本文選題：600m級鋼筋混凝土拱橋 + 矢跨比��； 參考：《重慶交通大學(xué)》2015年碩士論文

【摘要】：鋼筋混凝土拱橋剛度大、承載能力高、抗震性能好、后期維護(hù)費(fèi)用低,與周圍環(huán)境協(xié)調(diào),歷來受到工程師的重視和推崇。但受到施工技術(shù)的限制,一直制約著混凝土拱橋朝更大跨度的發(fā)展。上世紀(jì)末,國外提出600m級的超大跨徑混凝土拱橋設(shè)計(jì)方案,隨后日本、中國也開展了600m-1000m級超大跨徑混凝土拱橋的試設(shè)計(jì)。對于超大跨徑混凝土拱橋,主拱圈構(gòu)造與拱上立柱布置直接關(guān)系到結(jié)構(gòu)構(gòu)造、靜動(dòng)力特性和施工方法。為此,本文開展以下研究工作:1)收集、整理國內(nèi)外超大跨徑混凝土拱橋關(guān)于矢跨比、拱軸系數(shù)、主拱截面形式與尺寸、拱上建筑構(gòu)造與布置形式等參考數(shù)據(jù),為600m級鋼筋混凝土拱橋主拱圈及拱上建筑設(shè)計(jì)參數(shù)的研究提供借鑒和對比分析。2)利用有限元軟件ANSYS,對600m級鋼筋混凝土拱橋的主拱截面、矢跨比、拱軸系數(shù)進(jìn)行研究,分析其對主拱受力、穩(wěn)定、位移的影響規(guī)律,在此基礎(chǔ)上獲取設(shè)計(jì)參數(shù)的合理取值范圍。3)選擇T構(gòu)+剛構(gòu)+連續(xù)梁的拱上立柱形式,研究600m級鋼筋混凝土拱橋的腹孔跨徑、立柱與主梁連接方式,分析不同腹孔跨徑、不同立柱與主梁連接方式對主拱、立柱的影響規(guī)律,并獲取設(shè)計(jì)參數(shù)的合理取值范圍。4)針對600m級鋼筋混凝土拱橋的受力規(guī)律,利用APDL語言編寫了拱軸線優(yōu)化命令流,實(shí)現(xiàn)偏心距最大值最小、偏心距最大值在拱腳截面的優(yōu)化拱軸系數(shù)方法。
[Abstract]:Reinforced concrete arch bridge has the advantages of large stiffness, high bearing capacity, good seismic performance, low maintenance cost in the later period, and coordination with the surrounding environment, which has always been valued and respected by engineers. However, limited by construction technology, concrete arch bridge has been restricting the development of a larger span. At the end of last century, foreign countries put forward the design scheme of 600m super-span concrete arch bridge, and then Japan and China also carried out the trial design of 600m-1000m class super-span concrete arch bridge. For super-span concrete arch bridge, the main arch ring structure and the arrangement of the column on the arch are directly related to the structure, static and dynamic characteristics and construction method. Therefore, the following research work is carried out in this paper: (1) to collect and organize the reference data of oversized span concrete arch bridges at home and abroad, such as the rise-span ratio, arch axis coefficient, the form and size of main arch section, the construction and layout of arch structures, etc. To provide reference and comparative analysis for the study of the design parameters of the main arch ring of 600m reinforced concrete arch bridge and its upper arch. 2) using the finite element software ANSYS, the main arch section, rise-span ratio and arch axis coefficient of the 600m reinforced concrete arch bridge are studied, and the main arch section, the rise-span ratio and the arch axis coefficient of the 600m reinforced concrete arch bridge are studied. Based on the analysis of its influence on the force, stability and displacement of the main arch, the reasonable value range of design parameters. 3) selecting the arch column form of the T-frame rigid frame continuous beam, and studying the abdominal span of 600m reinforced concrete arch bridge. The connection mode between column and main beam, the influence law of different span of abdomen hole, different connecting mode of column and main beam on main arch and column, and the reasonable value range of design parameter. 4) aiming at the force law of 600m grade reinforced concrete arch bridge, the connection mode of column and main beam is analyzed, and the influence law of different connecting mode of column and main beam on main arch bridge and column is obtained. The APDL language is used to compile the optimal command flow of the arch axis, which realizes the maximum eccentricity and the maximum eccentricity in the arch foot section.
【學(xué)位授予單位】：重慶交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：U448.22

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本文編號：1972975