/200 60/65 29 12 150 55 32

Permanent, Buoyant Head

Angled Head, Connecting Head

Anchors protection cap by installing oiling on the side

Screw-Type Head Anchors protection cap and re-jacking using screw lines on the side


Angled Head(Used for slope when reinforcing earth retaining walls)

Connecting Head(Used when the length of strand is insufficient)

※ Other products in addition to the above products are available for customization

Removable

8ⅹMedium

12 X Large

8ⅹSmall

12 X Medium

SPACER PACKER Covering Material

TypesSize (External

Diameter/Thickness) m/m

Number of Strands

TypesSize (External


TypesSize (External


5P 80 / 25 5 3-9 300 / 900 3-2 2 / 90

8 Small 61 / 19 8 3-10 300 / 1000 3-2.5 2.5 / 90

8 Medium 68 / 22 8 3-12 300 / 1200 3-3 3 / 90

7 Small 60 / 07 7 3-15 300 / 1500 3-4 4 / 90

10P 70 / 23 10 3-20 300 / 2000 3-5 5 / 90

12 Small 71 / 24 12 3-6 6 / 90

12 Medium 82 / 26 12

12 PC 72 / 23 12

12 Large 90 / 23 12

21 Large 98 / 20 21

PC Strand Coupler

Subsidary Materials of Earth Anchors

PC strand coupler connects short PC strands to form a long one. When strands are inserted in to the coupler,

it holds strands on both sides easily using the spring inside. The coupler is widely used to connect shorter

strands together to deliver the load and stresses as intended.

① The external diameter of spacers are based on the specification of assembly of strand wire and strands

② Products can be manufactured on demand

Standard Diameter(Φ) Length

Φ12.7 49 119

Φ15.2 54 119

SPACER Covering Material

PACKER


SAMJ-MT JACK

Connecting strands in different length and deflection may lead to inconsistence tensile force. MT- JACK was

developed to address this problem can distribute consistent tensile force to several strands without bending

them at the same time. The miniaturization of the MT-JACK increases ease of use and convenience.

Multipurpose steel wire tension jack

Product Specification

MODEL NO.Cross-Section

Area of Oil Pressure (cm2)

Max Pressure (kg/cm2)

Max Tensile Force(ton)

JACK Measurement

Storke D d h

MONO JACK 47.12 500 23.560 150 35 85

MONO JACK 26.11 700 18.277 150 30 65

SAMJ58T5S 83.01 700 58.107 117 95 140 240

SAMJ60T5S 122.5 500 61.250 120 78 195 280

SAMJ60TON 86.59 700 60.613 100 100 145 250

SAMJ74T5S 105.97 700 74.179 90 110 160 270

SAMJ90T5S 131.94 700 92.358 130 110 170 280

SAMJ100T5S 159.43 700 111.601 150 110 180 320

SAMJ150T6S 217.38 700 152.166 150 150 224 320

SAMJ203TON 290.26 700 203.182 150 175 260 470

Tensioning ProcessSAMJINSTEEL INDUSTRIAL


CENTER HOLE JACK

● 1bar = 1.019kgf/cm2

● 1br = 10N/cm2

● 1ba = 14.5psi

● 1psi = 0.069bar

● 1ton = 1,000kg

● 1Newton(N) = 0.102kgf

● 1Kgf = 9.81N

● 1N/cm2 = 10kPa

● 1mm = 0.039in

● 1in = 25.4mm

● 1cm2 = 0.155in2

● 1in2 = 6.452cm2

● 1cm2 = 0.061in3

● 1in3 = 16.387cm2

● 1gal(UL) = 4.4561

● 1ℓ= 0.220gal(UK)

● 1ℓ= 61.02in3

● 1kg = 2.204Ib

● 1Ib = 0.453kg

● 1kw = 1.359PS

● 1PS = 0.735kw

● 1Nm = 0.102kpm

● 168,85 = 0.13825kpm

Unit Conversion Chart

Prestressing (General Anchor)

It stresses strands at the same time by applying pressure to a point inside of the closed cylinder using

ELECTRIC POWER HYDRAULIC PUMP, and then distributing as much oil pressure as the pressure to all the

points of the target.

