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Open caisson vibroflotation pile composite foundation construction process

A composite foundation and construction technology technology, which is applied in basic structure engineering, sheet pile walls, buildings, etc., can solve the problems of poor quality of piles, difficult to deal with hole collapse phenomenon, affecting the bearing capacity of foundations, etc. The quality is easy to guarantee, the hole is not easy to collapse, and the bearing capacity is high.

Inactive Publication Date: 2017-06-13
IANGSU COLLEGE OF ENG & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] During the construction process of the traditional vibrating foundation, many problems have appeared, especially the serious hole collapse phenomenon in the process of pile hole formation, which has brought a lot of inconvenience to the on-site construction operation, and the quality of the final pile is also poor. Not very good, seriously affecting the bearing capacity of the foundation
At the same time, it is difficult and time-consuming to deal with the phenomenon of hole collapse in the formed hole, which causes many problems to the construction

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A construction technology of caisson vibro pile composite foundation, comprising the following steps:

[0024] 1) Positioning: The crane moves to the designated pile position, lifts the vibrator and keeps it stable and vertical. When the ground is undulating, the base should be adjusted to keep it level;

[0025] 2) Buried casing: Before burying, the center position of the pile hole should be determined and numbered according to the design drawing. Rush direction; the casing is made of 10mm thick steel plate, the inner diameter is 50mm larger than the outer diameter of the prefabricated tube well, the top surface is 300mm higher than the ground, and the buried depth is not less than 1.8m;

[0026] 3) Vibration sinking debugging: start the submersible motor to drive the eccentric block, so that the vibrator produces high-frequency vibration, and at the same time start the water pump, spray high-pressure water through the nozzle to form a hole, the initial hole depth is c...

Embodiment 2

[0035] A construction technology of caisson vibro pile composite foundation, comprising the following steps:

[0036] 1) Positioning: The crane moves to the designated pile position, lifts the vibrator and keeps it stable and vertical. When the ground is undulating, the base should be adjusted to keep it level;

[0037] 2) Buried casing: Before burying, the center position of the pile hole should be determined and numbered according to the design drawing. Rush direction; the casing is made of 10mm thick steel plate, the inner diameter is 100mm larger than the outer diameter of the prefabricated tube well, the top surface is 500mm higher than the ground, and the buried depth is not less than 1.8m;

[0038] 3) Vibration sinking debugging: start the submersible motor to drive the eccentric block, so that the vibrator produces high-frequency vibration, and at the same time start the water pump, spray high-pressure water flow through the nozzle to form a hole, the initial hole dept...

Embodiment 3

[0047] A construction technology of caisson vibro pile composite foundation, comprising the following steps:

[0048]1) Positioning: The crane moves to the designated pile position, lifts the vibrator and keeps it stable and vertical. When the ground is undulating, the base should be adjusted to keep it level;

[0049] 2) Buried casing: Before burying, the center position of the pile hole should be determined and numbered according to the design drawing. Rush direction; the casing is made of 10mm thick steel plate, the inner diameter is 75mm larger than the outer diameter of the prefabricated tube well, the top surface is 400mm above the ground, and the buried depth is not less than 1.8m;

[0050] 3) Vibration sinking debugging: start the submersible motor to drive the eccentric block, so that the vibrator produces high-frequency vibration, and at the same time start the water pump, spray high-pressure water flow through the nozzle to form a hole, the initial hole depth is con...

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Abstract

The invention discloses a construction process of a caisson vibro pile composite foundation, the construction method comprising the following steps: a. positioning; b. embedding a casing; c. vibrating sinking debugging; d. . Vibration sinking; f. Prefabricated tube well extension; g. Continue vibrating sinking; h. Filling; k. Vibration density, pile formation; The invention has the characteristics of reliable technology, simple and convenient construction, not easy to collapse the hole during the hole forming process, easy to ensure the quality of the pile body, fast foundation reinforcement speed, good effect, high foundation bearing capacity and the like.

Description

technical field [0001] The invention relates to a construction technology of caisson vibro pile composite foundation, which belongs to the technical field of civil engineering construction. Background technique [0002] During the construction process of the traditional vibrating foundation, many problems have appeared, especially the serious hole collapse phenomenon in the process of pile hole formation, which has brought a lot of inconvenience to the on-site construction operation, and the quality of the final pile is also poor. Not very good, seriously affecting the bearing capacity of the foundation. At the same time, it is difficult and time-consuming to deal with the phenomenon of hole collapse in the formed hole, which causes many problems to the construction. Contents of the invention [0003] Purpose of the invention: In view of the deficiencies in the prior art, the present invention proposes a technology that is reliable, easy to construct, not easy to collapse...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D7/26E02D5/38
CPCE02D7/26E02D5/38
Inventor 高路恒
Owner IANGSU COLLEGE OF ENG & TECH
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