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Method for construction of vibro-compacted crushed-stone pile in silty soil

A technology of vibrating and crushing gravel and construction method, applied in sheet pile wall, foundation structure engineering, construction, etc., can solve the problems of poor stress effect, slow construction speed, uneven vibration of internal gravel, and achieve fast progress. , The effect of fast construction and easy operation standardization

Inactive Publication Date: 2018-10-12
JINAN URBAN CONSTR GRP
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

The disadvantages are that the construction speed is slow, the internal crushed stones are not vibrated uniformly, and the force effect is poor.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The construction method of vibrating crushed stone compaction pile in silt soil geology of the present invention comprises the following steps: 1. forming holes; Two and three cycle in turn.

[0023] 1. Construction preparation

[0024] (1) Clean up and level the site, compact backfill plain soil, and eliminate high-altitude and ground obstacles.

[0025] (2) Measure and set out the line, restore the center line, release the sideline piles of the road section, clean and level the foundation surface of the construction section, measure the elevation after leveling, and do a good job in the drainage system to ensure the smooth flow of drainage channels.

[0026] (3) Draw the construction plan of gravel piles according to the pile spacing and form in the design document, accurately release and number the pile locations according to the pile location diagram, and the allowable difference of pile spacing is ±15mm;

[0027] (4) Preparation of technical requirements: During ...

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Abstract

A method for the construction of a vibro-compacted crushed-stone pile in silty soil is characterized by comprising the following steps: first, forming a hole, filling a tubular pile with crushed stone, filling the crushed stone while pulling a tube and carrying out vibration, and sequentially and cyclically carrying out operation in this way. The method has the beneficial effects that the method is simple in construction technology, rapid in progress, low in cost, simple and efficient, and the construction quality is ensured; 2, normalized, programmed and standardized operation is facilitated,and the method is easily grasped by operators and managers; and 3, the strength and the whole stability of a foundation are ensured, and the great effects of rapid construction, energy saving and high efficiency are realized.

Description

(1) Technical field [0001] The invention relates to a construction method of a vibrating crushed stone compaction pile in silty ground. (2) Background technology [0002] The gravel compaction pile is through the compaction and vibration of the surrounding silt and sand layers during the pile forming process, and the reinforcement effect is obtained by pressing in the gravel, so that the soil particles around the pile are rearranged and compacted, and the void ratio is reduced. Smaller, the density increases. At the same time, the formed gravel compaction pile reinforcement itself is a good drainage channel. Its existence is not only conducive to the dissipation of excess pore water pressure in sandy soil and silt soil layers, but also effectively enhances the liquefaction resistance of the soil. Moreover, under the action of load, the reinforced body of the crushed stone compaction pile bears the load together with the sandy soil and silt layer, that is, the composite soil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/46E02D7/26
CPCE02D5/46E02D7/26
Inventor 刘哲赵利张开澈李宁秦伟熊伟王付桂
Owner JINAN URBAN CONSTR GRP
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