砂井排水法在镇江电厂三期干煤棚工程中的应用  

APPLICATION OF SAND DRAIN GROUND TO INDOOR COAL STORAGE YARD(PHASE-Ⅲ)FOR ZHENJIANG ELECTRIC POWER PLANT

作　　者：邓文华[1] 刘轶[2] 

机构地区：[1]江西萍乡钢铁有限责任公司,萍乡337000 [2]中冶京诚工程技术有限公司,北京100176

出　　处：《工业建筑》2007年第z1期895-897,共3页Industrial Construction

摘　　要：基于轴对称单井理论,将砂井打设所导致整个地基竖向渗透性增强的影响等效在太沙基单向固结方程的渗透系数上,确定出地基的竖向等效渗透系数,从而将砂井地基转换成无砂井地基的固结排水问题。这样对整个土基进行真三维固结的有限元分析就可以预测砂井地基固结排水所导致的不均匀沉降、土体侧向变形以及土体内的孔压消散,最后,通过某工程实例验证了该方法的有效性。Upon the axial symmetric analysis of sand-drained ground,the influence of sand drain to all fowdy ation vertical permeability increasing is equal to the permeability coefficient of Terzaghi's one-dimensional consolidation equation by the numerical calculation,and then vertical equivalent permeability coefficient of sand-drained ground is obtained.A new method is described for consolidation analysis of sand-drained ground,that is,K_v is used to transform the consolidation problem of sand-drained ground to non-sand-drained ground,then FEM analysis is done.At last,the method introduced has been applied to a project,which demonstrates its effective simulation and validation on differential settlement,lateral deformation,radial seepage in the reinforcement ground and the diffusion of pressure in the soil of sand-drained ground.

关 键 词：地基 砂井地基 固结 等效渗透系数 

分 类 号：TU753[建筑科学—建筑技术科学]