探讨深基坑基础防止钢筋笼柔性“S”变形的方法

Discussion on foundation foundation of deep foundation to prevent " S " deformation of flexible cage Methods

在榆横~潍坊1000千伏特高压交流输变电工程线路工程基础施工中,深基坑基础钢筋绑扎安装是一个难点,由于深基坑基础具有方量大、孔径大、基坑深等特点,决定了在钢筋绑扎安装时无法按照普通基础的方法进行绑扎,容易产生钢筋笼整体柔性"S"变形扭曲。为解决1000k V特高压线路工程深基坑基础钢筋笼整体柔性"S"变形扭曲现象,拟在深基坑基础钢筋绑扎安装中采用"将主筋吊起悬空绑扎和在坑壁设置控制点"的施工工艺,可以有效的解决深基坑基础钢筋笼整体柔性"S"变形扭曲难点。

In Yu-Heng ~ Weifang 1000 k V UHV AC Transmission Line project foundation construction, deep foundation pit steel reinforcement lashing installation is a difficult, because the foundation pit has a large square, large aperture, pit depth Characteristics, decided to banding in the installation of steel can not be carried out in accordance with the usual method of banding, tend to produce a steel cage overall flexible " S " distortion. In order to solve the deformation " S " distortion of the whole reinforced cage of deep foundation pit of 1000 k V UHV power line, it is proposed to adopt the method of " the main reinforcement is hoisted up and the control points are set up at the pit wall " Technology, can effectively solve the foundation of deep foundation pit cage flexible " S " distortion distortion difficult.