大跨度斜拉桥转体不平衡称重施工技术

Construction Technology of Rotary Unbalanced Weighing for Long-span Cable-stayed Bridge

结合石家庄和平路跨石太铁路转体主桥工程进行了桥梁不平衡称重试验研究。详细介绍了通过试验测定球铰由静动摩擦状态变化的临界值,并根据试验结果计算出转体配重质量及位置,最终确定了配重方案,从而保证了大跨度斜拉桥的转体施工安全性和可靠性。

Combined with the rotation main bridge project of Shijiazhuang Heping Road ShijiazhuangTaiyuan Railway,the unbalanced weighing test of the bridge is carried out.The critical value of spherical hinge changing from static and dynamic friction state is determined by test,and the weight and position of rotating body are calculated according to test results.Finally,the weighing scheme is determined,which ensures the safety and reliability of rotating construction of long-span cable-stayed bridge.