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L形方鋼管混凝土組合異形柱單向壓彎穩(wěn)定性研究*
張廣泰,李鳳彬,榮彬
摘 要

(新疆大學(xué)建筑工程學(xué)院, 烏魯木齊 830047

 

[摘要]在對(duì)構(gòu)件單向壓彎受力特點(diǎn)分析的基礎(chǔ)上,設(shè)計(jì)了L形方鋼管混凝土組合異形柱單向壓彎試件。通過壓彎試驗(yàn),得到了構(gòu)件的破壞形式、荷載豎向位移曲線、單肢撓度曲線和荷載應(yīng)變曲線。通過對(duì)我國(guó)現(xiàn)行的四本規(guī)程中的壓彎穩(wěn)定計(jì)算公式的計(jì)算結(jié)果進(jìn)行比較發(fā)現(xiàn),在計(jì)算開孔連接板連接的L形方鋼管混凝土組合異形柱的壓彎承載力時(shí),作為綴件的連接板對(duì)構(gòu)件壓彎承載力的貢獻(xiàn)不應(yīng)被忽略,應(yīng)采用整體式計(jì)算模型進(jìn)行計(jì)算。 CECS 1592004規(guī)程和GJB 41422000規(guī)程的計(jì)算結(jié)果與試驗(yàn)結(jié)果吻合良好。

 

[關(guān)鍵詞]方鋼管混凝土; L形異形柱; 單向壓彎試驗(yàn); 計(jì)算方法

 

中圖分類號(hào):TU398+.1      文獻(xiàn)標(biāo)識(shí)碼:A      文章編號(hào):1002-848X(2015)08-0069-05

 

Research on unidirectional compressionbending stability of L-shaped  specially-shaped column composed of concretefilled square steel tube

Zhang Guangtai, Li Fengbin, Rong Bin

 (College of Architectural and Civil Engineering, Xinjiang University, Urumqi 830047, China)

 

Abstract:Based on the analysis of the stress of  unidirectional compressionbending components,  Lshaped speciallyshaped columns composed of concretefilled square steel tubes under unidirectional compressionbending loading were designed. Through the compressionbending experiment,  failure modes,  curves of loading and vertical displacement,  deflection curves and loadingstrain curves for singlelimb columns were obtained. By comparing with the numerical results calculated by  formulas of the buckling stability from four current specifications in China, the contribution of the connecting plate as lattice component on the compressionbending bearing capacity of the component should not be ignored when calculating the compressionbending bearing capacity of  Lshaped speciallyshaped columns composed of concretefilled square steel tubes with  perfobond plate connection, and the integral calculation model should be adopted. The calculation results of CECS 1592004 specification and GJB 41422000 specification agree well with the test results.

Keywords:concretefilled square steel tube; Lshaped speciallyshaped column; unidirectional compressionbending experiment; calculation method

 

*新疆維吾爾自治區(qū)自然科學(xué)基金資助項(xiàng)目(2012331464)。

 

作者簡(jiǎn)介:張廣泰,教授,碩士生導(dǎo)師,Email:zgtlxh@126.com。

 

                                參考文獻(xiàn)

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6DL/T 50851999 混凝土組合結(jié)構(gòu)設(shè)計(jì)規(guī)程[S. 北京:中國(guó)電力出版社,1999.

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8GJB 41422000 戰(zhàn)時(shí)軍港搶修早強(qiáng)型組合結(jié)構(gòu)技術(shù)規(guī)程[S. 北京:解放軍總后勤部,2001.

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