摘要
在H形钢柱安装中,常见的初始缺陷包括侧面垂直度、轴线偏差和截面形状缺陷。这些缺陷可能会导致应力集中,从而影响结构的稳定性。在单跨、双跨结构下,这2种初始缺陷的应力变化也不同。在单跨结构下,侧面垂直度缺陷会导致应力集中在缺陷处,轴线偏差缺陷则会导致应力集中在跨度中心位置。在双跨结构下,同样的初始缺陷会产生更小的应力,因为荷载被平均分配到两个跨度之间。除此之外,在双跨结构下,中柱初始缺陷产生的应力要低于左柱,这是因为中柱受到的荷载比左柱少,所以应力也会相应减小。这些初始缺陷可能会对结构的安全性产生影响,因此在设计和施工中需要考虑这些因素。总之,H形钢柱作为门式钢结构厂房的承重构件,具有一些初始缺陷,这可能会影响结构的稳定性。在设计和施工中需要注意这些因素,以确保钢结构建筑的安全性和稳定性。
Common initial defects in the installation of H-beam columns include side verticality,axis deviation,and section shape defects.These defects may lead to stress concentration,which may affect the stability of the structure.The stress changes of these two initial defects are different in single span and double span structures.In the single-span structure,the side verticality defect will lead to the stress concentration at the defect,and the axis deviation defect will lead to the stress concentration at the span center.In a two-span structure,the same initial defect creates less stress because the load is evenly distributed between the two spans.In addition,in a two-span structure,the stress generated by the initial defects of the middle column is lower than that of the left column,because the load on the middle column is less than that on the left column,so the stress will decrease accordingly.These initial defects may have an impact on the safety of the structure,so they need to be considered in design and construction.In conclusion,as a load-bearing member of a gantry steel building,H-beam columns have some initial defects,which may affect the stability of the structure.These factors need to be paid attention to in the design and construction to ensure the safety and stability of steel structure buildings.
作者
范安华
黄恒
伯冬冬
张明燕
王宝
Fan An-hua;Huang Heng;Bo Dong-dong;Zhang Ming-yan;Wang Bao
出处
《建筑技术开发》
2023年第S01期61-64,共4页
Building Technology Development
基金
云南省住建厅2023年科研开发项目(K00000069)
云南省住建厅2023年科技创新工程项目(S00000070)。
关键词
门式钢结构
H形钢柱
初始缺陷
应力分析
portal steel structure
H-shaped steel column
initial defect
stress analysis
