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(廣州容柏生建筑結(jié)構(gòu)設計事務所, 廣州 510170)
[摘要]基于框架傾覆力矩的統(tǒng)一解法,結(jié)合工程實踐給出3種框剪梁的定義,分別對典型框架-剪力墻結(jié)構(gòu)和框筒結(jié)構(gòu)進行框剪梁可視化識別,并按統(tǒng)一解法計算其框架傾覆力矩占比,與抗規(guī)法及目前常用的軸力法進行對比分析。結(jié)果表明:統(tǒng)一解法是合理可行的框架傾覆力矩計算方法;只計入剪力墻與框架柱(或斜撐)的框剪梁定義2會顯著低估框架傾覆力矩,定義1與定義2結(jié)果差異不大,建議采用定義1。同時對框支剪力墻結(jié)構(gòu)框支框架的傾覆力矩進行了舉例計算和分析,也驗證了統(tǒng)一解法的合理可行。
[關(guān)鍵詞]傾覆力矩; 框架-剪力墻結(jié)構(gòu); 框筒結(jié)構(gòu); 框支剪力墻結(jié)構(gòu)
中圖分類號:TU973, TU318文獻標識碼:A文章編號:1002-848X(2020)04-0034-10
Application of unified solution method of moment-resisting\|frame′s overturning moment on typical structure
Chang Lei, Cui Jidong, Liao Yun, Zhou Ding, Li Shengyong
(RBS Architectural Engineering Design Associates, Guangzhou 510170, China)
Abstract:Based on the unified solution method for calculation of moment-resisting-frame′s overturning moment (abbrev. MOTM), three definitions of the frame-shear beam were given with the engineering practice. Visual identification was conducted on frame shear beams of typical frame shear wall structures and frame-corewall structures, and the MOTM′s proportion was calculated by the unified solution method. The method was compared with the seismic design method and the commonly used axial force method respectively. The results show that the unified solution method is reasonable and feasible to calculate the MOTM, and the definition 2 of frame shear beam which only includes beams between shear wall and column (or brace) will significantly underestimate the MOTM, and definition 1 is recommended because there is little difference between definition 1 and definition 2. At the same time, the overturning moment of the frame-supported shear wall structure was calculated and analyzed with an example, to prove the reasonability and feasibility of the unified solution method.
Keywords:overturning moment; frame shear wall structure; frame-corewall structure; frame-supported shear wall structure
作者簡介:常磊,博士,高級工程師,Email:changlei@gzrbs.com。