轨道交通上盖开发厚板转换全框支板柱结构抗震性能分析  

Seismic Performance Analysis of Full⁃Frame Supported Plate⁃Column Structure with Thick Plate Conversion Developed for Rail Transit Upper Cover

作　　者：尚凯 SHANG Kai(China Railway Fifth Survey and Design Institute Group Co.Ltd.,Beijing 102600,China)

机构地区：[1]中铁第五勘察设计院集团有限公司,北京102600

出　　处：《铁道建筑技术》2023年第12期6-9,95,共5页Railway Construction Technology

基　　金：中铁第五勘察设计院集团有限公司科技研发计划项目(T5Y2020⁃B08)。

摘　　要：结合工程实例,针对转换层上下部结构斜交布置的情况,提出一种厚板转换全框支板柱结构体系。对结构中存在的柱网斜交、刚度比难以满足、转换厚板跨度大及板柱节点抗震性能差等问题,注重结构概念设计,合理控制板柱截面,使结构刚度比、受剪承载力等满足规范限值,强化转换柱和厚板的力学性能,并建立4种不同力学模型进行有限元验证分析。结果表明,结构在小、中、大震下的抗震性能良好,均达到预设的抗震性能目标;对厚板板柱节点进行实体单元有限元分析和试验验证,并提出此类结构转换厚板高跨比和转换柱轴压比的建议值,可为类似工程提供参考。In view of the oblique arrangement of the upper and lower parts of the transfer layer,a thick plate transfer full⁃frame supported plate⁃column structure system was proposed.For the problems existing in the structure,such as column skewing,stiffness ratio difficulty to meet,large span of conversion thick plate and poor seismic performance of plate⁃column joints,emphasis was placed on structural conceptual design,reasonable control of plate and column cross sections,so that the structural stiffness ratio and shear capacity met the standard limits,and the mechanical properties of conversion column and thick plate were strengthened.Four different mechanical models were established for finite element verification analysis.The results show that the seismic performance of the structure under small,medium and large earthquakes is good,and the pre⁃set seismic performance targets are reached.Based on solid element finite element analysis and test verification,the proposed values of height⁃span ratio of thick plate and axial compression ratio of transfer column are proposed,which can provide reference for similar projects.

关 键 词：上下部结构斜交 厚板转换 全框支板柱结构 抗震性能 数值分析 

分 类 号：TU973.1[建筑科学—结构工程]