摘要
以某在建的PC系杆拱桥为研究对象,采用Ansys程序的几何非线性有限元接触分析方法,模拟系梁与支架的关系,建立了模拟该桥张拉吊杆施工过程的空间分析模型,采用三种加临时横撑的方案来控制施工时暂态结构的安全性,计算了张拉吊杆过程中三方案不同状态下结构的弯矩、位移及稳定系数,试图通过分析找到最佳的加临时横撑的方案,进而为整桥施工模型的建立和同类桥梁的施工控制提供参考.
In this paper, a tied PC arch bridge is considered as the investigated structure. The contact analytical approach of the finite element analysis software Ansys is applied to set up three dimensional finite element computational model to simulate the relation of collar beam and bracket. Three schemes added temporary bracket are adopted to control the security of the transient structure during the construction. The bending moment, the displacement and the stability factor of three theme are counted during the stretching suspender at different mode to try to find a optimal scheme of the added temporary bracket and to supply the reference for the foundation of the construction model of the whole bridge and the construction control of the homogeneous bridge.
出处
《河南科学》
2005年第6期892-895,共4页
Henan Science
基金
国家自然科学基金资助项目(50178064)
关键词
拱桥
有限元
几何非线性
接触分析
arch bridge
finite element
geometrical nonlinearity
contact analyses
