CN206521768U - A kind of shear connector in the double-deck box hat concrete combined structure of immersed tube tunnel - Google Patents

A kind of shear connector in the double-deck box hat concrete combined structure of immersed tube tunnel Download PDF

Info

Publication number
CN206521768U
CN206521768U CN201621445222.5U CN201621445222U CN206521768U CN 206521768 U CN206521768 U CN 206521768U CN 201621445222 U CN201621445222 U CN 201621445222U CN 206521768 U CN206521768 U CN 206521768U
Authority
CN
China
Prior art keywords
steel
shear connector
steel plate
plate
diaphragm
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201621445222.5U
Other languages
Chinese (zh)
Inventor
范建华
吉小明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong University of Technology
Original Assignee
Guangdong University of Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangdong University of Technology filed Critical Guangdong University of Technology
Priority to CN201621445222.5U priority Critical patent/CN206521768U/en
Application granted granted Critical
Publication of CN206521768U publication Critical patent/CN206521768U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model discloses the shear connector in a kind of double-deck box hat concrete combined structure of immersed tube tunnel, including upper strata steel plate, lower floor's steel plate, T-steel shear connector, I-steel shear connector, longitudinal steel diaphragm and horizontal steel diaphragm, wherein, the T-steel shear connector, I-steel shear connector, longitudinal steel diaphragm and horizontal steel diaphragm are all disposed between the upper strata steel plate and lower floor's steel plate, the T-steel shear connector is separately positioned on the lower surface of the upper strata steel plate and the upper surface of lower floor's steel plate, the two ends of the I-steel shear connector are connected with the lower surface of the upper strata steel plate and the upper surface of lower floor's steel plate respectively;The utility model has the advantages that processing and fabricating is simple, easy construction is quick, mechanical property good, applied widely.

