Full-assembly type SBSG shear connection steel-concrete composite beam

A fully assembled and composite beam technology, which is applied in the direction of erecting/assembling bridges, bridges, bridge materials, etc., can solve the problems of complex local structures of prefabricated bridge slabs and steel beams, high requirements for installation accuracy, and difficult quality control, etc., to achieve reliable Effect of shear performance, reliable shear and pullout resistance, simplified structural construction and field connection process

Pending Publication Date: 2022-02-18
SHENZHEN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, post-insertion of pullout bolt connections makes the local structure of the prefabricated bridge slab and steel girders complex, requires high installation accuracy, and makes quality control difficult

Method used

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  • Full-assembly type SBSG shear connection steel-concrete composite beam
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  • Full-assembly type SBSG shear connection steel-concrete composite beam

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Embodiment Construction

[0038] Such as Figure 1 to Figure 7As shown: the fully assembled SBSG shear connection steel-concrete composite beam of this embodiment includes a steel beam 2 and a prefabricated concrete bridge slab 1, and the top fixed part of the steel beam 1 has a plurality of steel bolts 201, which can be Welding can also be used for other mechanical fixing methods, which will not be repeated here; the steel bolt 201 is at least in a vertical section with a gradually transitional upper and lower structure, and the lower part of the prefabricated concrete bridge slab 1 is distributed There is a fitting groove 102 with a lower opening, and the fitting groove 102 conforms to the steel bolt 201 on the vertical section, and the size of the lower opening of the fitting groove 102 is such that the prefabricated concrete bridge slab is assembled to the steel girder The steel bolt 201 can be inserted at the top, and generally requires a moderate error gap to facilitate assembly, so I won’t repea...

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Abstract

Disclosed is a full-assembly type SBSG shear connection steel-concrete composite beam that comprises a steel beam and a prefabricated concrete bridge deck, a plurality of steel bolts are fixedly distributed on the top of the steel beam, at least one vertical section of each steel bolt is of a big-end-up structure which is gradually transited, matching grooves with openings in the lower portions are distributed in the lower portion of the prefabricated concrete bridge deck. Each matching groove matches the steel bolt in shape on the vertical section; the invention has reliable shear resistance and pulling resistance, and reliable connection of the bridge deck and the steel beam is achieved without cast-in-place combined concrete; the steel bolts on the top of the steel beam and the matching grooves can adopt steel structures, the requirement for the embedded installation precision of the bridge deck and the top of the steel beam on a bridge site is easily met, a special anti-pulling connecting structure is avoided, the structure is obviously simplified, the embedded installation of the steel bolts and the matching grooves allows a large gap (filling a combination material), and the requirement for the installation precision is obviously reduced; the field workload is obviously reduced, and the reliability of the combined structure is correspondingly improved.

Description

technical field [0001] The invention belongs to the field of bridge and structural engineering, in particular to a steel-concrete composite beam with fully assembled SBSG shear connection. Background technique [0002] The steel-concrete composite girder bridge can give full play to the performance advantages of steel and concrete, avoid the hidden dangers of structural cracking, and has a series of advantages such as good performance, less sand and gravel mining, recyclable steel, and convenient factory and standardized construction. The common construction method of the existing steel-concrete composite girder bridge is to install the steel girder in place on the pier, hoist the prefabricated concrete bridge slab in place on the steel girder, and then form an integral structure through cast-in-place concrete or welding at the joint. Steel-concrete composite beams. [0003] Although the overall efficiency of the entire construction process has been improved compared with t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D19/00E01D19/12E01D21/00E01D101/26
CPCE01D19/00E01D19/125E01D21/00E01D2101/268
Inventor 周志祥钟世祥邹杨周劲宇王珏蒋金龙周丰力王晓东
Owner SHENZHEN UNIV
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