Structure of integral type web girder and concrete bridge abutment combination part
A concrete and integral technology, applied in the direction of bridges, bridge parts, bridge construction, etc., can solve the problems of concrete pulling and cracking, increasing the difficulty of structural design and on-site construction, and large axial stiffness of steel beams.
Pending Publication Date: 2019-05-28
HUAQIAO UNIVERSITY
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Problems solved by technology
The existing integral composite girders mostly use steel plate girders or steel box girders. The steel girders have relatively high axial stiffness. Concrete tensile cracking and other diseases
At the same time, welding stud connectors or perforated plate connectors are often arranged at the junction of the steel beam and the concrete abutment, and a large number of connectors need to be arranged in a limited space to transmit the bending moment, shear force and axial force between the upper and lower structures. This increases the difficulty of structural design and on-site construction
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[0018] Such as figure 1 As shown, the joint structure of the integral web beam and the concrete abutment includes a steel web girder 1, a concrete roof 2, a concrete bottom plate 3 and a concrete abutment 4 connected as one.
[0019] Such as figure 1 and figure 2 As shown, the steel web beam 1 includes a steel upper flange 5, a steel lower flange 6, a folded web 7 and a slot T rib 8, and the folded web 7 is welded to the steel upper flange 5 and the steel lower flange 6 Between them, the slotted T rib 8 is welded on the steel upper flange 5; part of the steel web girder 1 is embedded in the concrete abutment 4, and the concrete roof 3 is poured above the steel upper flange 5 and the steel lower flange 6 respectively. , concrete floor 4.
[0020] Such as figure 2 and image 3 As shown, the folded web 7 is in the form of a wave formed by bending flat steel plates along the longitudinal bridge direction. The folded web 7 can release the axial deformation of the steel web b...
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The invention discloses a structure of an integral type web girder and a concrete bridge abutment combination part. The structure comprises steel web girders and a concrete bridge abutment connected into one. Each of the steel web girders comprises a top steel flange, a bottom steel flange, a web and slot T-ribs, wherein the web is welded between the top steel flange and the bottom steel flange, and the slot T-ribs are welded to the top steel flange; parts of plate segments of the steel web girders are embedded into the concrete bridge abutment, and a top concrete plate and a bottom concrete plate are poured above the top steel flange and the bottom steel flange respectively; first long holes are formed in a plate segment of the web, which is embedded into the concrete bridge abutment; each of the slot T-ribs comprises T-shaped reinforcing ribs, second long holes are formed in the T-shaped reinforcing ribs, and a notch is formed in the upper edge of the each of the second long holes; reinforcing steel bars are arranged additionally, each of the reinforcing steel bars is arranged in each of the first long holes in a penetrating manner, and each of the reinforcing steel bars is placed into each of the second long holes through each of the notches and is fixed. The structure has the advantages that the local tensile stress of concrete can be reduced, the stress performance of thesteel and concrete combination part is enhanced, and the on-site construction efficiency of a bridge in the combination structure is improved.
Description
technical field [0001] The invention belongs to the technical field of bridge structures, and in particular relates to the joint structure of an integral web beam and a concrete abutment. Background technique [0002] Most of the small and medium-span bridges in my country adopt the traditional simple-supported girder bridge design, and the number of supports and expansion joints is huge. Carried traffic has an impact. As a new type of structure, the integral bridge is characterized by the rigid pouring of the superstructure, abutment and pier as a whole, canceling the support and expansion joints set in the traditional bridge design, and fundamentally avoiding the need for long-term operation of the support. It can significantly reduce the life cycle cost of the bridge and has broad application prospects. [0003] The joint of the integral concrete beam and the abutment is directly poured into one body, while the joint of the integral composite beam and the abutment is the...
Claims
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IPC IPC(8): E01D19/00
Inventor 郑双杰许斌霍静思李海锋高毅超庄思思
Owner HUAQIAO UNIVERSITY