利用点荷载叠加方法研究天马跨断层短水准异常资料

根据半无限体表面受法向集中力作用点荷载叠加的原理,计算了某大型集装箱堆场对其附近的厦门天马跨断层短水准形变观测场地南点垂直位移的影响。结果表明,集装箱堆场引起的南点的垂直形变量与在该点出现的地震前兆异常量相比非常小,可忽略不计,从而为该形变场地地震异常的判定提供了依据。本方法也可用于分析大型荷载对倾斜仪和应力—应变仪观测值的影响。

Study of Across-fault Short Leveling Anomalous Data in Tianma, Xiamen, Fujian, by Using Integral Point Load Method

There is a large container field near the Tianma, Xiamen across-fault short leveling site. The influence of the container field on the vertical displacement of the southern point in the site is calculated using the method of integration of point load (the normal single force acting on the surface of semi-infinite body). The result shows that the influence of the container field is small compared with the amplitude of abnormity and can be ignored, thus supplying a basis for the determination of the seismic anomaly. This method can also be used to calculate the influence of large load on the data observed by stress-strain meters and tilt meters.