Description

A kind of shear connector in the double-deck box hat concrete combined structure of immersed tube tunnel
Technical field
The utility model is related to building structure technology field, and in particular to a kind of double-deck box hat Combined concrete of immersed tube tunnel Shear connector in structure.
Background technology
In China, current immersed tube tunnel tube coupling is built using reinforced concrete structure, reinforced concrete structure By setting up template-assembling reinforcement skeleton-casting concrete, overall stress knot is formed with framework of steel reinforcement after concrete is condensed Structure.The immersed tube tunnel of reinforced concrete structure has convenient construction, technology maturation, engineering economy good under common construction condition, And enough strength and stiffness can be provided, using effect is preferable, but it also has the shortcomings that some are protruded:Job site needs a large amount of Template, a large amount of reinforcing bars of colligation pour into a mould a large amount of concrete, and greatly and again, cracking resistance is poor, and speed of application is slow, maintenance bar for scantling Part is high, and cost of labor is high, the problems such as causing severe contamination to environment.If heavy to build with double-deck box hat concrete combined structure If pipe tunnel, its intensity is high, rigidity is big, water resistance is good, it is adaptable to the condition such as large span, great burying, high hydraulic pressure, and double Layer steel plate is prefabricated in the factory, and construction quality is high, speed is fast, and cost of labor is low.But, traditional double-deck box hat Combined concrete knot Structure there are problems that in design:Shear connector arrangement is excessively intensive, is unfavorable for pouring into a mould concrete;While shear connector Spacing has strict demand between spacing and double-layer plate, and needs special machinery to be welded.Therefore, seek a kind of new Batch production of the double-deck box hat concrete combined structure shear connector to this class formation it is prefabricated have great importance, while right Development and construction of the double-deck box hat concrete combined structure in immersed tube tunnel have actual directive significance.
Utility model content
The purpose of this utility model be to overcome the shortcoming and deficiency of prior art there is provided a kind of processing and fabricating it is simple, apply Shearing in the double-deck box hat concrete combined structure of the good and applied widely immersed tube tunnel of work fast and easy, mechanical property connects Fitting.
The purpose of this utility model is achieved through the following technical solutions:
Shear connector in a kind of double-deck box hat concrete combined structure of immersed tube tunnel, including upper strata steel plate, lower floor's steel Plate, T-steel shear connector, I-steel shear connector, longitudinal steel diaphragm and horizontal steel diaphragm, wherein, the T-steel shearing Connector, I-steel shear connector, longitudinal steel diaphragm and horizontal steel diaphragm are all disposed within the upper strata steel plate and lower floor's steel plate Between, the T-steel shear connector is separately positioned on the lower surface of the upper strata steel plate and the upper surface of lower floor's steel plate, described The two ends of I-steel shear connector are connected with the lower surface of the upper strata steel plate and the upper surface of lower floor's steel plate respectively, and institute I-steel shear connector is stated with T-steel shear connector to be connected;Longitudinal steel diaphragm upper and lower ends respectively with it is described on The lower surface of layer steel plate is connected with the upper surface of lower floor's steel plate, and longitudinal steel diaphragm is arranged on two T-steel shearings and connected Between fitting, the lower surface and the upper surface phase of lower floor's steel plate of the horizontal steel diaphragm upper and lower ends respectively with the upper strata steel plate Connection, and the horizontal steel diaphragm is arranged between two I-steel shear connectors, longitudinal steel diaphragm and horizontal steel every Plate is mutually combined to form interior compartment;The upper strata steel plate is provided with concrete plug hole and steam vent, and self-compacting concrete passes through The concrete plug hole enters the interior compartment;
The T-steel shear connector includes wing plate and web, and the wing plate and web are arranged in a mutually vertical manner, described T-shaped Steel shear connector is connected with the upper strata steel plate and lower floor's steel plate respectively by the web;The I-steel Shear connection Part includes two wing plates and the web being arranged between two wing plates, and the web and two wing plates are arranged in a mutually vertical manner, described T-shaped Steel shear connector is connected with the wing plate of left and right two of the I-steel shear connector.
Preferably, the T-steel shear connector, I-steel shear connector, upper strata steel plate or lower floor's steel plate this three It is connected with each other between person by full weld.
Preferably, the web of the T-steel shear connector and the web direction of I-steel shear connector are consistent and thick Degree is equal.
Preferably, the thickness of the upper strata steel plate and lower floor's steel plate is 20-40mm;The wing of the T-steel shear connector The thickness of plate and web is 6-10mm;The wing plate of the I-steel shear connector and the thickness of web are 6-10mm.
Preferably, the T-steel shear connector is equally spaced, and two neighboring T-steel shear connector wing plate it Between clear distance be not less than 120mm.
