大跨徑公路斜拉橋施工安全風(fēng)險(xiǎn)預(yù)警系統(tǒng)研究
發(fā)布時(shí)間：2019-03-05 18:21
【摘要】：大跨徑公路斜拉橋施工系統(tǒng)復(fù)雜的技術(shù)經(jīng)濟(jì)特點(diǎn)決定了在其施工中的不確定性和風(fēng)險(xiǎn)性，并且其施工安全受技術(shù)、管理、環(huán)境等多方面的因素影響，耦合作用下的施工安全風(fēng)險(xiǎn)造成的損失及影響已嚴(yán)重制約大跨徑斜拉橋施工安全目標(biāo)的實(shí)現(xiàn)，甚至發(fā)生災(zāi)難性風(fēng)險(xiǎn)事件；進(jìn)行有效的風(fēng)險(xiǎn)預(yù)警管理將很大程度上降低大跨徑斜拉橋施工安全風(fēng)險(xiǎn)。但是目前大跨徑斜拉橋施工安全風(fēng)險(xiǎn)預(yù)警管理體系研究和應(yīng)用還相對(duì)薄弱，大跨徑斜拉橋施工過(guò)程極具風(fēng)險(xiǎn)性，，此現(xiàn)狀與要求進(jìn)行全面全過(guò)程風(fēng)險(xiǎn)預(yù)警管理的現(xiàn)實(shí)需要不相適應(yīng)。因此全面系統(tǒng)地研究大跨徑斜拉橋風(fēng)險(xiǎn)分析與預(yù)警的關(guān)鍵技術(shù)，形成和完善大跨徑斜拉橋施工安全風(fēng)險(xiǎn)預(yù)警管理理論，對(duì)于促進(jìn)大跨徑斜拉橋風(fēng)險(xiǎn)預(yù)警管理、提高管理水平和管理效果具有重要理論意義與實(shí)踐價(jià)值。本文以大跨徑斜拉橋施工安全控制全過(guò)程為背景，緊密結(jié)合其施工安全風(fēng)險(xiǎn)問(wèn)題，完成了以下幾方面的研究工作： 首先，本文結(jié)合大跨徑斜拉橋施工全過(guò)程安全風(fēng)險(xiǎn)特殊性，從風(fēng)險(xiǎn)因素、風(fēng)險(xiǎn)事件、風(fēng)險(xiǎn)損失等風(fēng)險(xiǎn)要素及風(fēng)險(xiǎn)鏈進(jìn)行了綜合系統(tǒng)的分析研究，建立了大跨徑斜拉橋基礎(chǔ)、索塔、上部結(jié)構(gòu)三大關(guān)鍵部位的施工安全風(fēng)險(xiǎn)空間。其次，基于大跨徑斜拉橋施工安全風(fēng)險(xiǎn)空間、風(fēng)險(xiǎn)辨識(shí)和風(fēng)險(xiǎn)估計(jì)分別從人的安全行為、物的安全狀態(tài)、施工技術(shù)安全性、施工組織管理安全性、施工環(huán)境安全性五個(gè)方面分析并建立了大跨徑斜拉橋施工安全風(fēng)險(xiǎn)預(yù)警指標(biāo)體系，并以安全度的思想采用專(zhuān)家確定法判斷大跨徑斜拉橋的施工安全風(fēng)險(xiǎn)警限。再次，基于風(fēng)險(xiǎn)分析-綜合-有針對(duì)地再分析的辯證思想，通過(guò)分析預(yù)警指標(biāo)體系中各指標(biāo)之間的相互影響，判斷其兩兩間相對(duì)優(yōu)勢(shì)度，并通過(guò)定性定量相結(jié)合的方式劃分風(fēng)險(xiǎn)預(yù)警指標(biāo)預(yù)警等級(jí)，建立了一級(jí)和二級(jí)大跨徑斜拉橋施工安全風(fēng)險(xiǎn)預(yù)警模糊網(wǎng)絡(luò)層次結(jié)構(gòu)模型，此模型綜合考慮了元素內(nèi)部和外部依存關(guān)系，不僅功能強(qiáng)大，而且與實(shí)際狀態(tài)更符合。最后，針對(duì)大跨徑斜拉橋施工全過(guò)程安全風(fēng)險(xiǎn)問(wèn)題，建立了大跨徑斜拉橋施工安全風(fēng)險(xiǎn)預(yù)警系統(tǒng)，并且詳細(xì)設(shè)計(jì)了知識(shí)庫(kù)、模型庫(kù)、數(shù)據(jù)庫(kù)、預(yù)警系統(tǒng)等要素，應(yīng)用該系統(tǒng)可以方便、快速地進(jìn)行大跨徑斜拉橋施工全過(guò)程的安全風(fēng)險(xiǎn)辨識(shí)、估計(jì)、評(píng)價(jià)、決策和預(yù)警管理，為有效控制風(fēng)險(xiǎn)提供依據(jù)。 本文結(jié)合科研項(xiàng)目《重慶豐都長(zhǎng)江二橋施工安全風(fēng)險(xiǎn)分析與控制研究》及交通部基礎(chǔ)科研項(xiàng)目（編號(hào)：2005319814030）《交通項(xiàng)目建設(shè)的全過(guò)程風(fēng)險(xiǎn)分析與控制研究》來(lái)完成。
[Abstract]:The complicated technical and economic characteristics of the construction system of long-span highway cable-stayed bridge determine the uncertainty and risk in its construction, and its construction safety is influenced by many factors such as technology, management, environment and so on. The loss and influence caused by the construction safety risk under the coupling action have seriously restricted the realization of the construction safety goal of the long-span cable-stayed bridge, and even occurred catastrophic risk events. Effective risk early-warning management will greatly reduce the construction safety risk of long-span cable-stayed bridges. But at present, the research and application of long-span cable-stayed bridge construction safety risk early warning management system is still relatively weak, and the construction process of long-span cable-stayed bridge is extremely risky. This situation does not fit in with the requirement of comprehensive risk early warning management in the whole process. Therefore, the key technology of risk analysis and early warning of long-span cable-stayed bridge is studied