CN207159991U - A kind of I-shaped steel joint for being welded with peg - Google Patents

A kind of I-shaped steel joint for being welded with peg Download PDF

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Publication number
CN207159991U
CN207159991U CN201721068118.3U CN201721068118U CN207159991U CN 207159991 U CN207159991 U CN 207159991U CN 201721068118 U CN201721068118 U CN 201721068118U CN 207159991 U CN207159991 U CN 207159991U
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CN
China
Prior art keywords
steel
plate
steel plate
welded
joint
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Withdrawn - After Issue
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CN201721068118.3U
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Chinese (zh)
Inventor
贺维国
江水德
江婕瑞
徐玉峰
杨世东
朱剑平
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China Railway Liuyuan Group Co Ltd
Original Assignee
China Railway Liuyuan Group Co Ltd
CRTG Survey and Design Institute Co Ltd
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Priority to CN201721068118.3U priority Critical patent/CN207159991U/en
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Publication of CN207159991U publication Critical patent/CN207159991U/en
Withdrawn - After Issue legal-status Critical Current
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Abstract

A kind of I-shaped steel joint for being welded with peg, it the utility model is related to the underground continuous wall construction technique field in foundation pit enclosure structure;The two sides of web are close to be located at a phase diaphram wall section and the second stage of diaphram wall respectively, and two block wing plates of the phase diaphram wall section steel reinforcement cage respectively with I-steel weld;Described plugging plate is arranged in the groove by the second stage of diaphram wall side I-steel, and the web of the groove of plugging plate towards I-steel is set;The middle part of described web, ordered series of numbers peg is welded with by the second stage of diaphram wall side.The clear mud of I-shaped steel brush wall need not be carried out, I-steel is isolated with mud, ensures I-steel cleaning;I-steel web is welded with peg, and peg is anchored into the second stage of diaphragm wall section concrete, and joint anti-bending bearing capacity is high, and joint non-deformability is strong, improves the impermeability of I-shaped steel joint, and practicality is stronger.

