本文選題：剛架拱橋 + 病害�。� 參考：《武漢理工大學》2014年碩士論文

【摘要】：鋼筋混凝土剛架拱橋在我國最先由交通運輸部公路科學研究院提出，1978年在江蘇無錫建成我國第一座剛架拱橋。剛架拱橋綜合了雙曲拱、桁架拱、肋拱和斜腿剛構(gòu)等橋型的特點，屬于有推力的高次超靜定結(jié)構(gòu)，主要由剛架拱片、橫系梁、橋面板和下部結(jié)構(gòu)等構(gòu)成。剛架拱橋以其自重輕、受力性能好、造價便宜、造型美觀等優(yōu)點在我國得以廣泛推廣。特別是1983年《鋼筋混凝土剛架拱橋定型設(shè)計圖》的推出，使得該橋型的修建更為流行。剛架拱橋在服役過程中，產(chǎn)生了一些病害，影響了橋梁的正常使用。一些剛架拱橋甚至建成運營十幾年，就成了危橋。剛架拱橋病害的產(chǎn)生是多方面的，，有橋梁設(shè)計規(guī)范的更新、橋梁計算理論的創(chuàng)新而導致橋梁使用環(huán)境的變化而導致的橋梁結(jié)構(gòu)性能降低，從而產(chǎn)生病害；有橋梁施工時的質(zhì)量因素、后期運營過程中的養(yǎng)護管理不善引起的病害；也有環(huán)境作用、時間累積導致橋梁結(jié)構(gòu)出現(xiàn)疲勞損傷而導致的病害。我們需要正確看待剛架拱橋病害的存在，理性分析病害產(chǎn)生的原因，了解在役剛架拱橋的使用性能，盡力延續(xù)其使用壽命，并根據(jù)分析結(jié)果優(yōu)化新建剛架拱橋結(jié)構(gòu)。 本文介紹了剛架拱橋的構(gòu)造特點和常見病害；以典型剛架拱橋為對象，從理論角度分析了橋梁設(shè)計規(guī)范變更對在役剛架拱橋使用性能的影響，驗算分析結(jié)果表明：設(shè)計規(guī)范變更導致典型剛架拱橋的極限狀態(tài)承載能力、裂縫寬度、橋面板應力狀態(tài)均出現(xiàn)不滿足要求的情況；對于大量的在役剛架拱橋，本文詳述了剛架拱橋使用性能的檢測方法和過程；基于現(xiàn)場檢測結(jié)果，分別運用橋梁結(jié)構(gòu)技術(shù)狀況評定法、基于設(shè)計規(guī)范的評定方法和荷載試驗法對其使用性能進行評定，并綜合各種評定方法的結(jié)果對橋梁的使用性能做出綜合評定。 本文的研究內(nèi)容為剛架拱橋常見病害的出現(xiàn)提供了理論依據(jù)，有助于對剛架拱橋進行針對性的檢查和專項檢測，以確認病害的嚴重程度和發(fā)展趨勢，為在役剛架拱橋的養(yǎng)護管理、加固改造或是否需拆除重建提供參考，同時可為新建剛架拱橋的結(jié)構(gòu)優(yōu)化改造提供借鑒。
[Abstract]:The reinforced concrete rigid-frame arch bridge was first put forward by the Research Institute of Highway Science of the Ministry of Transport in China, and the first rigid-frame arch bridge was built in Wuxi, Jiangsu Province in 1978. Rigid-frame arch bridge combines the characteristics of hyperbolic arch, truss arch, rib arch and oblique leg rigid frame, and belongs to the high-order statically indeterminate structure with thrust, which is mainly composed of rigid frame arch, transverse beam, deck slab and substructure. Rigid-frame arch bridge is widely popularized in our country with its advantages of light weight, good mechanical performance, low cost and beautiful shape. In particular, the introduction of the reinforced concrete rigid arch bridge design drawing in 1983 makes the construction of the bridge more popular. During the service of rigid arch bridge, some diseases occurred, which affected the normal use of bridge. Some rigid arch bridges have even been built and operated for more than ten years, and have become dangerous bridges. The damage of rigid arch bridge is caused by many aspects, such as the renewal of bridge design code, the innovation of bridge calculation theory, which results in the deterioration of the performance of bridge structure due to the change of bridge operating environment. There are the quality factors in the construction of bridges, the diseases caused by poor maintenance and management in the later period of operation, and the damage caused by fatigue damage caused by the accumulation of time. We need to correctly treat the existence of diseases of rigid arch bridges, rationally analyze the causes of these diseases, understand the performance of existing rigid arch bridges, try our best to extend their service life, and optimize the structure of newly built rigid arch bridges according to the analysis results. This paper introduces the structural characteristics and common diseases of the rigid frame arch bridge, taking the typical rigid frame arch bridge as an example, analyzes the influence of the change of the design code of the bridge on the service performance of the rigid frame arch bridge from a theoretical point of view. The results of checking calculation and analysis show that the limit state bearing capacity, crack width and deck stress state of a typical rigid-frame arch bridge are not satisfied due to the change of design code, and for a large number of in-service rigid arch bridges, a large number of in-service rigid-frame arch bridges are not satisfied. In this paper, the testing method and process of the performance of rigid frame arch bridge are described in detail, and based on the field test results, the evaluation method of bridge structure technical condition, the evaluation method based on design code and the load test method are used to evaluate the performance of the bridge. The performance of the bridge is evaluated synthetically by synthesizing the results of all kinds of evaluation methods. The research content of this paper provides the theoretical basis for the occurrence of common diseases of rigid arch bridge, and is helpful for the inspection and special detection of rigid arch bridge, in order to confirm the severity and development trend of the disease. It provides a reference for the maintenance management, reinforcement and reconstruction of the existing rigid arch bridge, as well as for the structural optimization and reconstruction of the new rigid frame arch bridge.
【學位授予單位】：武漢理工大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：U448.22;U446

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相關(guān)期刊論文 前2條

1 袁銅森,方志,胡柏學,肖友明,肖衛(wèi)今;剛架拱橋的典型病害診斷分析與加固[J];中南公路工程;2005年03期

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