- 摘 要
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(上海大學土木工程系, 上海 200444)
摘要: 對于高層及超高層建筑,樓板作為主要水平構(gòu)件,不但起著承受豎向荷載并且傳遞水平荷載的作用,并且協(xié)調(diào)各抗側(cè)力構(gòu)件之間的變形. 目前常規(guī)的樓板設(shè)計只考慮豎向荷載對樓板的作用,沒有考慮水平荷載對樓板的影響. 結(jié)合某高層剪力墻結(jié)構(gòu)實例,采用有限元軟件,對薄弱處樓板在水平荷載作用下進行應(yīng)力分析,研究了樓板面外荷載對結(jié)構(gòu)整體的影響以及水平荷載對樓板內(nèi)力的作用,對樓板進行了樓板應(yīng)力校核與對比,并且進行承載力驗算,在應(yīng)力集中區(qū)域,通過增加附加鋼筋的方法來加強樓板,以保證樓板剛度. 結(jié)果表明,對于高層建筑結(jié)構(gòu),風荷載影響下的水平荷載作用對樓板應(yīng)力影響較大,樓板應(yīng)力集中部位應(yīng)進行加強以提高樓板承載力,保證結(jié)構(gòu)整體性與安全性.
關(guān)鍵詞: 樓板應(yīng)力分析; 面外剛度; 水平荷載; 樓板承載力
中圖分類號:TU318 文獻標志碼:A 文章編號:1002-848X(2023)11-0035-06
DOI:10. 19701 / j. jzjg. 20201703
Slab stress analysis of weak parts of high-rise building structure
WU Yijiao, ZHU Jiejiang
(Department of Civil Engineering, Shanghai University, Shanghai 200444, China)
Abstract: For high-rise and super-high-rise buildings, as the main horizontal member, slab not only bears the vertical loadand transfers the horizontal load, but also coordinates the deformation between the horizontal resisting members. Atpresent, the conventional design of slabs only considers the effect of vertical load, the effect of horizontal load is notconsidered. With the example of a high-rise shear wall structure, finite element software was used to carry out slab stressanalysis on the weak part under the horizontal load. The influence of out-of-plane load on the whole structure and the effectof horizontal load on the internal force of the slabs were studied. The slab stress was checked and compared, and thebearing capacity of the slabs was checked. In the stress concentration area, the floor was strengthened by adding additionalreinforcement to ensure the stiffness of the slabs. The results show that for high-rise building structures, the horizontal loadunder the influence of wind load has greater impact on the stress of the floor. The stress concentration of the floor should bereinforced to improve the bearing capacity of the slabs and ensure the integrity and safety of the structure.
Keywords:slab stress analysis; out-of-plane stiffness; horizontal load; bearing capacity of slab
第一作者:伍一嬌,碩士,主要從事結(jié)構(gòu)設(shè)計工作,Email:727106010@ qq. com.
[引用本文] 伍一嬌,朱杰江. 高層建筑結(jié)構(gòu)樓板薄弱部位應(yīng)力分析[J]. 建筑結(jié)構(gòu),2023,53(11):35-40,80. WUYijiao,ZHU Jiejiang. Slab stress analysis of weak parts of high-rise building structure[ J]. Building Structure,2023,53(11):35-40,80.
