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本文根据集中载荷作用下弹性半无限体内任意一点的位移公式,推导出水平应变、垂直应变和倾斜的表达式。用积分求和的方法,分别计算了在半径为50公里和100公里的园形区域内,气压均匀升高1毫巴,压力园中心0-2000米不同深度处的水平应变、垂直应变、倾斜和体应变,进而得到水平应变、垂直应变、倾斜和体应变的气压周期性变化效应与其相应的最大潮幅值的比值分别为3.0％,24.0％,0和5.9％。据此论证了进行高精度气压辅助观测的必要性,提出了气压效应的校正方法。
In this paper, according to the displacement formula of elastic semi-infinite body under concentrated load, the expressions of horizontal strain, vertical strain and inclination are deduced. In the method of integral summation, the horizontal strain, vertical strain and inclination at different depths of 0-2000m in the center of the pressure center are calculated respectively in the circular zone with the radius of 50km and 100km, The results show that the ratio of cyclic changes of horizontal and vertical strain, inclination and body strain to the corresponding maximum tidal amplitude is 3.0%, 24.0%, 0 and 5.9% respectively. Based on this, the necessity of high-precision atmospheric pressure aided observation is demonstrated and a correction method of atmospheric pressure effect is proposed.