Description

A kind of I-shaped steel joint for being welded with peg
Technical field
It the utility model is related to the underground continuous wall construction technique field in foundation pit enclosure structure, and in particular to one kind is welded with The I-shaped steel joint of peg.
Background technology
Subway station and basement in high rise building construction are required to perform vertical soil-baffling structure, vertical soil-baffling structure master at present Have the forms such as drilled pile, diaphram wall, the stake of SMW engineering methods, steel sheet pile, cement mixing wall, when foundation ditch compared with it is deep, soil response is strong When spending that relatively low, water level is higher, there is structure building on foundation ditch periphery, vertical soil-baffling structure uses diaphram wall mostly.Underground is continuous Wall is typically to divide what wall section performed along foundation ditch periphery, typically first performs a phase diaphram wall section, waits a phase diaphram wall strong After degree reaches design strength, then perform the second stage of diaphram wall section, a phase diaphram wall section and the second stage of diaphram wall section it Between be provided with I-shaped steel joint, cross steel plate joint or fore shaft pipe joint etc..
Cross steel plate joint is made up of cross steel plate and slide type joint case, when to the integral rigidity or anti-of diaphram wall Used when being impregnated with particular/special requirement, its advantage is:1) steel plate is provided among the joint, extends permeable blind ditch, leakage performance Preferably;2) shear behavior is preferable;But its shortcoming is:1) process is more, and construction is complicated, and difficulty is larger;2) brush wall and removing wall section side Wall mud has certain difficulty;3) anti-bending strength is undesirable;4) steel plate dosage is more, and cost is higher.
When diaphram wall uses I-shaped steel joint, it is necessary to abdomen to I-steel after the second stage of diaphram wall section grooving Plate and wing plate carry out brush wall skin process native clearly.Be not in percolating water at I-shaped steel joint when in theory, using I-shaped steel joint Problem.But in Practical Project, often occurs percolating water at I-shaped steel joint, its result will cause foundation ditch periphery place underground Water level decreasing and surrounding buildings settlement cracking.Arranged so often also needing to perform extra sealing on the outside of I-shaped steel joint (for example, mixing pile, high-pressure rotary jet grouting pile) is applied, duration and increase construction costs will certainly be extended by performing extra measures of preventing water.
If part of the diaphram wall as underground agent structure, it is necessary to permanent durable, the overall ne-leakage of structure. The wall that each section of diaphram wall can meet design requirement, and composition each intersegmental attachment structure of diaphram wall is that underground is continuous Wall system key core link.If helped at present using diaphram wall as agent structure exterior wall, it is necessary to be performed in joint area Pilaster and measures of preventing water, it so can undoubtedly increase construction costs.
I-shaped steel joint percolating water has the reason for following aspect between causing diaphram wall:1) web of I-shaped steel joint and Wing plate wall is locally stained with mudcake, and the clear mud of brush wall has mass defect;2) I-shaped steel joint bending resistance is low, the second stage of diaphram wall The concrete of section only has bonding with I-shaped steel joint wall, and adhesive strength is relatively low, and I-shaped steel joint both sides pit earthwork excavates and branch Support, which is set, inconsistent easily to be caused and is ftractureed between I-shaped steel joint and concrete;(3) contraction can be produced in course of hardening, Gap can be produced between I-shaped steel joint and concrete.Therefore, I-shaped steel joint leakage problems between diaphram wall to be solved, are needed To improve from the following aspect:1) the clear shale amount of I-shaped steel joint brush wall is improved, but the clear mud of I-shaped steel joint brush wall is under water Carry out, can not check and monitor;2) bending resistance improved between I-shaped steel joint and the concrete of the second stage of diaphram wall section is strong Degree;3) measures of preventing water is taken between I-shaped steel joint and concrete.
So how to improve anti-bending bearing capacity between underground I-shaped steel joint and the second stage of diaphram wall section concrete and resist Seepage property, the clear shale amount of the I-shaped steel joint brush wall even cancellation clear bricklayer's's sequence of I-shaped steel joint brush wall is improved, put in ability Technological difficulties in face of the engineers and technicians of domain.
Utility model content
The defects of the purpose of this utility model is to be directed to prior art and deficiency, there is provided a kind of simple in construction, design is closed Reason, the I-shaped steel joint for being welded with peg easy to use, it is not necessary to carry out the clear mud of I-shaped steel brush wall, I-steel and mud every From guarantee I-steel cleaning;I-steel web is welded with peg, and peg is anchored into the second stage of diaphragm wall section concrete, and joint bending resistance is held It is high to carry power, joint non-deformability is strong, improves the impermeability of I-shaped steel joint, and practicality is stronger.
To achieve the above object, the technical solution adopted in the utility model is:It includes I-steel, peg and plugging plate structure Into;Two block wing plates of the described I-steel by one block of web and positioned at web both sides are welded;The two sides of described web Be close to be located at a phase diaphram wall section and the second stage of diaphram wall respectively, and a phase diaphram wall section steel reinforcement cage respectively with Two blocks of wing plates welding of I-steel;Described plugging plate is arranged in the groove by the second stage of diaphram wall side I-steel, and The web of the groove of plugging plate towards I-steel is set;The middle part of described web, it is welded with by the second stage of diaphram wall side Ordered series of numbers peg.
