《大节段拱肋提升整体稳定性精确控制理论分析》-管理学论文，企业管理论文-论文范文参考-科学狗论文网

标题

大节段拱肋提升整体稳定性精确控制理论分析

范文

陆珍君

【摘? 要】在大跨度钢箱拱桥工程建设中，将主拱肋分为多个节段进行安装，其中，中拱段在桥位处低位拼装成拱后，采用整体提升的方式将拱肋安装到位，最后与边跨段拱肋合龙成桥，拱肋在吊装过程中，受自重、风荷载、温度荷载、拉索初应力等荷载以及施工精度（如不均匀起吊）的影响，不可避免会产生变形，直接影响拱肋位移预测的精度和拱肋吊装到位后的安装精度。因此，论文分析了提升钢箱拱肋整体稳定性的精确控制理论，以期提高验算参数的接近值。

【Abstract】In the construction of long-span steel box arch bridge engineering， the main arch rib is divided into several sections for installation. Among them， after the middle arch section is assembled into an arch at the low position of the bridge， the arch rib is installed in place by using the overall lifting method， and finally it closures with the arch rib of the side span section to form a bridge. During the hoisting process of arch rib， the arch rib will inevitably produce deformation due to the influence of load such as self weight， wind load， temperature load， initial stress of cable and construction accuracy （such as uneven lifting）， which will directly affect the displacement prediction of arch rib and the installation accuracy of arch rib after hoisting in place. Therefore， this paper analyzes the precise control theory of improving the overall stability of steel box arch rib， so as to improve the approximate value of the check calculation parameters.

【關键词】整体提升;稳定性;精确控制;理论分析

【Keywords】overall lifting; stability; precise control; theoretical analysis

【中图分类号】U445.4? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?【文献标志码】A? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?【文章编号】1673-1069（2020）07-0170-03

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