本文選題：空心板 + 粘錨鋼橫梁加固法�。� 參考：《重慶交通大學》2014年碩士論文

【摘要】：近幾十年來，我國橋梁事業(yè)取得高速發(fā)展，其中空心板橋數(shù)量占據(jù)較大比重。由于設(shè)計不合理、施工工藝缺陷以及橋梁運營期間管理不善、氣候惡劣等因素作用，空心板橋出現(xiàn)了不同程度的病害及損傷。對危舊空心板橋進行加固維修，以恢復或提高其承載能力和通行能力，保證其正常運營，延長其使用壽命高是非常有必要的。構(gòu)建出一套科學、完整的評估體系，針對加固后空心板橋技術(shù)狀況進行全面評價已越來越多的引起相關(guān)專家學者的關(guān)注。 本文針對課題組提出的粘錨鋼橫梁法空心板加固技術(shù)這一頗具應(yīng)用前景的加固方法對空心板加固后評價展開以下研究。 首先，在分析空心板鉸鉸縫構(gòu)造形式以及病害特征、研究鉸縫破壞機理及空心板其他病害成因的基礎(chǔ)之上，探討總結(jié)了粘錨鋼橫梁法空心板加固技術(shù)的原理、方法及特點。 其次，闡述了灰色聚類理論的基本概念、研究發(fā)展情況以及應(yīng)用現(xiàn)狀，介紹了灰色關(guān)聯(lián)聚類法以及灰色白化權(quán)聚類法兩種灰色聚類評價理論中主要評價方法的基本定義和計算方法，結(jié)合德爾菲專家評分法，在項目后評價成功度法的基礎(chǔ)上提出了粘錨鋼橫梁法空心板加固成功度后評價法。 再次，，將以上理論、方法作為支撐，展開粘錨鋼橫梁加固空心板后評價體系指標模型構(gòu)建的研究。通過理論分析、借鑒既有規(guī)范以及相關(guān)專家經(jīng)驗，分別從安全性、耐久性、動力適用性以及經(jīng)濟性四個角度提出并研究了加固后評價相關(guān)指標模型，并給出了粘錨鋼橫梁法加固空心板成功度模型評價步驟。再分別對各指標計算方法及灰類劃分標準進行研究分析，成功建立起了一套粘錨鋼橫梁法空心板橋加固后指標評價體系。 最后，基于以上分析，結(jié)合粘錨鋼橫梁法加固實際空心板實例，通過有限元模型計算、數(shù)值模擬、以及相關(guān)專家評分，得出模擬加固前后數(shù)據(jù)，并嚴格按照評價模型計算步驟對粘錨鋼橫梁法加固空心板后評價體系進行了應(yīng)用示范。 論文的研究對客觀科學評價空心板橋加固后綜合狀態(tài)提供了理論依據(jù)以及應(yīng)用指導，有利于不斷提高決策、設(shè)計、施工、管理水平，具有較強的實用價值和廣闊的應(yīng)用前景。
[Abstract]:In recent decades, China's bridge industry has made rapid development, in which the number of hollow slab bridge accounts for a large proportion. Due to unreasonable design, defects of construction technology, poor management of bridges during operation and bad weather, the hollow slab bridges have been damaged and damaged to different degrees. It is necessary to reinforce and maintain the old hollow slab bridge in order to restore or improve its carrying capacity and traffic capacity, to ensure its normal operation and to prolong its service life. A set of scientific and complete evaluation system has been set up to evaluate the technical condition of reinforced hollow slab bridge which has attracted more and more attention of relevant experts and scholars. In this paper, the following research is carried out on the post-reinforcement evaluation of hollow slabs, which is a promising reinforcement method proposed by the research group. Firstly, on the basis of analyzing the structural form and disease characteristics of hinged joints of hollow slabs, studying the failure mechanism of hinged joints and the causes of other diseases of hollow slabs, the principle, method and characteristics of hollow slabs reinforced with steel beams with sticking anchor are discussed. Secondly, the basic concept of grey clustering theory, the development of research and the current situation of its application are expounded. This paper introduces the basic definitions and calculation methods of the main evaluation methods in grey correlation clustering and grey whitening weight clustering, combined with Delphi expert scoring method. Based on the method of project post-evaluation success, the method of post-evaluation of the degree of success in reinforcement of hollow slabs with viscous anchor steel beams is put forward. Thirdly, taking the above theory and method as the support, the research on the index model of the evaluation system after reinforcing hollow slabs with steel beams is carried out. Through theoretical analysis and drawing lessons from the existing norms and relevant expert experience, this paper puts forward and studies the relevant index model of post-reinforcement evaluation from the aspects of safety, durability, dynamic applicability and economy, respectively. The evaluation steps of success model for reinforcing hollow slabs with steel beams with stick anchor are given. Then the calculation methods of each index and the standard of ash classification are studied and analyzed respectively, and a set of evaluation system of index after reinforcement of hollow slab bridge with viscous anchor steel beam method is established successfully. Finally, based on the above analysis, combined with the practical example of reinforcing hollow slabs by the method of viscous anchor steel crossbeam, through the finite element model calculation, numerical simulation, and relevant expert score, the data before and after the simulation reinforcement are obtained. The application demonstration of the post-evaluation system for reinforcing hollow slabs with the method of viscous anchor steel crossbeam is demonstrated strictly according to the calculation steps of the evaluation model. The research in this paper provides theoretical basis and application guidance for objective and scientific evaluation of comprehensive state of hollow slab bridge after reinforcement. It is beneficial to continuously improve the level of decision, design, construction and management, and has strong practical value and broad application prospect.
【學位授予單位】：重慶交通大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：U445.72

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