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中国四川省汶川县2008年5月12日所发生的里氏8.0级强烈地震,具有烈度大、持续时间长的特点,由于发生在山区,地震对山区公路边坡产生了严重的破坏作用,尤其是对路堑边坡的重力式挡墙产生了不同类别的损坏,根据对本次地震极重灾区国道G213都江堰-映秀段路堑边坡重力式挡墙损坏状况的震后全面调查,整理归纳了路堑边坡重力式挡土墙的不同震害特征,主要可以分为墙体开裂、墙体局部破坏、墙体部分节段外倾、墙体部分节段滑移、落石砸坏挡墙这5种破坏类别,统计归纳了墙体震害与墙高、墙体材料、墙体所在位置线路走向与发震断层走向之间的关系等重要因素之间的规律性特征,本文结果可为山区公路工程的抗震设计研究提供基础参考。
Wenchuan County, Sichuan Province, China May 12, 2008 occurred on the Richter magnitude 8.0 strong earthquake, with a large intensity, long duration characteristics, due to occur in the mountains, the earthquake on the mountain highway slope had a serious devastating effect, in particular Is a kind of gravity retaining wall of the cutting slope has been damaged in different categories. Based on a comprehensive survey of the damaged condition of the gravity retaining wall of the cutting slope in Dujiangyan-Yingxiu section G213 of the heavily stricken area of this earthquake, The different damage characteristics of the slope gravity retaining wall mainly include the cracking of the wall body, the partial destruction of the wall body, the outward camber of the wall part, the partial slippage of the wall body, and the falling rock breaking wall The classification of damage and statistics summed up the regularity characteristics between the important factors such as the wall damage and wall height, wall material, the relationship between the wall position and the direction of the seismogenic fault. The result of this paper can be mountain road project Seismic Design Research provides the basis for reference.