本文選題：鋼桁-槽型梁組合結(jié)構(gòu)橋　切入點：混凝土　出處：《西南交通大學》2017年碩士論文　論文類型：學位論文

【摘要】：結(jié)合廣佛城際項目佛山西站至廣州南站段,在鎮(zhèn)北村立交路口處立交凈空受線路標高控制,另該段線路走行在城鎮(zhèn)化程度較高的地區(qū),設(shè)計中需考慮城市景觀、降低噪音的要求。經(jīng)多方案比選,采用一孔計算跨徑為50m的鋼桁-槽型梁組合結(jié)構(gòu)橋。針對該結(jié)構(gòu)的構(gòu)造、受力特點開展了一系列的計算、研究工作。本文首先系統(tǒng)地通過工程類比、計算分析等方法擬定鋼桁-槽型梁組合結(jié)構(gòu)主要構(gòu)件和結(jié)構(gòu)尺寸。其次,針對不同的目標,進行了平面桿系有限元分析、空間梁—板單元有限元分析和三維實體單元有限元分析。并進行了車橋耦合動力仿真分析,表明該結(jié)構(gòu)有良好的動力特性。再次,按照剛性節(jié)點承受全部的彎矩剪力,軸力由混凝土弦桿承受的原則進行設(shè)計。并以此為基礎(chǔ)對節(jié)點構(gòu)造方案進行了認真研究,提出了分離式耳板式節(jié)點為推薦方案并進行縮尺節(jié)點模型試驗,驗證了節(jié)點構(gòu)造的可行性。最后,通過對廣佛城際實橋施工工藝的研究,制定了組合桁梁相關(guān)的工藝要求和質(zhì)量控制措施。
[Abstract]:In connection with the section between Foshan West Railway Station and Guangzhou South Railway Station, the clearance at the intersection of Zhenbei Village Interchange is controlled by the line elevation. In addition, this section of the line runs in areas with a higher degree of urbanization, so the urban landscape should be taken into account in the design. Requirements for noise reduction. Through comparison and selection of multiple schemes, a single hole is used to calculate the steel truss-groove beam composite structure bridge with span of 50 m. A series of calculations are carried out according to the structural characteristics of the structure, In this paper, the main components and structural dimensions of steel truss-groove beam composite structure are systematically worked out by means of engineering analogy, calculation and analysis. Secondly, the finite element analysis of plane bar system is carried out for different targets. Space beam-plate element finite element analysis and three-dimensional solid element finite element analysis. The vehicle-bridge coupling dynamic simulation analysis shows that the structure has good dynamic characteristics. Thirdly, according to the rigid joints bear all the moment shear force, The axial force is designed by the principle of bearing the concrete chord. Based on this, the construction scheme of the joint is studied carefully, and the separate ear-plate joint is proposed as the recommended scheme and the model test of the scale joint is carried out. The feasibility of the joint construction is verified. Finally, through the study of the construction technology of the real bridge between Guangfo city, the related technical requirements and quality control measures of the composite truss beam are established.
【學位授予單位】：西南交通大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：U442.5

【參考文獻】

相關(guān)期刊論文 前5條

1 曾紹武;;后河村特大橋軌道平順性仿真分析與研究[J];鐵道運營技術(shù);2013年04期

2 姜長宇;張元文;楊明;;橋梁結(jié)構(gòu)非線性實體有限元建模[J];現(xiàn)代交通技術(shù);2012年01期

3 周凌宇;賀桂超;;大跨度鋼-混凝土組合桁架鐵路橋端節(jié)點模型試驗研究[J];土木工程學報;2012年01期

4 王岐峰,李炎,李萬恒,劉文峰;橋梁自振特性與承載能力分析[J];公路交通科技;2005年11期

5 何畏,李喬;板桁組合結(jié)構(gòu)體系受力特性及計算方法研究[J];中國鐵道科學;2001年05期

，

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