- 摘 要
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葉家喜， 孫燕娜， 張振興， 肖 健
（中國聯(lián)合工程公司，杭州 310022）[摘要] 進(jìn)行了3個(gè)方鋼管約束鋼筋高強(qiáng)混凝土( STRC)短柱及1個(gè)高強(qiáng)混凝土(SRC)短柱的對比試件試驗(yàn)研究。所有試件的剪跨比均為1.5。試驗(yàn)中的主要參數(shù)為軸壓比。試驗(yàn)結(jié)果表明，由于鋼管對核心混凝土的有效約束，核心高強(qiáng)混凝土柱的承載力、延性和耗能能力均顯著提高。隨著軸壓比的提高，STRC短柱的抗剪承載力明顯提高，延性有所下降。根據(jù)試驗(yàn)結(jié)果，建議了方鋼管約束鋼筋混凝土短柱抗剪承載力計(jì)算方法。
[關(guān)鍵詞] 方鋼管約束鋼筋高強(qiáng)混凝土；短柱；抗震性能
中圖分類號：TU398.7 文獻(xiàn)標(biāo)識碼：A 文章編號：1002-848X(2012) Sl-0750-04Seismic behavior of rectangular steel tube confined high strength reinforced concrete short columns
Ye Jiaxi, Sun Yanna, Zhang Zhenxing, Xiao Jian
( China United Engineering Corporation, Hangzhou 310022, China)Abstract: Three rectangular steel tube confined HRC(High Strength Reinforced Concrete) stub columns, and a contrastive hoope-refined HRC stub column were designed and tested. All of the 4 specimens had the same shear span ratio of l.5. In the test, the infection of axial compression ratio was focused on. The tests indicate that the core HRC stub columns have superior on deformation capability and aseismic performance due to the restraint by steel tube. The shear bearing capacity of STRC stub column is increased and ductility performance is decreased while axial compression ratio increases. Besed on the results of the test, the shear resistant calculate formula special for steel tube refined HRC stub columns was suggested.
Keywords: steel tube refined reinforced concrete; stub column; asecimic performance
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