框剪結構與地基動力相互作用分析
康仲山 王克成
- 摘 要
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康仲山 （廣州市城鎮(zhèn)建筑設計院 510100）王克成 （西安理工大學 710048）[提要] 本文首次將模擬地基的映射動力無窮元與有限元耦合模型應用予框剪結構一地基系統(tǒng)的動力相互作用分析中。分析了Eg/Es, H/L等參數(shù)對上述動力耦合系統(tǒng)相互作用的影響，得出了一些有益的結論。
[關鍵詞] 動力無窮元 有限元 耦合 動力相互作用 框架剪力墻結構
The distinguishing features of the subject of this thesis are that the structure is a finite domain and the foundation is an infinite domain. The more rational numerical model for dynamic interaction problem of 2-D frame-shear wall structure and foundation system is presented. For the first time, the infinite ele-ment method was used to analyze the problem of coupling vibriation of 2-D frame-shear wall structure and foundation. Two coupling elements were provided to deal with the problem of the element linking
between structure and foundation by means of applying the transitional beam element and between frame and shear wall applying the primary and secondary node in ordor that finite element analysis of frame-shear wall structure would be more realistic and reasonable. On foundations of various stiffnesses, the natural virbration characteristics of 4-10 storeyed frame-shear wall structure-foundation system were evaluated at carrying harmonic in the top. An important result of dynamic interaction's effect has been achieved through analysing main parameters such as Young's modulus ration of foundation with structure and heigh-span ratio of frame-shear wall.
Keywords: dynamic infinite element; finite element; coupling; dynamic interaction; frame-shear will;
foundation
