本文選題：深基坑項目 + 監(jiān)測數(shù)據(jù)�。� 參考：《長春工業(yè)大學》2017年碩士論文

【摘要】：深基坑項目實施及使用過程中,其風險因素具有復雜而多變的特性,任何一個環(huán)節(jié)出現(xiàn)了問題,都可以使項目出現(xiàn)風險。如何能在深基坑項目的各個階段對這些風險因素進行分析并給出準確的評價及有效的應對措施,從而達到對深基坑項目的風險實施有效的控制,減少基坑事故的發(fā)生,一直是近年來專家學者們所關注得焦點。目前常用的深基坑項目風險評價方法,大多是應用專家經(jīng)驗或調(diào)查方法進行定性分析的基礎上,結合一定的定量方法,給出項目風險級別。上述研究方法一方面存在著一定的主觀不確定性,另一方面無法實現(xiàn)深基坑項目遠期風險預測研究。因此,其對項目風險有效控制作用有一定的限制。經(jīng)大量的實際基坑事故調(diào)查和數(shù)據(jù)分析表明,基坑的監(jiān)測數(shù)據(jù)可以有效地預測事故,對事故的發(fā)生有一定的預防作用。因此,如何應用深基坑項目的現(xiàn)場監(jiān)測數(shù)據(jù)進行風險預測評價,給出有效的風險應對是一個值得我們的關注的研究課題。本文以沈陽世茂五里河深基坑項目為例,結合大量深基坑項目工程實例的統(tǒng)計數(shù)據(jù)及研究成果,對基于現(xiàn)場監(jiān)測數(shù)據(jù)的深基坑項目風險預測方法及應對措施等問題進行了系統(tǒng)的研究。論文主要內(nèi)容及結論如下:(1)對深基坑項目特點、風險管理的過程進行了簡單闡述;對深基坑項目風險識別、風險評價的常用方法進行了總結、歸納;對沈陽世茂五里河深基坑項目采用的風險評價方法進行了介紹。(2)建立了基于監(jiān)測指標的深基坑項目風險預測評價體系,以現(xiàn)行國家規(guī)范累積報警值作為危險狀態(tài)的控制標準,建立了基于監(jiān)測指標的安全分級標準,為深基坑項目風險評價奠定了理論基礎。(3)基于深基坑監(jiān)測項目的灰色性,選用灰色預測模型對監(jiān)測數(shù)據(jù)進行預測,灰色關聯(lián)分析法確定各監(jiān)測項目的權重,在基于監(jiān)測指標的深基坑項目風險預測評價體系的基礎上對沈陽世茂五里河深基坑項目進行風險預測評價。(4)依據(jù)沈陽世茂五里河深基坑項目實測及預測風險值,分析了每項監(jiān)測項目的所呈現(xiàn)異常時所表現(xiàn)的安全狀態(tài)以及引發(fā)異常的可能風險源,結合單個監(jiān)測項目風險值確實風險決策,提出了有效的風險應對措施。
[Abstract]:In the process of implementation and use of deep foundation pit project, its risk factors have complex and changeable characteristics. Any problem in any link can make the project appear risk. How to analyze these risk factors in each stage of deep foundation pit project and give the accurate evaluation and effective countermeasures, so as to effectively control the risk of deep foundation pit project and reduce the occurrence of foundation pit accident. In recent years, experts and scholars have been the focus of attention. At present, most of the risk assessment methods used in deep foundation pit project are based on the qualitative analysis of expert experience or investigation method, combined with a certain quantitative method, the project risk level is given. On the one hand, there are some subjective uncertainties in the above research methods, on the other hand, it is impossible to carry out the long-term risk prediction research of deep foundation pit project. Therefore, it has some limitations on the effective control of project risk. A large number of actual foundation pit accident investigation and data analysis show that the foundation pit monitoring data can effectively predict the accident, and has a certain preventive effect on the occurrence of the accident. Therefore, how to use the field monitoring data of deep foundation pit project to predict and evaluate the risk and how to deal with the risk effectively is a research topic worthy of our attention. This paper takes the deep foundation pit project of Shimao Wuli River in Shenyang as an example, combining with the statistical data and research results of a large number of deep foundation pit project examples. The risk prediction methods and countermeasures of deep foundation pit project based on field monitoring data are systematically studied. The main contents and conclusions are as follows: (1) the characteristics of deep foundation pit project, the process of risk management, the common methods of risk identification and risk evaluation of deep foundation pit project are summarized and summarized. This paper introduces the risk assessment method used in the deep foundation pit project of Shimao Wuli River in Shenyang. (2) the risk prediction and evaluation system of the deep foundation pit project based on the monitoring index is established, and the current national standard cumulative alarm value is taken as the control standard of the dangerous state. The safety classification standard based on monitoring index is established, which lays a theoretical foundation for risk assessment of deep foundation pit project. (3) based on the gray nature of monitoring project of deep foundation pit, the grey prediction model is used to predict the monitoring data. Grey relational analysis method is used to determine the weight of each monitoring item. Based on the risk prediction and evaluation system of deep foundation pit project based on monitoring index, the risk prediction evaluation of deep foundation pit project of Shimao Wuli River in Shenyang is carried out. (4) according to the measured and predicted risk value of deep foundation pit project in Shenyang Shimao Wuli River, This paper analyzes the security state of each monitoring project when it appears to be abnormal and the possible risk sources that cause the abnormal. Combined with the risk decision of a single monitoring project, the effective risk countermeasures are put forward.
【學位授予單位】：長春工業(yè)大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TU753;TU71

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