独塔单索面斜拉桥静载试验研究.pdf

2009 30 2 陈再荣, 葛 翔, 李 辉 ( , 4 30070) : 对主跨径 12 8 m 独塔单索面斜拉桥实施静载试验, 在各加载工况下, 测试并分析关键截面 主梁挠度索 力增量主梁应力和主塔偏位等通过比较该桥 实际加载效应和设计分析模型, 结果表明: 该桥 刚度和承载能力 满足设计和使用要求; 采用塔梁固结, 辅助墩, 多室箱梁 结构形式能有效 提高抗扭刚度 : 斜拉桥; 独塔; 单索面; 塔梁固结; 静载试验 Research on Static Load Experiment of Cabl e-stayed Bridge with Single Tower and Single Cable Plane CH EN Za i-r ong , GE X iang , L I H ui ( Schoo l of Civ il Eng ineering and A rchi e ur e, Wuhan Universi y of T echnology, Wuhan 4 30070, China) Abstract: S a ic load exper imen s w ere car ried on a sing le- ow er , sing le- plane cable- s ayed bridg e w i h a main span of 12 8m a variou s load condi ions. Loading eff ec s of major cross- sec ion, namly: deflec ion of he main beam , incremen of cable for ce, s ress of he main beam and he main ow er , displacemen of he main ow er w er e measured and analyzed. By comparing he ac ual load eff ec s w i h he design analysis mo del, r esul s show ha : he s iffness and load- bearing capaci y of he bridg e mee he design and use requiremen s; he f ixa ion of ow er and beam , auxiliary piers, mul i- r oom box s ruc- ur e can effec ively improve orsional rig idi y. Key words: cable- s ayed bridg e; single ow er; single plane; f ix a ion of ow er and beam ; s a ic load ex perimen 1 , , 1 1 67 m , 17 , , , , 2 , 2 m 9 , 6 m, [ 1 , 2] , , 34 m + 56 : m+ 128 m, 0 . 7, 33. 5 1) 128 m A ( m, , : - 20 , 86 m) 2 - 120 , 3. 5 kNPm