大跨度叠层空腹桁架设计研究及工程应用  

Design and Engineering Application of Long-Span Multilayer Vierendeel Truss

作　　者：周越洲 杨慎银 李加成 ZHOU Yuezhou;YANG Shenyin;LI Jiacheng(Architectural Design&Research Institute of SCUT Co.,Ltd.,Guangzhou 510641,China)

机构地区：[1]华南理工大学建筑设计研究院有限公司,广州510641

出　　处：《结构工程师》2025年第1期196-205,共10页Structural Engineers

摘　　要：华中科技大学光电信息大楼F栋采用了钢筋混凝土框架-剪力墙结构体系,利用跨越4层设置的叠层空腹桁架以实现跨度达40m的大跨度结构。结构存在扭转不规则、偏心布置、楼板开大洞、承载力突变、构件间断和局部跃层柱等不规则项。对斜腹杆桁架与叠层空腹桁架进行方案比选,对大跨度叠层空腹桁架的受力机理、竖向荷载和竖向地震作用下的杆件内力、楼盖舒适度、复杂节点设计、施工技术要求、罕遇地震下的性能等进行了分析,提出了结构抗震加强措施。叠层空腹桁架结构方案能满足相关规范要求,达到预期抗震性能目标,且能更好地满足建筑功能及建筑造型要求。The frame-shear wall structure system was used in Photoelectric Information Building in Huazhong University of Science and Technology.A long-span structure with a span of 40 m was accomplished by using a multilayer vierendeel truss crossing 4 floors.The structure involved with structural irregularity problems such as the torsion irregularity,eccentric arrangement,slab with large opening,mutation of the bearing capacity,discontinuous structural elements,and regional skip-floor columns.A comparative study on the braced truss and multilayer vierendeel truss was conducted in this paper.The mechanical mechanism,internal forces of elements under vertical load and vertical seismic action,comfortability of the slab,design of the complex joint,the construction technique requirements,and behavior under rare earthquakes were analyzed.The measures were developed to reinforce the seismic capacity of the structure.The structure scheme of the multilayer vierendeel truss not only can meet the requirements of relevant codes and achieve the expected objective of seismic performance but also can meet the requirements of architectural function.

关 键 词：大跨度结构 斜腹杆桁架 空腹桁架 叠层空腹桁架 舒适度 动力弹塑性分析 抗震性能 

分 类 号：TU318[建筑科学—结构工程]