边坡主动减压超前支护结构抗震性能  

Seismic Performance of the Active Decompression Pre-reinforcement Structure of Slope

作　　者：滕云龙 刘元雪[2,3] 董英辉[1] 李鹏举 Teng Yun-long;Liu Yuan-xue;Dong Ying-hui;Li Peng-ju(Architectural Design Institute of Shenyang Military Region,Shenyang 110000,China;Dept. of Civil Engineering;Chongqing Key Laboratory of Geomechanics & Geoenvironmental Protection,LEU,Chongqing 401311,China;Unit 91531,Sanya Hainan 572000,China)

机构地区：[1]沈阳军区建筑设计院 [2]后勤工程学院军事土木工程系 [3]后勤工程学院岩土力学与地质环境保护重庆市重点实验室 [4]91531部队

出　　处：《后勤工程学院学报》2016年第4期28-32,共5页Journal of Logistical Engineering University

摘　　要：主动减压超前支护结构是一种基于岩土体自身强度发挥的新型边坡支护结构。为降低边坡在地震过程中的破坏程度,运用FLAC3D软件,采用动力时程法对主动减压超前支护结构进行数值模拟分析,考察在地震作用下,随着减震层厚度变化桩身位移、剪力、弯矩的变化规律。结果表明:当减震层厚度超过15 cm,随着减震层厚度的增大,桩身震后最大位移、最大剪力、最大弯矩以及震中峰值位移、峰值剪力、峰值弯矩均减小。建议在考虑抗震作用时,主动减压超前支护的减震层厚度应大于15 cm。Active decompression pre?reinforcement structure is a new type of slope supporting structure based on rock andsoil and its own strength. For reducing the damage of the slope during an earthquake, in this paper, based on FLAC3D, a numericalsimulation of the active decompression pre?reinforcement structure was conducted through dynamic process method. We studied thevariation of displacement, shear and moment of the pile as the thickness of the damping layer changing in earthquakes. The resultsshow that when the thickness of damping layer exceeds 15 cm, the maximum displacement, the maximum shear, the largest momentafter the earthquake and the peak displacement, peak shear and peak moments during the earthquake are reduced as the thicknessof damping layer increases. The thickness of damping layer should be greater than 15 cm, considering the earthquake resistance ef?fects of the active decompression pre?reinforcement.

关 键 词：边坡 地震响应 主动减压 位移 剪力 弯矩 

分 类 号：TU399[建筑科学—结构工程]