基于装配整体式框架结构的单元桁架支撑承载力计算及经济性分析  

Bearing Capacity Calculation and Economic Analysis of Truss Unit Based on Monolithic Precast Concrete Frame Structure

作　　者：吴先哲 张海燕 王杰 周冰凌 张兆强[2] WU Xianzhe;ZHANG Haiyan;WANG Jie;ZHOU Bingling;ZHANG Zhaoqiang(Sichuan Branch of China Construction Science&Technology Co.,Ltd.,Chengdu 610000,China;School of Civil Engineering and Architecture,Southwest University of Science and Technology,Mianyang 621000,China)

机构地区：[1]中建科技集团有限公司四川分公司,四川成都610000 [2]西南科技大学土木工程与建筑学院,四川绵阳621000

出　　处：《安徽建筑大学学报》2023年第1期24-29,共6页Journal of Anhui Jianzhu University

基　　金：四川省教育厅自然科学重大培育项目(18CZ0012)。

摘　　要：基于已有的装配整体式混凝土框架结构工程,采用两种规范计算方法,并结合有限元软件ANSYS,计算分析单元桁架支撑的承载力,并对比了该临时支撑方式与传统满堂支撑架和独立支撑的经济性。分析结果表明:单元桁架支撑具有良好的受力性能,能够满足施工过程中的承载力要求,且立杆计算长度和立杆拼接处的转动刚度对其承载力起主要控制作用,支撑在安装过程中应尤其注意立杆间的连接质量,保证立杆刚度的连续性;同时,相比于传统满堂支撑架和独立支撑,单元桁架支撑单位面积用钢量降幅可分别达到67.66%和47.53%,具有较大的成本优势,且随着建筑层高的增大,其成本优势更加明显。The bearing capacity of truss unit has been calculated and analyzed by using two calculation methods with different technical codes as well as the finite element software ANSYS based on monolithic precast concrete frame structure. The economic analysis of the truss unit has been compared with full formwork support and independent prop. The results show that in the construction,the truss unit has great bearing performance and the connection quality of the uprights must be ensured because the main factors affecting the bearing capacity of the uprights are the effective length and the rotational stiffness of the uprights. Besides,compared with the full formwork support and independent prop,the truss unit has greater cost advantage,as the reduction of steel consumption per unit area reaches 67.66% and 47.53%,respectively,and the advantage is more obvious with the increase of building height.

关 键 词：装配式建筑 临时支撑结构 单元桁架 承载力 有限元分析 经济性 

分 类 号：TU731.2[建筑科学—建筑技术科学]