Hinge joint structure of precast assembled hollow slab beam and construction method thereof
A hollow slab girder and prefabricated assembly technology, which is applied to bridges, bridge parts, bridge materials, etc., can solve the problems of inconvenient construction and complicated steel structure, and achieve the effects of convenient construction, increased shear bearing capacity, and improved reliability
Active Publication Date: 2018-12-07
SHANGHAI INVESTIGATION DESIGN & RES INST
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Problems solved by technology
Although the hinged joint reinforcement structure of the above concrete hollow slab bridge connects two hollow slabs, the structure of the hinged joint structure is complicated and the construction is inconvenient
Method used
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[0041] The implementation of the present invention will be illustrated by specific specific examples below, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.
[0042] It should be noted that the structures, proportions, sizes, etc. shown in the drawings attached to this specification are only used to match the content disclosed in the specification, for those who are familiar with this technology to understand and read, and are not used to limit the implementation of the present invention. Limiting conditions, so there is no technical substantive meaning, any modification of structure, change of proportional relationship or adjustment of size, without affecting the effect and purpose of the present invention, should still fall within the scope of the present invention. The disclosed technical content must be within the scope covered. At the same time, terms such as "upper"...
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The invention provides a hinge joint structure of a prefabricated assembled hollow slab beam, which comprises a first prefabricated hollow slab beam and a second prefabricated hollow slab beam, wherein the first prefabricated hollow slab beam and the second prefabricated hollow slab beam are connected by hinge joint; The first prefabricated hollow slab beam is internally provided with a first bending steel bar, and the first bending steel bar enters the hinge joint from the lower edge of the first prefabricated hollow slab beam and is bent upward; The second prefabricated hollow slab beam is provided with a second bending steel bar, the second bending reinforcement protrudes into the hinge joint from the lower edge of the second prefabricated hollow slab beam and is bent upward, and a portion of the first bending reinforcement and the second bending reinforcement located in the hinge joint forms a closed stirrup. The invention also provides a construction method of a hinge joint structure of a prefabricated hollow plate beam. The structure is simple, the construction is convenient and the cost is low. the first bending steel bar and the second bending steel bar form the stirrup, the reliability of the transverse connection between the hinge joint and the hollow slab beam is improved, and the shear bearing capacity of the whole slab beam is increased.
Description
technical field [0001] The invention relates to the technical field of bridge structures, in particular to a hinge joint structure of a prefabricated assembled hollow slab girder and a construction method thereof. Background technique [0002] The prefabricated simply supported hollow slab bridge has simple structure and convenient construction, and is widely used in small and medium span bridges. The assembled hollow slabs are horizontally connected by hinge joints. Under the action of external loads, each hollow slab participates in the stress. The connection of hinge joints is the key to the lateral force transmission of slab girders. The actual investigation of the prefabricated concrete simply supported slab bridges found that the damage phenomenon of concrete hinge joints is common, such as hinge joint concrete cracking, damage, spalling and hinge joint structural reinforcement Fracture, etc., the damage of the hinge joints increases the load on some slab girders, red...
Claims
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IPC IPC(8): E01D19/12E01D101/26
CPCE01D19/125E01D2101/26Y02A30/60
Inventor 高金
Owner SHANGHAI INVESTIGATION DESIGN & RES INST