Further, described plugging plate is by bottom land steel plate, side steel plate, floor, rubber slab, top rubber plate, first Top steel plate and the second top steel plate are formed;Wherein bottom land steel plate be arranged in parallel with web, and side steel plate be arranged in parallel with wing plate, And set with wing plate in certain distance, one end of two blocks of side steel plates is welded with bottom land steel plate respectively;The second described top steel Plate is located at the top surface of side steel plate, and is welded with side steel plate, and the second top steel plate is vertically arranged with bottom land steel plate, and and bottom land Steel plate welds;First top steel plate is located at the top of the second top steel plate, and is set with the second top steel plate in certain distance, the One top steel plate is vertically arranged with bottom land steel plate, and is welded with the medial surface of bottom land steel plate;Top rubber plate is folded in the first top Between portion's steel plate and the second top steel plate;Two slat gum plates are folded between two blocks of side steel plates and two blocks of wing plates respectively, and rubber The contact surface vulcanization of offset plate and top rubber plate connects;The medial shaft of described side steel plate is interval with polylith floor upwards, And floor welds with bottom land steel plate and side steel plate respectively.
Further, the thickness of described rubber slab is more than the spacing between side steel plate and I-steel wing plate.
Further, described rubber slab is big by the thickness ratio other end of one end of bottom land steel plate.
Further, connected between described rubber slab and side steel plate by bolt and viscose glue.
Further, the bottom of described plugging plate, and it is provided with bottom end steel plate by the second stage of diaphragm wall side positioned at I-steel; Bottom end steel plate is welded with web and wing plate respectively, and sealant sealing is used between plugging plate and bottom end steel plate.
Further, the outer top surface of described bottom end steel plate welds several nuts, and nut is provided with corresponding bolt.
Further, two flute profile fasteners are provided between described plugging plate and web top, the flute profile fastener is U-shaped Steel plate, the centre of flute profile fastener are provided with two circular holes, elongated hole are provided with the wing plate of circular hole correspondence position, flute profile fastener passes through spiral shell Bolt is fixedly connected with wing plate.
After said structure, the utility model has the beneficial effect that:A kind of work for being welded with peg described in the utility model Word steel joint, it is not necessary to carry out the clear mud of I-shaped steel brush wall, I-steel is isolated with mud, ensure I-steel cleaning;I-steel abdomen Plate is welded with peg, and peg is anchored into the second stage of diaphragm wall section concrete, and joint anti-bending bearing capacity is high, and joint non-deformability is strong, carries The impermeability of high I-shaped steel joint, practicality is stronger, and the utility model has simple in construction, and it is reasonable to set, low manufacture cost The advantages that.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only It is some embodiments of the utility model, for those of ordinary skill in the art, before creative labor is not paid Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is horizontal profile schematic diagram of the utility model in wall.
Fig. 2 is the utility model horizontal profile schematic diagram in the second stage of continuous wall trench underground operating mode.
Fig. 3 is plugging plate bottom vertical cross section schematic diagram in the utility model.
Fig. 4 is plugging plate top vertical cross section schematic diagram in the utility model.
Fig. 5 is plugging plate horizontal profile schematic diagram in the utility model.
Fig. 6 is plugging plate elevational schematic view in the utility model.
The flute profile fastener schematic diagram installed in this utility model of Fig. 7 at the top of plugging plate.
Fig. 8 is flute profile fastener schematic diagram in the utility model.
Fig. 9 is rubber slab schematic diagram in the utility model.
Figure 10 is the horizontal schematic cross section of embodiment.
Description of reference numerals:
Wing plate 1, web 2, peg 3, plugging plate 4, bottom land steel plate 41, side steel plate 42, floor 43, rubber slab 44, first Top steel plate 45, nut 46, bolt 47, top rubber plate 48, the second top steel plate 49, a phase diaphram wall section steel reinforcement cage 5, Bottom end steel plate 6, the second stage of diaphram wall section steel reinforcement cage 7, band steel 8, cover plate 9, flute profile fastener 10, a phase diaphram wall section I, two Phase diaphram wall section II.
Embodiment
The utility model is further described below in conjunction with the accompanying drawings.
Referring to as shown in Fig. 1-Fig. 9, the technical scheme that present embodiment uses is:It includes I-steel, the and of peg 3 Plugging plate 4 is formed;Two block wing plates 1 of the described I-steel by one block of web 2 and positioned at the both sides of web 2 are welded;Described A phase diaphram wall section I and the second stage of diaphram wall section II are close to be located at respectively in the two sides of web 2, and one the phase underground connect Continuous wall section 5 two blocks of wing plates 1 respectively with I-steel of steel reinforcement cage weld;Described plugging plate 4 is arranged on by the second stage of diaphram wall In the groove of II side I-steel of section, and the web 2 of the groove of plugging plate 4 towards I-steel is set;In described web 2 Portion, ordered series of numbers peg 3 is welded with by the second stage of side of diaphram wall section II.
Further, the centre distance of described ordered series of numbers peg 3 is 260mm, and vertically spacing is 150mm to peg 3, bolt A diameter of 16mm of nail 3, the length of peg 3 is 150mm, and vertically wing plate 1 is higher by 200mm than the top surface of web 2.
Further, described plugging plate 4 is by bottom land steel plate 41, side steel plate 42, floor 43, rubber slab 44, top rubber Offset plate 48, the first top steel plate 45 and the second top steel plate 49 are formed;Wherein bottom land steel plate 41 be arranged in parallel with web 2, side Steel plate 42 be arranged in parallel with wing plate 1, and is set with wing plate 1 in certain distance, one end of two blocks of side steel plates 42 respectively with bottom land Steel plate 41 welds;The second described top steel plate 49 is located at the top surface of side steel plate 42, and is welded with side steel plate 42, the second top Portion's steel plate 49 is vertically arranged with bottom land steel plate 41, and is welded with bottom land steel plate 41;First top steel plate 45 is located at the second top steel The top of plate 49, and set with the second top steel plate 45 in certain distance, the first top steel plate 45 is vertical with bottom land steel plate 41 to be set Put, and welded with the medial surface of bottom land steel plate 41;Top rubber plate 48 is folded in the first top steel plate 45 and the second top steel plate Between 49;Two slat gum plates 44 are folded between two blocks of side steel plates 42 and two blocks of wing plates 1 respectively, and rubber slab 44 and top rubber The contact surface vulcanization connection of offset plate 48;The medial shaft of described side steel plate 42 is interval with polylith floor 43, and floor upwards 43 weld with bottom land steel plate 41 and side steel plate 42 respectively.
