International Joint Research on Earthquake Disaster Mitigation of Buildings in Republic of Korea

韩国的抗震设计条款制定于1988年。目前，在韩国，建筑抗震设计是必修课。朝鲜半岛的地震活动处于中低水平。韩国的抗震条款基本上是根据《统一建筑规范》和ATC3-06条款制定的。本研究的目的之一是探讨韩国抗震规范中的抗震设计方法与ISO 3010的关系。对这两个条款中包含的主要参数进行了分类和比较。它们是地震烈度、重要性因子、地震危险区因子、烈度折减因子和谱坐标。并对两种方案的地震力和剪力的竖向分布进行了研究和比较。根据调查，得出的结论是，这两项规定之间最显著的区别是正在审议的限制状态。在ISO 3010中，明确考虑了两种极限状态，即适用性和终极状态。…此外，在韩国条款中，考虑了一种极限状态，即极限极限状态。然而，正在修订的条款考虑了运营和防止坍塌的两个极限状态。韩国建筑交通部和韩国地震工程学会于1997年制定了基于性能的抗震设计新指南。在指南中，提供了双重性能水平、功能和防倒塌性能水平以及具有不同重现期的地震的地震系数，用于构建设计谱。本文对某钢框架结构按常规单层抗震设计规范进行了设计，并采用能力谱方法对结构在强震荷载作用下的非线性性能进行了分析，评价了结构在强震作用下的抗倒塌性能。将最大层间位移与新规范中规定的性能指标进行比较，以检查按常规设计规范设计的建筑结构是否满足新的基于性能的抗震设计准则所推荐的性能标准。结果表明，虽然模型结构是按常规单层地震荷载设计的，但对于2400年重现期的地震荷载(以防塌性能为目标的地震水平)仍保留了足够的安全裕度。对于给定的模型结构，能力谱方法的计算结果与时程分析结果基本吻合。较少

The Korean seismic design provision was developed in 1988. In present seismic design for building is compulsory in Korea. The seismicity of Korean peninsula is between low and moderate. Basically the Korean seismic provision was developed based on Uniform Building Code and ATC 3-06 provision. One of the objectives of this research is to investigate the relationship between the seismic design method in Korean seismic provision and ISO 3010. The major parameters included in both provisions were classified and compared. They are seismic intensity, importance factor, seismic hazard zone factor, strength reduction factor, and spectral ordinates. The vertical distribution of seismic force and shear of two provisions is also investigated and compared. Based on the investigation it is concluded that the most prominent difference between these two provisions is the limit states under consideration. In ISO 3010 two limit states are explicitly considered which are for serviceability and ultimate. … More In Korean provision one limit state is considered which is ultimate limit state. However, the provision in progress of revision considers two limit states for operation and collapse prevention.The Korea Ministry of Construction and Transportation and The Earthquake Engineering Society of Korea established a new guideline for performance-based seismic design in 1997. In the guideline the seismic coefficients for construction of the design spectrum were provided for double performance levels, functional and collapse prevention performance levels, and for earthquakes with various recurrence periods. In this study a steel framed structure was designed in accordance with the conventional single-level seismic design code, and was analyzed using capacity spectrum method to evaluate the nonlinear performance of the structure subjected to the strong earthquake load corresponding to the collapse prevention performance objective. The maximum inter-story drift was compared with the performance criteria specified in the new guideline to check whether the building structure designed in accordance with the conventional design code satisfy the performance criteria recommended by the new performance-based seismic design guideline. It was found that the model structure, although designed for the conventional single level earthquake load, retains enough margin for safety for the earthquake load of 2,400 year return period (earthquake level for collapse prevention performance objective). It was also found that for the given model structure the results from the capacity spectrum method generally coincide well with those obtained from the time history analysis. Less