无索鞍预偏施工悬索桥的主缆施工控制计算  

Calculation Method of Main Cable System for Suspension Bridge Based on Zero Saddle Pre-bias

作　　者：许世展[1] 田亚林 贺拴海[1] 

机构地区：[1]长安大学桥梁与隧道陕西省重点实验室,陕西西安710064 [2]河南路桥工程集团公司,河南郑州450052

出　　处：《公路交通科技》2007年第2期91-93,共3页Journal of Highway and Transportation Research and Development

摘　　要：针对采用无索鞍预偏施工设计的悬索桥施工控制中主缆空缆状态、空缆标高等控制参数的计算问题,使用有限元程序ANSYS全桥统一建模,从link10单元初应变调整和单元生死功能入手,寻找结构的成桥内力状态,并从成桥状态出发,倒退至结构空缆,对应无索鞍预偏施工方法的空缆状态定义,调整结构受力,最终得到空缆状态的结构线形及内力参数。实例验证表明,该方法有效地解决了无索鞍预偏施工控制中主缆线形的计算问题。In order to solve calculation problem of main cable control parameters such as cable initial construction state and initial elevation in zero cable saddle pre-bias design of suspension construction, ANSYS program was used to building whole bridge finite analysis model. And starting with adjusting the initial strain of element link 10 and element birth and death, finding the final inner force status of whole bridge, then tracking to the initial cable states, so the method from the bridge finishing state back up to initial state is established. This method is proved to be able to solve the calculation problem of main cable linetype control in zero cable saddle pre-bias suspension bridges.

关 键 词：悬索桥 无索鞍预偏 空缆状态 锚跨张拉 施工控制 

分 类 号：U448.25[建筑科学—桥梁与隧道工程]