铁路振动对历史城墙影响的测试分析

Test and Analysis of Influence of Railway Vibration on Historical Wall

铁路列车运行对周围建筑产生振动影响,古建筑对振动更为敏感。为比较不同控制点位置及方向的振动响应,以某历史城墙为保护目标,基于《古建筑防工业振动技术规范》分析铁路振动对城墙的影响,得出水平方向振动速度对古建筑更不利,古建筑顶部水平振动大于底部水平振动;铁路引起的古建筑的水平振动中,垂直于铁路线方向是主要贡献量,并显著大于平行于铁路线方向。

Railway train operation has a vibration effect on surrounding buildings, and ancient buildings are more sensitive to vibration. In order to compare the vibration responses at different control points and directions, taking a historical city wall as the protection target, the influence of railway vibration on the city wall is analyzed based on Technical specifications for protection of historic building against man-made vibration. It is concluded that the horizontal vibration speed is more unfavorable to ancient buildings, and the horizontal vibration at the top of ancient buildings is greater than that at the bottom.In the horizontal vibration of ancient buildings caused by railway, perpendicular to the direction of railway line is the main contribution, and is significantly larger than parallel to the direction of railway line.