盾构隧道联络通道地震响应规律研究
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摘要
联络通道与盾构隧道的连接处是隧道抗震的薄弱环节,但目前有关联络通道抗震性能的研究开展得还很少。对于隧道与联络通道连接部位这类典型的空间结构,三维动力有限元分析是最为有效的方法,而其中的人工边界条件和地震动输入方法是实现这一方法的关键技术之一。本文以显式形式将多次透射边界条件引入三维动力分析控制方程,采用分割算法分别求解边界节点和内部节点的响应,然后以对武汉长江隧道工程为背景,利用这种算法研究了隧道与联络通道连接处的地震响应规律,并对采用柔性搭接代替刚性接头和地基加固两种措施的减振效果进行了计算分析。
The joints between the connectional passages and the shield tunnels are weak links in earthquake,whereas little correlative research has been done so far.The most effective approach for such typical spatial structure is to simulate the whole soil-structure interaction system by finite element method.In this thesis,we introduced the multi-transmitting boundary into the dynamic governing equation with an explicit form and presented a partitioned solution procedure,which solved the responses of boundary nodes and inner nodes in a decoupled way.Then,this approach was applied to research the seismic responses of a connectional passage for a shield tunnel,with emphasis on the effect of two kinds of vibration reduction measure(1) substituting flexible joints for rigid joint of the connectional passage and(2) strengthening the soft soil foundation around the structure,and some valuable conclusions were drawn in the end.
The joints between the connectional passages and the shield tunnels are weak links in earthquake,whereas little correlative research has been done so far.The most effective approach for such typical spatial structure is to simulate the whole soil-structure interaction system by finite element method.In this thesis,we introduced the multi-transmitting boundary into the dynamic governing equation with an explicit form and presented a partitioned solution procedure,which solved the responses of boundary nodes and inner nodes in a decoupled way.Then,this approach was applied to research the seismic responses of a connectional passage for a shield tunnel,with emphasis on the effect of two kinds of vibration reduction measure(1) substituting flexible joints for rigid joint of the connectional passage and(2) strengthening the soft soil foundation around the structure,and some valuable conclusions were drawn in the end.
引文
[1]Kiyomiya O.Earthquake-resistant design features of immersed tunnels in Japan[J].Tunnelling and Underground Space Technology,1995,10(4):453-475.
[2]吕春英,刘维宁.铁路隧道抗震设计方法探讨[J].世界隧道,2000(增刊):359-364.
[3]林皋.地下结构抗震分析综述(上)[J].世界地震工程,1990,6(2):1-10.
[4]李斌,刘晶波,刘祥庆.地铁车站的强地震反应分析及设计地震动参数研究[J].地震工程与工程振动,2008,28(1):17-23.
[5]Youssef MA,Hashash J J,Schmidt H B,et al.Seismic design and analysis of underground structures[J].Tunnelling and Underground SpaceTechnology,2001,16:247-293.
[6]黄先峰.地下结构的抗震计算———响应位移法[J].铁道建筑,1999(6):3-6.
[7]刘学山.盾构隧道的纵向抗震分析研究[J].地下空间,2003,23(2):166-172.
[8]刘晶波,吕彦东.结构-地基动力相互作用问题分析的一种直接方法[J].土木工程学报,1998,31(3):55-64.
[9]关慧敏,廖振鹏.一种改善多次透射边界稳定性的措施[J].地震工程与工程振动,1997,17(4):1-8.
[10]廖振鹏.工程波动理论导论[M].北京:科学出版社,2002.
[11]廖振鹏,李小军.地表土层地震反应的等效线性化解法地震小区划-理论与实践[M].北京:地震出版社,1989.
[2]吕春英,刘维宁.铁路隧道抗震设计方法探讨[J].世界隧道,2000(增刊):359-364.
[3]林皋.地下结构抗震分析综述(上)[J].世界地震工程,1990,6(2):1-10.
[4]李斌,刘晶波,刘祥庆.地铁车站的强地震反应分析及设计地震动参数研究[J].地震工程与工程振动,2008,28(1):17-23.
[5]Youssef MA,Hashash J J,Schmidt H B,et al.Seismic design and analysis of underground structures[J].Tunnelling and Underground SpaceTechnology,2001,16:247-293.
[6]黄先峰.地下结构的抗震计算———响应位移法[J].铁道建筑,1999(6):3-6.
[7]刘学山.盾构隧道的纵向抗震分析研究[J].地下空间,2003,23(2):166-172.
[8]刘晶波,吕彦东.结构-地基动力相互作用问题分析的一种直接方法[J].土木工程学报,1998,31(3):55-64.
[9]关慧敏,廖振鹏.一种改善多次透射边界稳定性的措施[J].地震工程与工程振动,1997,17(4):1-8.
[10]廖振鹏.工程波动理论导论[M].北京:科学出版社,2002.
[11]廖振鹏,李小军.地表土层地震反应的等效线性化解法地震小区划-理论与实践[M].北京:地震出版社,1989.
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