整体顶升法加固改造既有网架结构施工技术  

Construction Technology of Reinforcement and Transformation of Existing Grid Structure by Integral Lifting Method

作　　者：戴占彪 周陆洋 刘司佳 赵晓玉 DAI Zhanbiao;ZHOU Luyang;LIU Sijia;ZHAO Xiaoyu(Hebei Building Research Engineering Co.,Ltd.,Shijiazhuang Hebei 050020,China)

机构地区：[1]河北建研科技有限公司,河北石家庄050020

出　　处：《工程质量》2021年第5期9-13,共5页Construction Quality

基　　金：河北省建设科技研究指导性计划项目(2020-208)。

摘　　要：以既有某网架结构的加固改造工程为例,为满足结构高度方面的使用要求,结合该工程施工现场的条件、施工的难易程度和施工工期等因素,提出采用整体顶升法进行施工。根据网架顶升节点的位置和反力,工程选取了千斤顶+格构式钢柱进行整体顶升,并通过扩大原柱截面尺寸、增设型钢混凝土柱和混凝土梁等技术措施对结构进行整体加固改造,取得了良好的工程效果。Taking the reinforcement and reconstruction project of an existing grid structure as an example,in order to meet the requirements of structural height,combined with the construction site conditions of the project,the difficulty of construction and the construction period,it is proposed to adopt the overall lifting method for construction.According to the position and reaction force of the lifting node of the grid,jacks+lattice steel columns are selected for the overall lifting,and the overall structure is reinforced by technical measures such as expanding the size of the original column section,adding steel concrete columns and concrete beams,etc.The transformation has achieved good engineering results.

关 键 词：网架结构 整体顶升法 加固改造 施工工艺 

分 类 号：TU765[建筑科学—建筑技术科学]