Building method for open caisson for underground garage

Abstract

The invention discloses a building method for an open caisson for an underground garage. The open caisson is composed of a well wall and a framework mounted in the well wall. The well wall is composed of N well cylinders stacked from top to bottom, wherein N is larger than or equal to 2 and smaller than or equal to 15. In the building process, firstly, prefabricated pipe pieces are assembled through concrete guide walls to form one well cylinder, and a part of the framework is built in each well cylinder; and after all the well cylinders are assembled, sinking is conducted, then the well cylinders are successively assembled and subjected to sinking till all the well cylinders and the framework are completed, and assembly and sinking of the open caisson are completed. According to the building method for the open caisson for the underground garage, the well wall of the open caisson is formed by assembling the pipe pieces, the pipe pieces are prefabricated, and standard manufacturing is facilitated; and when needed, the pipe pieces can be conveyed to the designated area for assembly of the open caisson, and it is avoided that when an open caisson is built through a cast-in-site manner, and the tedious processes such as prestress applying and concrete pouring are needed, so that concrete curing can be eliminated, construction efficiency is improved, and the engineering cost is lowered.

Description

technical field [0001] The invention belongs to the construction field of underground garages, and in particular relates to a construction method of caissons for underground garages. Background technique [0002] With the development of the economy, urban land is increasingly in short supply. Intensive and economical use of land, scientific and rational development and utilization of urban underground space, and development of new living and development space have become an inevitable choice. Many domestic cities have gradually emerged to develop and utilize underground space. upsurge. The development and utilization of underground space can alleviate traffic congestion, reduce urban air pollution, improve urban ecological environment, and facilitate urban people's life. The problems of traffic difficulties, road difficulties and parking difficulties in large and medium-sized cities are common and increasingly serious. Urban underground parking lots can effectively allevia...

AI Technical Summary

Problems solved by technology

The amount of prestressed tendons used in this method is very large, the cost is high, and the main structure is difficult to maintain in the later stage. As time goes by, the failure of prestressed tendons will lead to a sharp increase in the maintenance cost of the caisson; the garage built in this application is not It can achieve good waterproof performance. In this application, each prefabricated concrete component is only fastened and connected by prestressed tendons and anchors. There are no effective waterproof measures. Later, the underground structure will encounter many problems of water seepage and moisture return during use.

In addition, since the prestressed tendons have the characteristics of relaxation with the extension of time, this will increase the post-maintenance work of the underground structure.

[0009] Generally speaking, there are still many problems in the construction process of caissons, such as complicated construction process and high construction cost.

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