Preferably, the concrete plug hole is arranged on the center of the interior compartment, and the diameter of concrete plug hole Not less than 200mm;The steam vent is evenly arranged in concrete plug hole surrounding, and a diameter of 80-120mm of steam vent.
Preferably, the thickness of longitudinal steel diaphragm and horizontal steel diaphragm is 8-12mm.
Operation principle of the present utility model:
During work, first according to the parameter of design, well cutting upper strata steel plate, lower floor's steel plate, T-steel Shear connection Part, I-steel shear connector, longitudinal steel diaphragm and horizontal steel diaphragm;According to design requirement, the relevant position of steel plate on upper strata T-steel shear connector is welded, T-steel shear connector and I-steel Shear connection are welded in the relevant position of lower floor's steel plate Part;Upper strata steel plate is overturn and lifted by crane, with welding I-steel shear connector and upper strata steel plate after the completion of the contraposition of lower floor steel plate Together;Longitudinal steel diaphragm is arranged on relevant position in order, and welded together with upper strata steel plate and lower floor's steel plate;By suitable Horizontal steel diaphragm is arranged on relevant position by sequence, and is welded together with upper strata steel plate and lower floor's steel plate;Longitudinal steel diaphragm and horizontal stroke It is mutually combined to form interior compartment to steel diaphragm, by the concrete plug hole of upper strata steel plate, internally compartment cast self-compaction is mixed Solidifying soil;Wait that poured into a mould self-compacting concrete intensity reaches design requirement, by welding come closed concrete plug hole.
The utility model has following beneficial effect compared with prior art:
(1) the utility model have that processing and fabricating is simple, easy construction is quick, mechanical property good, it is applied widely etc. excellent Point;
(2) the utility model can give full play to the advantage of steel and concrete, and achievable batch production is prefabricated, and without using Special machine is processed, so as to reduce equipment investment;Site operation workload is reduced simultaneously, makes convenient and quick construction;
(3) the utility model have significantly economize on resources, environmental protection and reduce pollute the characteristics of, meet sustainable development Exhibition is required.
Brief description of the drawings
Fig. 1 is overall structure diagram of the present utility model;
Fig. 2 is the structural representation of the utility model T-steel shear connector and I-steel shear connector;
Fig. 3 is the top view of the utility model combining structure;
Fig. 4 is the structural representation that the utility model pours into a mould self-compacting concrete.
Reference is in figure:1st, upper strata steel plate;2nd, lower floor's steel plate;3rd, T-steel shear connector;4th, I-steel shearing connects Fitting;5th, longitudinal steel diaphragm;6th, horizontal steel diaphragm;7th, concrete plug hole;8th, steam vent;9th, self-compacting concrete.
Embodiment
The utility model is described in further detail with reference to embodiment and accompanying drawing, but implementation of the present utility model Mode not limited to this.
As shown in figures 1-4, the shear connector in a kind of double-deck box hat concrete combined structure of immersed tube tunnel, including upper Layer steel plate 1, lower floor's steel plate 2, T-steel shear connector 3, I-steel shear connector 4, longitudinal steel diaphragm 5 and horizontal steel diaphragm 6, wherein, the T-steel shear connector 3, I-steel shear connector 4, longitudinal steel diaphragm 5 and horizontal steel diaphragm 6 are all set Between the upper strata steel plate 1 and lower floor's steel plate 2, the T-steel shear connector 3 is separately positioned on the upper strata steel plate 1 The upper surface of lower surface and lower floor's steel plate 2, the T-steel shear connector 3 is equally spaced, and two neighboring T-steel is sheared Clear distance between the wing plate of connector 3 is not less than 120mm, and the T-steel shear connector 3 undertakes the double-deck box hat of immersed tube tunnel and mixed The main shearing of solidifying soil combining structure;The lower surface of the two ends of the I-steel shear connector 4 respectively with the upper strata steel plate 1 It is connected with the upper surface of lower floor steel plate 2, the I-steel shear connector 4 fixes the relative of upper strata steel plate 1 and lower floor's steel plate 2 Position, and undertake secondary shearing;And the I-steel shear connector 4 is connected with T-steel shear connector 3, the T-steel Mutually interconnected by full weld between shear connector 3, I-steel shear connector 4, upper strata steel plate 1 or lower floor's steel plate 2 this three Connect;The T-steel shear connector 3 includes wing plate and web, and the wing plate and web are arranged in a mutually vertical manner, and the T-steel is cut Power connector 3 is connected with the upper strata steel plate 1 and lower floor's steel plate 2 respectively by the web;The I-steel Shear connection Part 4 includes two wing plates and the web being arranged between two wing plates, and the web and two wing plates are arranged in a mutually vertical manner, the T Shaped steel shear connector 3 is connected with the wing plate of left and right two of the I-steel shear connector 4;The T-steel shear connector 3 Web it is consistent with the web direction of I-steel shear connector 4 and thickness is equal;The upper strata steel plate 1 and lower floor's steel plate 2 Thickness is 20-40mm;The wing plate of the T-steel shear connector 3 and the thickness of web are 6-10mm;The I-steel shearing connects The wing plate of fitting 4 and the thickness of web are 6-10mm.The upper and lower ends of