本文選題：中等跨徑 + 波形鋼腹板組合箱梁　； 參考：《湖南大學》2014年碩士論文

【摘要】：波形鋼腹板組合梁是一種以波形鋼腹板代替?zhèn)鹘y(tǒng)混凝土腹板的鋼混新型組合結(jié)構(gòu)，受力明確，混凝土頂?shù)装蹇箯潯摳拱蹇辜�，既能充分利用鋼與混凝土材料各自優(yōu)勢，同時又有效解決了傳統(tǒng)混凝土橋梁腹板的開裂問題。波形鋼腹板組合箱梁橋與傳統(tǒng)混凝土箱梁橋?qū)Ρ�，大幅度減輕了上部結(jié)構(gòu)重量和下部結(jié)構(gòu)工程量，降低了造價，實現(xiàn)了橋梁的輕型化，提高了結(jié)構(gòu)的穩(wěn)定性、強度及材料的使用率，整座橋梁有較強的美感，是山區(qū)、風景區(qū)較好的橋型選擇。 本文以國家自然科學基金資助項目（編號51278183）、陜西省交通廳科技項目為基礎，依托實際工程，重點研究中等跨徑波形鋼腹板組合梁的關鍵技術和經(jīng)濟性能，為今后波形鋼腹板組合結(jié)構(gòu)橋梁的優(yōu)化設計和實際工程施工提供指南和參考，從而更好的推廣中等跨徑下波形鋼腹板組合梁在我國的應用。 本文的主要工作及結(jié)論有： (1)在查閱大量國內(nèi)外文獻資料基礎上，從跨徑、結(jié)構(gòu)形式、截面形式、施工方法、波形鋼腹板與混凝土翼緣板連接方式等方面總結(jié)了波形鋼腹板組合結(jié)構(gòu)橋梁的發(fā)展歷程，總結(jié)了波形鋼腹板橋梁設計的基本框架和思路。 (2)以一座中等跨徑波形鋼腹板組合箱梁實橋為依托工程，從設計角度對縱橫斷面構(gòu)造、波形鋼腹板與上下翼緣板的連接形式、波形鋼腹板之間的連接形式、預應力體系以及施工方法等方面進行介紹，建立結(jié)構(gòu)單梁模型和梁格模型，分析討論兩類模型的受力差別，并與部頒混凝土箱梁進行技術經(jīng)濟效益方面的對比。結(jié)果表明：中等跨徑下，波形鋼腹板組合箱梁在技術經(jīng)濟性能方面較常規(guī)預應力混凝土箱梁有較大優(yōu)勢。 (3)針對現(xiàn)階段國內(nèi)外對波形鋼腹板組合T梁的研究現(xiàn)狀，，從設計角度對波形鋼腹板組合T梁提出一種新思路，利用有限元軟件對波形鋼腹板組合T梁設計方案進行建模計算，通過在受力、施工、經(jīng)濟等多方面與混凝土連續(xù)T梁橋進行對比，分析探討中等跨徑下波形鋼腹板組合T梁這一新橋型推廣應用的可行性。結(jié)果表明：與混凝土T梁相比，波形鋼腹板組合T梁在中等跨徑下具有較大的技術經(jīng)濟優(yōu)勢，可以推廣應用，也為我國的波形鋼腹板橋梁設計和發(fā)展做出有益嘗試。
[Abstract]:The composite beam with corrugated steel web is a new type of steel-concrete composite structure, which uses corrugated steel web instead of the traditional concrete web. The concrete top and bottom slab is bending and the steel web plate is shear-resistant, which can make full use of the respective advantages of steel and concrete materials. At the same time, it effectively solves the cracking problem of traditional concrete bridge web. Compared with the traditional concrete box girder bridge, the composite box girder bridge with corrugated steel webs greatly reduces the superstructure weight and the construction quantity of the substructure, reduces the cost, realizes the lightening of the bridge, and improves the stability of the structure. The strength and material utilization rate, the whole bridge has the strong esthetic feeling, is the mountain area, the scenic spot better bridge choice. Based on the project funded by the National Natural Science Foundation of China (No. 51278183) and the Science and Technology Project of Shaanxi Provincial Communications Department, this paper focuses on the key technical and economic performance of the medium-span corrugated steel web composite beam based on the actual project. It provides a guide and reference for the optimization design and practical engineering construction of the corrugated steel web composite structure bridge in the future, so as to better popularize the application of the waveform steel web composite beam with medium span in our country. The main work and conclusions of this paper are as follows: 1) on the basis of consulting a large number of domestic and foreign documents, this paper summarizes the development course of corrugated steel web composite structure bridge from the aspects of span, structure form, section form, construction method, connection mode between corrugated steel web plate and concrete flange plate, etc. The basic frame and train of thought of the design of corrugated steel web bridge are summarized. Based on a solid bridge with medium span corrugated steel webs, the structure of longitudinal and horizontal sections, the connection form between corrugated steel webs and upper and lower flange plates, and the form of connection between corrugated steel web plates are discussed from the design point of view. The prestressing system and construction method are introduced, the single beam model and the girder lattice model of the structure are established, the difference between the two models is analyzed and discussed, and the technical and economic benefits of the two models are compared with those of the concrete box girder issued by the Ministry. The results show that the composite box girder with corrugated steel web has more advantages than conventional prestressed concrete box girder in technical and economic performance under medium span. 3) in view of the present situation of the research on the waveform steel web composite T beam at home and abroad, a new idea is put forward for the waveform steel web composite T beam from the design point of view, and the design scheme of the waveform steel web composite T beam is modeled and calculated by using the finite element software. By comparing with concrete continuous T-beam bridge in the aspects of force, construction and economy, the feasibility of popularization and application of this new bridge type is analyzed and discussed in this paper. The results show that, compared with concrete T-beams, composite T-beams with corrugated steel webs have great technical and economic advantages under the middle span, which can be popularized and applied, and also make a beneficial attempt for the design and development of corrugated steel web bridges in China.
【學位授予單位】：湖南大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：U448.213

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