摘要
文中基于某大型综合管廊实际工程,以通风口节点为例,选取合适的载荷工况,采用二维闭合框架法和三维精细化模型建模分析。计算结果表明,二维模型和三维模型计算内力差距较大,二维模型不能反应节点结构的受力特性,分析其原因是由于节点表现为空间结构特性,三维模型能较好的反应空间结构的受力情况,且节点顶板需当做双向板考虑,因此对于管廊特殊节点需采用三维模型进行结构受力性能及安全分析。
Based on the actual situation of the utility tunnel and a suitable load combination the 2D simplified model and 3D refined model of a vent node are established.The calculation results show that a large gap of internal forces exists between 2D model and 3D model.The reason is that the vent node has characteristics of spatial structure,so that 3D model can better reflect the structural mechanical characteristics in the principal stress direction.Therefore,it is necessary to use 3D model to analyses structural performance and safety of special node in utility tunnel.
作者
黄志平
HUANG Zhiping(Xiamen Municipal Engineering Design Institute Co.,Ltd.,Fujian Xiamen 361000,China)
出处
《低温建筑技术》
2020年第7期93-95,111,共4页
Low Temperature Architecture Technology
