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(重慶大學(xué)土木工程學(xué)院  400045)
【提要】  通過(guò)一個(gè)縮尺比例約為1∶4的搭接柱轉(zhuǎn)換結(jié)構(gòu)模型試驗(yàn)，研究了搭接柱的傳力機(jī)制、變形特征以及轉(zhuǎn)換搭接柱上、下層梁的受力特點(diǎn)。研究表明，轉(zhuǎn)換搭接柱剛度極大，上部豎向荷載以桁架模型傳至下層柱，是良好的豎向荷載轉(zhuǎn)換形式。轉(zhuǎn)換層上層梁偏心受拉，下層梁偏心受壓，能有效抵抗上部柱子軸力所形成的偏心彎矩。在總結(jié)了搭接柱轉(zhuǎn)換結(jié)構(gòu)各組成部分的受力變形特征后，提出了相應(yīng)的設(shè)計(jì)建議。
【關(guān)鍵詞】  搭接柱轉(zhuǎn)換結(jié)構(gòu)  傳力機(jī)制  受力變形特征  設(shè)計(jì)建議
Experimental Study on Vertical Load Conversion Bracket of the Upper Column Outsides the Low Column/Quan Xueyou,Kong Zhijian,Deng Fan,Chen Wenqin(College of Civ. Eng.,Chongqing Univ.,Chongqing 400045,China)
Abstract:Based on the experimental results of one 1/4scaled test of conversion column bracket, force transfer mechanism and deformation characteristic are studied and mechanical properties of floor beams at both upper and lower the conversion column bracket are presented. Research shows that conversion column bracket has enormous rigidity and the vertical load is  ransferred down to lower column by truss mechanism,which means the bracket is a good way for vertical load conversion.The upper floor beam is in tension and the lower is in compression,which gives efficiency to hold up the overturning moment caused by the outdrift vertical load.Comprehensive discussions on all parts of conversion column bracket have been made and corresponding suggestions for design have been recommended.
Keywords:conversion column bracket;mechanism of force transfer;deformation characteristic;design suggestions