本文選題：懸索橋 + 索塔變形��； 參考：《重慶交通大學(xué)》2014年碩士論文

【摘要】：懸索橋作為大跨徑、特大跨徑的常用橋型，被廣大橋梁設(shè)計者經(jīng)常使用。對于重慶地區(qū)，由于具有良好的地質(zhì)構(gòu)造條件，尤其適宜于修建地錨式懸索橋。本文基于對寸灘長江大橋地錨式獨(dú)塔懸索橋投標(biāo)方案的分析和理解，對獨(dú)塔懸索橋的承載力做了一定的計算分析。 首先，本文介紹了懸索橋的發(fā)展歷史和發(fā)展現(xiàn)狀，對比自錨式懸索橋的優(yōu)缺點(diǎn)，，由于施工復(fù)雜，受力不夠明確，因此提出了在重慶地區(qū)席間更加具有優(yōu)勢的地錨式獨(dú)塔懸索橋。 其次，介紹了懸索橋的靜力分析理論，包括彈性理論、撓度理論以及有限位移理論與非線性理論等經(jīng)典的分析理論。 然后，說明了重慶寸灘長江大橋的一些基本情況，大致為重慶寸灘長江大橋的項(xiàng)目建設(shè)背景、工程地理位置、主要技術(shù)標(biāo)準(zhǔn)、工程建設(shè)的必要性和工程建設(shè)目標(biāo)、對招標(biāo)項(xiàng)目所在地區(qū)建設(shè)條件的認(rèn)識、對項(xiàng)目的總體設(shè)計、橋梁方案的設(shè)計，最后以重慶市寸灘長江大橋原獨(dú)塔懸索橋投標(biāo)方案為依托，建立有限元模型，重點(diǎn)分析獨(dú)塔懸索橋在靜載作用下的承載力和變形情況，探究建設(shè)獨(dú)塔懸索橋的合理性。 接著，改變地錨式懸索橋的各項(xiàng)參數(shù)，其對索塔彎矩、主纜軸力、主纜變形、吊桿變形、加勁梁變形會產(chǎn)生影響。本章研究改變懸索橋參數(shù)后對全橋承載力影響，以索塔塔底截面彎矩、邊纜軸力、主纜跨中截面豎向變形為研究對象，分別改變懸索橋垂跨比、高跨比、主塔塔高的情況下，分析比較其對懸索橋承載力影響。 最后，對寸灘長江大橋原地錨式獨(dú)塔懸索橋方案進(jìn)行修正，采用新的參數(shù)進(jìn)行驗(yàn)算分析，得出具有更加合理形態(tài)的獨(dú)塔懸索橋。
[Abstract]:Suspension bridge, as a common bridge type with long span and long span, is often used by bridge designers. For Chongqing area, because of the good geological structure condition, it is especially suitable for the construction of ground anchor suspension bridge. Based on the analysis and understanding of the bidding scheme of the ground-anchored single-tower suspension bridge of the Putan Yangtze River Bridge, the bearing capacity of the single-tower suspension bridge is calculated and analyzed. Firstly, this paper introduces the development history and present situation of suspension bridge, compares the advantages and disadvantages of self-anchored suspension bridge, because the construction is complex, the force is not clear enough, so the ground-anchored single-tower suspension bridge with more advantages in Chongqing area is put forward. Secondly, the static analysis theory of suspension bridge is introduced, including elastic theory, deflection theory, finite displacement theory and nonlinear theory. Then, it explains some basic conditions of the Chongqing Cutan Yangtze River Bridge, which is roughly the background of the project construction, the location of the project, the main technical standards, the necessity of the project construction and the project construction objectives. Based on the understanding of the construction conditions in the area where the bidding project is located, the overall design of the project and the design of the bridge scheme, the finite element model is established on the basis of the bidding scheme of the original single-tower suspension bridge of the Putan Yangtze River Bridge in Chongqing. The bearing capacity and deformation of single tower suspension bridge under static load are analyzed, and the rationality of building single tower suspension bridge is explored. Then, the parameters of the ground anchor suspension bridge are changed, which will affect the bending moment of cable tower, the axial force of the main cable, the deformation of the suspension rod and the deformation of the stiffened beam. In this chapter, the effect of changing the parameters of suspension bridge on the bearing capacity of the whole bridge is studied. Taking the bending moment of the bottom section of the tower, the axial force of the side cable and the vertical deformation of the middle section of the main cable span as the research objects, the vertical span ratio, the height span ratio and the tower height of the suspension bridge are changed respectively. The influence of the bridge on the bearing capacity of suspension bridge is analyzed and compared. Finally, the scheme of standing anchor single tower suspension bridge of Putan Yangtze River Bridge is revised, and the new parameters are used to check and analyze, and a more reasonable form of single tower suspension bridge is obtained.
【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】：2014
【分類號】：U448.25

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本文編號：1935998