CAJ | 학술논문

建立了粉煤灰地基上高层建筑-桩筏基础-地基共同作用的数值分析模型，通过模拟不同距径比和桩长的桩筏基础，研究了筏板的受力响应问题。数值模拟分析表明在上部结构荷载作用下筏板及桩体周围的位移量较大，离桩筏基础越远位移量越小，筏板的沉降呈盆状；桩距径比越大筏板沉降量越大，桩长越大筏板沉降量越小。由于桩体轴力的作用，筏板边缘桩体位置处的剪应力出现集中，且筏板负弯矩有极大值；筏板内弯矩随着上部结构荷载的增大而增大；桩距径比越大筏板内的弯矩越小，桩长越大筏板内的弯矩越大。
건립료분매회지기상고층건축-장벌기출-지기공동작용적수치분석모형，통과모의불동거경비화장장적장벌기출，연구료벌판적수력향응문제。수치모의분석표명재상부결구하재작용하벌판급장체주위적위이량교대，리장벌기출월원위이량월소，벌판적침강정분상；장거경비월대벌판침강량월대，장장월대벌판침강량월소。유우장체축력적작용，벌판변연장체위치처적전응력출현집중，차벌판부만구유겁대치；벌판내만구수착상부결구하재적증대이증대；장거경비월대벌판내적만구월소，장장월대벌판내적만구월대。
A numerical analysis model was established to study structure-foundation-flyash interaction. Response of raft was studied through different distance diameter ratio and pile length. Numerical simulation show that, displacements near raft and pile are large,and the settlement on raft has basin shape. The raft settlement increases with distance diameter ratio,while decreases with pile length. Owing to axial load acted on raft,mises stress concentrates on raft edge,and hogging moment has a maximal value. Moment on raft is closely related to the upstructure load. Moment on raft decreases with distance diameter ratio,while increases with pile length.