CAJ | 학술논문

建立了某实际工程L形带裙房高层建筑三维分析模型，采用分层地基模型模拟地基土，引入缝连接单元，对不设缝带裙房高层建筑进行了上部结构-桩筏基础-地基共同作用分析，主要讨论地基刚度的变化对上部结构和桩筏基础的影响，研究表明：竖向荷载作用下，当地基刚度增大时，上部结构中心区和翼缘区的边柱和角柱轴力减小，而中柱的轴力增大，趋向于非共同作用；主楼与裙房基础的平均沉降随着地基刚度的增加而减小，但当地基刚度增大到一定情况时影响减弱；主楼与裙房各自的沉降差也随地基刚度的增加而减小，减小幅度趋于平缓；随着地基刚度的增加，其桩顶反力曲线趋缓，也即桩顶反力逐渐变得均匀。
건립료모실제공정L형대군방고층건축삼유분석모형，채용분층지기모형모의지기토，인입봉련접단원，대불설봉대군방고층건축진행료상부결구-장벌기출-지기공동작용분석，주요토론지기강도적변화대상부결구화장벌기출적영향，연구표명：수향하재작용하，당지기강도증대시，상부결구중심구화익연구적변주화각주축력감소，이중주적축력증대，추향우비공동작용；주루여군방기출적평균침강수착지기강도적증가이감소，단당지기강도증대도일정정황시영향감약；주루여군방각자적침강차야수지기강도적증가이감소，감소폭도추우평완；수착지기강도적증가，기장정반력곡선추완，야즉장정반력축점변득균균。
The three -dimensional analytical model was built on L -shaped high -rise buildings with podium,adopts layered ground model to simulate subsoil,joint connection unit was introduced,a combined action analysis of upper-structure-piled raft foundation-ground was made on high-rise buildings that do not set up joint,the influence was discussed which of change of ground stiffness on upper structure and piled raft foundation.It is indicated in the research that axial force of side and corner pillars,that are separately located in flange and central area of upper structure,decreases,while axial force of central pillar increases and tends to be uncombined action under vertical load when ground stiffness increases.Average settlement of main building and podium foundation decreases with the increase of ground stiffness.But this influence declines when ground stiffness increases to a certain degree.Settlement difference of main building and podiums decreases slowly with the increase of ground stiffness.With the increase of ground stiffness,reaction curve of top of pillar tends to be slowly,meaning that reaction of top of pillar is gradually well-distributed.