Deep and large open caisson prefabricated structure and mounting method thereof

Abstract

The invention belongs to the field of civil engineering, and particularly relates to a deep and large open caisson prefabricated structure and a mounting method thereof. The open caisson prefabricatedstructure and the mounting method thereof have the beneficial effects that the industrialized processing advantages are fully utilized, processing of a deep and large open caisson is decomposed intoin-situ casting of a foot blade and prefabricating and assembling of ring pieces; by means of the foot blade and the ring pieces, connecting bolt hole channels are pre-embedded, and effective connection between the prefabricated ring pieces and effective connection between the prefabricated ring pieces and the foot blade are achieved; a counter-force frame foundation constructed in advance is utilized, and pressurization counter-force is provided through a hydraulic device so as to assist in sinking; and sinking-assisting hole channels are pre-embedded when the ring pieces are prefabricated, and effective assistance can also be achieved. The method prefabricating and installing the ring pieces in sequence for the deep and large open caisson is simple in principle, easy to operate, economical and reliable and suitable for fast construction of the open caisson; and as for the engineering which is particularly limited by construction clearance height and short in construction period, theopen caisson construction without drainage sinking is adopted, and therefore, a support can be prevented from being erected and disassembled, continuous and uniform sinking can be realized, the construction period can be shortened, and the cost can be reduced.

Description

technical field [0001] The invention belongs to the field of civil engineering, and in particular relates to a prefabricated structure of a deep caisson and an installation method thereof. Background technique [0002] With the needs of urban development and the maturity of pipe jacking technology, pipe jacking construction is increasing, and caisson construction is more common for working wells and receiving wells. Restricted by geological conditions and the surrounding environment, the advantages of undrained subsidence are becoming more and more obvious. Using segmental cast-in-place and then sinking, in places limited by clearance, the construction period will be difficult to control, and even lock-up will occur. Therefore be badly in need of a kind of deep and large caisson installation method that can avoid long-time unsinking and lock-up phenomenon of well wall. Contents of the invention [0003] In order to give full play to the advantages of undrained sinking and...

AI Technical Summary

Problems solved by technology

Restricted by geological conditions and the surrounding environment, the advantages of undrained sinking are becoming more and more obvious. Using segmental cast-in-place and then sinking, in places limited by clearance, the construction period will be difficult to control, and even lock-up will occur

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