American Society of Civil Engineers


Cumulative Effects of Soil Nailing under Cyclic Load Considering Bottom Boundary Conditions of Facing


by Fangcai Zhu, (Institute of Geotechnical Engineering, Hunan University of Technology, Zhuzhou 412008, China), Xingui Liao, (Second Construction Company, Zhongtian Construction Group CO. LTD, Hangzhou 310008, China), Jianhua Li, (Institute of Geotechnical Engineering, Hunan University of Technology, Zhuzhou 412008, China), and Yue Yang, (Institute of Geotechnical Engineering, Hunan University of Technology, Zhuzhou 412008, China)
Section: Dynamic Soil-Structure Interactions: Part I, pp. 77-84, (doi:  http://dx.doi.org/10.1061/41102(375)8)

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Document type: Conference Proceeding Paper
Part of: Soil Dynamics and Earthquake Engineering
Abstract: Based on laboratory study, cumulative effect of soil nailing under cyclic load is studied. The cyclic load is produced by a multi-channel load system, from experimental results, displacement of facing increases considerably after a certain load number, then keep almost constant, which indicates attenuation of accumulation effect. Thereafter, in order to compare with laboratory results, through ADINA system, based on Mohr-Coulomb criteria, a plain strain finite element model(FEM) is built. From both experimental and calculation results, considering different stiffness and boundary constraints at the bottom of facing, displament of facing is smaller with concrete facing(greater stiffness), which is than with wood facing(smaller stiffness), similarly, displacement of facing is smaller with fixed bottom than with free one, moreover, load frequency has pronounced influence on displacement of facing.


ASCE Subject Headings:
Soil nailing
Cyclic loads
Foundations
Pumps