Construction method of underwater pile bearing platform in flood-discharging area of river way

Abstract

The invention discloses a construction method of an underwater pile bearing platform in a flood-discharging area of a river way. The construction method comprises the following steps: 1, the strengthof a construction component is calculated according to the flood drainage requirement of the flood-discharging area of the river way; 2, measurement positioning is conducted, and a steel pipe pile (2)is mounted; 3, shape steel (3) is constructed on the steel pipe pile; 4, a sleeper beam (10) is positioned and mounted on the shape steel; 5, a platform (11) is laid on the sleeper beam; 6, measurement positioning is conducted, and a plurality of steel sheet piles (5) are mounted, the steel sheet piles are located on the inner side of the steel pipe pile, and unit bearing platform cofferdams areformed; 7, underwater engineering piles are constructed in inner areas of the double rows of cofferdams; 8, a bearing platform (13) and an overwater structure are constructed, and one bearing platformcofferdam unit is completed; and 9, steps 1 to 8 are repeated till construction of all bearing platform cofferdam units within the range (1) of the flood-discharging river way is completed. A water-stop cofferdam of a steel pipe pile platform internally connected with a Larsen steel sheet pile can be adopted, and stability of platform construction operation and safety and stability of underwaterconstruction can be guaranteed while flood-discharging navigation of the river way is ensured.

Description

technical field [0001] The invention relates to a construction method of a river flood discharge structure, in particular to a construction method of an underwater pile cap in a river flood discharge area. Background technique [0002] With the influence of environmental factors such as global warming, rainwater and floods have increased in recent years, and the corresponding river channel flood discharge area projects also have problems such as increased construction difficulty and increased risk. Most of the traditional river flood discharge structures use earth-rock dam cofferdams, steel sheet pile cofferdams, etc., which occupy a large area of ​​water blocking the river, have a large percentage of water blocking area, and have high backwater levels. There is a great risk of river flood discharge. With the development of technology, there are also river channel flood discharge structures constructed by floating cranes and steel temporary bridges in the existing technology...

AI Technical Summary

Problems solved by technology

With the development of technology, there are also river channel flood discharge structures constructed by floating cranes and steel temporary bridges in the existing technology, but the construction cost is expensive, which is not conducive to cost control, and is not suitable for popularization and application. At the same time, there are problems such as high construction difficulty and low efficiency.

In addition, most of the river flood discharge area projects in the existing technology are integrated structures, the consumables are high, and they cannot be reused. There is a greater construction risk in projects across small and medium-sized rivers

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