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引言K.M.Newmark 最近重新注意到从物体的抛掷推导地震地面运动的极限值。根据静止在线性弹簧上的质点的反应的一般论证,Newmark 认为,虽然一个近地表的物体的实际加速度必需大于重力加速度
INTRODUCTION K.M. Newmark recently revisited the derivation of the threshold value of earthquakes from earthquakes. According to the general argument of the reaction of particles resting on a linear spring, Newmark argues that although the actual acceleration of a near-surface object must be greater than the acceleration of gravity