CAJ | 학술논문

通过模拟土的非线性动力本构模型,选取合理的人工边界及耦合阻尼模型,建立了刚性桩复合地基与上部结构相互作用体系三维有限元动力分析模型.通过计算,对比了刚性桩复合地基与普通桩基对上部结构地震反应的影响异同,同时得到了土体模量与分层、基础埋深、桩径与桩长、砂石垫层模量与厚度以及上部结构特性等因素在考虑土-结构动力相互作用时对刚性桩复合地基抗震性能的影响及其基本规律,并与已有相关试验结果进行了对比,得到较好验证.研究结果为工程设计与工程应用提供了可借鉴的理论依据.
통과모의토적비선성동력본구모형,선취합리적인공변계급우합조니모형,건립료강성장복합지기여상부결구상호작용체계삼유유한원동력분석모형.통과계산,대비료강성장복합지기여보통장기대상부결구지진반응적영향이동,동시득도료토체모량여분층、기출매심、장경여장장、사석점층모량여후도이급상부결구특성등인소재고필토-결구동력상호작용시대강성장복합지기항진성능적영향급기기본규률,병여이유상관시험결과진행료대비,득도교호험증.연구결과위공정설계여공정응용제공료가차감적이론의거.
Through considering nonlinear dynamic soil model, reasonable artificial-boundary and coupling damping model, a 3-D finite element dynamic model of rigid pile composite foundation-superstructure interaction system, is established. Through calculations the different seismic responses of the structure with rigid pile composite foundation and with common pile foundation are compared At the same time, the influential factors and aseismic capability for rigid pile composite foundation is studied by considering soil modulus and soil layer, embedment depth, pile length and pile diameter, sand-gravel cushion thickness and modulus, structure characteristic, etc. All the results and conclusions will provide theoretical basis for engineering design and practice.