Construction method for piers

Abstract

The invention discloses a construction method for piers, which comprises the following steps: (1) performing geological exploration, clearing stones at the river bottom, meanwhile integrally assembling an inner cofferdam support structure on a barge at other place, and assembling a drilling platform; (2) floating the inner cofferdam support structure in place, inserting and striking steel pipe piles and pile foundation steel casings of the drilling platform, mounting a connection tie between the steel pipe piles and the pile foundation steel casings of the drilling platform, hoisting the inner cofferdam support structure out of the barge, and hoisting and placing the inner cofferdam support structure on the connection tie in temporary place; (3) lowing the inner cofferdam support structure in place, and inserting and striking a steel plate pile cofferdam; (4) hoisting the drilling platform to the pile foundation steel casings in place, and mounting a drill on the drilling platform to drill holes; and (5) underwater absorbing mud and cleaning silt for the inner cofferdam support structure, underwater leveling the foundation, and pouring underwater bottom sealing concrete. The construction method changes scattered construction into integral construction, changes over-water construction into shore construction, and changes streamline construction into synchronous construction.

Description

technical field [0001] The invention relates to the technical field of bridge construction, in particular to a construction method of a bridge pier whose construction conditions are affected by external conditions such as construction work surfaces and flood seasons. Background technique [0002] At present, there are many construction methods for bridge pier construction, but conventional construction methods are generally only applicable to the situation where the construction work area is wide and the construction period is long. For the situation where the construction work area is narrow and the construction period is tight, the current conventional construction methods cannot meet the requirements: ①. Scattered construction requires a larger construction work area and a longer construction period; ②. Water construction requires a larger construction work ③, flow construction is less efficient and requires a longer construction period. [0003] In addition, in some cas...

AI Technical Summary

Problems solved by technology

[0002] At present, there are many construction methods for bridge pier construction, but conventional construction methods are generally only applicable to the situation where the construction work area is wide and the construction period is long

For the situation where the construction work area is narrow and the construction period is tight, the current conventional construction methods cannot meet the requirements: ①. Scattered construction requires a larger construction work area and a longer construction period; ②. Water construction requires a larger construction work surface; ③, flowing water construction is less efficient and requires a longer construction period

[0003] In addition, in some cases of poor construction environment: large fluctuations in flood and dry water levels, bridge piers close to wharfs, long-fuel refueling ships that have not been relocated nearby, embankments and river beaches on the shore side, and the distance to the slope top of the beach is too close Under such circumstances, the construction site of the bridge pier foundation is narrow, and the existing bridge pier construction method is difficult to carry out smooth construction under such circumstances.

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