longitudinal steel diaphragm 5 respectively with the upper strata steel plate 1 Lower surface is connected with the upper surface of lower floor steel plate 2, and longitudinal steel diaphragm 5 be arranged on two T-steel shear connectors 3 it Between, the horizontal upper and lower ends of steel diaphragm 6 are connected with the lower surface of the upper strata steel plate 1 and the upper surface of lower floor's steel plate 2 respectively Connect, and the horizontal steel diaphragm 6 is arranged between two I-steel shear connectors 4;Longitudinal steel diaphragm 5 and horizontal steel every Plate 6 is mutually combined to form interior compartment;The thickness of longitudinal steel diaphragm 5 and horizontal steel diaphragm 6 is 8-12mm;The upper strata steel Plate 1 is provided with concrete plug hole 7 and steam vent 8, and self-compacting concrete 9 enters the inside by the concrete plug hole 7 Compartment, the concrete plug hole 7 is arranged on the center of the interior compartment, and the diameter of concrete plug hole 7 is not less than 200mm;The steam vent 8 is evenly arranged in the surrounding of concrete plug hole 7, and a diameter of 80-120mm of steam vent 8;
During work, first according to the parameter of design, well cutting upper strata steel plate 1, lower floor's steel plate 2, T-steel Shear connection Part 3, I-steel shear connector 4, longitudinal steel diaphragm 5 and horizontal steel diaphragm 6;According to design requirement, on upper strata, steel plate 1 is corresponding Position welding T-steel shear connector 3, cuts in the relevant position welding T-steel shear connector 3 and I-steel of lower floor's steel plate 2 Power connector 4;Upper strata steel plate 1 is overturn and lifted by crane, after the completion of being aligned with lower floor steel plate 2 by I-steel shear connector 4 with it is upper Layer steel plate 1 welds together;In order longitudinal steel diaphragm 5 be arranged on relevant position, and with upper strata steel plate 1 and lower floor's steel plate 2 Weld together;Horizontal steel diaphragm 6 is arranged on relevant position in order, and one is welded on upper strata steel plate 1 and lower floor's steel plate 2 Rise;Longitudinal steel diaphragm 5 and horizontal steel diaphragm 6 are mutually combined to form interior compartment, pass through the concrete plug hole 7 of upper strata steel plate 1 Internally compartment pours into a mould self-compacting concrete 9;Wait that the poured into a mould intensity of self-compacting concrete 9 reaches design requirement, by weld come Closed concrete plug hole 7.
Specifically, Fig. 1 is overall structure diagram of the present utility model, its structural system it is main by upper strata steel plate 1, under Layer steel plate 2, T-steel shear connector 3, I-steel shear connector 4, longitudinal steel diaphragm 5, horizontal steel diaphragm 6, concrete cast Hole 7, steam vent 8 are constituted, preferably, all steel use yield strength for Q345 and the steel of the above.Concrete is poured into a mould The compartment center arrangement, and diameter is not less than 200mm internally of hole 7;Poured into a mould from self-compacting concrete 9, and self-compacting concrete 9 Intensity is then used for C40 and the self-compacting concrete of the above 9;The surrounding of steam vent 8 is evenly arranged, a diameter of 80-120mm;Cast After the completion of, hole welded seal.Longitudinal steel diaphragm 5 and transverse direction steel diaphragm 6 thickness are 8-12mm;Longitudinal full weld of steel diaphragm 5 is upper The lower surface of layer steel plate 1 and the upper surface of lower floor's steel plate 2.Horizontal steel diaphragm 6 is arranged in adjacent I-steel shear connector 4 Between, through T-steel, full weld is in the lower surface of upper strata steel plate 1 and the upper surface of lower floor's steel plate 2.
Fig. 2~3 are the structural representation of the utility model T-steel shear connector 3 and I-steel shear connector 4, are made To be preferred, the thickness of upper strata steel plate 1 and lower floor's steel plate 2 is 20-40mm;The web of T-steel shear connector 3 and the thickness of wing plate For 6-10mm, web is welded on the lower surface of upper strata steel plate 1 and the upper surface of lower floor's steel plate 2;The abdomen of I-steel shear connector 4 Plate and wing plate thickness are 6-10mm, through T-steel and are welded on the lower surface of upper strata steel plate 1 and the upper surface of lower floor's steel plate 2, and Height of its height not less than 3 times of T-steel shear connectors 3.T-steel shear connector 3 is equally spaced, and its adjacent vanes is net Distance is not less than 120mm, and the wing plate of the wing plate and I-steel shear connector 4 of T-steel shear connector 3 is wide.T-steel is cut The web uniform thickness of the web of power connector 3 and I-steel shear connector 4 and direction is consistent.
The utility model has the advantages that processing and fabricating is simple, easy construction is quick, mechanical property good, applied widely; The advantage of steel and concrete can be given full play to, achievable batch production is prefabricated, and is processed without using special machine, so that Reduce equipment investment;Site operation workload is reduced simultaneously, makes convenient and quick construction;With significantly economizing on resources, protection ring The characteristics of border and reduction pollution, meet sustainable development requirement.
Above-mentioned is the utility model preferably embodiment, but embodiment of the present utility model is not by the above Limitation, it is other it is any without departing from Spirit Essence of the present utility model and the change made under principle, modification, replacement, combine, it is simple Change, should be equivalent substitute mode, be included within protection domain of the present utility model.

