No-dumping vibrationless pore-forming compaction processing method for mollisol foundations

A treatment method and soft soil technology, applied in soil protection, foundation structure engineering, sheet pile walls, etc., can solve problems such as no longer applicable, and achieve the effects of increased bearing capacity, high construction efficiency, and elimination of collapsibility

Inactive Publication Date: 2013-04-03
NORTHWEST RES INST CO LTD OF C R E C +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, in construction sites with strict vibration control requirements, the existing treatment methods with relatively large vibrations such as impact hammers, vibratory pile drivers, and diesel hammer pile drivers are subject to certain restrictions or are no longer applicable.

Method used

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  • No-dumping vibrationless pore-forming compaction processing method for mollisol foundations
  • No-dumping vibrationless pore-forming compaction processing method for mollisol foundations
  • No-dumping vibrationless pore-forming compaction processing method for mollisol foundations

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Embodiment Construction

[0026] The structure of the self-propelled non-discharge and non-vibration compacting device of the present invention and the non-discharge and non-vibration compaction treatment method for soft soil foundations will be described in detail below through specific embodiments.

[0027] 1. Self-propelled non-drainage and non-vibration compacting device

[0028] The self-propelled non-drainage and non-vibration compaction device involved in the present invention includes a conical frame 1 and a hydraulic cylinder 2 connected to the conical frame 1 through a flange 9, and a casing 8 is arranged outside the hydraulic cylinder 2. The top of the hydraulic cylinder 2 is provided with a suspension ring 10 . A power cone 3 is arranged in the conical frame 1 (according to the construction site, two power cones can be stacked in the same direction in turn), and the power cone 3 and the piston rod of the hydraulic cylinder 2 are integrally connected by thread or welded; The outer circumfer...

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Abstract

The invention provides a self-propelled no-dumping vibrationless pore-forming compaction processing method for mollisol foundations, which comprises the following steps: determining arrangement method, diameters and intervals of pile pores and processing depth for compaction processing in the processing range of the mollisol foundations; performing pretreatment on the dead centers of all pile pore locations to form guide pores; and then adopting the self-propelled no-dumping vibrationless pore-forming compaction device to perform continuous transverse diameter reducing and vertical squeezing on the guide pores to enable the surrounding soil bodies to be continuously compacted to form compaction pores with designed pore diameter and pore depth. According to the invention, the method for processing the mollisol foundations is simple, vibration is avoided, the efficiency is high, and the quality is good; and the adopted self-propelled no-dumping vibrationless pore-forming compaction device is simple in structure, small in size, light and flexible, and is particularly suitable for pore-forming compaction processing for mollisol foundations such as loess, filling and the like in a construction field which has small space, is narrow and strictly controls the vibration.

Description

technical field [0001] The invention belongs to the technical field of foundation reinforcement treatment, and relates to a compaction reinforcement treatment method for soft soil foundations, in particular to a non-drainage method for soft soil foundations in small spaces, narrow areas, and construction sites where vibration is strictly controlled, such as loess and filling soil. Soil non-vibration compaction treatment method. Background technique [0002] Soft soils such as loess and fill soil have disadvantages such as high compressibility, low strength, and easy to cause collapsibility and deformation after soaking in water. Therefore, the soft soil foundation must be treated before construction. With the rapid development of my country's social economy, the construction level of railways, highways, and housing has been continuously improved, and the requirements for post-construction settlement control are more stringent, especially in small spaces, narrow, and soft soi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D3/08E02D5/36
Inventor 米维军熊治文郑静贾鋆孔德刚马周全武小鹏屈耀辉魏永梁
Owner NORTHWEST RES INST CO LTD OF C R E C
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