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Building method for open caisson for underground garage

A construction method and technology for underground garages, which are applied to caissons, buildings, underwater structures, etc., can solve the problems of increasing the maintenance work of the underground structure in the later stage, increasing the maintenance cost of the caisson, and high cost, so as to ensure the connection strength and waterproof performance, The construction process is simple and easy to control, and the effect of reducing production costs

Active Publication Date: 2016-10-12
JIANGSU DONGHENAN GEOTECHNICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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  • Building method for open caisson for underground garage
  • Building method for open caisson for underground garage
  • Building method for open caisson for underground garage

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0094] see figure 1 and figure 2 , the horizontal section of the underground garage in this embodiment is rectangular, where figure 2 Shown only as an example is the parking platform on one of the floors of the garage where vehicles are parked. The caisson of the underground garage is composed of a shaft wall and a frame installed in the shaft wall. The shaft wall adopts a steel-concrete structure. The shaft wall is specifically divided into three shafts. The third wellbore section, each wellbore section includes 32 steel-concrete structure segments, specifically 4 L-shaped positioning segments and 28 flat plate-shaped assembly segments. The frame is made of steel members, including interconnected horizontal beams and columns, and the frame acts as both the internal support of the caisson and the support frame of the parking platform. In this embodiment, the segments are plate-shaped and have two vertical longitudinal end faces; two adjacent segment segments in the horizo...

Embodiment 2

[0138] This embodiment is basically the same as Embodiment 1, the difference is that in this embodiment, the locking part is made of a linear steel sheet pile with a lock. For the convenience of description, the locking part of the segment 55 is called E locking The locking portion of the segment 56 is referred to as the F locking portion.

[0139] see Figure 22 and Figure 23 , Two E-locking portions 551 are provided on the longitudinal end surface 555 of the tube piece 55 ; two F-locking portions 561 are provided on the longitudinal end surface 565 of the tube piece 56 . Both the E locking part 551 and the F locking part 561 are made of linear steel sheet piles. Specifically, the linear steel sheet piles are cut in half along the center line of the web, and then cut to form several half-width linear steel sheet piles, and then the One end of the web plate of the semi-linear steel sheet pile is buried in the assembly segment, and the end with the lock protrudes from the long...

Embodiment 3

[0144] This embodiment is basically the same as Embodiment 1, the difference is that in this embodiment, the locking part is made of U-shaped steel sheet piles with locks, and the longitudinal end faces of the segments are planes, and each longitudinal end face is provided with A closure.

[0145] see Figure 25 , the locking part 63 is made of U-shaped steel sheet piles. Specifically, the U-shaped steel sheet piles are cut in half along the center line of the web, and then cut off to form several half-width U-shaped steel sheet piles, and then the webs of the half-width U-shaped steel sheet piles are One end of the plate is buried in the assembly segment, and the end with the lock protrudes from the longitudinal end surface.

[0146] Weld the water-stop steel plate 64 at the locked joint, and pour fine stone concrete 65 between the two left and right adjacent segments.

[0147] It can be understood that only the U-shaped steel sheet pile can be truncated along the length di...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D29/045E02D23/00
CPCE02D23/00E02D29/04
Inventor 王建兰郝刚王涛金宝林李仁民
Owner JIANGSU DONGHENAN GEOTECHNICAL TECH CO LTD
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