Modern seismic codes employed the uniform hazard basis for seismic design, which defines design ground motion with a fixed return period for different sites. Seismic design for uniform hazard ground motion does not lead to the goal of uniform structural safety. As a potential solution to address this problem, the risk-targeting approach has been considered in recent years. This study aims to investigate the changes applied by this approach to the current uniform hazard ground motions. For this purpose, hazard curves for Iran from the Earthquake Model of Middle East (EMME14) have been used. The risk-targeting approach has been performed in two cases, once considering GMs with a 475 year return period and then considering GMs with a 2475 year return period. For each case, a generic fragility function for buildings has been defined. A 1% probability of collapse in 50 years was selected as the target risk in both cases. For each case, the map of the distribution of the theoretical collapse risk is presented. It was discussed that by employing a generic fragility function, the risk-targeting could not guarantee to harmonize risk amongst the sites with different hazard levels, but it could have such an impact for the sites with the same design GM but the different slope of hazard curves. Finally, it was found that basing the seismic design on the 2% in 50 years GMs level leads to a more uniform collapse risk across the country.

现代地震法规在地震设计中采用了统一的危险基础，该基础定义了针对不同地点的固定返回周期的设计地震动。统一危险地面运动的抗震设计并没有达到统一结构安全的目标。作为解决此问题的潜在解决方案，近年来已考虑了以风险为目标的方法。这项研究旨在调查这种方法对当前均匀危险地面运动的影响。为此，已经使用了来自中东地震模型（EMME14）的伊朗的危险曲线。在两种情况下执行了风险目标方法，一次是考虑具有475年回报期的总经理，然后考虑了具有2475年回报期的总经理。对于每种情况，已经定义了建筑物的通用易损性函数。在这两种情况下，将50年内崩溃的可能性为1％作为目标风险。对于每种情况，都提供了理论崩溃风险分布图。讨论了通过使用通用的脆弱性函数，风险目标不能保证在具有不同危险等级的场所之间协调风险，但是对于设计GM相同但危险斜率不同的场所可能会产生这种影响。曲线。最后，发现在50年GMs水平的2％的基础上进行抗震设计会导致全国范围内更均匀的坍塌风险。风险目标不能保证在危险等级不同的地点之间协调风险，但是对于设计GM相同但危险曲线斜率不同的地点可能会产生影响。最后，发现在50年GMs水平的2％基础上进行地震设计会导致全国范围内更均匀的坍塌风险。风险目标不能保证在危险等级不同的地点之间协调风险，但是对于设计GM相同但危险曲线斜率不同的地点可能会产生影响。最后，发现在50年GMs水平的2％基础上进行地震设计会导致全国范围内更均匀的坍塌风险。