| 钢管造型拱竖向转体施工结构仿真分析 |
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| 引用本文： | 刘扬,邬晓光,徐芳元.钢管造型拱竖向转体施工结构仿真分析[J].长安大学学报(自然科学版),2007,27(2):49-52,84. |
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| 作者姓名： | 刘扬 邬晓光 徐芳元 |
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| 作者单位： | 1. 贵州省交通建设工程质量监督站,贵州,贵阳,550016
2. 长安大学,桥梁与隧道陕西省重点实验室,陕西,西安,710064 |
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| 基金项目： | 青海省高等级公路建设管理局科技攻关项目 |
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| 摘 要： | 桥梁转体施工过程中，节段的坐标偏离拱轴线会产生较大的附加弯矩。运用结构有限元分析的方法，采用Sap2000程序建模，对某黄河大桥竖向转体方案各施工阶段的结构内力、变形、稳定和模态进行仿真分析，论证了该施工方案的可行性和合理性，并提出了拱肋焊接工艺控制、合龙温度控制和拱肋增加扣索等措施。结果表明，这些施工措施可确保大桥的施工安全。
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| 关 键 词： | 桥梁工程 竖向转体 结构仿真 动态模拟 应力分布 |
| 文章编号： | 1671-8879（2007）02-0049-04 |
| 收稿时间： | 2005-11-20 |
| 修稿时间： | 2005年11月20 |
Simulation of vertical shift constuction of steel tub arch bridge |
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| LIU Yang,WU Xiao-guang,XU Fang-yuan.Simulation of vertical shift constuction of steel tub arch bridge[J].JOurnal of Chang’an University:Natural Science Edition,2007,27(2):49-52,84. |
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| Authors: | LIU Yang WU Xiao-guang XU Fang-yuan |
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| Abstract: | A big additional bendiny moment caused by the departure of coordinate axis from arch axis is taken place during the vertical shift construction of bridge. According to the construction plan of a bridge over Yellow river, this paper carries out a simulation on the internal force, deforming, stability and modelling of different construction phases by Sap2000 and finite element method. Some proposals, such as the arch rib welding craft control, closure temperature control, increasing cable strut on the arch rib and so on, are presented. The simulation results show that those measures can ensure the safety of construction. 3 tabs, 2 figs, 12 refs. |
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| Keywords: | bridge engineering vertical shift structure simulation dynamic simulation stressdistribution |
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