P = (kgf/cm2) = ∴

= Guage pressure(kgf/cm2)

Intended Magnitude of Force(kg)-----------------------------

Cylinder Area(cm2)

F---A

Tensile Order of CENTER HOLE JACK

Calculation for tensile gauge pressure / Calculation for gauge pressure

FORCE + = (Force) + (Cylinder Area) = Guage Pressure from Pump Output


① Insert the assembly panel on the anchor head, install the jack and tensile plate and wedge on it

② Install subsidiary components for tension and get ready

④ Restore the pump pressure after the prestressing and complete anchorage by disassembling the cylinder

③ Perform prestressing until the prestress force is reached


Re-Prestressing System

1. Easily connected with head caps using the screw

lines on side of head

2. Able to restress using bracket installed on the

existing tensile jack

3. Relatively reduced cost and time compared to the

existing head cap installation methods

Ground anchors inevitably lead to not only creep of ground and relaxation of tensile components, but also loss

of tensile force due to the characteristics of the anchor system on the introduction stage. In that the lifespan of

permanent anchor should be consistent with that of the applicable structures, the represtressing for durability

and maintenance of anchors is important.

Represtressing system provides the capability of restressing by complementing those defects, and ensures the

designed lifespan of permanent anchors.

Tensioning ProcessSAMJINSTEEL INDUSTRIAL

Characteristics

Order of Restressing

Screw-Type Head Screw-Type Head (side view)

① Ready for restressing ② Apply intended tons of stresses to lift up the head

③ Insert shim plate not to lose the pressure applied in between base and the vacant space

④ Restore the pump pressure after the restressing, and move the cylinder backwared to disjoin

www.3jsteel.co.kr

A Block : Anchor Production Line

B Block : Manufacturing & Processing Anchor Components

·Daily Production at Max: 8,000~10,000M Anchors

Production FacilitiesSAMJINSTEEL INDUSTRIAL

Production Facilities

Item Size Numbers

Processing

CNC Automatic Lathe 8" 4

CNC (Bar Feeder) - Exclusive for Wedge Production 8" 1

Lathe 10" 1

Drill Up Light 6

Tapping Machine 4

Wedge Cutter 4

Milling Machine (2nd) 1

Anchor Assembly

Auto Strand Injector (1st) 12.7Ø , 15.2Ø : 50M 1

Auto Strand Injector (2nd) 12.7Ø , 15.2Ø : 50M 1

Grease Injector for Permanent Anchor 12.7Ø , 15.2Ø : 55M 1

Temporal Anchor Assembler 12.7Ø , 15.2Ø : 30M 1

25

Performance: Delivery of Goods

Constructor Project Name Total Length(m) Product Type

DSME Asan Yonghwa Elcru Apartment Construction 9,600 SAMJ-ECD

Hoban Construction Hwasung Dongtan 2 New Town Hoban Vertium Construction 14,600 SAMJ-ECD PACK

Chin Hung International Ulsan Woojeong Hyeokshin A3BL Apartment Construction - District 3 7,400 SAMJ-ECD

Doosan E&C Ilsan Tanhyeon Doosan We've The Zenith Construction 60,000 SAMJ-ECD

Hyundai E&C / Doosan E&C Busan Haewoondae Hill State We've Construction 120,000 SAMJ-ECD

Kukdong Construction Seo-Incheon St. Mary's Medical Center Construction 85,000 SAMJ-ECD

Hanyang Corporation Incheon Gumdan Hyundai 6th Hill State Construction 9,000 SAMJ-ECD

Daewoo E&C Mapo Ahyeon-dong Residential Apartment Redevelopment 20,000 SAMJ-U TURN

Lotte E&C Bulgwang-dong Residential Apartment Redevelopment - District 4 17,500 SAMJ-ECD

Moa Construction Gimpo Moamiraedo Elgaa Construction 13,000 SAMJ-ECD

Daewoo E&C Goyang Wonheung Bogumjari Residential Development 12,000 SAMJ-LTF

Shinsegae E&C Uijeongbu E-Mart Construction 20,000 SAMJ-ECD

Ultra Constructions & Engineering

Woomyeon-dong Bogumjari Residential Developemnt 11,000 SAMJ-LTF

Keangnam Enterprises Gunpo Dang-dong Gyeongnam Honorsville Apartment Construction 8,000 SAMJ-ECD

Daewoo E&C Sejong City Purgio City Apartment 2nd Site Construction 10,000 SAMJ-ECD

Hanyang Corporation Gwangju Cheomdan Hanyang Soo-Jain Apartment Construction - District 2 12,000 SAMJ-ECD

Hyosung Changwon Hyosung Baeknyeongayak Apartment Construction 9,000 SAMJ-ECD

Kumho E&C Asiana Airlines Parking Lot Construction 10,000 SAMJ-ECD

Kangsan Construction Wangsimni Ggotjae Korean Methodist Church Construction 6,000 SAMJ-ECD