Further, the thickness of described rubber slab 44 is more than the spacing between side steel plate 42 and I-steel wing plate 1.
Further, described rubber slab 44 is big by the thickness ratio other end of one end of bottom land steel plate 41.
Further, connected between described rubber slab 44 and side steel plate 42 by bolt and viscose glue.
Further, the bottom of described plugging plate 4, and it is provided with bottom steel by the second stage of diaphragm wall side II positioned at I-steel Plate 6;Bottom end steel plate 6 is welded with web 2 and wing plate 1 respectively, and sealant sealing is used between plugging plate 4 and bottom end steel plate 6.
Further, the outer top surface of described bottom end steel plate 6 welds several nuts 46, and the specification of nut 46 is `M16, Nut 46 is provided with corresponding bolt 47, bolt one end is pushed against the lateral surface of plugging plate 4 by tightening bolt 47.
Further, two flute profile fasteners 10, the flute profile fastener 10 are provided between described plugging plate 4 and the top of web 2 For U-shaped steel plate, the centre of flute profile fastener 10 is provided with two circular hole (not shown)s, set on the wing plate of circular hole correspondence position There is elongated hole (not shown), flute profile fastener 10 is fixedly connected by bolt with wing plate 1, diameter of bolt 25mm, waits a phase continuous The wing plate fixing bolt of flute profile fastener and I-steel is released at the top of the steel reinforcement cage of wall section before insertion foundation trench;The steel of the flute profile fastener 10 Plate thickness 20mm, long L3=340mm, cell body length L4=190mm, horizontal outer side width H3=130mm, horizontal inner side width H4 =55mm.
Further, the size of described bottom end steel plate 6 is 220mm × 930mm × 12mm.
Further, described floor 43 is vertically spaced 300mm settings;Floor 43 is right angled triangle, the right angle length of side 120mm, floor thickness 7mm.
Further, described bottom land steel plate 41 width 880mm, thickness 20mm;The height 150mm of side steel plate 42, steel Plate thickness 10mm;The inner side interplanar distance 90mm of side steel plate 42 and wing plate 1;The size of first top steel plate is 145mm × 880mm × 10mm, the size of the second top steel plate is 145mm × 700mm × 10mm;First top steel plate 45 and the second top steel plate 49 Between spacing 90mm;Described side steel plate 42 and the welding and assembling height 12mm of bottom land steel plate 41, using triangle weld seam;First top End steel plate 45 welds with bottom land steel plate 41, weld bead height 12mm;The size of rubber slab 44 and the cross section of top rubber plate 48 is shown in figure 9, L6=105mm, L7=95mm, L5=175mm, wherein L6, L7 are the horizontal width of rubber slab 44, and can be according to rubber hardness Adjustment, L5 are the length of rubber slab 44, plugging plate 4 install it is in place after transversely designed per side rubber slab 44 compressed thickness 5~ 15mm;First top steel plate 45 is 110mm from the top surface distance H1 of web 2, bottom end steel plate 6 from I-steel web bottom surface with a distance from H2 is about 250mm.
The construction process of present embodiment is as follows:
1) I-steel making is carried out first, then by firm welding between peg 3 and the web 2 of I-steel, afterwards the bottom of by Hold steel plate 6 to be welded with I-steel, and carry out the processing of plugging plate 4;
2) the grooving operation of a phase diaphram wall section I and clear base are carried out;
3) by being set in the space that two blocks of wing plates 1 of the second stage of diaphram wall section II and web 2 are formed on I-steel Plugging plate 4 is put, then multiple nuts 46 is welded in the top surface outer edge of bottom end steel plate 6, corresponding bolt 47 is installed on nut 46, The inner of bolt 47 is set to be against the outer face bottom of plugging plate 4, afterwards with fluid sealant by between plugging plate 4 and bottom end steel plate 6 Gap sealing;
4) make a phase diaphram wall section I steel reinforcement cage, and by a phase diaphram wall section steel reinforcement cage 5 respectively with work Two blocks of wing plates 1 of word steel weld together;
5) a phase diaphram wall section steel reinforcement cage 5 is inserted after the grooving of a phase diaphram wall section I, clear base, and in a phase The top of diaphram wall section steel reinforcement cage 5 releases bolt company between flute profile fastener 10 and I-steel wing plate 1 before will inserting foundation trench Connect, timely casting concrete;
6) after the second stage of grooving of diaphram wall section II, clear base, flute profile fastener 10 and plugging plate 4 are taken out;
7) the second stage of diaphram wall section steel reinforcement cage 7, timely casting concrete are inserted.
After said structure, present embodiment has the beneficial effect that:One kind described in present embodiment is welded with The I-shaped steel joint of peg, it is not necessary to carry out the clear mud of I-shaped steel brush wall, I-steel is isolated with mud, ensure I-steel cleaning; I-steel web is welded with peg, and peg is anchored into the second stage of diaphragm wall section concrete, and joint anti-bending bearing capacity is high, joint resistance to deformation energy Power is strong, improves the impermeability of I-shaped steel joint, and practicality is stronger, and the utility model has simple in construction, and it is reasonable to set, and makes Low cost and other advantages.
Embodiment:
Referring to Figure 10, a row are welded with the middle part of the side of the second stage of diaphram wall section II on web 2 in the present embodiment Peg 3, the vertical spacing between adjacent peg 3 are 100mm, remaining part and annexation with the phase of embodiment one Together.
It is described above, only to illustrate the technical solution of the utility model and unrestricted, those of ordinary skill in the art couple The other modifications or equivalent substitution that the technical solution of the utility model is made, without departing from technical solutions of the utility model Spirit and scope, it all should cover among right of the present utility model.

