Y大桥桩基施工安全风险评估与控制管理

发布时间：2018-01-17 13:26

本文关键词：Y大桥桩基施工安全风险评估与控制管理　出处：《大连理工大学》2015年硕士论文　论文类型：学位论文

【摘要】：随着我国经济持续、快速增长,公路交通事业飞速发展,桥梁工程在公路建设过程中处于咽喉地位,也是公路交通系统的重要组成部分。然而,由于当前我国对桥梁工程施工安全风险管理整体理论知识缺乏或对其风险管理的必要性重视不足,导致桥梁施工安全事故频繁发生。本文依托Y大桥工程,以该桥桩基施工为研究对象,以风险评估理论为基础,结合作业条件危险性评价法及指标体系法,展开对Y大桥桩基施工安全风险评估与控制管理问题的研究。其主要研究成果如下：(1)结合现有的风险评估理论,给出安全风险评估方法、施工风险源辨识及施工安全风险评估方法进行分析的概念,确定了Y大桥施工安全风险评估内容及施工安全风险评估技术路线；(2)概括了施工安全风险评估程序,对桩基施工进行了作业程序分解,为Y大桥施工安全风险辨识工作的开展提供了理论指导。基于现有风险源辨识理论和方法,辨识了Y大桥桩基施工风险及其对应风险源等级；(3)采用作业条件危险性评价法(LEC)对Y大桥桩基施工风险等级进行估测,将其分为一般风险(D值70)以及重大风险(D值≥70)；并对桩基施工采用专家调查法、指标体系法对事故严重程度和事故可能性进行估测,得出桩基事故为高度(Ⅲ级)风险,需采用风险控制或消减措施；(4)基于国内外现有的风险应对策略,结合本质安全措施、安全隔离或防护、警告或标示、教育培训等方法,为Y大桥桩基施工一般风险及重大风险分别提出了相应的控制方法。
[Abstract]:As China's economy sustained, rapid growth, the rapid development of highway traffic, the bridge engineering in the throat position in the process of highway construction is an important part of highway traffic system. However, due to lack of attention to the current bridge construction safety risk management of the whole theory of lack of knowledge or the necessity of risk management. The bridge construction safety accidents occurred frequently. Based on the Y bridge project, the construction of pile foundation of the bridge as the research object, based on risk assessment theory, combined with the operating conditions of risk evaluation method and index system method, research on Y pile foundation of bridge construction safety risk assessment and control management problems. The main results are as follows: (1) according to the existing theory of risk assessment, given the security risk assessment method, construction risk identification and construction safety risk assessment method of concept analysis, To determine the construction safety risk assessment of Y bridge and construction safety risk assessment techniques; (2) summarizes the construction safety risk assessment procedures, the pile foundation construction of process decomposition, provides a theoretical guidance for the construction work carried out security risk identification of the Y bridge. The existing risk identification theory and method based on the identification of the Y the pile foundation of bridge construction risk and the corresponding risk source level; (3) the job risk analysis method (LEC) for the construction of bridge pile foundation Y the level of risk estimation, which can be divided into general risk (D = 70) and high risk (D value = 70); and the expert investigation method for pile foundation construction. The index system to estimate the severity of the accident and the possibility of accidents, the pile foundation accident is high (grade III) risk, risk control and mitigation measures should be adopted; (4) risk coping strategies based on the existing combination. Intrinsically safe measures, safety isolation or protection, warning or marking, educational training and other methods provide corresponding control methods for general risks and major risks of Y bridge pile foundation construction.

【学位授予单位】：大连理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U445.551

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