浅埋交叉隧道地震动力响应及减震措施研究
|
摘要
运用ADINA软件中的Newmark直接积分法和Mohr-Coulomb弹塑性模型,计算了交叉隧道运行期,在不同地震动波和不同方向地震激励作用下,隧道顶部不同覆土厚度时动力响应规律;分析了衬砌厚度变化对隧道地震反应的影响。计算结果表明:垂直于隧道轴线方向的地震波对隧道结构影响最大,对于立体交叉隧道最大位移、最大加速度一般发生在上部隧道顶板中间位置处,而最大主压应力一般出现在隧道顶板与边墙连接处,这些部位是结构安全的关键点,设计时应重点关注;随着隧道顶部覆土厚度的增加结构相对位移、加速度和应力都有所增加,且位移和应力变化比加速度大,当覆土厚度增加到一定程度时,响应将基本趋于稳定;随着衬砌厚度的增加结构最大相对位移和应力逐渐减小,而加速度将逐渐增大,但减小和增大幅值随衬砌厚度增加而越来越小。
Using the Newmark immediate integration in ADINA and Mohr- Coulomb elasto-plastic model,the dynamic response law of cross tunnels with different thickness of covering soil under the impact of various seismic wave and multi-directional seismic excitation is calculated,and the influence of the thickness of lining on the seismic response of tunnels is also analyzed. The calculation result shows that the seismic wave vertical to the axis of the tunnel has the most significant impact on the tunnel structure. Also,the maximum displacement and acceleration normally occur at the middle point of upper tunnels,and the maximum principal compressive stress usually appears at the juncture between the roof of the upper tunnel and the sidewall. Both these positions are critical to structural safety,which deserve special attention in design. Another conclusion is that the relative displacement and acceleration increase with the thickness of covering soil,and that the variation in displacement and stress is larger than that of the acceleration. The response,however,stabilizes as the thickness of covering soil reaches a certain level. The results also reveal that the maximum displacement and stress diminishes yet acceleration rises as the thickness of lining increases,but the amplitude,both in increase and in decrease,abates.
Using the Newmark immediate integration in ADINA and Mohr- Coulomb elasto-plastic model,the dynamic response law of cross tunnels with different thickness of covering soil under the impact of various seismic wave and multi-directional seismic excitation is calculated,and the influence of the thickness of lining on the seismic response of tunnels is also analyzed. The calculation result shows that the seismic wave vertical to the axis of the tunnel has the most significant impact on the tunnel structure. Also,the maximum displacement and acceleration normally occur at the middle point of upper tunnels,and the maximum principal compressive stress usually appears at the juncture between the roof of the upper tunnel and the sidewall. Both these positions are critical to structural safety,which deserve special attention in design. Another conclusion is that the relative displacement and acceleration increase with the thickness of covering soil,and that the variation in displacement and stress is larger than that of the acceleration. The response,however,stabilizes as the thickness of covering soil reaches a certain level. The results also reveal that the maximum displacement and stress diminishes yet acceleration rises as the thickness of lining increases,but the amplitude,both in increase and in decrease,abates.
引文
[1]许增会,宋宏伟.地震对地下工程影响的研究现状与展望[J].山西建筑,2003,29(7):35-36.(Xu Zenghui,Song Hongwei.Status of seismic effects on underground engineering and prospects[J].Shanxi Architecture,2003,29(7):35-36.(in Chinese))
[2]李凯玲,张亚,刘妮娜.土-地铁隧道动力相互作用模型试验分析[J].工程地质学报,2007,15(4):532-538.(Li Kailing,Zhang Ya,Liu Nina.Model test of soil-metro tunnel dynamic interaction[J].Journal of Engineering Geology,2007,15(4):532-538.(in Chinese))
[3]刘妮娜,门玉明,彭建兵,等.地震荷载作用下地铁盾构隧道动力响应分析[J].水文地质工程地质,2010,37(4):58-62.(Liu Nina,Men Yuming,Peng Jianbin,et al.Dynamic response of shield metro tunnel in earthquake load[J].Hydrogeology&Engineering Geology,2010,37(4):58-62.(in Chinese))
[4]郑永来,杨林德,李文艺,等.地下结构抗震[M].上海:同济大学出版社,2005.(Zheng Yonglai,Yang Linde,Li Wenyi,et al.Earthquake resistance of underground structures[M].Shanghai:Tongji University Press,2005.(in Chinese))
[5]中华人民共和国行业标准编写组.公路工程抗震设计规范(JTJ004—89)[S].北京:人民交通出版社,1989.(The professional Standards Compilation Group of People’s Republic of earthquake resistant design for highway engineering(JTJ004—89)[S].Beijing:China Communications Press,1989.(in Chinese))