Claims (8)

  1. A kind of 1. I-shaped steel joint for being welded with peg, it is characterised in that:It includes I-steel, peg and plugging plate and formed;It is described Two block wing plates of the I-steel by one block of web and positioned at web both sides be welded;It is close to respectively the two sides of described web Be located at a phase diaphram wall section and the second stage of diaphram wall, and a phase diaphram wall section steel reinforcement cage respectively with I-steel Two pieces of wing plate welding;Described plugging plate is arranged in the groove by the second stage of diaphram wall side I-steel, and plugging plate The web of groove towards I-steel is set;The middle part of described web, ordered series of numbers peg is welded with by the second stage of diaphram wall side.
  2. A kind of 2. I-shaped steel joint for being welded with peg according to claim 1, it is characterised in that:Described plugging plate and abdomen Two flute profile fasteners are provided between at the top of plate, the flute profile fastener is U-shaped steel plate, and the centre of flute profile fastener is provided with two circular holes, Elongated hole is provided with the wing plate of circular hole correspondence position, flute profile fastener is fixedly connected by bolt with wing plate.
  3. A kind of 3. I-shaped steel joint for being welded with peg according to claim 1, it is characterised in that:Described plugging plate is by groove Bottom steel plate, side steel plate, floor, rubber slab, top rubber plate, the first top steel plate and the second top steel plate are formed;Its bracket groove Bottom steel plate be arranged in parallel with web, and side steel plate be arranged in parallel with wing plate, and is set with wing plate in certain distance, two blocks of side steel Welded respectively with bottom land steel plate one end of plate;The second described top steel plate is located at the top surface of side steel plate, and with side steel plate Welding, the second top steel plate are vertically arranged with bottom land steel plate, and are welded with bottom land steel plate;First top steel plate is located at the second top The top of steel plate, and set with the second top steel plate in certain distance, the first top steel plate is vertically arranged with bottom land steel plate, and with The medial surface welding of bottom land steel plate;Top rubber plate is folded between the first top steel plate and the second top steel plate;Two slat gums Plate is folded between two blocks of side steel plates and two blocks of wing plates respectively, and the contact surface vulcanization of rubber slab and top rubber plate connects; The medial shaft of described side steel plate is interval with polylith floor upwards, and floor welds with bottom land steel plate and side steel plate respectively Connect.
  4. A kind of 4. I-shaped steel joint for being welded with peg according to claim 3, it is characterised in that:The thickness of described rubber slab Degree is more than the spacing between side steel plate and I-steel wing plate.
  5. A kind of 5. I-shaped steel joint for being welded with peg according to claim 3, it is characterised in that:Described rubber slab leans on groove The thickness ratio other end of one end of bottom steel plate is big.
  6. A kind of 6. I-shaped steel joint for being welded with peg according to claim 3, it is characterised in that:Described rubber slab and side Connected between the steel plate of face by bolt with viscose glue.
  7. A kind of 7. I-shaped steel joint for being welded with peg according to claim 3, it is characterised in that:The bottom of described plugging plate Portion, and it is provided with bottom end steel plate by the second stage of diaphragm wall side positioned at I-steel;Bottom end steel plate welds with web and wing plate respectively, closure Sealant sealing is used between plate and bottom end steel plate.
  8. A kind of 8. I-shaped steel joint for being welded with peg according to claim 7, it is characterised in that:Described bottom end steel plate Outer top surface welds several nuts, and nut is provided with corresponding bolt.
CN201721068118.3U 2017-08-24 2017-08-24 A kind of I-shaped steel joint for being welded with peg Withdrawn - After Issue CN207159991U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201721068118.3U CN207159991U (en) 2017-08-24 2017-08-24 A kind of I-shaped steel joint for being welded with peg

