decrement ratio 中文意思是什麼
decrement ratio
解釋
減幅比-
The natural logarithm of this ratio is called the logarithmic decrement.
此比率自然對數稱為對數的減量。 -
In this part, pga, pgv and pgd are studied, the main results are as follows : 1 ) in general, pga decrease with depth and can reach maximum at surface ; the pga ratio with depth of downhole / surface is affected by magnitude and ground pga value, the bigger the magnitude and pga value, the smaller the pga decrement with depth ; the decrement with depth is much more significant in near - surface than that in deep downhole
加速度峰值沿深度的變化與地震的大小和場地條件有關。對于土層場地，一般說來，隨著震級和地表pga的增大，加速度峰值沿深度的下降梯度減小。對于「土層基巖」型場地，基巖面處的水平分量約是地表的1 3 . 7 ，豎向分量約是地表的1 3 . 2 。
分享友人