罕遇地震隧道动力学洞口段二衬防垮塌抗震配筋技

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振动与冲击 ›› 2014, Vol. 33 ›› Issue (24) : 205-210.

论文

罕遇地震隧道动力学洞口段二衬防垮塌抗震配筋技

崔光耀1，赵瑞华1，刘维东1，王明年2，林国进3

作者信息 +

Study on the aseismic reinforcement technology of dynamic portal section under rare earthquake

CUI Guangyao1，ZHAO Rui-hua1,LIU Weidong1，WANG Mingnian2， LIN Guojin3

Author information +

文章历史 +

摘要

为改变隧道洞口段抗震“大震偏弱”的现状，引入了二衬防垮塌单层配筋抗震技术，与传统的双层配筋抗震技术相配合，共同进行隧道动力学洞口段的抗震设防设计。根据公路和铁路隧道现行抗震规范规定，提出了隧道动力学洞口段二衬防垮塌抗震配筋准则，并利用有限差分数值模拟技术研究了防垮塌抗震配筋适用范围，研究结果表明：设防烈度7度情况下，洞口浅埋段采用单层配筋抗震技术，洞口影响过渡段不需采取抗震设防措施；设防烈度8度情况下，洞口浅埋段采用双层配筋抗震技术，洞口影响过渡段采用单层配筋抗震技术；设防烈度9度况下，洞口浅埋段和洞口影响过渡段均采用双层配筋抗震技术进行抗震设防。研究成果对隧道动力学洞口段抗震技术的发展具有重要的意义。

Abstract

In order to change weaker seismic behavior of tunnel structure of fault rupture zone under large earthquakes，the monolayer reinforcement aseismic technology of second liner collapse control is proposed, cooperate with the traditional double reinforcement aseismatic technology，the aseismic design of tunnel portal section of dynamics is proceeded. According to the regulations of highway and railway tunnel current seismic code, the principles of tunnel portal section second liner collapse control of aseismic reinforcement is established, and finite difference numerical simulation technology is used to study the collapse prevention aseismic reinforcement scope of application, the results show that monolayer reinforcement aseismic technology is used for the tunnel portal shallow buried section, the tunnel portal effect transition section need not take the aseismic fortification measures at 7 degree earthquake intensity; the double-layer reinforcement aseismatic technology is used for the tunnel portal shallow buried section, and take the monolayer reinforcement aseismatic technology on the tunnel portal effect transition section at 8 degree earthquake intensity; the double-layer reinforcement aseismatic technology is used for the tunnel portal shallow buried section and the tunnel portal effect transition section at 9 degree earthquake intensity. These results are significant to the development of dynamic portal section aseismatic technology.

导出引用

崔光耀;赵瑞华;刘维东;王明年;林国进. 罕遇地震隧道动力学洞口段二衬防垮塌抗震配筋技[J]. 振动与冲击, 2014, 33(24): 205-210

CUI Guangyao;ZHAO Rui-hua;LIU Weidong;WANG Mingnian;LIN Guojin. Study on the aseismic reinforcement technology of dynamic portal section under rare earthquake[J]. Journal of Vibration and Shock, 2014, 33(24): 205-210