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201721068118.3U CN207159991U (en) 2017-08-24 2017-08-24 A kind of I-shaped steel joint for being welded with peg

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107700473A (en) * 2017-08-24 2018-02-16 中铁隧道勘测设计院有限公司 A kind of I-shaped steel joint for being welded with peg
KR20230126941A (en) * 2022-02-24 2023-08-31 주식회사 유탑엔지니어링 Joint for connecting parts of slurry wallslurry wall and construction method of slurry wall using the joint
KR20230126940A (en) * 2022-02-24 2023-08-31 주식회사 유탑엔지니어링 Joint for connecting parts of slurry wallslurry wall and construction method of slurry wall using the joint

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107700473A (en) * 2017-08-24 2018-02-16 中铁隧道勘测设计院有限公司 A kind of I-shaped steel joint for being welded with peg
CN107700473B (en) * 2017-08-24 2023-03-21 中铁第六勘察设计院集团有限公司 I-steel joint welded with stud
KR20230126941A (en) * 2022-02-24 2023-08-31 주식회사 유탑엔지니어링 Joint for connecting parts of slurry wallslurry wall and construction method of slurry wall using the joint
KR20230126940A (en) * 2022-02-24 2023-08-31 주식회사 유탑엔지니어링 Joint for connecting parts of slurry wallslurry wall and construction method of slurry wall using the joint
KR102601492B1 (en) 2022-02-24 2023-11-13 주식회사 유탑엔지니어링 Joint for connecting parts of slurry wallslurry wall and construction method of slurry wall using the joint
KR102601493B1 (en) 2022-02-24 2023-11-13 주식회사 유탑엔지니어링 Joint for connecting parts of slurry wallslurry wall and construction method of slurry wall using the joint

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Effective date of registration: 20190214

Address after: Room 2-3116, 88 Huanhan Road, Tianjin Free Trade Zone (Airport Economic Zone), Dongli District, Tianjin 300000

Patentee after: CHINA RAILWAY LIUYUAN GROUP Co.,Ltd.

Address before: 300000 Hongqiao District, Tianjin City, Bridge South East Road

Co-patentee before: CHINA RAILWAY LIUYUAN GROUP Co.,Ltd.

Patentee before: CHINA RAILWAY TUNNEL SURVEY & DESIGN INSTITUTE Co.,Ltd.

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AV01 Patent right actively abandoned

Granted publication date: 20180330

Effective date of abandoning: 20230321

AV01 Patent right actively abandoned
AV01 Patent right actively abandoned