某独塔双索面斜拉桥的合理成桥状态研究及施工阶段分析
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摘要
为了研究江西省某独塔双索面斜拉桥的合理成桥状态,首先利用有限元软件MIDAS/CIVIL建立有限元模型,然后分别利用最小弯曲能量法、弯矩最小法和影响矩阵法对该桥的最终成桥状态进行了计算。基于得到的合理成桥状态提出了该斜拉桥的施工方法和施工顺序。最后利用正装迭代法进行了分析,结果表明该计算得到的合理施工状态索力均小于桥梁设计索力,误差均在3%以内,合理成桥状态的索力与设计索力分布规律基本一致,且合理成桥状态对应的桥梁线形最大挠度为21. 87 mm,满足规范要求。
In order to study the reasonable bridge state of a single tower double cable-stayed cable-stayed bridge in Jiangxi Province,this paper firstly uses the finite element software MIDAS/CIVIL to establish the finite element model,and then uses the minimum bending energy method,the bending moment minimum method and the influence matrix method respectively. The final bridged state of the bridge was calculated. Based on the obtained reasonable bridge state,the construction method and construction sequence of the cable-stayed bridge are proposed. Finally,the paper is analyzed by the formal iteration method. The results show that the cable force of the reasonable construction state calculated in this paper is less than the cable force of the bridge design,the error is within 3%,and the cable force of the reasonable bridge state and the distribution of the cable force of the design. Basically consistent. In addition,the maximum deflection of the bridge line corresponding to the reasonable bridge state is 21. 87 mm,which meets the requirements of the specification.
In order to study the reasonable bridge state of a single tower double cable-stayed cable-stayed bridge in Jiangxi Province,this paper firstly uses the finite element software MIDAS/CIVIL to establish the finite element model,and then uses the minimum bending energy method,the bending moment minimum method and the influence matrix method respectively. The final bridged state of the bridge was calculated. Based on the obtained reasonable bridge state,the construction method and construction sequence of the cable-stayed bridge are proposed. Finally,the paper is analyzed by the formal iteration method. The results show that the cable force of the reasonable construction state calculated in this paper is less than the cable force of the bridge design,the error is within 3%,and the cable force of the reasonable bridge state and the distribution of the cable force of the design. Basically consistent. In addition,the maximum deflection of the bridge line corresponding to the reasonable bridge state is 21. 87 mm,which meets the requirements of the specification.
引文
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[16]邱国阳.基于改进模糊综合评估法大跨斜拉桥评估研究[J].湖南安通科技,2017,43(3):135-138.
[2]陈志军,刘洋,杨立飞,等.基于粒子群优化算法的独塔斜拉桥成桥索力优化[J].桥梁建设,2016,46(3):40-44.
[3] Wang H,Mao J X,Huang J H,et al. Modal Identification of Sutong Cable-Stayed Bridge during Typhoon Haikui Using Wavelet Transform Method[J]. Journal of Performance of Constructed Facilities,2016,30(5):04016001.
[4]车小林,杜斌,张兴,等.钢筋混凝土系杆拱桥成桥吊杆索力确定方法对比分析研究[J].施工技术,2018(14).
[5]张可心,孙全胜.拉索损伤对斜拉桥静力性能影响分析[J].公路工程,2016,41(3):35-39.
[6]宋涛,宋一凡,贺拴海,等.矮塔斜拉桥竖弯频率的能量法估算实用公式[J].北京工业大学学报,2016,42(4):521-526.
[7]张文学,寇文琦,陈盈,等.基于能量法的斜拉桥纵向1阶自振周期简化计算[J].中国公路学报,2017,30(7):50-57.
[8]邓青儿,于洋,汤岳飞.大跨径钢—混凝土组合梁在老桥改建中的应用[J].桥梁建设,2016,46(1):59-64.
[9]王彬力.高陡边坡下桥梁桩基受力与防护设计探析[J].公路工程,2018(1).
[10] Wang R,Xu Y,Li J. Transverse Seismic Behavior Studies of a Medium Span Cable-Stayed Bridge Model with Two Concrete Towers[J]. Journal of Earthquake Engineering,2016,21(1):151-168.
[11]康厚军,苏潇阳,龚平,等.漂浮式独塔斜拉桥竖弯刚度评估新方法[J].湖南大学学报(自科版),2017,44(11):126-134.
[12] Wei H E,Guo X,Zou Y,et al. Effect of wind barrier porosity on coupled vibration of train-bridge system for long-span cable-stayed bridge in crosswind[J]. Journal of Central South University,2016.
[13]吴朴,邹黎琼.无应力长度参数正装迭代法工程应用[J].中外公路,2018(2).
[14]王宜兵.斜拉桥二次调索计算及测试研究[J].公路,2016(5):79-81.
[15]施文彬,颜东煌,许红胜,等.大跨度板桁结合斜拉桥施工阶段温差效应研究[J].交通科学与工程,2017,33(2):37-42.
[16]邱国阳.基于改进模糊综合评估法大跨斜拉桥评估研究[J].湖南安通科技,2017,43(3):135-138.