箱梁桥悬臂浇筑施工中的温度效应及其控制

Temperature Effect and Control in Cantilever Construction of Continuous Box Girder Bridge of Pre-stressed Concrete

温度变化会使桥梁结构产生温度变形,就T构施工监控而言,主要是竖向温度场引起各悬臂浇块标高的变化,由日照引起的挠度,该挠度在施工中以实测的温度变形应计入其影响。

Change in temperature makes the bridge structure deform. As far as construction monitoring of T-frame, temperature gradient is main reason for the change of each cantilever block elevation, that is, the deflection is caused by sunshine. The deflection is included in construction through temperature deformation velocity gained by actual measurement.