Open caisson construction method of flowing muddy mollisol

A construction method and caisson technology, which is applied to caissons, infrastructure engineering, construction, etc., can solve problems affecting the normal use of caissons and cannot solve the problem of final elevation control of caissons, so as to achieve uniform and stable caisson sinking and construction efficiency High, simple effect of foundation reinforcement

Inactive Publication Date: 2013-02-13
天津华悦工程咨询有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially in the construction of caissons under flow-plastic soft soil conditions, there are very real construction problems. In addition to construction safety and operational stability, there is also the problem of controlling the final elevation of caissons that cannot be solved. The actual final elevation of caissons and The design requirements vary greatly, and the accuracy of the final elevation control causes a series of follow-up problems, even affecting the normal use of caissons

Method used

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  • Open caisson construction method of flowing muddy mollisol
  • Open caisson construction method of flowing muddy mollisol
  • Open caisson construction method of flowing muddy mollisol

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A caisson construction method for flow-plastic soft soil, comprising foundation treatment, caisson fabrication, caisson sinking, and caisson bottom sealing construction process; the caisson sinking construction process is as follows:

[0032] 1. Set up caisson support: set up caisson support 6 cement-soil mixing piles at the four symmetrical corners of the pre-installation position of the caisson. 5 for support;

[0033] 2. The caisson is in place: place the caisson 1 on the cement-soil mixing pile of the caisson support 6 set in step (1); see figure 1 with figure 2 .

[0034] 3. Sinking of the caisson: After the caisson is in place or the caisson is fabricated, remove the top 200mm of the cement-soil mixing pile. During the removal process, if the strength of the remaining cement mixing pile at the position to be positioned and supported is not strong enough, the caisson will crush all the piles. The remaining cement-soil mixing pile sinks the caisson by 200mm, ...

Embodiment 2

[0036] A caisson construction method for flow-plastic soft soil, comprising foundation treatment, caisson manufacturing, caisson sinking, and caisson bottom sealing construction process; the caisson sinking construction process under the condition of flow-plastic soft soil is:

[0037] 1. Set up caisson support: set up cement-soil mixing piles at the appropriate positions of caisson pre-installation or fabrication of caisson planes, and after the cement-soil mixing piles are solidified, they are used to support the caisson blade foot when the caisson 7 sinks;

[0038] 2. Barrier 8 is set on the outside of the caisson support: when the caisson support 9 is set, a circle of cement-soil mixing piles for preventing flow of plastic soft soil into the caisson is set at the outside of the caisson support. see Figure 4 with Figure 5 shown.

[0039] 3. Place the caisson in place: place or fabricate the caisson on the cement-soil mixing pile supported by the caisson set in step (...

Embodiment 3

[0043] A caisson construction method in flow-plastic soft soil, including foundation treatment, caisson fabrication, caisson sinking, and caisson bottom sealing construction process; the bottom of caisson 10 is provided with support beams 11, which are placed in flow-plastic soft soil The sinking construction process of caisson 10 under the condition is:

[0044] 1. Setting caisson support 13: The caisson support is set on the outer side of the caisson support beam, and the drilled caisson support is a cement-soil mixing pile. After the cement-soil mixing pile is solidified, it is used to support the caisson when the caisson sinks Beam 11 supports;

[0045] 2. Set up barriers on the outside of the caisson support: When setting up the cement-soil mixing piles supported by the caissons, a circle of cement-soil mixing piles to prevent the plastic soft soil from flowing into the caissons should be set on the outside of the caisson support cement-soil mixing piles as a barrier B...

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Abstract

The invention relates to an open caisson construction method of flowing muddy mollisol and belongs to the technical field of open caisson engineering. The open caisson construction method of the flowing muddy mollisol comprises the procedures of open caisson making, open caisson sinking and open caisson bottom sealing and is characterized by comprising the following steps of: (1) constructing an open caisson support: constructing the support at an open caisson pre-installation position, wherein the support is used for supporting an open caisson when the open caisson sinks; (2) positioning the open caisson or making the open caisson: arranging the open caisson above the open caisson support, or making the open caisson on the open caisson support; (3) sinking the open caisson: after the open caisson is positioned or made, removing the top of the open caisson support to sink the open caisson for some distance, and then removing the top of the open caisson support to further sink the open caisson for some distance, and repeating the steps until the open caisson sinks to a needed position. The open caisson construction method has the advantages of convenience in construction, high safety, uniformity and stability in open caisson sinking, simplicity in reinforcing and good controllability of making the open caisson, precise final sinking elevation, high construction efficiency, and the like.

Description

technical field [0001] The invention belongs to the technical field of caisson engineering, and in particular relates to a caisson construction method for flow-plastic soft soil. Background technique [0002] At present, the construction of caisson engineering includes foundation treatment, installation of backing wood, caisson fabrication, caisson sinking and caisson bottom sealing process, among which caisson fabrication, caisson sinking and caisson bottom sealing are three key processes. Among them, the sinking of the caisson in the caisson project needs to be controlled emphatically. Especially in the construction of caissons under flow-plastic soft soil conditions, there are very real construction problems. In addition to construction safety and operational stability, there is also the problem of controlling the final elevation of caissons that cannot be solved. The actual final elevation of caissons and The design requirements vary greatly, and the accuracy of the fin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D23/08
Inventor 刘福林于洪涛江春高阳解明杰任晓亮韩颖
Owner 天津华悦工程咨询有限公司
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