A construction method for the reconstruction and expansion of a new bridge on the original site of the bridge under the condition of keeping the passage

Abstract

The invention discloses a construction method for renovating and expanding a new bridge at the original site of a bridge under the condition of maintaining traffic, and relates to the technical field of viaduct bridge engineering construction. For the old bridge, the demolished part of the old bridge is used as the construction area, and the remaining part of the old bridge is used as the passageway; new ground bridges or temporary bridges; The prefabricated beams were constructed, and the passage part of the old bridge was transformed into a construction passage during the construction process. The advantages of the present invention are: in this method, only the part of the old bridge that blocks the construction of the new bridge is removed, and then the remaining part of the old bridge is used as a passage for keeping the road and a passage for construction to ensure the passage of the road and enhance the overall construction efficiency while renovating and expanding. In order to unify the requirements and schedule requirements in the complex external environment.

Description

technical field [0001] The invention relates to the technical field of viaduct bridge engineering construction, in particular to a construction method for rebuilding and expanding a new bridge at the original site of the bridge under the condition of maintaining traffic. Background technique [0002] With the development of urbanization in China, the scale of cities is getting bigger and bigger. The traffic connection between the city center and the suburbs of the city has become one of the bottlenecks in the development of most cities. Now the mainstream solution is to vigorously build urban expressways or rail transit. If the rail transit The ground line can also allow rail transit and urban expressways to be laid on the composite elevated to reduce costs and construction difficulties. At present, urban expressways are mainly divided into elevated-ground composite mode and purely elevated mode. The purely elevated mode is suitable for crossing non-agglomerated areas, and t...

AI Technical Summary

Problems solved by technology

[0003] The main purpose of the present invention is to provide a construction method for rebuilding and expanding the new bridge at the original site of the bridge under the condition of maintaining traffic. In this method, only the part of the old bridge that blocks the construction of the new bridge is removed, and then the remaining part of the old bridge is used as the passage for ensuring traffic and construction. During the renovation and expansion of the channel, the passage of the road is ensured and the overall construction efficiency is enhanced, which solves the unification of the requirements of the traffic guarantee and the progress in the complex external environment