| 1. | A model used pga , pgv and pgd for calibrating seismic response spectrum was introduced
介绍了用地面峰值加速度( pga ) 、峰值速度( pgv )和峰值位移( pgd )三个参数标定设计地震反应谱的模型。 |
| 2. | It is shown that distribution of dynamic response of dam is mainly alike . the maximum acceleration , the maximum displacement and the maximum shear stress are different obviously
可以看出，两种方法算得的坝体动力反应分布规律基本一致，但坝体的峰值加速度、峰值位移及峰值动剪应力等均有明显的差别。 |
| 3. | The outcomes indicate that under the effect of velocity pulse the increment of pgd ( peak ground displacement ) is greater than that of pgv ( peak ground velocity ) , which has less influence on pga ( peak ground acceleration )
结果表明：在速度脉冲效应下，地震动峰值位移增大值大于峰值速度增大值，而峰值加速度所受影响最小。 |
| 4. | The analysis is developed in three aspects ? amplitude , frequency and duration , accordingly , the contents of this paper can be divided into three parts . in the end of each part , a summary is given
以及日本宫城县北部hosokura矿的24个地震动峰值加速度数据，包括192组加速度峰值，其中每组峰值包括两个水平分量和一个竖向分量。 |
| 5. | The results show that minor and major earthquakes calculated from moderate earthquake have not consisted probability and the ratios of bedrock peak accelerations under different exceeding probabilities are closely correlative with earthquake environments
结果表明，由中震地震动参数换算得到的小震、大震地震动参数不具备一致概率水平，不同概率水准下基岩峰值加速度的比值与地震环境密切相关。 |
| 6. | Some of the key factors which could influence the characteristics of strong ground motion have been discussed , and the resultant peak ground acceleration ( pga ) distribution and the peak ground velocity ( pgv ) distribution around beijing area also have been made as well
通过分析影响强地面运动的几个关键因素，给出了北京地区强地面运动峰值加速度和速度分布特征，比较了合成强地面运动记录与通过衰减关系计算所得的结果。 |
| 7. | Based on the assessment of seismic risk of surrounding rocks , three sections are selected to perform fem calculating using ground acceleration history of different engineering properties as input . through study of the displacement and stress fields of grotto surrounding rocks under ground motion of different pga , frequency spectrum and duration , the influence of structure of grottoes and neighboring grottoes on dynamic damage and stability of country rock is discussed
通过对不同地震动峰值加速度( pga ) 、不同频谱、不同持时作用下,锚索加固洞窟围岩的位移场和应力场特征的研究,探讨了不同地震动作用下,洞窟的结构及洞窟之间的组合关系对围岩动态损伤及稳定性的影响。 |
| 8. | According to the need of design code for anti - seismic of engineering constructure , the bedrock peak acceleration rate and response spectrum of exceeding probability of 63 % , 10 % and 2 % are given respectively and seismic motion parameters are also calculated , which will provide the evidences for anti - seismic design of this electric power equipment station
按工程建筑物抗震设计规范要求，分别给出了50年63 % 、 10 %和2 %超越概率水平的基岩峰值加速度及反应谱，计算出地震动参数，为该电力设备站建设提供了抗震设计依据。 |
| 9. | 2 . studying the effects of soft layer and hard layer on seismic response . we further investigate the behavior of both the soft layers and the hard layers with the shear wave speed less than 500m / s effecting on the maximum acceleration and the shape of response spectrum , respectively
本文基于已有研究结果进一步分析了软夹层对场地地震动谱形状和峰值加速度的影响，以及剪切波速小于500m s的硬夹层对场地地震动谱形状和峰值加速度的影响，统计分析了软、硬夹层对场地地震反应影响的特点规律和程度。 |
| 10. | The deformation analysis was made to a 12 storey reinforcement concrete structure , building in site condition ii , earthquake fortification level 8 , by a program idarc - 2d which is put forward by the state university of new york at buffalo . the strong ground motion records obtained from pacific earthquake engineering research ( peer ) stiong ground motion database . thirty - eight waves were selected from the database by sorting the site condition and peak ground acceleration a comparison was made to the thirty - eight records " response spectra and the design response spectrum . thirteen waves were selected to the deformation analysis , el - centro wave and taft wave were added as a comparison . the result of computation shows that the selected waves damaged the structure severely than the el - centro wave and taft wave
利用idarc - 2d对一建于8度类场地上的12层钢筋混凝土框架结构进行了大震下的变形验算。强震记录取自加州国家地震中心强震数据库，按场地类别和峰值加速度对数据进行分类处理，从中选出38条波进行反应谱的拟合。最终选定拟合较好的13条波进行本次试算，作为比较加入了常用的el - centro波和taft波。 |