Claims (7)

1. the shear connector in a kind of double-deck box hat concrete combined structure of immersed tube tunnel, it is characterised in that including upper strata steel Plate, lower floor's steel plate, T-steel shear connector, I-steel shear connector, longitudinal steel diaphragm and horizontal steel diaphragm, wherein, it is described T-steel shear connector, I-steel shear connector, longitudinal steel diaphragm and horizontal steel diaphragm be all disposed within the upper strata steel plate and Between lower floor's steel plate, the T-steel shear connector be separately positioned on the upper strata steel plate lower surface and lower floor's steel plate it is upper Surface, the lower surface and the upper surface phase of lower floor's steel plate of the two ends of the I-steel shear connector respectively with the upper strata steel plate Connect, and the I-steel shear connector is connected with T-steel shear connector;Longitudinal steel diaphragm upper and lower ends difference Be connected with the lower surface of the upper strata steel plate and the upper surface of lower floor's steel plate, and longitudinal steel diaphragm be arranged on two it is T-shaped Between steel shear connector, the horizontal steel diaphragm upper and lower ends respectively with the lower surface of the upper strata steel plate and lower floor's steel plate Upper surface is connected, and the horizontal steel diaphragm is arranged between two I-steel shear connectors, longitudinal steel diaphragm and Horizontal steel diaphragm is mutually combined to form interior compartment;The upper strata steel plate is provided with concrete plug hole and steam vent, and self-compaction is mixed Solidifying soil enters the interior compartment by the concrete plug hole;
The T-steel shear connector includes wing plate and web, and the wing plate and web are arranged in a mutually vertical manner, and the T-steel is cut Power connector is connected with the upper strata steel plate and lower floor's steel plate respectively by the web;The I-steel shear connector bag Two wing plates and the web being arranged between two wing plates are included, the web and two wing plates are arranged in a mutually vertical manner, and the T-steel is cut Power connector is connected with the wing plate of left and right two of the I-steel shear connector.
2. the shear connector in the double-deck box hat concrete combined structure of immersed tube tunnel according to claim 1, its feature It is, passes through between the T-steel shear connector, I-steel shear connector, upper strata steel plate or lower floor's steel plate this three Full weld is connected with each other.
3. the shear connector in the double-deck box hat concrete combined structure of immersed tube tunnel according to claim 1, its feature It is, the web of the T-steel shear connector is consistent with the web direction of I-steel shear connector and thickness is equal.
4. the shear connector in the double-deck box hat concrete combined structure of immersed tube tunnel according to claim 1, its feature It is, the thickness of the upper strata steel plate and lower floor's steel plate is 20-40mm;The wing plate of the T-steel shear connector and web Thickness is 6-10mm;The wing plate of the I-steel shear connector and the thickness of web are 6-10mm.
5. the shear connector in the double-deck box hat concrete combined structure of immersed tube tunnel according to claim 1, its feature It is, the T-steel shear connector is equally spaced, and the clear distance between two neighboring T-steel shear connector wing plate Not less than 120mm.
6. the shear connector in the double-deck box hat concrete combined structure of immersed tube tunnel according to claim 1, its feature It is, the concrete plug hole is arranged on the center of the interior compartment, and the diameter of concrete plug hole is not less than 200mm;The steam vent is evenly arranged in concrete plug hole surrounding, and a diameter of 80-120mm of steam vent.
7. the shear connector in the double-deck box hat concrete combined structure of immersed tube tunnel according to claim 1, its feature It is, the thickness of longitudinal steel diaphragm and horizontal steel diaphragm is 8-12mm.
CN201621445222.5U 2016-12-27 2016-12-27 A kind of shear connector in the double-deck box hat concrete combined structure of immersed tube tunnel Expired - Fee Related CN206521768U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201621445222.5U CN206521768U (en) 2016-12-27 2016-12-27 A kind of shear connector in the double-deck box hat concrete combined structure of immersed tube tunnel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201621445222.5U CN206521768U (en) 2016-12-27 2016-12-27 A kind of shear connector in the double-deck box hat concrete combined structure of immersed tube tunnel

