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Simple efficient open caisson deviation rectifying method

A high-efficiency technology for caissons, applied in caissons, buildings, infrastructure engineering, etc., can solve problems such as uneven stress on the walls of caissons, unsatisfactory rectification effects, and deflection, so as to reduce sinking resistance and rectify deflection. The effect is good and the operation process is simple

Inactive Publication Date: 2019-08-20
GUANGDONG TECHN COLLEGE OF WATER RESOURCES & ELECTRIC ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] During the construction process of the existing caisson, when the sinking resistance of one side of the caisson wall (the resistance comes from the frontal resistance of the soil below the caisson wall and the friction between the side of the caisson wall and the soil) is greater than When the gravity of the caisson well wall, or when the caisson well wall is locked by the surrounding soil and the friction force increases beyond the gravity on the well wall, the force on the caisson well wall will be uneven and deflection will occur Although there are currently methods for caisson deviation correction, such as partial excavation, high-pressure flushing, and heavy weighting, the correction effect is not very satisfactory

Method used

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  • Simple efficient open caisson deviation rectifying method
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  • Simple efficient open caisson deviation rectifying method

Examples

Experimental program
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Effect test

Embodiment 1

[0027] Such as figure 1 As shown, a simple and efficient caisson correction method of the present embodiment is characterized in that it includes the following steps:

[0028] (1) Select the correction tool: select the Larsen steel sheet pile 2 of the corresponding length according to the depth of the caisson 1;

[0029] (2) Partial excavation: excavate the earthwork at the bottom of the caisson 1 wall on the side where the caisson 1 cannot sink, so as to effectively reduce the frontal resistance of the well wall;

[0030] (3) Deviation correction: on the side where caisson 1 cannot sink, use Larsen steel sheet piles 2 to insert and pull in sequence along the outer side of caisson 1 wall, to loosen and liquefy the soil that hugs caisson 1 wall , reduce the side friction force of the sinking of the caisson 1 wall, and then enable the caisson 1 to sink smoothly under the action of gravity.

[0031] The depth of the caisson 1 is H1, the length of the Larsen steel sheet pile 2 i...

Embodiment 2

[0038] Such as figure 1 As shown, a simple and efficient caisson correction method of the present embodiment is characterized in that it includes the following steps:

[0039] (1) Select the correction tool: select the Larsen steel sheet pile 2 of the corresponding length according to the depth of the caisson 1;

[0040] (2) Partial excavation: excavate the earthwork at the bottom of the caisson 1 wall on the side where the caisson 1 cannot sink, so as to effectively reduce the frontal resistance of the well wall;

[0041] (3) Deviation correction: on the side where caisson 1 cannot sink, use Larsen steel sheet piles 2 to insert and pull in sequence along the outer side of caisson 1 wall, to loosen and liquefy the soil that hugs caisson 1 wall , reduce the side friction force of the sinking of the caisson 1 wall, and then enable the caisson 1 to sink smoothly under the action of gravity.

[0042] The depth of the caisson 1 is H1, the length of the Larsen steel sheet pile 2 i...

Embodiment 3

[0049] Such as figure 1 As shown, a simple and efficient caisson correction method of the present embodiment is characterized in that it includes the following steps:

[0050] (1) Select the correction tool: select the Larsen steel sheet pile 2 of the corresponding length according to the depth of the caisson 1;

[0051] (2) Partial excavation: excavate the earthwork at the bottom of the caisson 1 wall on the side where the caisson 1 cannot sink, so as to effectively reduce the frontal resistance of the well wall;

[0052] (3) Deviation correction: on the side where caisson 1 cannot sink, use Larsen steel sheet piles 2 to insert and pull in sequence along the outer side of caisson 1 wall, to loosen and liquefy the soil that hugs caisson 1 wall , reduce the side friction force of the sinking of the caisson 1 wall, and then enable the caisson 1 to sink smoothly under the action of gravity.

[0053] The depth of the caisson 1 is H1, the length of the Larsen steel sheet pile 2 i...

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Abstract

The invention discloses a simple efficient open caisson deviation rectifying method. The simple efficient open caisson deviation rectifying method is characterized by comprising the following steps that 1, a deviation rectifying tool is selected, wherein a stretching steel plate pile of the corresponding length is selected according to the depth of an open caisson; 2, locality deviation excavationis carried out, wherein for the side, which cannot sink down, of the wall of the open caisson, cubic meter of earth on the bottom of the wall of the open caisson is excavated; and 3, deviation is rectified, wherein for the side, which cannot sink down, of the open caisson, the stretching steel plate pile sequentially carries out inserting and pulling on the outer side of the wall of the open caisson. The depth of the open caisson is set to be H1, the length of the stretching steel plate pile is set to be H2, and the length H2 of the stretching steel plate pile is larger than or equal to the depth H1 of the open caisson. According to the simple efficient open caisson deviation rectifying method, the technology of the deviation rectifying method is simple, meanwhile, the deviation rectifying effect is good in practicality, and the method is efficient.

Description

technical field [0001] The invention relates to the field of construction engineering, in particular to a simple and efficient caisson deviation correction method. Background technique [0002] Since the 1950s in China, the construction of caissons has developed rapidly, and great achievements have been made. A large number of bridge abutment foundations, water intake structures, sewage pumping stations, underground industrial plants, large equipment foundations, underground warehouses, shield assembly shafts, mine shafts, underground lanes and stations and other large deep foundations and underground have been built in the form of caissons The enclosure of the structure. With the construction of cross-river, cross-bay, and strait bridges, China and Japan have vigorously developed deep-water foundations, and caisson construction technology has made great breakthroughs. [0003] During the construction process of the existing caisson, when the sinking resistance of one side...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D23/08E02D35/00
CPCE02D23/08E02D35/00
Inventor 兰冰兰一川边振华吴其波王钧
Owner GUANGDONG TECHN COLLEGE OF WATER RESOURCES & ELECTRIC ENG
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