Bridge abutment structure with revetment function

Abstract

The invention belongs to the technical field of bridge components, and particularly relates to a bridge abutment structure with a revetment function. The bridge abutment structure designed by the invention comprises a wall body and a bearing platform for supporting a pile group, the wall body is divided into a back wall and a front wall which are connected into a whole, and a bracket for supporting the butt strap is arranged behind the back wall; a bearing platform is arranged below the wall body; the pile group bearing platform and the front wall of the wall body are flush with each other on the side facing the estuary. On the side facing the roadbed, the width of the bearing platform exceeds the width of the wall body of the front wall, and the width of the exceeding part is determined according to actual needs; the thickness of the bearing platform needs to meet the supporting strength and the construction requirements specified by design specifications. The bridge abutment with the revetment function is simple in structure and convenient to construct, is used for crossing a bridge of a river channel which is large in elevation difference between the river bottom and the shoreside ground and is provided with a vertical revetment, and can save the construction cost: the concrete consumption of the bridge abutment is reduced by about 40%; under the condition that the same stress requirement is met, the use amount of the pile foundation is reduced by about 40%; and meanwhile, the excavation depth of the foundation pit during bridge abutment construction is also reduced.

Description

technical field [0001] The invention belongs to the technical field of bridge components, and in particular relates to an abutment structure with a revetment function. Background technique [0002] In the existing riverbed and revetment section structures, when the gap between the designed river bottom elevation at the estuary and the designed ground elevation on the bank is large, vertical revetment retaining walls are usually installed at the estuary (see figure 1 ). [0003] When a bridge needs to be built to span the above types of rivers, in order to reduce the length of the bridge and to take into account the convenience, beauty and integration of the construction of the revetment and the bridge abutment, the abutment and the revetment are usually built together. The edge of the estuary is flush, and only abutments need to be built in the projected area under the bridge, which is also used as a revetment. This setting avoids the collision phenomenon near the estuary ...

AI Technical Summary

Problems solved by technology

[0013] Although the use of the double-row pile straight-arm abutment achieves the dual function of connecting the road and revetment and shortens the total length of the bridge, the concrete consumption index of the substructure is close to 1.0m 3 Per square meter, the lower part of the consumption index is relatively high, resulting in the cost per square meter of the bridge after equalization usually exceeds the fixed unit price, which often leads to insufficient funds in the implementation stage of the bridge

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