本文關鍵詞： 現澆箱梁 補強 力學 有限元 DPS永凝液 粘貼鋼板　出處：《西安工業(yè)大學》2015年碩士論文　論文類型：學位論文

【摘要】：建國以來,我國交通運輸事業(yè)伴隨著經濟的騰飛而飛速發(fā)展,為公路橋梁建設提供了良好的發(fā)展機遇。在新建橋梁不斷增加的同時,許多現有的鋼筋混凝土橋梁的結構性能發(fā)生了巨大的變化,出現了不同程度的損傷,甚至承載能力已大大降低而逐漸演變成為危橋。將有害橋梁全部重建的思想既不現實,也不科學。如果橋梁基本結構尚可利用,通過綜合經濟技術比較,有時采用加固措施,使橋粱達到設計要求,其使用壽命延長,可以大大節(jié)省工程投資、產生良好的社會和經濟效益。因此,橋梁改造維修加固任務越加繁重,成為當前國內橋梁建設的重要組成部分。本文以中山市東河大橋為主要研究對象,在工程實踐基礎上,通過對混凝土箱梁橋因施工原因導致混凝土強度不足的分析,結合混凝土的物理力學性能和結構構件受力特性,綜合考慮結構使用環(huán)境、使用狀況,分析了在混凝土強度不足情況下橋梁的力學性能,創(chuàng)新性的采用啟用備用束、粘貼鋼板及DPS永凝液增加耐久性加固法組合補強的方案,該過程利用有限元軟件midas對橋梁施工過程進行論證補強加固方案的可行性驗證,后期采用檢測試驗的方式對加固后的橋梁結構進行檢測試驗,檢查其是否能夠滿足正常施工運行的需要。通過對該橋補強方案的研究,為橋梁施工中出現的類似問題總結經驗,提供參考意見。
[Abstract]:Since the founding of the people's Republic of China, with the rapid development of economy, China's transportation industry has provided a good opportunity for highway and bridge construction. The structural performance of many existing reinforced concrete bridges has undergone great changes, resulting in varying degrees of damage, and even the bearing capacity has been greatly reduced and gradually evolved into a dangerous bridge. It is also unscientific. If the basic structure of the bridge is still available, through comprehensive economic and technical comparison, and sometimes by means of strengthening measures, the bridge beam can meet the design requirements, its service life is prolonged, and the project investment can be greatly saved. Therefore, the task of bridge reconstruction, maintenance and reinforcement becomes more and more heavy and becomes an important part of bridge construction in China. This paper takes the Donghe Bridge in Zhongshan City as the main research object, based on the engineering practice, Through the analysis of the concrete strength deficiency caused by the construction of the concrete box girder bridge, combined with the physical and mechanical properties of the concrete and the mechanical characteristics of the structural members, the use environment of the structure and the application condition are considered synthetically. This paper analyzes the mechanical properties of the bridge under the condition of insufficient concrete strength, and innovatively adopts the combination reinforcement method of using the spare beam, sticking steel plate and DPS permanent solidification to increase the durability reinforcement. In this process, the finite element software midas is used to verify the feasibility of the reinforcement scheme in the construction process of the bridge. Check whether the bridge can meet the needs of normal construction operation. Through the study of the bridge reinforcement scheme, summarize the experience of similar problems in the bridge construction, and provide the reference.
【學位授予單位】：西安工業(yè)大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：U445.72

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本文編號：1505421