Soft soil area mud-water balance open caisson station counterforce and locking system

Abstract

The invention belongs to the technical field of underground engineering construction, and particularly relates to a soft soil area mud-water balance open caisson station counterforce and locking system. The soft soil area mud-water balance open caisson station counterforce and locking system comprises a counterforce truss, jacks and locking devices; the counterforce truss comprises a crossbeam andvertical columns, and the two ends of the crossbeam are fixed to the two vertical columns correspondingly; and the bottoms of the two vertical columns are fixed to the ground, and the opposite sidesof the two vertical columns are provided with the locking devices used for being matched with locking buttresses on an open caisson section side wall to lock an open caisson section. According to thesoft soil area mud-water balance open caisson station counterforce and locking system, the jacks are arranged on the lower part of the counterforce truss to apply sinking power to an open caisson structure and adjust the attitude of an open caisson; and the locking devices are arranged on the two sides of the open caisson section, and the locking devices are matched with the locking buttresses onthe open caisson section side wall to lock the open caisson section, so that the next section of open caisson structure is spliced and poured or the current open caisson section is monitored, the construction speed of the open caisson is increased, and safety is ensured.

Description

technical field [0001] The invention belongs to the technical field of underground engineering construction, and in particular relates to a reaction force and locking system for a mud-water balance caisson station in a soft soil area. Background technique [0002] In traditional caisson construction, the soil inside the caisson is excavated while the caisson wall sinks, until the caisson wall sinks to the design elevation, and then the structural slabs of each layer are poured from bottom to top. During the sinking process of the caisson wall, if the sinking speed is too fast or too slow, usually adjust the frictional resistance of the side wall of the caisson wall (such as using thixotropic mud, air curtain, etc.) or reduce the resistance of the lower part of the blade foot Control the sinking of the caisson wall. [0003] Different from the traditional caisson construction method, the caisson station constructed by the mud-water balance method does not need to excavate th...

AI Technical Summary

Problems solved by technology

However, when the caisson sections of the station structure need to be vertically assembled and poured, or when the current caisson sections encounter conditions and need to stop sinking, it is difficult to lock the station structure at any time; During the sinking process, there may be a large water reaction force, causing the station structure to sink slowly, and even have an upward trend

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