基于可拓学的地铁车站深基坑施工安全评价
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摘要
针对地铁车站深基坑施工工艺复杂、不确定因素多、施工阶段风险概率高、风险损失后果严重等问题,采用层次分析法构建评价指标体系,利用可拓学理论建立可拓评价模型,通过定量化、模型化的方式使矛盾问题转化为相容问题。得到相应的评价指标体系和评价模型后,结合工程实际和专家打分确定安全评价指标权重,进而通过计算评价指标和对象之间的关联函数和关联度,最终得出目标层所属的安全等级。工程实例结果表明,基于可拓学的安全评价结果基本符合实际施工安全等级,该方法有效可行。
This paper is aimed to introduce the analytic hierarchical process( AHP) and extension theory to develop a relevant comprehensive evaluation system for the safety engineering excavation of the deep foundation pit in the construction of the subway stations. Seeing the great difficulty and controversy of the problems in the construction stage of such foundations in the construction,it is necessary to take into account innumerable technological harnuts,unthinkable uncertain factors,high risk probabilities and unexpected consequence of risks to be involved. It is just for such deeds that has made the given paper entitled with its mission to examine the risk identification,the safety evaluation index system construction,and the safety evaluation model establishment. And,then,the paper tries to transform the contradictory problems into a compatible questionnaire mode through quantitative and modeling categorization mode by introducing the basic theory of extension and the extension evaluation method. In doing so,the paper has also tried to describe the construction safety risk of the deep foundation pit of the subway stations via the basic properties of the matter elements. In accordance with the particular features and demands of the deep foundation pit projects of the subway station,it is essential to build up a classic domain matter-element matrix and the node domain matter-element matrix of the safety index. At the same time,we have also described quantitatively the correlation functions of the extension principle so as to gain the correlation degrees and extents between them in all the evaluation items so that the construction safety evaluation system for such projects can be established.However,before the establishment of the extension evaluation model,the paper had defined the potential risk of the deep foundation pit construction in subway stations and constructs a safety evaluation index system suitable for this project by using the AHP. And,later,we have also identified and determined the weight of each evaluation index by combining AHP with the expert investigation method. Furthermore,coupled with the actual situation of the deep foundation pit engineering project of Shenzhen subway station,we have also made a quantitative analysis of the influential factors of the safety evaluation of the deep foundation pit construction of the aforementioned subway station by using the extension AHP by applying the construction safety evaluation model of the deep foundation pit engineering of subway station for the quantitative evaluation and its surrounding area of the said station. Seeing the environmental safety situation,the results of the above said engineering model tend to demonstrate that the safety evaluation results based on extension theory have been found well in accord with the actual construction safety level,which indicates that the method we have chosen turns out to be both effective and feasible.
This paper is aimed to introduce the analytic hierarchical process( AHP) and extension theory to develop a relevant comprehensive evaluation system for the safety engineering excavation of the deep foundation pit in the construction of the subway stations. Seeing the great difficulty and controversy of the problems in the construction stage of such foundations in the construction,it is necessary to take into account innumerable technological harnuts,unthinkable uncertain factors,high risk probabilities and unexpected consequence of risks to be involved. It is just for such deeds that has made the given paper entitled with its mission to examine the risk identification,the safety evaluation index system construction,and the safety evaluation model establishment. And,then,the paper tries to transform the contradictory problems into a compatible questionnaire mode through quantitative and modeling categorization mode by introducing the basic theory of extension and the extension evaluation method. In doing so,the paper has also tried to describe the construction safety risk of the deep foundation pit of the subway stations via the basic properties of the matter elements. In accordance with the particular features and demands of the deep foundation pit projects of the subway station,it is essential to build up a classic domain matter-element matrix and the node domain matter-element matrix of the safety index. At the same time,we have also described quantitatively the correlation functions of the extension principle so as to gain the correlation degrees and extents between them in all the evaluation items so that the construction safety evaluation system for such projects can be established.However,before the establishment of the extension evaluation model,the paper had defined the potential risk of the deep foundation pit construction in subway stations and constructs a safety evaluation index system suitable for this project by using the AHP. And,later,we have also identified and determined the weight of each evaluation index by combining AHP with the expert investigation method. Furthermore,coupled with the actual situation of the deep foundation pit engineering project of Shenzhen subway station,we have also made a quantitative analysis of the influential factors of the safety evaluation of the deep foundation pit construction of the aforementioned subway station by using the extension AHP by applying the construction safety evaluation model of the deep foundation pit engineering of subway station for the quantitative evaluation and its surrounding area of the said station. Seeing the environmental safety situation,the results of the above said engineering model tend to demonstrate that the safety evaluation results based on extension theory have been found well in accord with the actual construction safety level,which indicates that the method we have chosen turns out to be both effective and feasible.
引文
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[9] YANG Zhuo(杨卓),RONG Xiaoli(戎晓力),LU Hao(卢浩),et al. Risk assessment on the tunnel collapse probability by the theory of extenics in combination with the entropy weight and matter-model[J]. Journal of Safety and Environment(安全与环境学报),2016,16(2):15-19.
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[2] WANG Yan(王岩),FANG Chuanglin(方创琳),ZHANG Qiang(张蔷). Progress and prospect of urban vulnerability[J]. Progress in Geography(地理科学进展),2013,32(5):755-768.
[3] YANG Chunyan(杨春燕),CAI Wen(蔡文). Extenics(可拓学)[M]. Beijing:Science Press,2014.
[4] YANG Chunyan(杨春燕),CAI Wen(蔡文). Extension engineering(可拓工程)[M]. Beijing:Science Press,2007.
[5] CAI Wen(蔡文),YANG Chunyan(杨春燕). Applied research,popularization and promotion of extensible studies(overview)[J]. Mathematics in Practice and Theory(数学的实践与认识),2010,40(7):214-220.
[6] CHEN Jing(陈晶),BAO Xueying(鲍学英),ZHAO Yanlong(赵延龙). On the assessment of the durability of the concrete bridges in service via the fazzy-EAHP[J].Journal of Safety and Environment(安全与环境学报),2015,15(4):16-20.
[7] LUO Liangwei(罗良维),YANG Chunyan(杨春燕).Study on ceramic logistics packaging design based on gene extension modular[J]. Journal of Guangdong University of Technology(广东工业大学学报),2015,32(2):11-16,149.
[8] GUO Wen(郭雯). Research on the evaluation of civil building energy-saving based on the extension methods(基于可拓方法的民用建筑节能评价研究)[D]. Xi'an:Xi'an University of Architecture and Technology,2012.
[9] YANG Zhuo(杨卓),RONG Xiaoli(戎晓力),LU Hao(卢浩),et al. Risk assessment on the tunnel collapse probability by the theory of extenics in combination with the entropy weight and matter-model[J]. Journal of Safety and Environment(安全与环境学报),2016,16(2):15-19.
[10] HE Yabo(何亚伯),SHUAI Qingyan(帅青燕). Comprehensive assessment on green building based on extension theory[J]. Building Science(建筑科学),2012,28(12):90-93.
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