在役預應力混凝土連續(xù)箱梁橋管養(yǎng)決策系統(tǒng)研發(fā)
發(fā)布時間：2018-07-14 10:47
【摘要】：目前,對于在役預應力混凝土梁橋的安全評估這方面的研究還存在很多的不足。例如,在研究對象上,研究者大多數(shù)選用普通鋼筋混凝土橋梁作為研究對象,對在役預應力混凝土梁橋的研究很少,另外在研究在役預應力混凝土梁橋的安全評估時,只是簡單的運用一種安全評估方法來對該橋梁進行安全評估,致使結果不夠準確,造成管養(yǎng)單位很難對該橋做出合理的維養(yǎng)決策。本文工作主要體現(xiàn)在以下幾個方面:①開發(fā)在役預應力混凝土梁橋的病害數(shù)據庫。根據建設單位的基本資料,將相應的橋梁基本信息錄入數(shù)據庫,再根據檢測單位的外觀檢測、專項檢測、結構驗算、靜動載試驗、安全評估等級以及養(yǎng)護建議錄入數(shù)據庫,讓人能更直觀的看到橋梁的病害數(shù)據。②編制在役預應力混凝土連續(xù)箱梁橋安全評估程序。本文主要應用了三種安全評估方法:靜載試驗安全評估方法、可靠度評估方法、規(guī)范評估方法來編制分析程序,并與數(shù)據庫結合形成管養(yǎng)系統(tǒng),可根據橋梁病害情況,確定相關參數(shù),進而能較快對橋梁進行安全評估。③對在役預應力混凝土連續(xù)箱梁橋各時期的病害情況進行對比,并嘗試預測病害發(fā)展趨勢。將檢測單位近年來所檢測的病害信息進行對比,分析哪些是新的病害,建立數(shù)據庫,并根據檢測回來的數(shù)據,從混凝土裂縫、梁體下?lián)稀摻钿P蝕等因素,結合建模分析,并嘗試預測病害發(fā)展趨勢。④選取重慶某在役預應力混凝土連續(xù)箱梁橋,將病害及養(yǎng)護建議等錄入病害數(shù)據庫;再根據以上三種安全評估方法同時對該橋進行安全評估,進行界面操作,得出該橋的評估結果等。
[Abstract]:At present, there are still a lot of shortcomings in the research on the safety assessment of in-service prestressed concrete beam bridges. For example, on the object of study, most of the researchers choose ordinary reinforced concrete bridges as research objects, few research on in-service prestressed concrete beam bridges, and the study of existing prestressed concrete beam bridges. In the whole evaluation, a safety assessment method is simply used to evaluate the bridge, which results in the inaccuracy of the results, which makes it difficult for the management units to make a reasonable maintenance decision for the bridge. The basic information of the position, the basic information of the bridge into the database, and then according to the inspection unit's appearance inspection, special inspection, structural checking, static and dynamic load test, safety assessment grade and maintenance proposal into the database, so that people can see the number of bridge disease more intuitively. Secondly, the safety of the prestressed concrete continuous box girder bridge is developed. Three kinds of safety assessment methods are used in this paper: the safety assessment method of the static load test, the reliability evaluation method, the standard evaluation method to compile the analysis program, and combine with the database to form the management system. According to the disease of the bridge, the relevant parameters can be determined, and then the safety assessment of the bridge can be faster. 3. The disease situation of the continuous box girder bridge of stress concrete is compared, and the trend of disease development is tried to predict. The disease information detected by the detection unit in recent years is compared, which are new diseases, the database is set up, and the factors such as the concrete cracks, the beam body deflection and the reinforcement corrosion are combined according to the detected data. Model analysis, and try to predict the trend of disease development. (4) select an active prestressed concrete continuous box girder bridge in Chongqing, and put the disease and maintenance advice into the disease database. Then according to the above three safety assessment methods, the bridge is evaluated at the same time, the interface operation is carried out, and the evaluation results of the bridge are obtained.
【學位授予單位】：重慶交通大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：U445.7
本文編號：2121401
[Abstract]:At present, there are still a lot of shortcomings in the research on the safety assessment of in-service prestressed concrete beam bridges. For example, on the object of study, most of the researchers choose ordinary reinforced concrete bridges as research objects, few research on in-service prestressed concrete beam bridges, and the study of existing prestressed concrete beam bridges. In the whole evaluation, a safety assessment method is simply used to evaluate the bridge, which results in the inaccuracy of the results, which makes it difficult for the management units to make a reasonable maintenance decision for the bridge. The basic information of the position, the basic information of the bridge into the database, and then according to the inspection unit's appearance inspection, special inspection, structural checking, static and dynamic load test, safety assessment grade and maintenance proposal into the database, so that people can see the number of bridge disease more intuitively. Secondly, the safety of the prestressed concrete continuous box girder bridge is developed. Three kinds of safety assessment methods are used in this paper: the safety assessment method of the static load test, the reliability evaluation method, the standard evaluation method to compile the analysis program, and combine with the database to form the management system. According to the disease of the bridge, the relevant parameters can be determined, and then the safety assessment of the bridge can be faster. 3. The disease situation of the continuous box girder bridge of stress concrete is compared, and the trend of disease development is tried to predict. The disease information detected by the detection unit in recent years is compared, which are new diseases, the database is set up, and the factors such as the concrete cracks, the beam body deflection and the reinforcement corrosion are combined according to the detected data. Model analysis, and try to predict the trend of disease development. (4) select an active prestressed concrete continuous box girder bridge in Chongqing, and put the disease and maintenance advice into the disease database. Then according to the above three safety assessment methods, the bridge is evaluated at the same time, the interface operation is carried out, and the evaluation results of the bridge are obtained.
【學位授予單位】：重慶交通大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：U445.7
【參考文獻】
相關期刊論文 前1條
1 蔣冬蕾,應國剛;預應力混凝土箱梁主要裂縫成因和防治措施的探討[J];寧波高等�？茖W校學報;2004年02期
，本文編號：2121401
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