场地条件对地震动和震害影响的研究进展与建议

场地条件对地震动和震害有重要影响。本文简要回顾了场地条件对地震动和震害影响的研究历史，总结和评述了这一领域的研究进展。重点对地形地貌、岩土类型、覆盖层厚度、土层结构、地下水、岩土动力性质及物理地质现象等对地震动和震害的影响进行了总结和评述。提炼和概括了目前场地条件对地震动和震害影响研究中比较一致的几点认识。在此基础上，提出了这一领域当前应进一步研究的问题，主要包括地震现场资料调查、局部地形几何尺度、场地分类、覆盖层安全厚度界限、近断层地震动参数分布规律、活断层避让距离，以及强震资料积累等关键问题。

Research Progress and Discussion of Site Condition Effect on Ground Motion and Earthquake Damage

Site conditions have a serious impact on ground motion and earthquake damage. In this article, the authors briefly review the research history of the impact of site conditions on ground motion and earthquake damage, and summarize the research progress in this field. They focus on the impact of topography and landforms, rock and soil types, overburden thickness, soil layer structure, groundwater, rock and soil dynamic properties, and physical and geological phenomena on ground motion and earthquake damage, and achieve several consistent understandings in the current research on the impact of site conditions on earthquake damage and ground motion. On this basis, the authors put forward the issues that should be further studied in this field, including seismic field data survey, local terrain geometric scale, site classification, safety thickness limit of overburden, near-fault ground motion parameter distribution law, active fault avoidance distance, and the accumulation of strong earthquake data.