| 刘彪,李志远,郭胜山,赵建军,赵宗国,董丹丹.强震区水电站地面厂房上部结构地震响应分析和抗震措施研究[J].中国水利水电科学研究院学报,2025,23(4):383-392 |
| 强震区水电站地面厂房上部结构地震响应分析和抗震措施研究 |
| Research on seismic response analysis and seismic measures of superstructure of ground powerhouse in strong earthquake areas |
| 投稿时间：2024-11-21 |
| DOI：10.13244/j.cnki.jiwhr.20240234 |
| 中文关键词: 水电站地面厂房 排架柱结构 鞭梢效应 二阶效应 抗震措施 |
| 英文关键词:ground powerhouse of hydropower station frame-column structure whiplash effect the second-order effect aseismic analysis |
| 基金项目:国家自然科学基金项目（52209157） |
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| 中文摘要: |
| 地面厂房上部采用排架柱结构具有节省材料、空间利用高等优点。但由于上下部结构存在显著的质量和刚度突变，地震时将导致上部结构产生强烈的鞭梢效应。因此，厂房排架柱的抗震安全评价及抗震措施研究是排架柱设计的关键问题。其中，排架柱二阶效应的合理模拟是抗震安全评价里的重点和难点，尤其对于国际水电工程设计，如何基于国际规范正确地考虑二阶效应以及降低结构鞭梢效应是目前厂房抗震研究的热点之一。针对上述问题，以印度尼西亚某水电站地面厂房为例开展了厂房上部结构地震响应分析，对比分析了上部结构为排架柱和墙体两种不同设计方案在地震作用下的动力响应特性。研究表明：从基础传来的地震波经厂房下部结构放大后，对上部结构的地震反应影响显著。上部为墙体结构的动力响应小于排架柱结构，增加剪力墙能有效提高厂房的抗震性能。 |
| 英文摘要: |
| The superstructure of the hydropower station ground powerhouse adopts the frame-column structures with the advantages of material saving and high space utilization. However， due to the significant mass and stiffness mutation of the superstructure and substructures， strong whiplash effect will occur in the upper structures during earthquakes. Therefore， the seismic safety evaluation and seismic measures are usually the key issues in the design of the frame-column structure. Among them， the reasonable simulation of the second-order effect of the frame-column is the key and difficult point in the seismic safety evaluation， especially for the design of international hydropower projects. How to correctly consider the second-order effect based on the international code and how to reduce the structural whiplash effect are one of the hotspots in the seismic research of the ground powerhouse at present. In order to address the above problems， the seismic response analysis of the superstructure of a hydropower station ground powerhouse in Indonesia was carried out as an example， and the dynamic response characteristics of the superstructure with two different design schemes， namely， the frame-column structures and the walls， were analyzed comparatively under seismic effects. The study shows that the seismic response of the superstructure is significantly affected by the amplification of the seismic wave from the foundation by the substructure of the powerhouse. The dynamic response of the wall structure is smaller than that of the frame-column structure， and the addition of shear wall can effectively improve the seismic performance of the powerhouse. |
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