斜拉索索力测试及评价方法研究  

Study on the Cable Force Measurement and Appraisal Method of Stayed Cable

作　　者：鞠凤森[1] 

机构地区：[1]吉林省高速公路管理局,吉林长春130022

出　　处：《工程与试验》2012年第2期17-19,共3页Engineering and Test

摘　　要：斜拉桥是利用斜拉索把桥跨结构的恒载和承受的活载传递到塔柱上,斜拉索索力的大小对整个桥梁结构受力的合理性和主梁线形起着决定性的作用,因此对斜拉索的索力进行测试及评价对斜拉桥的安全运营十分必要。基于两端张紧弦模型,明确了基于频率法测试斜拉索索力的基本原理及过程。基于测试到的索力数据,提出了一种采用灰色关联度方法对全桥索力进行评价的方法。最后以一座斜拉桥的索力测试为工程依托,验证了方法的可行性和有效性。Cable stayed bridge transfers bridge dead weight and live load to the towers through stayed cables.The cable force determines the reasonability in bearing forces and girder alignment,so it＇s very necessary to test and appraise the cable forces for the safety running of the cable stayed bridge.With the model of tight string on the ends,the fundamental principle and process of testing cable forces are clarified based on the frequency method.According to the measured data,the evaluation method of using gray correlation to appraise the cable forces of the whole bridge is established.At last,the cable force tests for a practical cable stayed bridge verify the effectiveness and feasibility of the above method.

关 键 词：斜拉索 索力 频率 评价 

分 类 号：U448.27[建筑科学—桥梁与隧道工程]