Construction method of a cable-stayed bendable trestle structure

Abstract

The invention discloses a cable-stayed bendable opening trestle structure and a construction method thereof. The method comprises the steps as follows: two groups of lattice columns are respectively arranged at each side of a set bridge floor position; a distribution base is arranged at the top end of each lattice column; a winding engine is arranged on each distribution base; fixed support piles are plugged into the inner sides of the lattice columns at two sides; bent pier pipe piles are plugged between the two groups of lattice columns at the same side; an H-shaped steel beam is hoisted on the tops of a plurality of bent pier pipe piles at each side; an upper structure of a unilateral bridge is arranged on the H-shaped steel beam at each side; the tension ends of front stay cables which are connected with two of the four winding engines at one side are fixed at the front end parts of front open sections at the same side; the tension ends of rear stay cables which are connected with the other two winding engines at the side are fixed at the front ends of rear open sections of the side. By adopting the method, the navigable clearance limit of a channel is removed by the design of a cable-stayed system bending structure, and a large ship can be ensured to pass under the permissive condition of the ship width.

Description

technical field [0001] The invention relates to the field of bridge engineering construction, in particular to a structure and a construction method of a trestle used in the construction of bridges requiring navigation. Background technique [0002] At present, the known bridge construction in waters with navigation needs mainly adopts the portal structure trestle method. This construction method can only allow small and low ships to pass through, and if the navigation clearance is too large, it will cause damage to the construction on both sides of the bridge. The impact makes the transportation inconvenient, which is not conducive to the turnover of construction machinery and materials. In addition, patents with publication numbers CN202369929U and CN202688850U disclose a lifting device that can only provide limited navigation clearance, and the height limit of the navigation clearance is the difference between the height of the lattice column above the water surface and t...

AI Technical Summary

Problems solved by technology

[0002] At present, the known bridge construction in waters with navigation needs mainly adopts the portal structure trestle method. This construction method can only allow small and low ships to pass through, and if the navigation clearance is too large, it will cause damage to the construction on both sides of the bridge. impact, making transportation inconvenient and not conducive to the turnover of construction machinery and materials

In addition, patents with publication numbers CN202369929U and CN202688850U disclose a lifting device that can only provide limited navigation clearance, and the height limit of the navigation clearance is the difference between the height of the lattice column above the water surface and the height of the temporary bridge. Difference

Images