Method for constructing bridge and bridge

Abstract

The invention relates to a method for constructing a bridge and the bridge. The method includes the steps that S100, in preparation of a formwork, a formwork component permanently connected with a concrete-pouring bridge body is made; S200, in hoisting of the formwork, the formwork component is hoisted to the position between two concrete body cantilever segments; S300, in concrete pouring of theformwork, the concrete-pouring bridge body is formed by performing concrete pouring on the formwork component. Firstly, the formwork component which is permanently connected with the concrete-pouringbridge body is prefabricated; hoisting equipment is adopted for hoisting the formwork component to the position between the two concrete body cantilever segments, and concrete pouring treatment is performed on the formwork component; because the formwork component is permanently connected with the concrete-pouring bridge body, the formwork component does not need to be disassembled when the bridgebody is constructed, accordingly, when the bridge crossing existing roads is constructed, the distance between the bottom of the formwork component to the existing roads is the net height of the existing roads at a later period, all operation in the construction is completed in the formwork component, and using influences of construction of the bridge crossing the existing rods on the roads belowthe bridge are reduced; with the formwork component, the structural stress feature of the concrete-pouring bridge body is not changed, and designing difficulty is not increased.

Description

technical field [0001] The invention relates to the technical field of bridge construction, in particular to a bridge construction method and a bridge. Background technique [0002] With the rapid development of traffic in recent years, the density of my country's road network has continued to increase. There are more and more intersections between newly built roads and existing roads. There are more and more bridges spanning existing roads, and the span requirements are also increasing. Therefore, Prestressed concrete continuous box girder with variable section or equal section is mostly used. In order to reduce the impact on the traffic under the bridge, the construction plan mostly adopts hanging baskets to cast. However, during the construction of the hanging basket, the temporary headroom for construction needs to be more than 1.2m; the elevation of the upper-span bridge has to be increased during the design, and the scale of the bridge needs to be increased accordingly...

AI Technical Summary

Problems solved by technology

If the elevation of the bridge cannot be raised due to other factors, the road under the bridge needs to be closed, restricted, height-limited, and speed-limited during the construction process, which seriously affects the passage or toll of the road under the bridge, and also brings adverse social impacts

If steel structure bridges are used instead, the cost will increase significantly

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