某市政钢桁架桥吊装施工工艺及施工稳定性验算
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摘要
基于浙江某市政钢桁架桥的吊装施工,结合本桥特点,经对比选择分条安装法作为其施工工艺。然后基于理论计算对吊装工艺进行了详细分析和稳定性计算。利用有限元软件Midas/Civil 2015对环片及钢管应力进行仿真计算,发现部分钢管无法满足荷载要求,通过变更设计进行调整,对调整后的施工方案进行了稳定性、强度和挠度等多角度的计算,结果表明本吊装施工方案可满足规范与设计要求,证明了该方案的可行性。
This paper is based on the hoisting construction of a municipal steel truss bridge in Zhejiang Province,combined with the characteristics of the bridge,through the selection of the strip installation method as its construction process. Then the detailed analysis and stability calculation of the hoisting process are carried out based on theoretical calculations. Using the finite element software Midas/Civil 2015 to simulate the ring and steel tube stress,it was found that some steel pipes could not meet the load requirements,and the adjustment of the design was carried out to adjust the stability,strength and deflection of the adjusted construction plan. The calculation shows that the hoisting construction scheme can meet the specification and design requirements and prove the feasibility of the scheme.
This paper is based on the hoisting construction of a municipal steel truss bridge in Zhejiang Province,combined with the characteristics of the bridge,through the selection of the strip installation method as its construction process. Then the detailed analysis and stability calculation of the hoisting process are carried out based on theoretical calculations. Using the finite element software Midas/Civil 2015 to simulate the ring and steel tube stress,it was found that some steel pipes could not meet the load requirements,and the adjustment of the design was carried out to adjust the stability,strength and deflection of the adjusted construction plan. The calculation shows that the hoisting construction scheme can meet the specification and design requirements and prove the feasibility of the scheme.
引文
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[4]王清明.大吨位移动塔架缆索吊机架设拱桥施工技术[J].桥梁建设,2000(1):54-56.
[5] Annan C D,Chiza A. Slip resistance of metalized–galvanized faying surfaces in steel bridge construction[J]. Journal of Constructional Steel Research,2014,95(3):211-219.
[6]樊贵.采用人字扒杆吊装法吊装35 m箱梁[J].中外公路,2013,33(1):148-150.
[7] Zhao R D,Zhang Z Y. A Summary of Development of ConcreteFilled Steel Tube Framed Arch Bridges in China[J]. Bridge Construction,2016,46(6):45-50.
[8]贾韶丽.大吨位桥面吊机的设计与承载力试验[J].公路工程,2015,40(2):64-69.
[9]陈永刚,盛朝亮.斜拉桥悬浇挂篮整体提升安装[J].公路交通科技(应用技术版),2015(6):290-291.
[10] Nuesse G. From the Research Use of Steel Hollow Plates as Lane in Steel Bridge Construction-Optimization of the Design,Construction,Manufacture and Maintenance for Improving Efficiency of Steel Bridges(P732)[J]. Stahlbau,2015,84(1):9.
[11]汪劲丰,张良,向华伟,等.城市钢箱梁桥横向分块施工分析[J].桥梁建设,2017,47(1):109-113.
[12]郑辉,方志.偏轴应变法测试预应力钢绞线拉力的修正[J].中国公路学报,2014,27(3):80-85.
[13] Son H,Hwang N,Kim C,et al. Rapid and automated determination of rusted surface areas of a steel bridge for robotic maintenance systems[J]. Automation in Construction,2014,42(2):13-24.
[14]王立军. GB 50017—2017《钢结构设计标准》简述[J].钢结构,2018(6).
[15]唐亮,凌贤长,苏雷,等.液化场地桥梁群桩基动力反应三维有限元模拟方法[J].岩土工程学报,2013,35(s2):401-407.
[16]王建国,陈涛.船舶与大跨度斜拉桥碰撞的有限元数值模拟[J].桥梁建设,2016,46(5):12-17.
[17] Shah U H,Hong K S. Input shaping control of a nuclear power plant’s fuel transport system[J]. Nonlinear Dynamics,2014,77(4):1737-1748.
[18]齐东春,沈锐利,杨俊.两种新单元在悬索桥有限元计算中的应用[J].桥梁建设,2014,44(1):18-24.