地铁车辆段非共轴线全框支厚板转换层结构抗震性能分析  

Seismic Performance Analysis of Full-Frame-Supported Thick Slab Transfer Plate Structure with Skewed Grids Design Above Metro Depot

作　　者：齐旭东 高嵩岩 刘红波 杜鹏[2,4] 井司南 QI Xudong;GAO Songyan;LIU Hongbo;DU Peng;JING Sinan(China Railway Design Corporation,Tianjin 300308,China;School of Civil Engineering,Hebei University of Engineering,Handan 056038,China;School of Civil Engineering,Tianjin University,Tianjin 300072,China;Hebei University of Engineering Laboratory for Low-Carbon Construction and Resilience Enhancement of Construction Engineering,Handan 056038,China)

机构地区：[1]中国铁路设计集团有限公司,天津300308 [2]河北工程大学土木工程学院,河北邯郸056038 [3]天津大学建筑工程学院,天津300072 [4]河北工程大学河北省建筑工程低碳建造与韧性提升重点实验室,河北邯郸056038

出　　处：《工业建筑》2024年第11期189-195,共7页Industrial Construction

基　　金：国家重点研发计划资助(2018YFC0705500)。

摘　　要：厚板转换层允许盖体上下采用非共轴线的设计,具有充分发挥盖上建筑空间的优势,在工程中得到了广泛关注。但该结构体系应用时间短,缺乏针对非共轴线结构的抗震性能分析。因此以某地铁车辆段带厚板转换层的住宅楼为研究对象,该项目采用非共轴线的设计而导致厚板转换层传力机制复杂。设计实施了1/40比例尺的模拟地震振动台试验,研究了该结构在7度多遇至8度罕遇地震的动力特性及其响应情况。同时为进一步验证试验的准确性,对该原型结构进行了数值模拟分析。结果表明:加载至7度罕遇地震后,结构各项动力指标均在安全限值以内,整体抗震性能良好;加载至8度罕遇地震时,模型1阶自振频率衰减了27.93%,此时结构出现部分损伤,主要分布在上部塔楼,而厚板转换层作为关键构件整体无损坏,这符合全框支厚板转换结构预期的“强厚板转换层弱塔楼”的屈服破坏机制。The full-frame thick slab transfer plate structure enables a skewed grids design between superstructure and substructure,maximizing the architectural potential of the space above and gaining significant attention in engineering.However,its application is recent,and seismic performance analysis for skewed grids designs is lacking.This study investigates a residential building with a thick slab transfer plate structure above metro depot.Due to the complex force transfer mechanism,a 1/40 scale seismic shaking table test was conducted to study the dynamic characteristics and responses under 7 to 8-degree seismic conditions.Numerical simulations were also performed to verify the test results.Findings indicate that after a 7-degree rare earthquake,all dynamic indicators remained within safe limits,showing good seismic performance.Under an 8-degree rare earthquake,the first natural frequency decreased by 27.93%,causing some damage mainly in the upper tower,while the thick slab transfer plate structure remained undamaged.This aligns with the expected“strong transfer floor,weak tower”failure mechanism.The full-frame-supported thick slab transfer floor structure,which permits non-coaxial design between the upper and lower parts,has attracted attention for maximizing upper cover space.However,its application is recent,and seismic performance analysis for non-coaxial designs is lacking.This study investigated a residential building with a thick slab transfer floor in a metro depot.Due to the non-coaxial design,the force transfer mechanism was complex.A 1/40 scale seismic shaking table test was conducted to study the dynamic characteristics and responses under 7 to 8-degree seismic conditions.Numerical simulations were also performed to verify the test results.Findings indicated that after being subjeated a 7-degree rarely occurred earthquake,all dynamic indicators remained within safe limits,showing good seismic performance.Under an 8-degree rarely ocurred earthquake,the first natural frequency decreased by 27.93%,causin

关 键 词：地铁上盖转换层结构 厚板转换层 非共轴线设计 振动台试验 抗震性能 

分 类 号：U231[交通运输工程—道路与铁道工程] TU352.11[建筑科学—结构工程]