| 杜修力,王进廷.拱坝—可压缩库水—地基地震波动反应分析方法[J].水利学报,2002,33(6):0083-0091 |
| 拱坝—可压缩库水—地基地震波动反应分析方法 |
| Analysis method for seismic response of arch dam-compressible water-foundation systems |
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| DOI： |
| 中文关键词: 拱坝 可压缩库水 库水地基相互作用 地震反应 |
| 英文关键词: arch dam-compressible water-foundation system dynamic interaction seismic response |
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| 中文摘要: |
| 本文采用理论数值模型严格模拟可压缩库水与拱坝、地基间的动力相互作用，提出了一种拱坝—可压缩库水—地基系统地震波动反应的时域显式分析方法.针对位于Ⅸ度地震设防区、坝高292m的小湾高拱坝，用本文方法进行了地震动力反应分析，得到如下结论：考虑库水可压缩性将显著降低对小湾拱坝抗震起关键控制作用的部位的动拉应力，降低幅值可达45%，表明附加质量模型过分夸大了小湾拱坝的地震动应力反应，对小湾拱坝的抗震安全评估是不合理的. |
| 英文摘要: |
| Based on the numerical modeling of the dyanmic interaction among arch dam-compressible water-foundation, an explicit analysis method for seismic response of arch dam-compressible water-foundation systems is proposed. The method is applied to calculated the seismic response of Xiaowan arch dam, 292m in height. It is concluded that the calculated dynamic tensile stress at crucial area of the dam is about 45% lower than that without consideration of compressiblity of water. it shows that the seismic stress in additional mass model is overestimated. |
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