温度对悬索桥基准索股架设的影响

施工温度的改变对悬索桥基准索股放样时的线形及锚跨张力会产生较大的影响，如何高精度地修正这一影响因素给基准索股放样线形造成的施工误差十分重要；文章介绍了鱼嘴长江大桥基准索股施工放样时线形监控方法。采用解析法分析并计算了温度对悬索桥基准索股架设线形的影响修正，得到了单位变化量时该影响因素对主缆跨中控制点标高的影响值及锚跨张力的变化值，提出了基准索股架设中温度影响的修正方法，以供桥梁施工技术人员参考。

Influence of Temperature on Datum Strand Constrution of Suspension Bridge

The changes of temperature show greater impact on alignment of datum wire strand constrution of suspension bridge,how to modify the alignment errors caused by construction temperature of datum strand and cable tension of anchorage is very important.This paper introduces the monitoring method of Yuzui Yantze river bridge construction,analyzes the effect of temperature on erection alignment of suspension bridge datum strand using analytical method,gets height changes of cross-midpoint and tension changes at a...