文献类型：期刊文献

中文题名：地震作用下临水加筋挡墙的加筋条拉力系数计算

英文题名：Calculation of reinforcement tension coefficient of waterfront reinforced wall under seismic actions

作者：黄睿[1,2]

机构：[1]绍兴文理学院土木工程学院;[2]绍兴文理学院岩石力学与地质灾害实验中心

年份：2018

卷号：37

期号：A01

起止页码：3666

中文期刊名：岩石力学与工程学报

外文期刊名：Chinese Journal of Rock Mechanics and Engineering

收录：CSTPCD、、EI(收录号：20191006593242)、北大核心2017、Scopus、CSCD2017_2018、北大核心、CSCD

基金：国家自然科学基金青年基金资助项目(51708354)~~

语种：中文

中文关键词：土力学;地震;加筋土;稳定性;临水

外文关键词：soil mechanical;earthquake;reinforced-soil;stability;waterfront

中文摘要：为了完善支挡结构的抗震稳定性计算方法,基于拟静力法和水平层分析法,以部分浸水条件下的临水加筋土挡墙为研究对象,考虑填土中存在直线型和折线型2种滑裂面形式,推导地震作用下加筋条拉力系数的计算表达式。该法根据填土的渗透性差异分为水土分算和水土合算2种情况,包含了水平地震惯性力、竖向地震惯性力、地震超静孔压以及动水压力的影响。相比于干填土情况,浸水条件会显著增大加筋土挡墙的加筋条拉力,在工程设计中需要合理考虑其影响。参数分析表明,直线型滑裂面的加筋条拉力系数大于折线型滑裂面的结果;水土分算的系数大于水土合算的系数;地震超静孔压和浸水水位高度对加筋条拉力系数有显著的增大作用,其增大幅度与滑裂面的形式和水土压力的计算模式有关;填土内摩擦角和墙土外摩擦角对拉力系数都有减小作用,但内摩擦角的影响幅度更明显。

外文摘要：In order to improve the seismic stability calculation method of retaining structure,a formula of the reinforcement tension coefficient under seismic actions is established,which is based on pseudo-static method and horizontal slice analysis. The derivation aims at the waterfront reinforced-soil wall under partial submerged conditions. And two types of failure surfaces in the forms of linear and polyline in the backfill are considered. Besides,according to the difference of permeability,soil and water pressure together or separately are calculated by this method respectively. The effects of horizontal seismic inertia force,vertical seismic inertia force,seismic excess pore pressure and hydrodynamic pressure are taken into accounted. Compared with the dry backfill condition,reinforcement tension required in the submerged condition will be greater significantly,which should be paid reasonable considerations in engineering design. The parametric studies demonstrate that the reinforcement tension coefficient of linear failure surface is higher than that of polyline failure surface. The coefficient calculated by soil and water separately is larger than that obtained by soil and water together. Seismic excess pore pressure and water level have a significantly increasing effect on tension coefficient. And the increasing amplitude is related to the forms of failure surfaces and the calculation mode of soil and water pressure. Both soil friction angle and wall friction angle have a decreasing influence on tension coefficient,but the influence of soil friction angle is more obvious.