十字换乘地铁车站结构地震响应分析
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摘要
换乘地铁车站结构由于其显著的空间效应以及其在地下交通线网中的重要性,其抗震性能值得关注。基于某十字换乘车站结构,建立其三维计算分析模型。其中将其简化为两方向相同长度和结构形式的地下框架结构,采用等价线性化模型Davidenkov模型考虑土体非线性。计算分析了不同地震动类型和幅值作用下换乘车站结构的地震响应规律。同时,将换乘站地震响应与典型的单体车站进行了比较,探讨了其空间效应及抗震性能。基于本文的计算分析结果表明:对于文中计算分析案例而言,由于换乘站端墙的影响,其空间效应比单体车站强,层间相对变形较小,因此其整体抗震性能优于单体车站。另外,由于换乘站平面尺寸相对较大,在一定程度上阻隔了地震波的传播,因而换乘站降低了土体地表响应,而单体车站则放大了土体地表响应。论文研究成果对换乘车站的抗震设计与分析具有一定的参考意义。
The seismic response of transfer station structure is worthy of attention due to its significant spatial effects and importance in the underground network. A three-dimensional computational analysis model is established, in which the transfer station structure is simplified into a cross-shaped structure composed of two frame structures with identical length and structural form, and the equivalent linear model Davidenkov model is employed to consider the nonlinear model of soil. The seismic response of the transfer station structure is calculated under different seismic wave amplitudes and types. At the same time, the spatial effect is analyzed by comparing the seismic response of the transfer station structure with that of a typical subway station.Based on the calculated results, it is shown that the overall seismic performance of the transfer station structure is better than that of a single station due to the influence of its end walls, and its spatial effect is stronger and its relative deformation is smaller. The transfer station blocks the transmission of seismic waves to a certain extent because of its relatively large size. Therefore, the existence of the transfer station reduces site soil acceleration significantly, while the single station amplifies the response of soil surface. The research results can provide some references for the seismic design and analysis of transfer station structures.
The seismic response of transfer station structure is worthy of attention due to its significant spatial effects and importance in the underground network. A three-dimensional computational analysis model is established, in which the transfer station structure is simplified into a cross-shaped structure composed of two frame structures with identical length and structural form, and the equivalent linear model Davidenkov model is employed to consider the nonlinear model of soil. The seismic response of the transfer station structure is calculated under different seismic wave amplitudes and types. At the same time, the spatial effect is analyzed by comparing the seismic response of the transfer station structure with that of a typical subway station.Based on the calculated results, it is shown that the overall seismic performance of the transfer station structure is better than that of a single station due to the influence of its end walls, and its spatial effect is stronger and its relative deformation is smaller. The transfer station blocks the transmission of seismic waves to a certain extent because of its relatively large size. Therefore, the existence of the transfer station reduces site soil acceleration significantly, while the single station amplifies the response of soil surface. The research results can provide some references for the seismic design and analysis of transfer station structures.
引文
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[11]TSINIDIS G.Response characteristics of rectangular tunnels in soft soil subjected to transversal ground shaking[J].Tunnelling and Underground Space Technology,2017,62:1-22.
[12]黄锐财.地铁车站换乘节点地震响应分析[D].广州:华南理工大学,2016.(HUANG Rui-cai.Seismic response analysis of subway station transfer nodes[D].Guangzhou:South China University of Technology,2016.(in Chinese))
[13]张宇.T型交叉换乘车站地震反应和损伤分析[D].北京:北京交通大学,2017.(ZHANG Yu.The analysis of seismic response and damage of T-shaped transfer station[D].Beijing:Beijing Jiaotong University,2017.(in Chinese))
[14]季倩倩.地铁车站结构振动台模型试验研究[D].上海:同济大学,2002.(JI Qian-qian.Shaking table testing on underground subway station structures[D].Shanghai:Tongji University,2002.(in Chinese))
[15]楼梦麟,潘旦光,范立础.土层地震反应分析中侧向人工边界的影响[J].同济大学学报,2003,31(7):757-761.(LOU Meng-lin,PAN Dan-guang,FAN Li-chu.Effect of vertical artificial boundary on seismic response of soil layer[J].Journal of Tongji University,2003,31(7):757-761.(in Chinese))
[16]GB 50909-2014城市轨道交通结构抗震设计规范[S].2014.(GB 50909-2014 Code for seismic design of urban rail transit structures[S].2014.(in Chinese))
[17]ZHUANG H,HU Z,WANG X,et al.Seismic responses of a large underground structure in liquefied soils by FEMnumerical modelling[J].Bulletin of Earthquake Engineering,2015,13(12):3645-3668.
