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  陳玲俐，于潔，王建

  （上海大學(xué)土木工程系，上海 200072）

 

［摘要］鋼筋混凝土框架節(jié)點(diǎn)受力情況復(fù)雜，破壞形式多樣，已有的節(jié)點(diǎn)抗震設(shè)計(jì)理論及規(guī)范中沒有給出明確的節(jié)點(diǎn)破壞模式分化的界定方式。選取了典型的足尺框架節(jié)點(diǎn)，分析了不同彎矩調(diào)幅、混凝土抗壓強(qiáng)度、軸壓比及剪跨比影響下節(jié)點(diǎn)的抗震性能，并在此基礎(chǔ)上提出了節(jié)點(diǎn)破壞模式分化參數(shù)的設(shè)計(jì)計(jì)算方法，進(jìn)一步明確了節(jié)點(diǎn)破壞模式分化的影響因素，為實(shí)現(xiàn)節(jié)點(diǎn)基于性能的抗震設(shè)計(jì)提供了理論基礎(chǔ)。

［關(guān)鍵詞］鋼筋混凝土框架節(jié)點(diǎn)；破壞模式；彎矩調(diào)幅；軸壓比；剪跨比

中圖分類號：TU375-4文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2012)07-0076-05

 

Chen Lingli, Yu Jie, Wang Jian

(Department of Civil Engineering, Shanghai University, Shanghai 200072, China)

 

Abstract: Under variety forms of reinforced complex forces, concrete frame joints have different failure modes. However, the existing seismic code and design theory do not give a clear specification for the joint failure mode defined differentiation. A group of typical full-scale RC joints were selected to analyze the seismic behavior under different moment redistribution, concrete compressive strength, axial compression ratio and shear span ratio. Based on analysis results, the failure mode differentiation method and the design parameters are given out. The factors for the joint failure mode are further made clear and it provides a good reference for the current design theory.

Keywords: reinforcement concrete frame joint; failure mode; moment redistribution; axial compression ratio; shear span ratio

作者簡介：陳玲俐，博士，副教授，Email：chenll@shu.edu.cn。

 

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