Publications (1)

Publication Number Publication Date
CN206521768U true CN206521768U (en) 2017-09-26

Family

ID=59887821

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201621445222.5U Expired - Fee Related CN206521768U (en) 2016-12-27 2016-12-27 A kind of shear connector in the double-deck box hat concrete combined structure of immersed tube tunnel

Country Status (1)

Country Link
CN (1) CN206521768U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108239995A (en) * 2018-01-31 2018-07-03 广东工业大学 A kind of open cut is without column Metro Station Structure
CN112064679A (en) * 2020-08-28 2020-12-11 广船国际有限公司 Construction method of wall block in steel shell of immersed tunnel
CN112064680A (en) * 2020-08-31 2020-12-11 广船国际有限公司 Manufacturing method of immersed tunnel steel shell pipe joint and immersed tunnel steel shell pipe joint

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108239995A (en) * 2018-01-31 2018-07-03 广东工业大学 A kind of open cut is without column Metro Station Structure
CN112064679A (en) * 2020-08-28 2020-12-11 广船国际有限公司 Construction method of wall block in steel shell of immersed tunnel
CN112064680A (en) * 2020-08-31 2020-12-11 广船国际有限公司 Manufacturing method of immersed tunnel steel shell pipe joint and immersed tunnel steel shell pipe joint

Similar Documents

Publication Publication Date Title
CN101914952A (en) Connecting joint between hollow steel tube concrete column and steel girder and construction method thereof
CN106869321A (en) The prefabricated regeneration concrete bean column node and its construction method of a kind of reinforcement
CN205894313U (en) Prefabricated assembled steel pipe retrains frame node entirely
CN206707124U (en) Prefabricated assembling type reinforced concrete component with joint of steel structure
CN107268805A (en) A kind of prefabricated assembled beam column box node
CN206521768U (en) A kind of shear connector in the double-deck box hat concrete combined structure of immersed tube tunnel
CN104912197A (en) Connecting node for steel pipe concrete post and outside U-shaped steel and concrete composite beam
CN108678220A (en) A kind of concrete shear force wall of steel bar template integrative installation technology
CN108301545A (en) A kind of big module overlapping contignation of the assembled with space truss temporary support
CN104294920B (en) The node component of a kind of U-shaped steel-concrete combination beam and special-shaped steel pipe concrete post and preparation method
CN204097864U (en) A kind of bridge prefabrication hollow pier stud delay-pour joint structure
CN106759858B (en) A kind of connecting node and preparation method of H profile steel beam and rectangular steel-tube concrete column
CN208486404U (en) A kind of concrete shear force wall of steel bar template integrative installation technology
CN103806593B (en) A kind of precast concrete
CN207277549U (en) It is a kind of that H profile steel and the regeneration monolith connecting node of U-shaped steel are set
CN206233084U (en) A kind of combined Wavelike steel webplate base plate Shear connection key
CN106400668B (en) A kind of combined Wavelike steel webplate bottom plate Shear connection key and construction method
CN108104263A (en) A kind of novel fabricated steel-regeneration concrete combination frame structural system
CN108086135A (en) A kind of assembled steel tube constrains reinfored concrete line frame bridge pier
CN204081090U (en) The node component of a kind of U-shaped steel-concrete combination beam and special-shaped steel pipe concrete post
CN207194175U (en) A kind of prefabricated assembled bean column node box
CN106759857B (en) Steel tube regeneration monolith assembling structure
CN206722094U (en) A kind of rectangular steel-tube concrete column and beam and slab type superstructure attachment means
CN207003719U (en) A kind of prefabricated steel faced wall with steel bar girder
CN207032011U (en) A kind of assembled steel tube constrains reinfored concrete line frame bridge pier

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20170926

Termination date: 20201227

CF01 Termination of patent right due to non-payment of annual fee