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

韩国的抗震设计规定是在1988年制定的。目前，建筑抗震设计在韩国是强制性的。朝鲜半岛的地震活动性介于低地震和中等地震之间。基本上，韩国的地震规定是根据统一建筑规范和ATC 3-06规定制定的。本研究的目的之一是调查韩国地震规定中的抗震设计方法与ISO 3010之间的关系。对两个条款中包含的主要参数进行分类和比较。它们是地震烈度、重要因子、地震危险区因子、强度折减因子和谱坐标。并对两种规定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，这两个规定之间最突出的区别是所考虑的极限状态。在ISO 3010中明确考虑了两种极限状态，即适用性和极限状态。在韩国的规定中只考虑一个极限状态，即终极极限状态。然而，正在修订的条款考虑了两种极限状态的运行和防止崩溃。1997年，建设交通部和韩国地震工程学会制定了新的抗震设计标准。在指南中，设计谱的结构抗震系数提供了双重性能水平，功能和防倒塌性能水平，以及具有不同复发周期的地震。本研究按照常规的单级抗震设计规范设计了一榀钢框架结构，并采用能力谱法分析了该结构在强震荷载作用下的非线性性能，以达到相应的防倒塌性能目标。将最大层间位移与新准则中规定的性能标准进行比较，以检验按常规设计规范设计的建筑结构是否满足新性能抗震设计准则推荐的性能标准。研究发现，该模型结构虽然设计用于常规的单级地震荷载，但对于2400年回复期的地震荷载（防止倒塌性能目标的地震荷载），仍保留了足够的安全余量。还发现，对于给定的模型结构，容量谱法的结果与时程分析法的结果基本吻合。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