ANALYSIS OF THE VACUUM PRESSURE IMPROVEMENT EFFECT ON DEEP SOFT CLAY FOUNDATION COVERED BY UNCONSOLIDATED HYDRAULIC FILL OF SILTY SAND

Tang Tongzhi  Wang Haipeng  Sun Guofeng  Chai Benben  Shen Weibin

doi:10.13204/j.gyjz201510021

Volume 45 Issue 10

Dec. 2015

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Article Navigation > INDUSTRIAL CONSTRUCTION > 2015 > 45(10): 111-115

RONG Hua, JING Yuxiang, WANG Yulin, GENG Yan. Effects of Elevated Temperature and Irradiation on Performance Degradation of Concrete Structures[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(11): 133-138. doi: 10.13204/j.gyjzG22062009

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Tang Tongzhi Wang Haipeng Sun Guofeng Chai Benben Shen Weibin, . ANALYSIS OF THE VACUUM PRESSURE IMPROVEMENT EFFECT ON DEEP SOFT CLAY FOUNDATION COVERED BY UNCONSOLIDATED HYDRAULIC FILL OF SILTY SAND[J]. INDUSTRIAL CONSTRUCTION, 2015, 45(10): 111-115. doi: 10.13204/j.gyjz201510021

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ANALYSIS OF THE VACUUM PRESSURE IMPROVEMENT EFFECT ON DEEP SOFT CLAY FOUNDATION COVERED BY UNCONSOLIDATED HYDRAULIC FILL OF SILTY SAND

doi: 10.13204/j.gyjz201510021

Tang Tongzhi Wang Haipeng Sun Guofeng Chai Benben Shen Weibin,

Publish Date: 2015-10-20

Abstract

Abstract

It was analyzed the law of the transmission and attenuation of vacuum pressure，the growth and dissipation of excess pore pressure，ground surface settlement，and the deformation characteristic and rules of layered settlement in the deep soft soil foundation covered by unconsolidated hydraulic fill of fine silty sand，and also studied the effects on consolidation deformation of the soft soil foundation covered by unconsolidated hydraulic fill of fine silt layer． Unconsolidated hydraulic fill of fine silty sand was conducive to the pore pressure dissipation and the drainage of underlying deep soft foundation． The foundation settlement was fast with fluctuation in the early stage，convergence and stability in the middle and later stage． When vacuum pressure under membrane transferred on the surface，its difference and fluctuation were large，when it passed to the deep foundation，its hysteresis and attenuation range was large． The compression of unconsolidated hydraulic fill of silty sand was large，and most of the vacuum energy was absorbed． The characteristic was not conducive to the compression deformation of underlying deep soft foundation． After treatment，the reinforcing effect of the unconsolidated hydraulic fill of silty sand was better than the underlying deep soft foundation．
- hydraulic fill,
- unconsolidated,
- soft clay,
- vacuum preloading,
- reinforcement

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沈阳化工大学材料科学与工程学院沈阳 110142

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