A comprehensive water-stop structure for deep foundation pits

Abstract

The invention relates to an integrated water stop structure for a deep foundation pit, which is suitable for stopping water of a gap in the periphery of a hidden section tunnel in the deep foundation pit. A water stop curtain wall is arranged in the gap between the lower part of the hidden section tunnel and the bottom of the deep foundation pit, so that seawater is prevented from flowing into an island from the gap below the hidden section tunnel; a buttress structure is arranged between the hidden section tunnel and a steel cylinder on each of the two sides of the hidden section tunnel, so that the seawater is prevented from flowing into the island from the two sides of the hidden section tunnel; the height of the top end of the hidden section tunnel is lower than sea level, a water stop wall is arranged above the hidden section tunnel, and the height of the top of the water stop wall is higher than the sea level, so that the seawater is prevented from flowing into the island from the upper part of the hidden section tunnel. According to the integrated water stop structure provided by the invention, different water stop schemes are applied to different positions of the hidden section tunnel, so that the problem that the requirement on integrated water stop in the deep foundation pit of an artificial island cannot be met by using the existing water stop technology alone is solved.

Description

technical field [0001] The invention relates to the technical field of water transportation engineering, in particular to a water-stop structure, and more particularly to a comprehensive water-stop structure for deep foundation pits under the condition of high water head difference overseas. Background technique [0002] The artificial island of the Hong Kong-Zhuhai-Macao Bridge was originally surrounded by large-diameter steel cylinders to form an artificial island body. This structure itself has a water-stop function and has become the first water-stop barrier. The artificial island tunnel of the Hong Kong-Zhuhai-Macao Bridge is constructed using the immersed pipe method. In order to ensure the watertightness of the tunnel, adjacent pipe sections and adjacent pipe sections are connected by deformation joint waterstops. [0003] However, the immersed tube tunnel needs to be docked with the buried tunnel on the artificial island. During the docking, the three steel cylinders...

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a comprehensive water-stopping structure for deep foundation pits. By applying different water-stopping schemes to different parts of buried tunnels, it is possible to solve the problem that the existing water-stopping technology alone cannot meet the needs of artificial island deep foundation pits. The problem of comprehensive water stop requirements

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