首页|Influence of the penetration of adjacent X-section cast-in-place concrete(XCC)pile on the existing XCC pile in sand

Influence of the penetration of adjacent X-section cast-in-place concrete(XCC)pile on the existing XCC pile in sand

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A series of small-scale 1g X-section cast-in-place concrete(XCC)pile-penetration model tests were conducted to study the effects of soil density and pile geometry on the lateral responses of an existing pile and the variations in surrounding soil stress.The results showed that the bending patterns of existing XCC piles varied with penetration depth.The lateral response of the existing pile was sensitive to the change in relative density and pile geometry.For example,the bending moment of the existing pile increased along with these parameters.The development of the radial stress σ'r/σ'v0 of the soil around an existing pile showed different trends at various depths during the penetration of the adjacent pile.Moreover,the change in radial stress during the penetration of the XCC pile did not exhibit the"h/R effect"that was observed in the free-field soil,due to the shielding effect of the existing piles.The peak value of radial stress σ'r_max/σ'v0 decreased exponentially as the radial distance r/R increased.The attenuation of σ'r_max/σ'v0 with r/R in the loose sand was faster than in the medium-dense or dense sands.The σ'r_max/σ'v0 at the same soil location increased with the cross-section geometry parameter.

X-section cast-in-place concrete(XCC)pileTestPenetrationSandLateral responseRadial stress

Peng ZHOU、Jianhui XU、Changjie XU、Guangwei CAO、Jie CUI、Xuanming DING

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School of Civil Engineering and Architecture,State Key Laboratory of Performance Monitoring and Protecting of Rail Transit Infrastructure,East China Jiaotong University,Nanchang 330013,China

Guangdong Key Laboratory of Earthquake Engineering and Application Technology,Earthquake Engineering Research&Test Center,Guangzhou University,Guangzhou 510006,China

Key Laboratory of New Technology for the Construction of Cities in Mountain Areas,College of Civil Engineering,Chongqing University,Chongqing 400045,China

Zijin School of Geology and Mining,Fuzhou University,Fuzhou 350116,China

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National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaJiangxi Provincial Natural Science Foundation of ChinaOpen Research Fund Program of Guangdong Key Laboratory of Earthquake Engineering and Application Technologyscience&Technology Project of the Education Department of Jiangxi Province,China

52308352522380095210832120232BAB2140822020B1212060071GJJ2200681

2024

10.1631/jzus.A2300384

浙江大学学报(英文版)(A辑:应用物理和工程)
浙江大学

浙江大学学报(英文版)(A辑:应用物理和工程)

CSTPCD
影响因子：0.556
ISSN：1673-565X
年,卷(期)：2024.25(7)
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