Method for improving stress performance of negative bending moment zone of steel-concrete combined multi-box continuous beam bridge
A technology of negative bending moment area and steel box girder, which is applied in the direction of bridges, special data processing applications, instruments, etc., can solve problems such as complex construction technology, increased workload, and adverse effects of project cost
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[0015] Such as figure 1 , figure 2 , image 3 As shown, a method for improving the mechanical performance of the steel-concrete composite multi-box continuous girder bridge in the negative moment zone; the method is as follows:
[0016] The combined continuous girder bridge is composed of several separate small box girders connected horizontally. The upper part of each small box girder is a concrete bridge deck, and the lower part is a steel box girder. The two are connected as a whole by the shear connector of the upper flange of the steel box girder; The whole bridge is equipped with ordinary stressed steel bars and structural steel bars in the concrete bridge deck, and ordinary transverse and longitudinal stiffeners are set in the steel box girder; After the bridge deck is poured and holes are reserved, pour concrete through the holes on the steel box girder floor in the negative moment zone, and its label is the same as that of the bridge deck concrete; the thickness of...
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