| 吴先哲,张海燕,王杰,吴光伟,张兆强.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[J].安徽建筑大学学报,2022,30(): |
| 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 |
| 投稿时间：2021-11-05 修订日期：2021-12-24 |
| DOI： |
| 中文关键词: 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 |
| 英文关键词: assembled building, temporary support structure, truss unit, bearing capacity, finite element analysis, economy |
| 基金项目:四川省教育厅科研项目(18CZ0012) |
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| 中文摘要: |
| 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对单元桁架支撑的承载力进行了计算分析,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,单元桁架支撑相比于传统满堂支撑架和独立支撑均有着较大的成本优势,且随着建筑层高的增大,其成本优势更加明显。 |
| 英文摘要: |
| The bearing capacity of truss unit has been calculated and analyzed by using the calculation methods in different technical codes based on monolithic precast concrete frame structure. And the finite element software ANSYS has been used in checking the ultimate bearing capacity of truss unit. At last the economic analysis of truss unit has been compared with fastener steel tube full hall formwork support and independent prop. The analysis results show that: the truss unit has greet mechanical performance which can meet the requirements of bearing capacity in construction process, then the effective length and the rotational stiffness at the joint of standing tube play a major role in controlling its bearing capacity. In the installation process of the truss unit, special attention should be paid to the connection quality between standing tube to ensure the continuity of the rotational stiffness. At the same time, compared with the fastener steel tube full hall formwork support and independent prop, the truss unit has greater cost advantage, and with the increase of building height, its cost advantage is more obvious. |
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