摘要
本文采用无质量地基模型,研究了在六种不同地基弹性模量的情况下,重力坝自振频率随地基边界范围变化的规律,得到了重力坝—地基动力相互作用分析中应选取的合理的地基边界范围.同时,还分析了坝—地基相互作用对坝体振型的影响.
In this paper the regularity of natural frequencies of gravity dam varying with the boundary size of the foundation are studied for six different elasticity modulus of the foundation by using the massless foundation model; andthen the resonable boundary sizes of the foundation to be selected in dynamic analysis of dam-fondation interaction are obtained. Furthmore, the effects of dam-foundation interaction on the modal shapes of the dam are analyzed.
