An installation method of pbl shear key in steel box girder for steel-concrete joint
A technology of steel-concrete combination and installation method, applied in bridges, bridge construction, erection/assembly of bridges, etc., can solve the problems of narrow space, many joints, difficult welding of welds, etc., and achieves short on-site operation time, broad promotion value, The effect of high construction efficiency
Active Publication Date: 2016-05-04
THE SECOND CONSTR OF CTCE GROUP +1
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Problems solved by technology
The former brings a lot of inconvenience to the assembly, welding and inspection of the steel box girder in the steel-concrete joint section, and the narrow space makes it difficult to weld some welds; There are many sections and joints, it is difficult to meet the specification requirements, and the potential hidden dangers of construction quality are relatively prominent
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[0021] according to figure 1 , figure 2 and image 3 As shown, a method for installing PBL shear keys in a steel box girder 1 for a steel-concrete joint section. The segmental beam body is assembled and welded. The left beam body 3, the middle beam body 4 and the right beam body 5 respectively include a plurality of passing shear plates arranged at intervals, and each passing shear plate is provided with a plurality of PBL shear force The key installation holes and the PBL shear key installation holes are opposite to each other, forming multiple sets of PBL shear key installation holes;
[0022] Include the following steps:
[0023] a, according to the structure of the steel box girder 1, the length characteristics carry out segment blanking to the PBL shear key to make the PBL shear key segment 2, and thread at the end of the PBL shear key segment 2; in the present invention , the PBL shear key is made of steel bars.
[0024] b. Install two sections of PBL shear key seg...
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The invention relates to a mounting method of PBL shear keys inside a steel box girder for a reinforced concrete composite segment. The method comprises the following steps of dividing the PBL shear keys of the reinforced concrete composite segment into a plurality of PBL shear key segments; threading the PBL shear key segments and then preassembling the segments into a partially-assembled reinforced concrete composite segment steel box girder according to designated positions; adjusting the positions of the PBL shear key segments during the assembling process of the reinforced concrete composite segment steel box girder; after assembly of bridge positions of the composite segment steel box girder is completed, connecting the PBL shear key segments through straight thread sleeves. The mounting method of the PBL shear keys inside the steel box girder for the reinforced concrete compost segment has the advantages of being applicable to complex reinforced concrete composite segment structures, capable of freely adjusting the length of the PBL shear key segments according to structural features and high in flexibility. Besides, the mounting method of the PBL shear keys inside the steel box girder for the reinforced concrete compost segment is simple in process, high in construction efficiency, short in field operation time and easy to meet relevant norms and requirements on construction quality.
Description
technical field [0001] The invention relates to a bridge building construction, in particular to a method for installing a PBL shear key in a steel box girder of a steel-concrete joint section. Background technique [0002] With the development of domestic bridges, the structural form of the combined section of steel box girder and concrete box girder has been widely used. The steel-concrete joint section is the structural part that solves the problem of smooth transition of stiffness between steel-concrete, uniform stress transmission and reliable connection of steel-concrete joint. [0003] The PBL shear key in the traditional steel-concrete joint section has long length, high rigidity, is not suitable for welding, and requires high construction precision. At present, there is no mature method for the construction of PBL shear key in the steel-concrete joint section. [0004] In the specific construction, the PBL shear key method is usually installed before the assembly o...
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IPC IPC(8): E01D21/00E01D2/04
CPCE01D2/04E01D21/00
Inventor 任世朋孙小猛徐登云闫明赛欧阳石温朝斌王克礼李鹏程黄爱民姜泛金赵伟郭庄
Owner THE SECOND CONSTR OF CTCE GROUP