A Simple Method For Vibration Analysis Of Twin-tower High-rise Buildings With Enlarged Base

In recent decades, as the population rapid expansion and urbanization continuousimprovement, cultivated land per capita possession is becoming less and less. In thenear future, the high-rise buildings in China will get an unprecedented development. Inorder to solve the comprehensive function requirements and make the architectural formmore innovative, twin-tower high-rise building with an enlarged base will be the mainform of high-rise building, especially in high-rise residential area. The seismic responseof this complex high-rise structural system is not fully understood as yet, for manyearthquake damage phenomenon also can not give a reasonable explanation, thusly, thedynamic analysis of twin-tower high-rise building with an enlarged base is verynecessary.The dynamic analysis of the structure-foundation-soil interaction system oftwin-tower high-rise building with an Enlarged Base based on some assumptions andthe method of continuous equivalent stiffness are used in the analysis.The superstructureis simplified as a series parallel Timoshenko cantilever beams. Then, according to theHamilton principle, the differential equations and their corresponding boundaryconditions were derived. Finally, the equations of a twin-tower high-rise building withan enlarged base were solved based on the ordinary differential equation solver.The result indicates that the method contains fewer numbers of unknown functionsand it is considered as a precision and cost-effective method of calculation. It canprovide a reference for a twin-tower high-rise building with an Enlarged Base and aconjoined twin-tower high-rise building with an Enlarged Base in structural design,seismic analysis and overall performance evaluation.