地铁列车引起的振动对西安钟楼的影响.pdfVIP

34 4 Vol. 34 No. 4 2010 8 JOURNAL OF BEIJING JIAOT ONG UNIVERSITY Aug. 20 10 : 2010) 马 蒙, 刘维宁, 丁德云 ( , 100044) : 以西安地铁2 号线6 号线通过钟楼工程为背景, 针对铺设浮置板 道和采取隔离桩两种减 振措施, 分6 种工况分析了地铁2 号线及6 号线运营对钟楼结构的振动影响, 预测了减振隔振措施的 效果, 并分别对不同工况进行三维动力有限元数值模拟. 结果表明: 不采取减振措施时, 地铁振动会对 钟楼造成影响; 采用浮置板 道对地表振动有明显改善; 采用隔离桩对减少地表振动效果并不明显. : 地铁振动; 古建筑; 动力有限元; 减振措施 : TB5332 : A Influence of Metro TrainInduced Vibration on Xi an Bell Tower MA M eng , L I U Weining , DIN G D ey un ( School of Civil Engin ring , B ijing Jiaotong Univ rsity , B ijing 100044, China) Abstract:Bas d on th x isting circumstanc s that Xi an subw ay Lin 2 and Lin 6 w r d sign d via th B ll T ow r, and through consid ring th two vibration r duction m asur s: floating slab tracks and isolation pil s, six diff r nt conditions ar analyz d by 3D dynamic FEM num rical simulation. With a vi w to th influ nc of th B ll Tow r s structur caus d by th op ration of subw ay Lin 2 6, th ff ct of vibration r duction and isolation is pr dict d. Th conclusions indicat that, without taking vibration r duction m asur s, th B ll Tow r will b aff ct d by th traininduc d vibration. And th n, floating slab tracks can r duc th ground vibration. In addition, isolation pil s don t hav an obvious ff ct on th ground vibration r duction. Key words:m tro vibration; h ritag building; dynamic FEM; vibration r duction m asur , , [ 4] . 6 8 [ 57] . . 1 . , 2 , . . , 1964 , M iloslav M