考虑土拱效应的非垂直挡墙地震主动土压力

doi:SEISMIC ACTIVE EARTH PRESSURE FOR NON-VERTICAL RIGID RETAINING WALL CONSIDERING SOIL ARCHING EFFECT

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摘要由土拱效应原理得到滑裂土体的墙面和滑裂面上的应力，然后根据拟静力法和滑裂土体的整体受力平衡，得到了平移模式下非垂直刚性挡土墙的地震主动破裂角计算式。进一步根据水平层分法获得了墙背地震主动土压力及其系数、地震主动土压力合力及其作用点高度等的计算式。还分别讨论了墙背倾角、填土内摩擦角、墙土摩擦角、地震系数和填土表面荷载等对地震主动破裂角、法向地震主动土压力分析、地震主动土压力合力系数、地震主动土压力合力及其作用点相对高度等的影响。

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关键词 ：土拱效应, 拟静力法, 地震主动土压力, 地震主动压力系数, 地震主动破裂角, 摩尔应力圆, 墙背倾角

Abstract：According to soil arching effect，stresses on the wall and sliding plane of the sliding backfill mass at arbitrary depth is obtained. And the pseudo-static method and total force equilibrium，a new formula of the seismic active failure angle behind non-vertical rigid retaining wall is obtained under translation mode. Then according to differential level layer method，by force and moment equilibrium，new formulae of the seismic active earth pressure against non-vertical rigid retaining wall and its coefficient are putted forward under translation mode. And those of the seismic active earth force，its coefficient and the application height are also derived. The distribution of seismic active earth pressure by proposed formula is non-linear along the height of wall. In addition，The influences of on the wall-back inclination，internal friction angle of backfill，wall-soil friction angle，seismic coefficient and load against the backfill surface on the seismic failure angle，seismic active earth pressure and its coefficient，seismic active earth force and height of its application are investigated.

Key words： soil arching effect pseudo-static method seismic active earth pressure coefficient of seismic active earth pressure seismic active failure angle Mohr&rsquo s stress circle wall-back inclination

引用本文:

周亦涛1，2，陈福全1. 考虑土拱效应的非垂直挡墙地震主动土压力[J]. 岩石力学与工程学报, 2015, 34(07): 17-17.
ZHOU Yitao1，2，CHEN Fuquan1. SEISMIC ACTIVE EARTH PRESSURE FOR NON-VERTICAL RIGID RETAINING WALL CONSIDERING SOIL ARCHING EFFECT. , 2015, 34(07): 17-17.

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http://www.rockmech.org/CN/SEISMIC ACTIVE EARTH PRESSURE FOR NON-VERTICAL RIGID RETAINING WALL CONSIDERING SOIL ARCHING EFFECT 或 http://www.rockmech.org/CN/Y2015/V34/I07/17

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