- 摘 要
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（江蘇科技大學(xué)土木工程系, 鎮(zhèn)江 212003）
［摘要］在現(xiàn)有門式剛架和預(yù)應(yīng)力技術(shù)研究的基礎(chǔ)上，提出全局布索預(yù)應(yīng)力剛架體系，該結(jié)構(gòu)相比索支承剛架增設(shè)了預(yù)應(yīng)力隅撐系統(tǒng)。采用數(shù)值分析方法研究了全局布索預(yù)應(yīng)力剛架體系在各種工況作用下的工作機理，并與門式剛架、索支承剛架的受力性能進行了對比研究。研究表明，索支部分對剛架在豎向荷載下的受力、變形性能影響較大，隅撐部分能有效改善剛架在風(fēng)荷載作用下的受力和變形性能，并在一定程度上提高結(jié)構(gòu)抗側(cè)能力，因此全局布索預(yù)應(yīng)力剛架體系適用于風(fēng)荷載占較大比例的情況。
［關(guān)鍵詞］門式剛架; 預(yù)應(yīng)力; 索支承; 隅撐
中圖分類號：TU394 文獻標(biāo)識碼：A 文章編號：1002-848X(2014)12-0100-04
Study of prestressed steel frame structural system with overall cable-supported plan
Yang Siqi, Guo Junyuan, Tang Baijian
(Civil Engineering Department, Jiangsu University of Science and Technology, Zhenjiang 212003, China)
Abstract: Based on the existing study of portal frame and prestressed technology, the prestressed steel frame structural system with overall cable-supported plan was proposed and prestressed knee-braced structural system was added compared with prestressed cable-supported steel frame. By the numerical analysis method, the working mechanism of prestressed steel frame structural system with overall cable-supported plan under various working conditions was studied. The mechanism performance of the structure was compared with portal steel frame and prestressed cable-supported steel frame. The study shows that the cable-supported part has great influence on force and deformation properties of the steel frame under vertical load. The knee-braced part effectively improves force and deformation properties under the wind load and improves the lateral resistance performance of the steel frame to a certain extent. In conclusion, prestressed steel frame structural system with overall cable-supported plan is suitable for the structure supported a large proportion of wind load in the whole loads.
Keywords: portal steel frame; prestressed; cable-support; knee-brace
*住建部科技計劃項目(2012-K2-28)。
作者簡介：楊思琦，碩士研究生，Email：mulan_sunny@126.com。
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