- 摘 要
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(蘭州理工大學(xué) 730050)
【提要】 將索斗拱腹桿空間組合桁架應(yīng)用于多層多跨工業(yè)建筑的樓板加固,對加固前后結(jié)構(gòu)的自振頻率、振動(dòng)速度、振動(dòng)加速度等參量進(jìn)行了測試與分析。工程實(shí)踐表明,對承受周期性豎向強(qiáng)激振作用的大跨樓板,可以采用索斗拱腹桿空間組合桁架技術(shù)進(jìn)行加固。提出的力學(xué)計(jì)算模型對實(shí)際工程有一定指導(dǎo)作用。
【關(guān)鍵詞】 組合桁架結(jié)構(gòu) 斗拱 加固 測試
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
*甘肅省自然科學(xué)基金暨中青年科技基金項(xiàng)目(3ZS041-A25-023)。
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