comprehensively and systematically, and the theory of construction safety risk early-warning management of long-span cable-stayed bridge is formed and perfected, which can promote the risk early-warning management of long-span cable-stayed bridge. It is of great theoretical and practical value to improve the level and effect of management. Taking the whole process of construction safety control of long-span cable-stayed bridge as the background, and combining closely with the construction safety risk problem, this paper completes the following research work: first of all, According to the particularity of safety risk during the construction of long-span cable-stayed bridge, this paper makes a comprehensive and systematic analysis on risk factors and risk chain, such as risk factor, risk event, risk loss and so on, and establishes the foundation and tower of long-span cable-stayed bridge. The construction safety risk space of the three key parts of the superstructure. Secondly, based on the construction safety risk space of long-span cable-stayed bridge, risk identification and risk estimation are based on the human safety behavior, the safety state of objects, the safety of construction technology, the safety of construction organization and management, respectively. The construction safety index system of long-span cable-stayed bridge is analyzed and established in five aspects of construction environment safety, and the safety risk warning limit of long-span cable-stayed bridge is judged by expert determination method based on the idea of safety degree. Thirdly, based on the dialectical thought of risk analysis-synthesis-aiming at ground re-analysis, by analyzing the mutual influence of each index in the early warning index system, the relative advantage degree of two pairs is judged. Through the combination of qualitative and quantitative methods, the risk early warning index early warning grade is divided, and the fuzzy network hierarchical structure model of construction safety risk early warning for first and second stage long span cable stayed bridges is established. This model considers both internal and external dependencies of elements, which is not only powerful, but also more consistent with the actual state. Finally, aiming at the safety risk problem in the construction process of long-span cable-stayed bridge, an early warning system for construction safety risk of long-span cable-stayed bridge is established, and the knowledge base, model base, database, early warning system and other elements are designed in detail. With this system, the safety risk identification, estimation, evaluation, decision-making and early-warning management of long-span cable-stayed bridge construction process can be carried out conveniently and quickly, which can provide the basis for effective risk control. This paper combines the research project "Research on Construction Safety risk Analysis and Control of the second Yangtze River Bridge in Fengdu, Chongqing" and the basic Scientific Research Project of the Ministry of Communications (No. 2005319814030) "Research on the whole process risk Analysis and Control of Traffic Project Construction".
