地铁隧道结构灾变模型及应用研究  

Study on Catastrophic Model of Subway Tunnel Structure and its Application

作　　者：黄震[1] 傅鹤林[1] 尹光明 王慧 张加兵[1] 史越[1] HUANG Zhen;FU Helin;YIN Guangming;WANG Hui;ZHANG Jiabing;SHI Yue(School of Civil Engineering,Central South University,Changsha 410075,China;Changsha Metro Group Co.,Ltd.,Changsha 410133,China)

机构地区：[1]中南大学土木工程学院,湖南长沙410075 [2]长沙市轨道交通集团有限公司,湖南长沙410133

出　　处：《灾害学》2018年第3期216-221,228,共7页Journal of Catastrophology

基　　金：国家自然科学基金资助项目(51538009;51578550);中南大学中央高校基本科研业务费专项资金资助项目(2017zzts152)

摘　　要：地铁隧道结构灾害影响地铁运营和周边环境安全,其灾变模式和减灾机制的研究对隧道结构安全维护具有重要的价值。依据运营地铁隧道结构灾变过程,基于灾变链式理论,构建了地铁隧道结构灾变链式结构和灾变数学模型,分析了运营地铁隧道结构灾变特征以及不同灾变阶段的断链减灾机制与措施,并应用该模型对某地铁结构灾变特征,从断链减灾模式角度,提出了控制隧道结构灾变演化的具体措施。研究结果表明,隧道结构灾变过程具有链式结构特点,其灾变链式模型可有效地描述结构灾变从孕育阶段到爆发阶段的演化过程;隧道结构灾变过程具有因果关系、渐变与突变共存及蔓延的特征,其减灾措施应从不同灾变阶段的断链机制出发;该模型应用于该地铁隧道结构灾变过程,有效控制了隧道结构灾变的演化。The structure damage of metro tunnel affects the operation of subway and the surrounding environment. The study of its catastrophic mode and mechanism is of great value to the safety maintenance of tunnel structure. On the basis of metro tunnel structure catastrophe, the subway tunnel structure catastrophe chain structure and catastrophe mathematical model is constructed by the theory of catastrophe chain. Subway tunnel structure characteristics and different stages of disaster chain cutting disaster mitigation mechanism and measures are analyzed. The model is applied to the study of the catastrophic characteristics of a subway tunnel structure, and from the viewpoint of broken chain disaster reduction model, specific measures to control the catastrophic evolution of tunnel structures are put forward. The results show that the catastrophic process of tunnel structure has the characteristics of chain structure. Its catastrophic chain model can effectively describe the evolution process of structure disaster from incubation stage to explosion stage; The catastrophic process of tunnel structure has the characteristics of cause and effect, transition and mutation, coexistence and spread, and its mitigation measures are based on the chain breaking mechanism of different catastrophic stages; The model is applied to the catastrophic process of a metro tunnel structure, which effectively controls the catastrophic evolution of the tunnel structure.

关 键 词：地铁 隧道结构 灾变链式理论 灾害链 减灾措施 

分 类 号：U25[交通运输工程—道路与铁道工程] X951[环境科学与工程—安全科学]