悬索桥空缆状态下锚跨主缆索股张力的计算与监测

Strand tension calculation and monitoring of anchor span during construction of suspension bridges

运用自行编制的悬索桥施工过程主缆架设计算程序,对张花高速公路澧水大桥主缆架设期间空缆状态下的锚跨索股张力进行了计算.主缆架设完成时,采用索力动测仪对索股张力进行了测试.对该桥索股架设完成时的索力测试数据与锚跨部分丝股张力的理论计算结果进行了比较.分析结果表明:在控制好主缆线形的同时,锚跨逐索股张力的理论计算数据与实测数据吻合.考虑到索股理论计算模型与实际的差异以及环境因素的干扰,部分索股张力的实测值与理论值有差距,因此,有待于理论上的进一步研究.

Using the own writing calculating program of main cable erection of suspension bridges during erection process, the Lishui River Bridge main cable erection of cable anchor span strand cable force is calculated for the constructing state. Using dynamic testing Suo Liyi on test strand tension, when the main cable erection is completed. During the completion of cable of the bridge, the comparation of the tension data of strand erection is tested and anchor span parts of wire strand tension are theoretically calculat- ed. All the results show that measured data of the tension can be matched with the the- oretical data. Considering the strand differences between theoretical models and actual interference as well as environmental factors ,parts of cable forces measured from theoretical values have gaps,so further study of the theory could be done.