【摘要】 井筒式地下连续墙基础是近年来出现的一种较新颖新的深基础形式,其封闭的结构形式,可合理利用墙体本身和内部土芯共同承担上部结构的荷载。为了研究井筒式地下连续墙基础的竖向承载特性,根据井筒中土体可能的运动和受力状态,结合不同的假定条件,用荷载传递法分析不同状态下的墙身内力和墙顶位移,将其受力变化过程分为三阶段:弹性剪切阶段、弹塑性剪切阶段和塑性剪切阶段,分析了不同受力阶段下的墙身内力和位移及其影响因素,并探讨了这些因素对荷载传递的影响。最后将荷载传递法分析一例实际工程,并与实测结果进行了对比,吻合较好。更多还原

【Abstract】 Closed diaphragm wall foundation is a new form of deep foundation in recent years,whose closed form of structure is reasonably applied to assume upper structure load by wall and inner soil core.To study vertical bearing behaviors of shaft diaphragm wall foundation,and based on the possible soil core motion and force-carrying state,and different assumptions under this condition,it analyses the internal force situation and the wall top displacement using load transfer method under different conditions,which divides its force-carrying states into three sections: the elastic-shear stage,the elastic-plastic shear stage and the plastic shear stage,and analyzed the impact of factors about the axial force and displacement,discussing their influence on the load-transfer.And finally the load-transfer method is applied in the project to obtain more consistent results compared with actual engineering test results.更多还原