- 摘 要
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(兰州理工大学 730050)
【提要】 将索斗拱腹杆空间组合桁架应用于多层多跨工业建筑的楼板加固,对加固前后结构的自振频率、振动速度、振动加速度等参量进行了测试与分析。工程实践表明,对承受周期性竖向强激振作用的大跨楼板,可以采用索斗拱腹杆空间组合桁架技术进行加固。提出的力学计算模型对实际工程有一定指导作用。
【关键词】 组合桁架结构 斗拱 加固 测试
Strengthening Floor Using Cabletoukung Composite Truss Structure Under Dynamic Load/Song Yi,Yang Wenxia,Luo Weigang,Li Hengtang,Cao Hui (Lanzhou Univ. of Technology,Lanzhou 730050,China)
Abstract:The cabletoukung composite truss structure is used to strengthen the floor of multilayer industrial structure under dynamic load. The parameters of the free vibrating frequency,the forced vibrating speed and accelerate of the floor on vibrating loads are tested and contrasted between the reinforced floor and original one. The results indicate that the technique is effective for the large space floor under dynamic load.
Keywords:composite truss structure;cable;toukung;strengthening;test
*甘肃省自然科学基金暨中青年科技基金项目(3ZS041-A25-023)。