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(1 重慶大學(xué)土木工程學(xué)院，重慶 400045； 2 貴州大學(xué)，貴陽(yáng) 550025)
［摘要］要深入了解梁-墻平面外連接節(jié)點(diǎn)的受力性能，特別是發(fā)生“拉脫破壞”的原因，需要明確平面外彎矩在剪力墻臨界截面上引起的彎矩和扭矩的傳遞比例。通過(guò)有限元計(jì)算，對(duì)影響剪力墻截面力分布和節(jié)點(diǎn)彎矩傳遞比例的主要因素，如梁、墻截面尺寸以及邊界條件等進(jìn)行了參數(shù)分析；在此基礎(chǔ)上，利用簡(jiǎn)化模型推導(dǎo)了節(jié)點(diǎn)彎矩傳遞比例的理論計(jì)算公式，并進(jìn)行了數(shù)值擬合；通過(guò)與分析結(jié)果和ACI無(wú)梁樓蓋相關(guān)計(jì)算公式的對(duì)比發(fā)現(xiàn)，ACI公式明顯低估了抗彎條帶的彎矩傳遞比例。
［關(guān)鍵詞］鋼筋混凝土；梁-墻直交節(jié)點(diǎn)；等效框架；彎矩傳遞比例；參數(shù)分析
Analysis on the moment transferring factor of RC out-of-plane beam-wall joint
Wang Zhijun1, Bai Jie2, Gao Qiaoling1, Bai Shaoliang1(1 College of Civil Engineering, Chongqing University, Chongqing 400045, China;2 Guizhou University,Guiyang 550025，China)
Abstract:In order to analyze the mechanical behavior of out-plane beam-wall joint, especially the reason of ‘pulling-out’ damage, the moment transfer factor of joint should be defined firstly. Using FEM analysis, the parametric study was carried out, to determine the dominant parameters influencing the distribution of sectional forces within the wall and the moment transfer coefficients. By the theoretical deduction, the formula for moment transfer factor was proposed and fitted with the analysis data, and comparison between the proposed formula and the ACI formula was also conducted. It is obvious that ACI formula somewhat underestimates the moment transferring factor.
Keywords:reinforced concrete; out-of-plane beam-wall joint; equivalent frame model; moment transfer factor; parameter analysis
*《混凝土結(jié)構(gòu)設(shè)計(jì)規(guī)范》修訂組和重慶市科委(07197)聯(lián)合資助。
作者簡(jiǎn)介：王志軍，博士，教授，博導(dǎo)，Email: zjwang@cqu.edu.cn。
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