EPSC网格混凝土墙体集承重、保温阻燃、节能环保和施工快捷于一体，已初步应用于RC框架中形成新的结构体系，其地震安全性问题成为研究的热点。已有研究表明，近断层脉冲型地震动相对一般的地震动对工程结构有更大的潜在破坏作用。本项目针对近断层速度脉冲型地震动作用下EPSC米字格混凝土墙RC框架的抗震性能及其不利影响因素开展研究。通过近断层地震动记录收集与选取，结合人工地震动合成，确定合理的近断层地震动输入；构建“米字格”混凝土墙体模型，开展振动台试验探究速度脉冲地震动作用下该结构体系的地震响应，实现其地震损伤过程的物理模拟；建立框-墙动力相互作用三维精细化数值分析方法，与试验结果实现互证支撑，探讨墙体材料和框-墙连接方式对RC框架动力响应及破坏模式的影响；确定米子格混凝土墙RC框架地震易损性分析的合适的地震动强度指标和结构响应损伤指标，特别是速度脉冲参数指标，以实现对该结构体系抗震性能的合理评估。

EPSC grid concrete wall, which integrates with the characteristics of load-bearing, insulation, fireproof, environmental protection, energy-saving and quick construction, has been preliminarily applied in RC frame to form a new structural system, and its seismic safety problem has become a hot topic in the field of earthquake engineering. Previous studies have shown that near-fault velocity pulse ground motions have greater potential damage to engineering structures than ground motions without velocity pulse. The project carries out research on the seismic performance and its adverse factors of RC frame with EPSC star-type grid concrete wall under near-fault velocity pulse ground motion. By collecting and selecting near-fault ground motion and combining artificial ground motion, the reasonable near-fault ground motion input will be determined. The ‘star-type’ grid concrete wall will be constructed. The shaking table test will be performed to investigate the seismic response and realize the seismic damage process of the RC frame with EPSC star-type grid concrete wall under velocity pulse ground motion. A 3D refined numerical analysis method on frame-wall dynamic interaction will be established, and the simulating results will be mutually verified with the test results. According to the nonlinear analytical method, the effect of wall material and frame-wall connection type on the dynamic response and failure modes of RC frame will be analyzed. In order to realize the reasonable evaluation of the seismic performance of the structure system, the appropriate intensity measure and damage measure, especially the velocity pulse parameter measure, will be determined for the seismic vulnerability analysis of RC frame with star-type grid concrete wall.