高山峡谷地区坝陵河大桥西岸边坡稳定性及工程效应
|
摘要
坝陵河大桥地处高山峡谷地区,西岸是坡高300 m的顺向坡,为了保证大桥顺利施工和长期运行,准确评价西岸边坡在降雨、大桥荷载、地震作用下的稳定性显得尤为重要。首先对西岸边坡的结构类型、结构面与坡面的组合、岩体风化及物理力学性质等特征进行了研究;然后在边坡岩体质量分级基础上,进行了降雨条件下自然边坡稳定性研究;最后利用FLAC 3D数值模拟软件,对自然边坡在自重、大桥荷载和地震作用下的工程效应进行了分析。工程效应研究结果表明,桥位具备建桥条件。
Baling River bridge is located in the alpine gorge area.Its west bank is a dip slope with 300 m height.In order to ensure the bridge construction and operation,it is important to analyze the slope stability under the condition of rain,bridge load and earthquake.Firstly,characteristics of the west bank slope were studied such as the structure type,the combination of structural plane and slope surface,the weathering of rock mass and the physical and mechanical properties.Secondly,based on the slope rock mass quality classification,the slope stability was analyzed under rain.Finally,the slope engineering effect under slope gravity,bridge load and earthquake was researched by FLAC3D numerical simulation software.It is concluded that the site is suitable for building bridge.
Baling River bridge is located in the alpine gorge area.Its west bank is a dip slope with 300 m height.In order to ensure the bridge construction and operation,it is important to analyze the slope stability under the condition of rain,bridge load and earthquake.Firstly,characteristics of the west bank slope were studied such as the structure type,the combination of structural plane and slope surface,the weathering of rock mass and the physical and mechanical properties.Secondly,based on the slope rock mass quality classification,the slope stability was analyzed under rain.Finally,the slope engineering effect under slope gravity,bridge load and earthquake was researched by FLAC3D numerical simulation software.It is concluded that the site is suitable for building bridge.
引文
[1]曾钱帮,王思敬,彭运动,等.坝陵河悬索桥西岸隧道式锚碇锚塞体长度方案比选的数值模拟研究[J].水文地质工程地质,2005,32(6):66-70.ZENG Qian-bang,WANG Si-jing,PENG Yun-dong,et al.Numerical simulation on scheme comparison be-tween two concrete-plug lengths of west tunnel-typeanchorage of Balinghe Suspension Bridge[J].Hydro-geology and Engineering Geology,2005,32(6):66-70.(in Chinese).
[2]樊敬亮.高山峡谷地区大跨度桥梁岸坡稳定性分析、趋势预测及应用研究[D].北京:中国科学院地质与地球物理研究所,2005.
[3]张咸恭,王思敬,张倬元,等.中国工程地质学[M].北京:科学出版社,2000.
[4]朱建业,邵维中,陈延安,等.GB50287—1999,水利水电工程地质勘察规范[S].北京:中国建筑工业出版社,2006.
[5]祁生文,伍法权,兰恒星.盘石头水库泄洪洞、导流洞进出口边坡稳定性分析[J].岩石力学与工程学报,2002,21(3):353-359.QI Sheng-wen,WU Fan-quan,LAN Heng-xing.Sta-bility analysis on high slopes at outlet and inlet of thediversion and spillway tunnels of Panshitou reservoir[J].Chinese Journal of Rock Mechanics and Engi-neering,2002,21(3):353-359.(in Chinese).
[6]廖秋林,曾钱帮,刘彤,等.基于ANSYS平台复杂地质体FLAC3D模型的自动生成[J].岩石力学与工程学报,2005,24(6):1010-1013.LIAO Qiu-lin,ZENG Qian-bang,LIU Tong,et al.Automatic model generation of complex geology bodywith FLAC3D based on ANSYS platform[J].ChineseJournal of Rock Mechanics and Engineering,2005,24(6):1010-1013.(in Chinese).
[7]王石春,邢念信,李云林,等.GB50218—1994,工程岩体分级标准[S].北京:中国计划出版社,2000.
[8]刘鸿文.材料力学(上册)[M].北京:高等教育出版社,1995.
[2]樊敬亮.高山峡谷地区大跨度桥梁岸坡稳定性分析、趋势预测及应用研究[D].北京:中国科学院地质与地球物理研究所,2005.
[3]张咸恭,王思敬,张倬元,等.中国工程地质学[M].北京:科学出版社,2000.
[4]朱建业,邵维中,陈延安,等.GB50287—1999,水利水电工程地质勘察规范[S].北京:中国建筑工业出版社,2006.
[5]祁生文,伍法权,兰恒星.盘石头水库泄洪洞、导流洞进出口边坡稳定性分析[J].岩石力学与工程学报,2002,21(3):353-359.QI Sheng-wen,WU Fan-quan,LAN Heng-xing.Sta-bility analysis on high slopes at outlet and inlet of thediversion and spillway tunnels of Panshitou reservoir[J].Chinese Journal of Rock Mechanics and Engi-neering,2002,21(3):353-359.(in Chinese).
[6]廖秋林,曾钱帮,刘彤,等.基于ANSYS平台复杂地质体FLAC3D模型的自动生成[J].岩石力学与工程学报,2005,24(6):1010-1013.LIAO Qiu-lin,ZENG Qian-bang,LIU Tong,et al.Automatic model generation of complex geology bodywith FLAC3D based on ANSYS platform[J].ChineseJournal of Rock Mechanics and Engineering,2005,24(6):1010-1013.(in Chinese).
[7]王石春,邢念信,李云林,等.GB50218—1994,工程岩体分级标准[S].北京:中国计划出版社,2000.
[8]刘鸿文.材料力学(上册)[M].北京:高等教育出版社,1995.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心