龙门吊轨道软弱地基变形及加固的数值分析

Numerical analysis of deformation and reinforcement of soft ground for the rail mounted container gantry crane

为了获得滨海相沉积软土条件下轨道式龙门吊的地基的变形和加固参数,采用有限元数值方法对龙门吊走行轨天然及处理后地基在一定设计荷载下的沉降变形与承载能力进行了分析,获得了考虑地基的沉降变形量和强度要求的不同设计荷载下的地基加固处理后所需达到的相关力学参数。研究结果表明:随着地基加固的增强,龙门吊两端的沉降差逐渐减少,地基的承载力也在逐渐增加。基础的左右边界附近均有一定量的隆起,在地基处理时,有必要适当扩大建筑基础下地基的处理范围。

In order to obtain the deformation and consolidated parameters for the foundation of the rail mounted container gantry crane on marine soft soil,the settlement and bearing capacity of the natural and composite foundation of the rail mounted container gantry crane under design load were analyzed by the finite element method on the basis of geological data and foundation treatment.The relationship of deformation modulus and foundation bearing capacity was obtained by considering the strength of the foundation and the settlement.It was shown that the differential settlement decreases and the bearing capacity of foundation was strengthened with the increase of ground strength.There was much eminence near the left and right boundary of basis.The treatment range extension of foundation under the basis should be properly extended.