[6]孙铁成,高波,叶朝良.地下结构抗震减震措施与研究方法探讨[J].现代隧道技术,2007,44(3):1-5,10.(Sun Tiecheng,Gao Bo,Ye Zhaoliang.Discussion on anti-seismic and seismic-relieving measures and corresponding research methods for underground structures[J].Modern Tunnelling Technology,2007,44(3):1-5,10.(in Chinese))
[7]黄胜,陈卫忠,杨建平,等.地下工程地震动力响应及抗震研究[J].岩石力学与工程学报,2009,28(3):483-490.(Huang Sheng,Chen Weizhong,Yang Jianping,et al.Research on earthquake-induced dynamic responses and aseismic measures for underground engineering[J].Chinese Journal of Rock mechanics and Engineering,2009,28(3):483-490.(in Chinese))
[8]尹广斌,张燎军,俞佩斯.基于ADINA软基上地震动输入方法研究及其应用[J].水电能源科学,2012,30(1):135-138.(Yin Guangbin,Zhang Liaojun,Yu Peisi.Study on method of earthquake input on soft foundation based on ADINA and its application[J].Water Resources and Power,2012,30(1):135-138.(in Chinese))
[9]张雄.计算动力学[M].北京:清华大学出版社,2007.(Zhang Xiong.Computational dynamics[M]Beijing:Tsinghua University Press,2007.(in Chinese))
[10]胡聿贤.地震工程学[M].北京:地震出版社,1988.(Hu Yuxian,Earthquake engineering[M].Beijing:Seismological Press,1988.(in Chinese))
[11]谢和平.岩石力学[M].北京:科学出版社,2004.(Xie Heping.Rock Mechanics[M].Beijing:Science Press,2004.(in Chinese))
[12]刘小弟.云南澜沧-耿马地震近场地面运动特征研究[M].北京:科学出版社,1990.(Liu Xiaodi.The research on the feature of near-field ground motions of Yunan Lancang-Gengma Earthquak[M].Beijing:Science Press,1990.(in Chinese))
[13]建筑抗震设计规范(GB50011—2010)[M].北京:中国建筑工业出版社,2010.(Code for Seismic Design of Buildings(GB50011—2010)[M].Beijing:China Architecture&Building Press,2010.(in Chinese))
[2]李凯玲,张亚,刘妮娜.土-地铁隧道动力相互作用模型试验分析[J].工程地质学报,2007,15(4):532-538.(Li Kailing,Zhang Ya,Liu Nina.Model test of soil-metro tunnel dynamic interaction[J].Journal of Engineering Geology,2007,15(4):532-538.(in Chinese))
[3]刘妮娜,门玉明,彭建兵,等.地震荷载作用下地铁盾构隧道动力响应分析[J].水文地质工程地质,2010,37(4):58-62.(Liu Nina,Men Yuming,Peng Jianbin,et al.Dynamic response of shield metro tunnel in earthquake load[J].Hydrogeology&Engineering Geology,2010,37(4):58-62.(in Chinese))
[4]郑永来,杨林德,李文艺,等.地下结构抗震[M].上海:同济大学出版社,2005.(Zheng Yonglai,Yang Linde,Li Wenyi,et al.Earthquake resistance of underground structures[M].Shanghai:Tongji University Press,2005.(in Chinese))
[5]中华人民共和国行业标准编写组.公路工程抗震设计规范(JTJ004—89)[S].北京:人民交通出版社,1989.(The professional Standards Compilation Group of People’s Republic of earthquake resistant design for highway engineering(JTJ004—89)[S].Beijing:China Communications Press,1989.(in Chinese))
[6]孙铁成,高波,叶朝良.地下结构抗震减震措施与研究方法探讨[J].现代隧道技术,2007,44(3):1-5,10.(Sun Tiecheng,Gao Bo,Ye Zhaoliang.Discussion on anti-seismic and seismic-relieving measures and corresponding research methods for underground structures[J].Modern Tunnelling Technology,2007,44(3):1-5,10.(in Chinese))
[7]黄胜,陈卫忠,杨建平,等.地下工程地震动力响应及抗震研究[J].岩石力学与工程学报,2009,28(3):483-490.(Huang Sheng,Chen Weizhong,Yang Jianping,et al.Research on earthquake-induced dynamic responses and aseismic measures for underground engineering[J].Chinese Journal of Rock mechanics and Engineering,2009,28(3):483-490.(in Chinese))
[8]尹广斌,张燎军,俞佩斯.基于ADINA软基上地震动输入方法研究及其应用[J].水电能源科学,2012,30(1):135-138.(Yin Guangbin,Zhang Liaojun,Yu Peisi.Study on method of earthquake input on soft foundation based on ADINA and its application[J].Water Resources and Power,2012,30(1):135-138.(in Chinese))
[9]张雄.计算动力学[M].北京:清华大学出版社,2007.(Zhang Xiong.Computational dynamics[M]Beijing:Tsinghua University Press,2007.(in Chinese))
[10]胡聿贤.地震工程学[M].北京:地震出版社,1988.(Hu Yuxian,Earthquake engineering[M].Beijing:Seismological Press,1988.(in Chinese))
[11]谢和平.岩石力学[M].北京:科学出版社,2004.(Xie Heping.Rock Mechanics[M].Beijing:Science Press,2004.(in Chinese))
[12]刘小弟.云南澜沧-耿马地震近场地面运动特征研究[M].北京:科学出版社,1990.(Liu Xiaodi.The research on the feature of near-field ground motions of Yunan Lancang-Gengma Earthquak[M].Beijing:Science Press,1990.(in Chinese))
[13]建筑抗震设计规范(GB50011—2010)[M].北京:中国建筑工业出版社,2010.(Code for Seismic Design of Buildings(GB50011—2010)[M].Beijing:China Architecture&Building Press,2010.(in Chinese))
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