Integral hollow slab bridge structure based on ultra-high-performance concrete connection and construction method thereof

An ultra-high performance, bridge structure technology, applied in the direction of bridges, bridge parts, bridge construction, etc., can solve the problems that the disease has not been fundamentally solved, the horizontal integrity of the hollow slab is low, and the strength of ordinary concrete is low, and it can solve the problem of asphalt paving Easy to break, improve long-term use performance and durability, and improve the effect of lateral connection performance

CN107806008APending Publication Date: 2018-03-16SHANXI PROVINCIAL RES INST OF COMM
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2018-03-16

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Abstract

The invention discloses an integral hollow slab bridge structure based on ultra-high-performance concrete connection and a construction method thereof. The bridge structure is formed by connecting atleast three prefabricated hollow slab bridges in the transverse direction of the bridges through at least two ultra-high-performance concrete joints and a plurality of ultra-high-performance concretetransverse stripes. Each ultra-high-performance concrete joint comprises a hinge joint between every two hollow slab bridges and ultra-high-performance concrete longitudinal stripes. The hinge joint forms a basic frame through two prefabricated hollow slab bridge web plates, embedded transverse connecting steel bars extending out of the web plates, longitudinal steel bars and hoop bars and is filled with ultra-high-performance concrete. The ultra-high-performance concrete longitudinal stripes include steel bar frameworks formed by prefabricated bridge top slab extending steel bars, longitudinal steel bars and transverse steel bars, and the ultra-high-performance concrete longitudinal stripes and the hinge joints are filled with ultra-high-performance concrete simultaneously. The integral hollow slab bridge structure is good in stress performance, good in durability and remarkable in full-life economical benefit, and construction steps can be executed by adopting a traditional construction device and process and are simple, quick and convenient.
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Description

technical field

[0001] The present invention relates to the technical field of bridge engineering. Specifically, it provides an integrated hollow slab bridge structure based on ultra-high performance concrete connections and a construction method thereof. Hollow-core slab seams. Background technique

[0002] Prefabricated hollow slab bridges generally suffer from hinge joint shedding, water seepage, low horizontal integrity of hollow slabs, and bridge deck pavement damage, cracking, and shifting. There are too few horizontally connected steel bars, and ordinary concrete has low strength and poor durability. In addition, the design and calculation of the hollow slab is based on the hinged plate theory, which assumes that the ideal "hinge" only bears the shear force and ignores its tension; in fact, the hinge of the hollow slab is subjected to the longitudinal bending moment around the beam in addition to the shear force. The transverse bending moment when the hollow slabs w...

Examples

Embodiment

[0044] Such as Figure 1 to Figure 6 As shown, the integrated hollow slab bridge structure connected by ultra-high performance concrete in this embodiment is composed of three prefabricated hollow slab girders 1 passing through two ultra-high performance concrete joints and five superhigh Performance concrete transverse strips 13 are connected to form.

[0045] Such as Figure 1 ~ Figure 3 As shown, the ultra-high-performance concrete joint structure for the prefabricated hollow slab bridge of the present invention includes hinge joints 11 and ultra-high-performance concrete longitudinal strips 12 between two hollow slab girders. The hinged joint 11 is composed of two prefabricated hollow slab beams 1 webs and the pre-embedded transverse connecting steel bars 2 , longitudinal steel bars 4 , and stirrups 5 protruding from the webs to form a basic frame, which is filled with ultra-high performance concrete 8 . The ultra-high-performance concrete longitudinal strip 12 includes ...