砂垫层刚度对地面地震反应的影响研究

我国是一个多地震国家，地震区分布范围广，发震频繁。因此减震、隔震技术对国民经济基本建设具有重要意义。随着科学技术的进步、计算机的运用等，减震、隔震方法的研究与应用取得了很大的发展，但仍有许多问题有待解决，特别是就我国目前中、低层房屋较多的实际状况而言，这一问题显得尤为突出。采用在基础与地基之间设置砂垫层的方法，减小或不放大地震对地面的影响，最终达到减震、隔震的目的。在提出砂垫层隔震概念及其与《建筑抗震设计规范》(GB50011—2001)的区别之后，研究了砂垫层刚度对地面地震反应的影响，得到了一些有益的结果。

The Study of Seism Response of Sand Cushion in Different Rigidity

Earthquake occurs in China frequently, specially in the countryside or town. Now there are many brick - and - concrete composite constructions or brick - and - timber constructions in the countryside and in a town, and it will still be a major style in future. So, it is necessary for these buildings to study seismic response. Sand cushion between foundation and soil is different from the method in Code for Seismic Design of Buildings (GB500411 - 2001) , it can reduce the calamity by earthquake. Sand cushion in different rigidity results in different seismic responses. The calculations of sand cushion can prove it.