本文關(guān)鍵詞：矮塔斜拉橋設(shè)計技術(shù)研究　出處：《長安大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 橋梁工程 矮塔斜拉橋 力學(xué)分析 模態(tài)分析 設(shè)計技術(shù)

【摘要】：矮塔斜拉橋是一種新興結(jié)構(gòu)型式，其受力兼具連續(xù)梁橋和斜拉橋的特點，而又不同于二者。本文希望從如下幾個方面進(jìn)行研究，，充分了解該橋型結(jié)構(gòu)受力性能和技術(shù)特點，對要點、設(shè)計方法和成果應(yīng)用進(jìn)行總結(jié)，為該類型橋梁的設(shè)計技術(shù)總結(jié)經(jīng)驗，推動該橋型結(jié)構(gòu)的發(fā)展，為跨度在100～200米的橋梁提供一種經(jīng)濟(jì)、美觀、受力合理、安全的橋型選擇。 針對其較大剛度的主梁、低矮主塔、較長的無索區(qū)段、斜拉索集中在塔頂通過，塔、梁、索之間的相關(guān)關(guān)系，索塔鞍座區(qū)的受力特點方面進(jìn)行了分析，主要成果有以下幾個方面： 1.通過研究矮塔斜拉橋的受力原理和計算理論，計算出結(jié)構(gòu)的內(nèi)力和變形。同時通過對斜拉橋存在材料非線性影響和結(jié)構(gòu)幾何非線性影響的研究，得出對非線性問題的處理方法。 2.通過有限元程序，對不同主梁剛度、索塔高度、拉索截面積、無索區(qū)分布進(jìn)行了計算分析，得出這些參數(shù)對結(jié)構(gòu)整體剛度和內(nèi)力的影響。 3.通過對矮塔斜拉橋孔徑的布置、結(jié)構(gòu)體系和主梁截面的選擇、索塔的設(shè)計以及斜拉索的設(shè)計方法的研究，給出了具體的取值范圍。 4.采用ANSYS大型分析軟件對該橋索鞍節(jié)段進(jìn)行三維有限元分析，得知了應(yīng)力的變化特點。 5.采用多種結(jié)構(gòu)分析程序?qū)C矮塔斜拉橋結(jié)構(gòu)受力、動力性能進(jìn)行理論分析計算，結(jié)合實體工程設(shè)計分析得出了其剛度匹配、高跨比選擇、斜索區(qū)段長度的合理狀態(tài)； 本文的研究內(nèi)容，對完善矮塔斜拉橋的設(shè)計理論、分析方法以及對橋梁技術(shù)的發(fā)展都有著非常重要的意義。
[Abstract]:The short tower cable - stayed bridge is a kind of emerging structure type , which has the characteristics of continuous beam bridge and cable - stayed bridge , and is different from the two . In this paper , we hope to study from the following aspects to fully understand the mechanical performance and technical characteristics of the bridge type structure , summarize the key points , design methods and achievements application , and provide a bridge type selection with economic , aesthetic , stress and safety for the bridge with the span of 100 - 200 meters for the bridge with the span of 100 - 200 meters . Aiming at the main beam , low main tower and long cable - free section with large rigidity , the relation between the tower top , tower , beam and cable and the stress characteristics of cable tower saddle area are analyzed . The main results are as follows : 1 . The internal force and deformation of the structure are calculated by studying the force principle and the calculation theory of the short tower cable - stayed bridge , and the method of dealing with the nonlinear problem is obtained by studying the nonlinear influence of the material nonlinearity on the cable - stayed bridge and the nonlinear influence of the structure . 2 . Through the finite element program , the stiffness , the height of the cable tower , the cross - sectional area of the cable and the distribution of the cable - free zone are calculated and analyzed , and the influence of these parameters on the overall stiffness and internal force of the structure is obtained . 3 . The design of the cable tower and the design method of the stayed cable are studied by the arrangement of the aperture of the short tower cable - stayed bridge , the selection of the structure system and the section of the main beam , the design of the cable tower and the design method of the stayed cable . 4 . Three - dimensional finite element analysis of the saddle section of the bridge is carried out by using ANSYS large - scale analysis software , and the change characteristics of stress are known . 5 . Theoretical analysis and calculation of the force and dynamic performance of PC short tower cable - stayed bridge are analyzed by various structural analysis programs . The reasonable state of rigidity matching , high - span ratio selection and length of the inclined cable section is obtained by combining the engineering design analysis . The research content of this paper is very important to perfect the design theory , the analysis method and the development of the bridge technology .

【學(xué)位授予單位】：長安大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：U448.27

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 宋軍;王福敏;耿波;胡景;周Z

本文編號：1412900