Simultaneously Consider the Coupling Effect of Horizontal and Rocking Motions for Simplified Lumped-Parameter Model of the Soil

• Main Authors: Sheng-Wei Wang, 王勝威
• Other Authors: Wen-Hwa Wu
• Format: Others
• Language: zh-TW
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/94100056562369558813

碩士 === 雲林科技大學 === 營建工程系碩士班 === 96 === Coupling efficient of horizontal and rocking motions for a foundation to act on base embedment add. However before investigate about to substitute of unbounded soil vibration of behavior for lumped parameter model in order to easy find efficient model, In general without considering the coupling effect and only considering horizontal and rocking vibrations on simple foundation. Therefore, the purpose of this study aim at single-direction base challenge question to this and especially deep embed foundation to provide reality engineering applied significance of lumped-parameter models. Based on the approximation by polynomial-fraction to represent the foundation stiffness of single-direction normalization, considering the coupled efficient of horizontal and rocking motion in this study to complicated question for a unit compound parallel type of systematic lumped-parameter models. This present new compound parallel type model for horizontal and rocking to use previously research group present single parallel model. By defining a error function at single-direction parallel type model, the optimal coefficient of the polynomials-fraction, application division operation and partial fractions expansion in polynomials, into to the sum linear polynomials and several of first-order and second-order partial. Because linear polynomial and first-order and second-order partial correspond to spring and damper to compose simplify vibration unit, base vibration unit for all lumped-parameter model of parallel. But new to develop compose parallel type model lumped-parameter model, at horizontal direction of spring and damper an element increase to design correspond base center line of bias distance is important to simulate coupling efficient. Application Compose parallel type model to rectangle foundation and square embedded and circular embedded foundation by simulation and verify effectiveness and accurate in models.