悬索桥锚跨张力控制系统  

Tension control system of suspension bridge anchor cable

作　　者：黄平明[1] 慕玉坤 

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]西安瑞通路桥科技有限责任公司,陕西西安710075

出　　处：《长安大学学报（自然科学版）》2007年第4期42-45,共4页Journal of Chang’an University(Natural Science Edition)

基　　金：湖北省交通科技项目

摘　　要：在以往的悬索桥施工中,通常只对主缆线型进行控制,不对主缆索股张力进行特别控制,从而成桥后的主缆线型及结构安全系数难以保证。为了确保悬索桥锚跨索股张拉完成后,主缆线型保持稳定,且各索股受力保持均衡,以宜昌悬索桥为例,在主缆索股张拉过程中对各种索力控制方法进行了多次试验并对测试结果进行对比分析,提出了一种采用高精度压力传感器的系统控制方法,并对控制系统的部分组成设备进行开发,最终形成一套完整的控制系统。实际应用结果表明:该控制系统可以很好地实现对主缆线型和锚跨张力的双向控制;整个控制系统的仪器设备操作简单,控制方法可靠、易于掌握,并具有较高的控制精度。During the period of suspension bridge construction in the past, a control to the main cable type was usually carried on, but a special control to the cable tension wasn＇t carried on. Therefore, it was very difficult to assure the main cable type and structure safe coefficient after the bridge finished. To guarantee the main cable type stable and the cable tension balance after each draw of the cable, taking Yi Chang suspension bridge as an example, a lot of methods of cable tension control were tried and researched. Through the contradistinctive analysis of the testing result which is gotten by different methods, a systemic control method was put forward. The applied results show that this control system can realize the double control of the main cable type and the anchor cable tension, and the control system is reliable, and it has higher control accuracy. 10 figs, 9 refs.

关 键 词：桥梁工程 悬索桥 锚跨索股 张力控制 

分 类 号：U448.25[建筑科学—桥梁与隧道工程]