A construction method of continuous rigid frame bridge

Abstract

The present invention relates to the technical field of continuous rigid frame construction, and discloses a construction method of a continuous rigid frame bridge, including N bridge piers arranged in sequence, and 0# blocks on the bridge piers include A0 and B0, and the construction method has the following steps: construction Pile foundation, cap and pier body; set up 0# block brackets for the middle N-2 bridge piers, and construct corresponding 0# blocks of A0 and B0 categories respectively; remove the 0# block brackets, The hanging baskets are symmetrically assembled on both sides of the 0# block of the B0 category, and the cast-in-place supports for the straight section of the side span are erected; the main beam section to the largest cantilever section of the main beam is constructed sequentially with cantilever symmetry; the construction is carried out step by step according to the principle of first side span and then middle span In the closing section, the closing of the main girder is completed; after the gaps between the adjacent side spans of the side piers and the 0# blocks of type B0 are all closed, the temporary filling device between the gaps is removed, and the side spans are temporarily tensioned and prestressed; the hanging basket is removed, Carry out bridge laying and other work. The invention avoids the construction and dismantling of a large number of temporary facilities, saves construction time and improves construction safety.

Description

technical field [0001] The invention relates to the technical field of continuous rigid frame construction, in particular to a construction method of a continuous rigid frame bridge. Background technique [0002] Continuous rigid frame bridges are widely used in bridges in my country due to their own advantages. However, due to the particularity of bridge construction, when the foundation conditions of the side span foundation are poor, the pier body is high, the water area is crossed or the foundation is weak, the traditional bracket closing method is used. , the construction cost and difficulty are significantly increased, and there are high safety risks. Contents of the invention [0003] In order to solve the above technical problems, the present invention provides a construction method for a continuous rigid frame bridge, which avoids the construction and dismantling of a large number of temporary facilities, saves construction time, and improves construction safety. ...

AI Technical Summary

Problems solved by technology

[0002] Continuous rigid frame bridges are widely used in bridges in my country due to their own advantages. However, due to the particularity of bridge construction, when the foundation conditions of the side span foundation are poor, the pier body is high, the water area is crossed or the foundation is weak, the traditional bracket closing method is used. , the construction cost and difficulty are significantly increased, and there are high safety risks

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