Method for processing foundation through one-time pipe insertion and multi-time vacuum well point precipitation dynamic consolidation

A technology for foundation treatment and well point dewatering, applied in soil protection, infrastructure engineering, construction, etc., can solve the problems of prolonging the construction period, duplicating labor, and increasing the time interval of compaction, so as to improve the compactness and suppress the water level The rebound effect

Inactive Publication Date: 2009-12-02
上海现代建筑设计(集团)有限公司 +3
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Problems solved by technology

However, there is a problem of large engineering volume in "multi-pass precipitation and multi-pass compaction", which causes a...

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  • Method for processing foundation through one-time pipe insertion and multi-time vacuum well point precipitation dynamic consolidation
  • Method for processing foundation through one-time pipe insertion and multi-time vacuum well point precipitation dynamic consolidation
  • Method for processing foundation through one-time pipe insertion and multi-time vacuum well point precipitation dynamic consolidation

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Embodiment Construction

[0028] The present invention will be further described below in conjunction with the embodiments shown in the accompanying drawings.

[0029] The process of the present invention combines the respective advantages of dynamic compaction, one-time intubation, and multiple vacuum well point dewatering, and utilizes one-time intubation and multiple vacuum well point dewatering to reduce the water level, accelerate soil consolidation and pore water pressure dissipation, and give full play to The advantages and effects of dynamic compaction treatment, the surface layer forms a "hard shell" with a certain thickness and strength, which has the advantage of more coordinated uneven settlement deformation.

[0030] Figure 2 ~ Figure 3 It is a relative schematic diagram of two different vacuum well point water pipes and dynamic compaction points of the present invention. In the specific implementation, according to the layout spacing and method of vacuum well point water pipes, differen...

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Abstract

The invention relates to a method for processing a foundation through one-time pipe insertion and multi-time vacuum well point precipitation dynamic consolidation, which comprises the following steps: adopting a process combining a heavy-tamping method with suitable energy level and one-time pipe insertion and multi-time vacuum well point precipitation to accelerate the dissipation of excess pore water pressure caused by over-high water level and heavy-tamping constructions; forming a 'hard shell layer' with certain thickness through a surface layer to increase the diffusion effect of subsidiary stress so as to form a double-layer foundation; and reducing the differential settlement under the action of loads through the regulating action of the 'hard shell layer' so that the deformations of the entire field are harmonious and play a combined action to satisfy dual requirements on the foundation bearing capacity and the deformation. By combining the advantages that low-energy-level heavy-tamping greatly improves the surface layer bearing capacity and the vacuum well point precipitation accelerates the dissipation of the excess pore water pressure of the field, the invention provides the method for processing the foundation through the one-time pipe insertion and the multi-time vacuum well point precipitation dynamic consolidation, and the method has the advantages of manufacturing cost saving, quick construction, mature construction experience, simple process and remarkable effect.

Description

technical field [0001] The invention relates to a foundation treatment method, which is applied to the foundation treatment of cargo container yards, airports, port terminals, warehouses and other projects with small loads and large load action areas. Specifically, it is a method for solving the problem of insufficient surface bearing capacity. , A new method for the problem of thicker muddy soil in deep depths and large differential deformation under uniform loads over a large area. Background technique [0002] At present, the commonly used foundation treatment methods include surcharge preloading method, vacuum preloading method, excavation and replacement method, etc. High vacuum compaction method, dynamic compaction replacement method, cement-soil mixing pile method, vibratory impact method, grouting method, chemical mixing method, CFG pile method, compacted sandstone pile method, rigid pile, flexible pile, and rigid-flexible composite Pile foundation method, settlemen...

Claims

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Application Information

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IPC IPC(8): E02D3/10E02D3/046
Inventor 张文龙朱子仁赵志杰水伟厚詹金林梁志荣
Owner 上海现代建筑设计(集团)有限公司
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