Method for treating interaction foundation of soft clay layer and liquefied soil layer through pneumatic vibration rod compaction method
A technology for clay layer and treatment site, which is applied in the field of the interaction between soft clay layer and liquefied soil layer by pneumatic vibrating rod compaction method, which can solve the problems of low permeability hindering pore water and the effect of drainage, so as to promote the dissipation of excess static pore pressure. , Elimination of liquefaction, the effect of significant economic benefits
Pending Publication Date: 2021-07-27
SOUTHEAST UNIV
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However, for the interactive foundation of soft clay layer and liquefied soil layer, the low permeability of soft clay will hinder the disc
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[0030] The present invention is described in further detail now in conjunction with accompanying drawing. In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "left side", "right side", "upper", "lower" are based on the orientations or positional relationships shown in the drawings, and are only For the purpose of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, "first", "second" and the like do not represent components importance, and therefore should not be construed as limiting the invention. The specific dimensions used in this embodiment are only for illustrating the technical solution, and do not limit the protection scope of the present invention.
[0031] As stated in the background technology, the tech...
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The invention relates to a method for treating an interaction foundation of a soft clay layer and a liquefied soil layer through a pneumatic vibrating rod compaction method. The method comprises the following seven steps of determining the depths of the liquefied soil layer and the soft clay layer in a site according to survey data; leveling the field, positioning a vibration point, and arranging a plastic drainage plate; positioning a pile machine; performing resonance sinking; performing high-pressure air injection; performing vibration hole vibration reservation; and performing vibration rod lifting. According to the method, the vibration hammer-vibration rod-foundation soil system is in a resonance state by adjusting the frequency of vibration hammers, so that effective transmission of vibration energy to soil bodes around vibration rods is achieved, vibration compaction of the liquefiable soil layer is achieved, and the liquefying property of the liquefiable soil layer is eliminated; and meanwhile, when the vibration rods sink to the soft clay layer, high-pressure air injection can promote dissipation of ultra-static pore pressure in soil caused by vibration loads, the drainage consolidation process of the liquefied soil layer and the soft clay layer can be accelerated in cooperation with plastic drainage plates, and the method is an economical, environmentally friendly and efficient method for treating the interaction foundation of the soft clay layer and the liquefied soil layer.
Description
technical field [0001] The invention relates to a method for treating an interactive foundation of a soft clay layer and a liquefied soil layer by a pneumatic vibrating rod compaction method, and belongs to the technical field of foundation treatment methods. Background technique [0002] In the eastern coastal area of Jiangsu Province, my country, affected by geological forces, the ground has subsided since the late Pleistocene, accepted transgression, and then increased and decreased several times, resulting in the interaction of marine and continental sedimentary layers, and the lithology is reflected as silt and silt. Muddy clay interbedded with silty soil, forming a special foundation where liquefied soil and soft clay interact. Among them, the saturated silt is in a loose state, with a low standard penetration number and poor engineering geological properties. It is easy to liquefy under the action of dynamic load (earthquake) and endanger the normal use and safety of...
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Login to View More IPC IPC(8): E02D5/46E02D3/08E02D3/10E02D3/00E02D11/00E02D7/18
CPCE02D5/46E02D3/08E02D3/10E02D3/00E02D11/00E02D7/18
Inventor 庄仲旬杜广印刘松玉杨泳高常辉
Owner SOUTHEAST UNIV