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Non taking soil drawing hole method for construction of sinking pile for prestressed pipe pile or prefabricated square pile

A technology of prestressed pipe piles and construction methods, which is applied to sheet pile walls, foundation structure engineering, buildings, etc., can solve the problems of high cost and large pile counterforce, and achieve lower project cost, lower pile sinking force, and ensure The effect of engineering quality

Inactive Publication Date: 2006-06-14
SUZHOU NG FOUND ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problem of high pile sinking reaction force and high cost, the working principle of the present invention is: use mechanical agitation to cut the soil body at the designed pile position, and at the same time, press the slurry prepared by cement and bentonite into the soil body through the slurry pump to form a A certain amount of flow-plastic slurry-soil mixture, and then press the pipe pile to the design elevation

Method used

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  • Non taking soil drawing hole method for construction of sinking pile for prestressed pipe pile or prefabricated square pile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] As can be seen from the accompanying drawings, a non-borrowing approach prestressed pipe pile or prefabricated square pile pile sinking construction method, the steps are:

[0026] A. Pile position measurement: measure and place the pile positions according to the design drawings, each pile position is driven into the ground with a bamboo stick with a length of 20 cm and a width of 1-1.5 cm, paint the top of the bamboo stick exposed to the ground, and It should be flat with the ground surface to avoid damage or displacement when people walk or the pile driver moves. For the convenience of review and measurement, certain control points should be arranged according to the axis and protected with cement mortar;

[0027] B. Lead hole construction: use SMW construction method machine or high-power deep mixing machine to carry out lead hole construction at the pile position. The depth of the pilot hole is determined according to the burial depth of the sand layer, and it is ...

Embodiment 2

[0030] As can be seen from the accompanying drawings, a non-earth-borrowing prestressed pipe pile or prefabricated square pile pile sinking construction method, the work steps are:

[0031]A. Pile position measurement: Measure and place the pile positions according to the design drawing. Each pile position is driven into the ground with a bamboo stick with a length of 20 cm and a width of 1 cm. The surface is flat to avoid damage or displacement when people walk around. For the convenience of review and measurement, the sliding axis is set as the central axis control point every 10 to 15 meters and protected with cement mortar;

[0032] B. Leading hole construction: use high-power deep mixing machinery, use P032.5 ordinary Portland hydrochloric acid cement and bentonite as the components of the slurry, during the drilling process of the drilling rig, the slurry should be kept continuous and uniform, and the cement should be based on the weight of the soil. 15-18% mixed, benton...

Embodiment 3

[0035] As can be seen from the accompanying drawings, a non-borrowing approach prestressed pipe pile or prefabricated square pile pile sinking construction method, the steps are:

[0036] A. Pile position measurement: Measure and place the pile positions according to the design drawing. Each pile position is driven into the ground with a bamboo stick with a length of 20 cm and a width of 1.5 cm. The surface is flat to avoid damage or displacement when people walk around. For the convenience of review and measurement, the central axis control point is made along the intersection of the axis and protected with cement mortar;

[0037] B. Pilot hole construction: use high-power deep mixing machinery and use P032.5 ordinary Portland hydrochloric acid cement and bentonite as the components of the slurry. During the drilling process of the drilling rig, the slurry supply should be kept continuous and uniform, and the cement should be 10% of the soil weight. ~12% mixed, bentonite with...

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Abstract

The invention discloses non borrow leading hole pre-stress pipe pile or perform square type pile sinking construction method, which can ensure engineering quality, reduce construction cost, and solve the problem of sinking pile penetrating close sand layer. Its construction main point includes the following steps: adopting machine cut and stirring; stirring sera whose main component is curing agent cement and additive and soil mass; forming sera soil mixture to prevent pressing pile counterforce; with the solidification of the cement, the soil mass intensity and friction resistance around the pile are exceeded the undisturbed soil to satisfy the pile foundation bearing capacity and design demand. The invention can apply in sinking pile of the pipe pile or perform square type pile when the place has close sand layer and the sinking pile is need to penetrate sand layer. It can reduce soil squeezing effect while sinking pile, and solve the neighborhood building sinking pile construction.

Description

technical field [0001] The invention relates to a load-bearing pile for building foundations, specifically, it is used for the shallow part of the planned site where there is a relatively thick and dense sand layer, and the design of the pile foundation selects the bearing layer below the sand layer. The invention relates to a construction method for sinking prestressed pipe piles or prefabricated square piles through non-borrowing holes to solve the difficulty of passing through dense sand layers during pile construction. Background technique [0002] With the rapid development of urban construction, the land resources available for construction are becoming less and less, so housing construction is developing towards high-rise buildings, and various high-rise and super high-rise buildings have become the current construction dominance. For the foundation engineering of high-rise and ultra-high-rise buildings, the requirements for foundation bearing capacity are getting hig...

Claims

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Application Information

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IPC IPC(8): E02D5/30E02D7/20
Inventor 施鸣升周建明沈明岗华菁
Owner SUZHOU NG FOUND ENG
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