Self-balancing steel sheet pile cofferdam and method for repairing underwater concrete lining

Abstract

The invention provides a self-balancing steel plate pile cofferdam. The self-balancing steel plate pile cofferdam comprises an outer frame, walings and inner supports, wherein the outer frame is defined by sequentially welding a plurality of vertically-arranged steel plate piles at Larson joints of the steel plate piles; the two steel plate piles at each corner of the outer frame are connected through a connecting piece, the multiple layers of walings are fixedly arranged on the inner side of the outer frame from top to bottom, and each layer of walings is composed of four waling bodies, and each waling body corresponds to one face of the outer frame; and a horizontal frame type structure is surrounded by every four waling bodies, and one inner support is fixedly connected to the corner ofeach layer of walings. The self-balancing steel plate pile cofferdam can be placed on a lining plate and does not damage other lining plates, and the damaged concrete lining plate can be replaced under the situation that normal water passing of a channel is ensured.

Description

technical field [0001] The invention belongs to the technical field of steel sheet pile cofferdams, in particular to a self-balancing steel sheet pile cofferdam and a method for repairing underwater concrete liners. Background technique [0002] The South-to-North Water Diversion Project is a large-scale cross-basin water transfer project that has attracted worldwide attention. A mega-foundational measure for regional water scarcity. Among them, the main line project of the middle route of the South-to-North Water Diversion Project is a major strategic infrastructure to alleviate the severe shortage of water resources in the Huanghuai-Hai Plain in my country and optimize the allocation of water resources. The total length of the main water transmission line is 1432km (including 156km of the main water transmission line in Tianjin). The main canal of the middle line is characterized by large scale, long canal line, various building styles, and many intersecting buildings. T...

AI Technical Summary

Problems solved by technology

That is, when the channel is cut off, different materials are poured into the cracks to repair the cracks. This method is difficult to apply to the repair of cracks in the South-to-North Water Diversion Channel, which shoulders the heavy responsibility of water use in the northern region, and will seriously affect the normal water supply in the northern region.

In addition, if there are too many cracks through the liner, it is difficult to guarantee its normal use in the future only by partial repair, so it is necessary to replace the old and new panels

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