Capping beam and straining beam reverse construction method of concrete cylinder piers

Abstract

The invention relates to the field of bridge construction, in particular to a capping beam and straining beam reverse construction method of concrete cylinder piers. According to the method, on the basis of a traditional column formwork, embedded steel bar matrix holes are formed according to a straining beam steel bar arrangement diagram, it is achieved that steel bars are embedded at the embedded steel bar matrix positions according to requirements during the construction of bridge cylinder piers, straining beams are not constructed at first, pier columns are firstly constructed to the pier tops, then capping beams are constructed, finally, bottom supporting structures of the capping beams are integrally lowered to serve as bottom supporting structures of the nearest straining beam on the lower side, the straining beams are constructed, and construction is conducted on the straining beams in sequence in a height decreasing mode so as to achieve the aim of straining beam reverse construction. By means of the method, the problem that a construction road is changed or broadened can be avoided, and the method has the advantages that the pier column construction sections are reduced, the construction progress is accelerated, full and effective utilization of the construction formwork is ensured, the process that the bottom supporting structures of the straining beams and the capping beams need to be built and removed repeatedly is omitted, and the construction cost is reduced.

Description

technical field [0001] The invention relates to the field of construction of concrete cylindrical piers of bridges, in particular to a reverse sequence construction method of cap beams and tie beams of concrete cylindrical piers, and is suitable for the construction of concrete cylindrical piers of bridges with tie beams. Background technique [0002] At present, my country's highway infrastructure construction has advanced from plain areas to hilly and high mountains, and with the continuous improvement of national environmental protection laws and regulations, the concept of engineering environmental protection has been continuously strengthened. In transportation construction, from planning, survey and design, construction to operation, They are all implementing the concept and requirements of environmental protection. The form of bridges and tunnels gradually replaces large-scale filling and excavation and other construction methods that are more destructive to the environ...

AI Technical Summary

Problems solved by technology

[0005] 1. After the construction of some short tie beams is completed, the original construction access road will be affected. However, the slopes in the mountains and mountains are steep, and some are even rocky. It is difficult to change or partially widen the construction access road

[0006] 2. Construct in sequence, and the pier column must wait for the strength of the tie beam to meet the requirements before the pier column can continue to be constructed. The pier column construction section is increased, and the pier column construction time is increased. At the same time, the construction formwork takes a long time, and the pier column formwork has to be to fully utilize

[0007] 3. Construction is carried out in sequence. The bottom bracket of the tie beam, the cover beam and the bottom formwork need to be built and dismantled repeatedly. The construction is inconvenient and uneconomical

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