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工程科学与技术:2009,41(3):43-50
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“5·12” 汶川地震对线路工程抗震技术提出的新课题
(1.西南交通大学 土木工程学院,四川 成都 610031;2.四川省交通厅 公路规划勘察设计研究院 四川 成都 610041)
New Research Subjects on Earthquake Resistant Techniques of Line Engineering Extracted from “5·12” Wenchuan Earthquake
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中文摘要: “5·12”汶川地震对地震学、地震工程学都提出了新的挑战,对线路工程而言,核心科学问题是发生在山区的地震波传播的三维特性与地形巨大高差所导致的斜坡重力效应的耦合,对线路工程的破坏作用和工程在地震作用下的破坏机理。首先通过对汶川地震灾害现象的分析,归纳出线路工程抗震技术面临的3个新的课题:即基于艰险山区地震波传播特性的公路铁路选线设计技术,地震诱发线路工程山地灾害机理及防治技术,以系统工程理论为指导的生命线工程抗震对策;同时对这3个课题的研究现状和研究思路提出了建议;然后从填补现行规范空白以及对现有规范技术框架进行延展和更新两个层面,论述了汶川地震对线路工程抗震设计规范发展的推动作用。
Abstract:“5·12” Wenchuan earthquake offered new challenges to seismology and earthquake engineering. For line engineering, the primary problems are damage mechanisms caused by the coupling interaction of three dimensional characteristics of seismic wave propagation and gravity effect of slope in mountainous terrain. First, based on the analysis of the subgrade earthquake damage caused by Wenchuan earthquake, three new subjects on earthquake resistant techniques of line engineering are summarized, including highway and railway route selection techniques based on the propagational characteristic of seismic wave in mountainous area, the mechanisms and prevention techniques of mountain hazards caused by earthquake, and earthquake resistant countermeasures of lifeline engineering under the guidance of system engineering theory. Then, the research status and technical schemes on three new subjects are proposed. Last, from two phases, including the supplement of the blank of the current earthquake resistant design standards and the renew and development of the earthquake resistant technological framework, the promotion effect of Wenchuan earthquake on the development of earthquake resistant techniques of line engineering is presented.
文章编号:20090305     中图分类号:    文献标志码:
基金项目:国家重点基础研究发展计划资助项目(2008CB425802);西部交通建设科技资助项目(200731800003)
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姚令侃,陈强.“5·12” 汶川地震对线路工程抗震技术提出的新课题[J].工程科学与技术,2009,41(3):43-50.
.New Research Subjects on Earthquake Resistant Techniques of Line Engineering Extracted from “5·12” Wenchuan Earthquake[J].Advanced Engineering Sciences,2009,41(3):43-50.