公路边坡地震灾害预防技术研究
发布时间：2018-08-02 21:22
【摘要】：我国位于世界两大地震带——环太平洋地震带与欧亚地震带之间，地震发生频率高，往往造成崩塌、滑坡、泥石流、滚石、开裂等地质灾害，对震区公路的正常运营造成严重影响，经济损失巨大。 针对汶川地震公路边坡的破坏状况，本文在国内外相关资料调研和工程调查基础上，开展了如下工作： （1）通过对我国地震环境和地震历史状况进行调研，分析了地震造成的主要破坏特点以及西部地区公路边坡地震安全性状况。 （2）通过对汶川地震引起的周边地区边坡破坏状况及其特点的调查，，研究了余震导致的边坡破坏特征。 （3）对汶川地震后震区公路边坡稳定性及地质状况进行了调查研究，其中包括边坡所处区的地貌单元，地层结构，岩性特征，岩体风化程度，工程地质岩组，地质构造特征，边坡裂隙、节理、断层等结构面，以及边坡岩体破碎程度等，统计分析了地震引起的边坡破坏与地震参数间的关系。 （4）在工程调查与资料分析的基础上，研究了影响公路边坡稳定性的主要因素，以及公路边坡的地震破坏机理。 （5）对西部地区不同地震烈度带及地形环境公路边坡抗震设计技术、标准进行了探讨，研究了西部地区边坡抗震设计参数的选取方法，提出了公路边坡的防灾减灾对策。 （6）采用拟静力法和本文方法，分析了典型公路高边坡抗震稳定性状况，其中本文方法考虑地震力偏角的变化。根据稳定性评价结果，基于公路边坡抗震防范对策，提出了典型公路边坡具体抗震加固措施。
[Abstract]:China is located between the two major seismic zones in the world-the Pacific Rim seismic belt and the Eurasian seismic belt. The frequency of earthquakes is high, which often results in geological disasters such as collapse, landslide, debris flow, rolling stone, cracking and so on. The normal operation of highway in earthquake area is seriously affected and the economic loss is huge. In view of the damage situation of Wenchuan earthquake highway slope, this paper carries out the following work on the basis of domestic and foreign related data and engineering investigation: (1) through the investigation of earthquake environment and earthquake history in China, The main damage characteristics caused by the earthquake and the seismic safety of highway slope in the western region are analyzed. (2) through the investigation of the slope failure situation and its characteristics in the surrounding areas caused by the Wenchuan earthquake, The characteristics of slope failure caused by aftershocks are studied. (3) the stability and geological condition of highway slope in Wenchuan earthquake area are investigated, including the geomorphological unit, stratigraphic structure and lithologic characteristics of the slope. Weathering degree of rock mass, engineering geological rock formation, geological structure characteristics, slope fissures, joints, faults and other structural planes, as well as the degree of rock mass fragmentation, etc. The relationship between earthquake induced slope failure and seismic parameters is analyzed statistically. (4) on the basis of engineering investigation and data analysis, the main factors affecting the stability of highway slope are studied. And the seismic failure mechanism of highway slope. (5) the seismic design technology of highway slope in different seismic intensity zones and topographic environment in western China is discussed, and the selection method of seismic design parameters for slope in western region is studied. The countermeasures for disaster prevention and mitigation of highway slope are put forward. (6) the seismic stability of typical highway high slope is analyzed by using pseudo-static method and this method, in which the variation of seismic force deflection angle is considered in this method. According to the results of stability evaluation, based on the anti-seismic countermeasures of highway slope, the concrete anti-seismic reinforcement measures of typical highway slope are put forward.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U416.14;P315.9
本文编号：2160768
[Abstract]:China is located between the two major seismic zones in the world-the Pacific Rim seismic belt and the Eurasian seismic belt. The frequency of earthquakes is high, which often results in geological disasters such as collapse, landslide, debris flow, rolling stone, cracking and so on. The normal operation of highway in earthquake area is seriously affected and the economic loss is huge. In view of the damage situation of Wenchuan earthquake highway slope, this paper carries out the following work on the basis of domestic and foreign related data and engineering investigation: (1) through the investigation of earthquake environment and earthquake history in China, The main damage characteristics caused by the earthquake and the seismic safety of highway slope in the western region are analyzed. (2) through the investigation of the slope failure situation and its characteristics in the surrounding areas caused by the Wenchuan earthquake, The characteristics of slope failure caused by aftershocks are studied. (3) the stability and geological condition of highway slope in Wenchuan earthquake area are investigated, including the geomorphological unit, stratigraphic structure and lithologic characteristics of the slope. Weathering degree of rock mass, engineering geological rock formation, geological structure characteristics, slope fissures, joints, faults and other structural planes, as well as the degree of rock mass fragmentation, etc. The relationship between earthquake induced slope failure and seismic parameters is analyzed statistically. (4) on the basis of engineering investigation and data analysis, the main factors affecting the stability of highway slope are studied. And the seismic failure mechanism of highway slope. (5) the seismic design technology of highway slope in different seismic intensity zones and topographic environment in western China is discussed, and the selection method of seismic design parameters for slope in western region is studied. The countermeasures for disaster prevention and mitigation of highway slope are put forward. (6) the seismic stability of typical highway high slope is analyzed by using pseudo-static method and this method, in which the variation of seismic force deflection angle is considered in this method. According to the results of stability evaluation, based on the anti-seismic countermeasures of highway slope, the concrete anti-seismic reinforcement measures of typical highway slope are put forward.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U416.14;P315.9
【参考文献】
相关期刊论文 前1条
1 赵学勐,陈运理;考虑垂直裂隙影响的均质黄土挖方边坡稳定性分析[J];土木工程学报;1981年01期
本文编号：2160768
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