獨塔斜拉—剛構組合體系橋結構行為研究
發(fā)布時間：2018-10-07 20:57
【摘要】：隨著社會經濟和交通事業(yè)的迅猛發(fā)展,出現了各種各樣的橋型,獨塔斜拉-剛構組合體系橋就是其中之一。獨塔斜拉橋與剛構的協(xié)調體系以其優(yōu)美的造型,結構的新穎以及出色的跨越能力,越來越多地作為標志性建筑出現在人們的視野當中。在獨塔斜拉-剛構組合體系橋的結構行為跟傳統(tǒng)的獨塔斜拉橋和剛構橋有什么異同點呢?目前對該類橋型的結構行為及受力特性雖然有所研究,但是還有很多問題有待解決。本文研究內容如下：1、針對炳草崗金沙江大橋工程實例,采用MIDAS/CIVIL有限元分析軟件建立空間模型進行分析研究結構內力及變形特點,并結合獨塔斜拉橋和剛構橋的結構行為及受力特點,對比得出獨塔斜拉-剛構組合體系橋的優(yōu)缺點。2、通過控制變量法分別改變獨塔斜拉-剛構組合體系橋的T構的剛度、輔助墩的設置與否以及位置情況、主跨無索區(qū)長度和結構整體對稱性等幾個參數來研究各個參數對結構的內力和位移的影響情況。3、總結影響傳統(tǒng)斜拉橋和剛構橋的施工工藝主要參數偏差,通過控制變量法將這些參數應用到斜拉-剛構橋中,來對斜拉-剛構橋施工過程中的工藝參數偏差進行敏感性分析。4、結合對炳草崗金沙江大橋所做的荷載試驗結果來檢驗不對稱獨塔斜拉-剛構橋在長期運營狀態(tài)下的結構響應狀態(tài),并對前面所做的結構行為研究進行驗證,同時為以后此類橋的荷載試驗提供建議。
[Abstract]:With the rapid development of social economy and transportation, there are many kinds of bridges, one of which is single tower cable-stayed rigid frame composite bridge. The coordination system of single tower cable-stayed bridge and rigid frame is more and more used as a landmark building for its beautiful shape, novel structure and excellent leapfrogging ability. What is the difference between the structure behavior of single tower cable-stayed and rigid frame composite bridge and traditional single-tower cable-stayed bridge and rigid frame bridge? Although the structural behavior and mechanical characteristics of this type of bridge have been studied, there are still many problems to be solved. The research contents of this paper are as follows: 1. In view of the engineering example of Bingcaogang Jinsha River Bridge, the spatial model is established by using MIDAS/CIVIL finite element analysis software to analyze and study the characteristics of internal force and deformation of the structure. Combined with the structural behavior and stress characteristics of single tower cable-stayed bridge and rigid frame bridge, the merits and demerits of single-tower cable-stayed rigid-frame composite bridge are obtained. The stiffness of T-frame of single-tower cable-stayed rigid frame composite bridge is changed by controlling variable method, respectively. Whether the auxiliary piers are installed or not, and the position of the auxiliary piers, Several parameters, such as the length of the cable free zone of the main span and the overall symmetry of the structure, are used to study the influence of each parameter on the internal force and displacement of the structure. The main parameters deviation of the construction process affecting the traditional cable-stayed bridge and rigid frame bridge is summarized. These parameters are applied to the cable-stayed rigid frame bridge by the control variable method. The sensitivity analysis of the process parameter deviation during the construction of the cable-stayed rigid frame bridge was carried out. 4. Combined with the load test results of Bingcaogang Jinsha River Bridge, the asymmetric single-tower cable-stayed rigid frame bridge was tested under the long-term operation condition. The structural response state of, The structural behavior of the bridge is verified and some suggestions are provided for the load test of the bridge in the future.
【學位授予單位】：西南交通大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：U441
本文編號：2255646
[Abstract]:With the rapid development of social economy and transportation, there are many kinds of bridges, one of which is single tower cable-stayed rigid frame composite bridge. The coordination system of single tower cable-stayed bridge and rigid frame is more and more used as a landmark building for its beautiful shape, novel structure and excellent leapfrogging ability. What is the difference between the structure behavior of single tower cable-stayed and rigid frame composite bridge and traditional single-tower cable-stayed bridge and rigid frame bridge? Although the structural behavior and mechanical characteristics of this type of bridge have been studied, there are still many problems to be solved. The research contents of this paper are as follows: 1. In view of the engineering example of Bingcaogang Jinsha River Bridge, the spatial model is established by using MIDAS/CIVIL finite element analysis software to analyze and study the characteristics of internal force and deformation of the structure. Combined with the structural behavior and stress characteristics of single tower cable-stayed bridge and rigid frame bridge, the merits and demerits of single-tower cable-stayed rigid-frame composite bridge are obtained. The stiffness of T-frame of single-tower cable-stayed rigid frame composite bridge is changed by controlling variable method, respectively. Whether the auxiliary piers are installed or not, and the position of the auxiliary piers, Several parameters, such as the length of the cable free zone of the main span and the overall symmetry of the structure, are used to study the influence of each parameter on the internal force and displacement of the structure. The main parameters deviation of the construction process affecting the traditional cable-stayed bridge and rigid frame bridge is summarized. These parameters are applied to the cable-stayed rigid frame bridge by the control variable method. The sensitivity analysis of the process parameter deviation during the construction of the cable-stayed rigid frame bridge was carried out. 4. Combined with the load test results of Bingcaogang Jinsha River Bridge, the asymmetric single-tower cable-stayed rigid frame bridge was tested under the long-term operation condition. The structural response state of, The structural behavior of the bridge is verified and some suggestions are provided for the load test of the bridge in the future.
【學位授予單位】：西南交通大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：U441
【引證文獻】
相關期刊論文 前1條
1 趙曉晉;賀拴海;白鷺濤;朱釗;;雙塔斜拉-連續(xù)梁組合體系的力學行為分析[J];深圳大學學報(理工版);2016年05期
，本文編號：2255646
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