Concrete continuous tooth wall structure without structural joints and construction method

Abstract

The invention discloses a concrete continuous tooth wall structure without structural joints. The concrete continuous tooth wall structure comprises a concrete tooth wall which is arranged in a full-length mode and is not provided with the structural joints, a plurality of grooves are formed in the top of the concrete tooth wall at intervals, induction joints are formed in the bottoms of the grooves, silty-fine sand soil is laid in the grooves, and geotechnical cloth covers the silty-fine sand soil. The concrete continuous tooth wall structure is suitable for hydropower and hydraulic engineering adopting concrete tooth wall seepage prevention, through structural arrangement type optimization design, structural parting is canceled, the construction procedure is simplified, long-term operation safety of dam and reservoir seepage prevention systems is guaranteed, and economic losses caused by maintenance after reservoir water storage are reduced.

Description

technical field [0001] The invention relates to the field of hydropower and hydraulic engineering, in particular to a concrete continuous tooth wall structure without structural joints. Especially when it comes to dam cutoff walls, there are local surface anti-seepage requirements, and the reservoir basin project needs to set up seepage interception around the concrete tooth wall. Background technique [0002] For dam cut-off walls or reservoirs that require partial surface anti-seepage, concrete tooth walls are generally installed on the edge of the dam foundation and anti-seepage area, and curtain grouting is arranged to cut off the gap between the reservoir water and the bottom of the anti-seepage area. Hydraulic connection. Due to the long dams and large reservoir basins of some projects, some concrete tooth walls are hundreds of meters long. In order to prevent cracks in the tooth wall, structural joints are generally set every 10-20m to adapt to its deformation. [...

AI Technical Summary

Problems solved by technology

[0004] 1. The tooth wall is provided with structural joints every 10-20m, and the construction is troublesome

[0005] 2. The water stop is installed at the structural joints, which becomes the weak link of anti-seepage. During the construction, there are often vibrations and incomplete compaction near the water stop, and the construction quality is difficult to control

[0006] 3. Due to the large number of structural joints, if the lea

Images