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均布荷载作用下挡土墙后粘性填土的土压力计算
引用本文:年廷凯,栾茂田.均布荷载作用下挡土墙后粘性填土的土压力计算[J].岩土力学,2002,23(1):17-22.
作者姓名:年廷凯  栾茂田
作者单位:大连理工大学土木工程系及海岸和近海工程国家重点实验室,辽宁,大连,116024
基金项目:国家教育部跨世纪优秀人才培养计划研究基金资助项目
摘    要:基于极限分析下限定理,导出了均布荷载作用下倾斜坡面挡土墙后粘性填土的侧向土压力的解析解,并通过具体数值计算以图表的形式给出了填土摩擦角φ、无量纲粘结力c/γz、无量纲荷载强度q/γz及填土表面倾角α等参数不同组合情况下的综合主动和被动土压力系数值,可供工程实践直接采用。在此基础上,就各参数对综合主动和被动土压力系数的影响进行了有意义的探讨。

关 键 词:均布荷载  挡土墙  粘性填土  土压力  计算  极限分析
文章编号:1000-7598-(2002)01-0017-06
收稿时间:2001-02-12
修稿时间:2001年2月12日

Earth pressure computations of cohesive backfill with inclined surface under surcharge by limit analysis
NIAN Ting -kai,LUAN Mao-tian.Earth pressure computations of cohesive backfill with inclined surface under surcharge by limit analysis[J].Rock and Soil Mechanics,2002,23(1):17-22.
Authors:NIAN Ting -kai  LUAN Mao-tian
Institution:Department of Civil Engineering and State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,Dalian116024,China
Abstract:Rankine's theory of earth pressure can not be directly employed to the case of cohesive backfill with an inclined surface.For this practical case,it seems that no analytical solution is available.In this paper,a theoretical solution of active and passive earth pressures of cohesive backfill with an inclined surface under surcharge was developed on the basis of the lower-bound theorem of limit analysis.First,a statically-balanced stress field of the slope ground consisting of cohesive soils was constructed from elasticity theory.Then it was enforced to not violate the Mohr-Coulomb yield condition.According to the lower-bound theorem of limit analysis,two extreme values of lateral stress which respectively correspond to active and passive earth pressures were to be found and expressed in the superposition form.Based on a number of numerical computations conducted for different combinations of the key parameters related to the problem,the computed results useful for engineering practice were given in tabular and graphical forms.The effects of the main parameters on comprehensive coefficients of active and passive earth pressure were discussed.
Keywords:earth pressure  limit equilibrium  limit analysis  lower-bound theorem  cohesive soil  
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