Hyundai Development Company

Gangnam Sungbo Apartment Reconstruction 10,000 SAMJ-ECD

POSCO E&C Incheon Subway 206 Section Construction 18,000 Temporary Anchor

Cullinan Construction Seongnam Urban Nature Park Development 11,000 SAMJ-LTF

Daelim Corporation Chuncheon Soyangro Daelim e-Pyeonhansesang Apartment Construction 15,000 SAMJ-ECD

KCC E&C Pangyo Inno-Valley Cluster Development 28,000 SAMJ-ECD

Samhwan Corporation Magok District Urban Development 7,000 SAMJ-ECD

U-Top Engineering Architects Gangnam U-Top Ubless Construction 11,000 SAMJ-U TURN

U-Top Engineering Architects Namak U-Top Ubless Construction 6,500 SAMJ-U TURN

Performance: Delivery of GoodsSAMJINSTEEL INDUSTRIAL


Constructor Project Name Total Length(m) Product Type

Iris Construction Gimjae IG Park Construction 9,600 SAMJ U-TURN

Jeil E&C Gwangju Seonwoon District EGthe1 Construction 14,600 SAMJ-ECD

Daewoo E&C Shin Bundang DX Line Extension Construction - District 2 7,400 SAMJ-ECD

Daelim Corporation Shin Bundang DX Line Extension Construction - District 3-1 60,000 SAMJ-ECD

POSCO E&C Shin Bundang DX Line Extension Construction - District 5 120,000 SAMJ-ECD

Toein Construction Baekgwang Golfland Development 85,000 SAMJ-ECD PACK

Daelim Corporation Incheon Airport Railway Facility Expansion Construction 9,000 SAMJ-ECD

Korea Development Corporation

Gimhae Boowon Station Purgio Apartment Construction 20,000 SAMJ-ECD PACK

Samsung Heavy Industries Indeokwon IT Valley Construction 17,500 SAMJ-ECD

POSCO E&C Suseo-Pyeongtaek Metro High-Speed Railway Construction - District 7 13,000 Temporary Anchor

GS E&C Suseo-Pyeongtaek Metro High-Speed Railway Construction - District 9 12,000 SAMJ-ECD

POSCO E&C Ttuksum Filtration Plant Construction 20,000 SAMJ-ECD

Samsung C&T Corporation Daechi-dong Chungsil Apartment Reconstruction 11,000 SAMJ-ECD

Hanyang Corporation Gwangju Asiad Apartment Construction - Section 1 8,000 SAMJ-ECD PACK



GS E&C Wangsimni Apartment Construction 9,000 SAMJ-ECD

Taeyoung E&C Incheon Subway 204 Section Construction 10,000 SAMJ-ECD

Wooseok Construction Sejong City The Rich Morning of Lake Officetel Construction 6,000 SAMJ-ECD

GS E&C Namgajwa-dong Gajewool Newtown Development - District 4 10,000 SAMJ-ECD

POSCO E&C Shin Bundang DX Line Extension Double Track Construction - District 5 18,000 Temporary Anchor

Lotte E&C Paju Woonjeong New Town Lotte Castle Construction 11,000 SAMJ-ECD

Lotte E&C Icheon Lotte Premium Outlet Construction 15,000 SAMJ-ECD

DSME Asan Yonghwa Elcru Apartment Construction 28,000 SAMJ-ECD

Hoban Construction Hwasung Dongtan 2 New Town Hoban Vertium Construction 7,000 SAMJ-ECD PACK

Chin Hung International Ulsan Woojeong Hyeokshin A3BL Apartment Construction - District 3 11,000 SAMJ-ECD

U-Top Engineering Architects

Namak U-Top Ubless Construction 6,500 SAMJ-U TURN


Daegot-myeon office

Yangchon-eup office

Ganghwa bridge Ganghwa bridge

Janggi District

Seoul, Embarkment road

Gimpo City Hall

Hangang New Town

Inchon, GumdanGyeongdong Cargo

SK Gas stationKosamart

Coastal Road

Sunam Elementary School

Choji-bridgeSAMJINSTEELINDUSTRY CO., LTD.

SAMJINSTEELINDUSTRY CO., LTD.

Road #401-73, Daegotnam-ro, Daegot-myeon, Gimpo, Gyeonggi-do, South Korea(406-1, Daeneung-ri, Daegot-myeon, Gimpo, Gyeonggi-do, South Korea)Tel_ +82.31.997.2943 Fax_ +82.31.997.2948 International Dept_ 070.4694.2940 E-mail_ [email protected]

www.3jsteel.co.kr

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