884aa四虎影成人精品,99久久国产综合精品女图图等你,97在线观看永久免费视频,久久精品国产精品亚洲38,ⅵdeodesetv性欧美

    李紅明^1,2，  顧  盛¹
    （1 江蘇科技大學土木工程與建筑學院，鎮(zhèn)江212003；2同濟大學土木工程學院，上海200092）

[摘要] 巨型鋼框架預應(yīng)力復合支撐體系中剛性支撐與柔性拉索組合形成剛?cè)峒鏉膹秃现蜗到y(tǒng)，能緩解巨型桁架節(jié)點受力集中、提高巨型框架的抗側(cè)剛度，同時也將巨型梁豎向荷載以軸力形式通過巨型柱傳遞至基礎(chǔ)。通過論述該體系復合支撐內(nèi)力在豎向均布荷載作用下的調(diào)平機理，得出了通過調(diào)節(jié)拉索初拉力實現(xiàn)復合支撐內(nèi)力調(diào)平的結(jié)論。
[關(guān)鍵詞] 預應(yīng)力；鋼結(jié)構(gòu)；巨型結(jié)構(gòu)；復合支撐；初拉力；內(nèi)力調(diào)平
中圖分類號：TU393.2    文獻標識碼：A  文章編號：1002-848X(2011) S2-0111-03

Mecharusm of adjusting internal force about composite brace in vertical uniformly distributed load
    Li Hongming^1,2,  Gu Sheng¹
    (1 Civil Engineering Department, Jiangsu University of Science and Technology, Zhenjiang 212003, China; 2 Civil Engineering Department, Tongji University, Shanghai 200092, China)

Abstract: The composite brace in mega steel frame and pre-stressed composite brace structure, composed with rigid brace and flexibility cable, can alleviate mega truss stress concentration and improve the lateral stiffness of the mega frame, and it can transfer the vertical load in mega beam to base in the axial force, by way of mega column. The mecluuusm of adjusting intemal force about composite brace action in vertical uniformly distributed load was discussed. It is concluded that in vertical ruuformly distributed load, mechfuusm of adjusting intemal force can be enforced by adjusting the uutial prestress in the cable.
Keywords: prestress; steel structure; mega structure; composite brace; initial prestress; internal force adjusting