戴国莹
    （中国建筑科学研究院  北京 100013）

[提要]  简要介绍新抗震设计规范对89抗震设计规范的改进，包括：新的地震动参数区划图，场地类别划分，长周期和不同阻尼的设计反应谱，双向扭转计算和新的变形验算要求，抗震概念设计的进一步补充，放松框架柱轴压比要求的构造，抗震墙约束边缘构件的设计，以及简体结构、高层钢结构抗震设计的要求和多层建筑减震的设计原则。
[关键词]  规范  抗震设计  修订  建筑结构

The Code fbr Seismic Design of Buildings ( GBJ11-89) has been revised. A brief introduction is given to some major improvement in this revised edition. They are the new zoning map of design parameters of earthquake motion, the modification of design seismic response spectra, the torsion analysis and cleformation checking for building structures, the requirement for regular building, the control axial pressure of RC columns, the detail measure of end in RC structural wall. The design method has proposed for some new structural system in this revised edition, which are seismic steel structures of tall building, seismic RC tube system and isolation earthquake of multi-story structures, and so on.
Keywords: code; seismic design; improvement; building structures