【學(xué)位授予單位】：重慶交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：U448.27;U445.1
本文編號(hào)：2435165
[Abstract]:The complicated technical and economic characteristics of the construction system of long-span highway cable-stayed bridge determine the uncertainty and risk in its construction, and its construction safety is influenced by many factors such as technology, management, environment and so on. The loss and influence caused by the construction safety risk under the coupling action have seriously restricted the realization of the construction safety goal of the long-span cable-stayed bridge, and even occurred catastrophic risk events. Effective risk early-warning management will greatly reduce the construction safety risk of long-span cable-stayed bridges. But at present, the research and application of long-span cable-stayed bridge construction safety risk early warning management system is still relatively weak, and the construction process of long-span cable-stayed bridge is extremely risky. This situation does not fit in with the requirement of comprehensive risk early warning management in the whole process. Therefore, the key technology of risk analysis and early warning of long-span cable-stayed bridge is studied comprehensively and systematically, and the theory of construction safety risk early-warning management of long-span cable-stayed bridge is formed and perfected, which can promote the risk early-warning management of long-span cable-stayed bridge. It is of great theoretical and practical value to improve the level and effect of management. Taking the whole process of construction safety control of long-span cable-stayed bridge as the background, and combining closely with the construction safety risk problem, this paper completes the following research work: first of all, According to the particularity of safety risk during the construction of long-span cable-stayed bridge, this paper makes a comprehensive and systematic analysis on risk factors and risk chain, such as risk factor, risk event, risk loss and so on, and establishes the foundation and tower of long-span cable-stayed bridge. The construction safety risk space of the three key parts of the superstructure. Secondly, based on the construction safety risk space of long-span cable-stayed bridge, risk identification and risk estimation are based on the human safety behavior, the safety state of objects, the safety of construction technology, the safety of construction organization and management, respectively. The construction safety index system of long-span cable-stayed bridge is analyzed and established in five aspects of construction environment safety, and the safety risk warning limit of long-span cable-stayed bridge is judged by expert determination method based on the idea of safety degree. Thirdly, based on the dialectical thought of risk analysis-synthesis-aiming at ground re-analysis, by analyzing the mutual influence of each index in the early warning index system, the relative advantage degree of two pairs is judged. Through the combination of qualitative and quantitative methods, the risk early warning index early warning grade is divided, and the fuzzy network hierarchical structure model of construction safety risk early warning for first and second stage long span cable stayed bridges is established. This model considers both internal and external dependencies of elements, which is not only powerful, but also more consistent with the actual state. Finally, aiming at the safety risk problem in the construction process of long-span cable-stayed bridge, an early warning system for construction safety risk of long-span cable-stayed bridge is established, and the knowledge base, model base, database, early warning system and other elements are designed in detail. With this system, the safety risk identification, estimation, evaluation, decision-making and early-warning management of long-span cable-stayed bridge construction process can be carried out conveniently and quickly, which can provide the basis for effective risk control. This paper combines the research project "Research on Construction Safety risk Analysis and Control of the second Yangtze River Bridge in Fengdu, Chongqing" and the basic Scientific Research Project of the Ministry of Communications (No. 2005319814030) "Research on the whole process risk Analysis and Control of Traffic Project Construction".
【學(xué)位授予單位】：重慶交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：U448.27;U445.1
【參考文獻(xiàn)】
相關(guān)期刊論文 前8條
1 王巖,黃宏偉;地鐵區(qū)間隧道安全評(píng)估的層次-模糊綜合評(píng)判法[J];地下空間;2004年03期
2 周高平,陳遠(yuǎn)祥,周直;基礎(chǔ)設(shè)施項(xiàng)目投資風(fēng)險(xiǎn)預(yù)警指標(biāo)設(shè)計(jì)[J];重慶交通學(xué)院學(xué)報(bào);2005年03期
3 崔新媛，周直，於永和;風(fēng)險(xiǎn)影響圖與項(xiàng)目風(fēng)險(xiǎn)評(píng)價(jià)研究[J];重慶交通學(xué)院學(xué)報(bào);1996年S1期
4 鞏春領(lǐng);程進(jìn);沈祥福;;大跨度斜拉橋施工風(fēng)險(xiǎn)分析理論研究與應(yīng)用[J];城市道橋與防洪;2006年02期
5 張風(fēng)華;;橋梁風(fēng)險(xiǎn)評(píng)估方法與發(fā)展研究[J];城市道橋與防洪;2007年05期
6 項(xiàng)貽強(qiáng);張婷婷;孫筠;;國(guó)外橋梁工程項(xiàng)目風(fēng)險(xiǎn)及評(píng)估研究綜述[J];中外公路;2010年02期
7 劉傳哲;高靜華;;房地產(chǎn)市場(chǎng)風(fēng)險(xiǎn)預(yù)警研究方法綜述[J];中國(guó)礦業(yè)大學(xué)學(xué)報(bào)(社會(huì)科學(xué)版);2006年01期
8 劉偉,張振國(guó),汪志波;企業(yè)經(jīng)營(yíng)風(fēng)險(xiǎn)預(yù)警指標(biāo)體系與預(yù)警系統(tǒng)模型設(shè)計(jì)[J];科技進(jìn)步與對(duì)策;2005年07期
本文編號(hào)：2435165
本文鏈接：http://sikaile.net/kejilunwen/jiaotonggongchenglunwen/2435165.html
最近更新
教材專(zhuān)著
