工程地质学报2016，Vol.24Issue(5)：1022-1027,6.DOI:10.13544/j.cnki.jeg.2016.05.034
土坡悬臂式抗滑桩一种抗震设计计算方法
A SEISMIC DESIGN METHOD FOR CANTILEVER-TYPE STABILIZING PILES IN SOIL SLOPE
摘要
Abstract
Permanent displacement and plastic zone in the stable strata of a soil slope occur generally in the slope reinforced by stabilizing piles under the condition of intensive seismic action.However,the two important factors are usually omitted in the traditional aseismic design and analysis for slopes with cantilever-type stabilizing piles.Based on the principle of the rigid Newmark sliding model and limit analysis,the computational method is proposed that engineered landslide thrust on a stabilizing pile can be determined,by taking into consideration design safety factor and permanent displacement of the slope with piles.Meanwhile,according to the condition that some area in the stable strata of the slope is in the plastic state,the section of a stabilizing pile in the stable strata can be further divided into the segment in plastic zone of the strata and the segment in elastic zone of the strata.Therefore,the former can be regarded as cantilever beam model with uniformly lateral limit ground reaction;the latter can be analyzed by use of elastic foundation beam model.Their continuous conditions including internal forces and deformation of a pile and lateral ground reaction should be met at the interface between the two segments.The proposed method is demonstrated by a soil slope engineering example,in which calculation procedure and corresponding results are given in detail by the three section analysis method for the aseismic design of a cantilever-type stabilizing pile.The results show further that the proposed method is reasonable and cost effective.关键词
土质边坡/抗滑桩/抗震设计/永久位移/塑性区锚固段Key words
Soil slope/Stabilizing pile/Aseismic design/Permanent displacement/Plastic zone in the stable strata of a slope分类
建筑与水利引用本文复制引用
肖世国,祝光岑..土坡悬臂式抗滑桩一种抗震设计计算方法[J].工程地质学报,2016,24(5):1022-1027,6.基金项目
国家自然科学基金项目（51278430），新世纪优秀人才支持计划（NCET-13-0976）资助． （）