[2]陈磊,陈国兴,龙慧.地铁交叉隧道近场强地震反应特性的三维精细化非线性有限元分析[J].岩土力学,2010,31(12):3971-3976,3983.(CHEN Lei,CHEN Guo-xing,LONG Hui.3D refined nonlinear finite element analysis of intersecting metro tunnels under near-field ground motion[J].Rock and Soil Mechanics,2010,31(12):3971-3976,3983.(in Chinese))
[3]陶连金,王文沛,张波,等.竖向强震作用下密贴地铁地下交叉结构动力响应分析[J].岩土工程学报,2012,34(3):433-437.(TAO Lian-jin,WANG Wen-pei,ZHANG Bo,et al.Dynamic response of closely-attached intersecting underground subway structures under vertical strong ground motion[J].Chinese Journal of Geotechnical Engineering,2012,34(3):433-437.(in Chinese))
[4]安军海,陶连金,李积栋,等.地铁双层交叉隧道非线性地震响应分析[J].中国铁道科学,2015,36(3):66-2.(An Jun-hai,Tao Lian-jin,Li Ji-dong,et al.Nonlinear seismic response of double-decked intersecting metro tunnel[J].China Railway Science,2015,36(3):66-72.(in Chinese))
[5]李积栋,陶连金,吴秉林,等.密贴交叉隧道在强震作用下的三维动力响应分析[J].现代隧道技术,2014,51(1):26-31,104.(LI Ji-dong,TAO Lian-jin,WU Bing-lin,et al.Analysis of 3D dynamic responseof closely over lapping tunnels during a strong earthquake[J].Modern Tunneling Technology,2014,51(1):26-31,104.(in Chinese))
[6]王国波,陈梁,徐海清,等.紧邻多孔交叠隧道抗震性能研究[J].岩土力学,2012,33(8):2483-2490.(WANGGuo-bo,CHEN Liang,XU Hai-qing,et al.of seismic capability of aaj acent overlapping multi-tunnels[J].Rock and Soil Mechanics,2012,33(8):2483-2490.(in Chinese))
[7]黄俊,张波.地铁交叉结构近场地震反应振动台试验研究[J].水电能源科学,2013,31(2):120-122,153.(HUANG Jun,ZHANG Bo.Shaking table model test of subway cross-structure under near-field ground motion[J].Water Resources and Power,2013,31(2):120-122,153.(in Chinese))
[8]赵光,张涛,徐翔,等.城市交通节点多层交叉隧道结构体系抗震性能分析[J].现代隧道技术,2015,52(4):121-127.(ZHAO Guang,ZHANG Tao,XU Xiang,et al.Aseismic behavior analysis of a multi-deck intersected tunnel structure system at an urban transport node[J].Modern Tunneling Technology,2015,52(4):121-127.(in Chinese))
[9]胡建平,刘亚莲.浅埋交叉隧道地震动力响应及减震措施研究[J].地下空间与工程学报,2015,11(3):759-765.(HUJian-ping,LIU Ya-lian.Analysis on the seismic dynamic response and shock-absorption measures of shallow-burial cross tunnels[J].Chinese Journal of Underground Space and Engineering,2015,11(3):759-765.(in Chinese))
[10]ABATE G,MASSIMINO M R.Numerical modelling of the seismic response of a tunnel-soil-aboveground building system in Catania(Italy)[J].Bulletin of Earthquake Engineering,2017,15(1):469-491.
[11]TSINIDIS G.Response characteristics of rectangular tunnels in soft soil subjected to transversal ground shaking[J].Tunnelling and Underground Space Technology,2017,62:1-22.
[12]黄锐财.地铁车站换乘节点地震响应分析[D].广州:华南理工大学,2016.(HUANG Rui-cai.Seismic response analysis of subway station transfer nodes[D].Guangzhou:South China University of Technology,2016.(in Chinese))
[13]张宇.T型交叉换乘车站地震反应和损伤分析[D].北京:北京交通大学,2017.(ZHANG Yu.The analysis of seismic response and damage of T-shaped transfer station[D].Beijing:Beijing Jiaotong University,2017.(in Chinese))
[14]季倩倩.地铁车站结构振动台模型试验研究[D].上海:同济大学,2002.(JI Qian-qian.Shaking table testing on underground subway station structures[D].Shanghai:Tongji University,2002.(in Chinese))
[15]楼梦麟,潘旦光,范立础.土层地震反应分析中侧向人工边界的影响[J].同济大学学报,2003,31(7):757-761.(LOU Meng-lin,PAN Dan-guang,FAN Li-chu.Effect of vertical artificial boundary on seismic response of soil layer[J].Journal of Tongji University,2003,31(7):757-761.(in Chinese))
[16]GB 50909-2014城市轨道交通结构抗震设计规范[S].2014.(GB 50909-2014 Code for seismic design of urban rail transit structures[S].2014.(in Chinese))
[17]ZHUANG H,HU Z,WANG X,et al.Seismic responses of a large underground structure in liquefied soils by FEMnumerical modelling[J].Bulletin of Earthquake Engineering,2015,13(12):3645-3668.