- 摘 要
-
（1 西安理工大學(xué)土木建筑工程學(xué)院， 西安 710048； 2 寧波市建筑設(shè)計(jì)研究院有限公司， 寧波 315012；3 西安建筑科技大學(xué)土木工程學(xué)院， 西安 710055）
［摘要］對17根型鋼再生混凝土柱進(jìn)行了低周反復(fù)荷載試驗(yàn)，觀察了型鋼再生混凝土柱的破壞形態(tài)，分析了其滯回曲線特性。在此基礎(chǔ)上，研究了型鋼再生混凝土柱的延性特征，主要分析了再生粗骨料取代率、軸壓比、體積配箍率和剪跨比對柱位移延性系數(shù)的影響，并給出了柱的極限位移角限值。結(jié)果表明：型鋼再生混凝土柱主要發(fā)生剪切斜壓破壞、彎剪破壞及彎曲破壞；除高軸壓比試件外，大剪跨比柱滯回曲線飽滿，位移延性系數(shù)均大于3，表現(xiàn)出較好的抗震性能；柱延性隨著再生粗骨料取代率和軸壓比的增大而降低，但隨著體積配箍率及剪跨比的增大而增大；柱極限位移角均值約為1/40，表現(xiàn)出較好的位移變形能力。
［關(guān)鍵詞］型鋼再生混凝土; 延性; 抗震性能; 低周反復(fù)荷載
中圖分類號：TU398 文獻(xiàn)標(biāo)識碼：A 文章編號：1002-848X(2014)15-0051-06
Ductility analysis on steel reinforced recycled concrete columns under the low cyclic loading
Ma Hui1, Li Ning2, Xue Jianyang3
(1 School of Civil Engineering and Architecture, Xi’an University of Technology, Xi’an 710048, China; 2 Ningbo Limited Company of Architectural Design and Research Institute, Ningbo 315012, China; 3 School of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China)
Abstract: Seventeen steel reinforced recycled concrete columns were tested under the low cyclic loading. The failure modes and hysteresis curves characteristics of columns were studied. On this basis, the ductility characteristics of columns were researched. The influences of different design parameters such as the recycled coarse aggregate replacement ratio, axial compression ratio, stirrup ratio and shear-span ratio on the displacement ductility coefficient of columns were analyzed. The ultimate lateral angle limiting values of columns were also given. The results show that the shear diagonal compression failure, shear-bending failure and bending failure are the main failure patterns of columns. The hysteretic curves of columns with a large shear-span ratio are plump and the average value of displacement ductility coefficient of columns is more than 3, which shows the good seismic performance. With the increment of recycled coarse aggregate replacement ratio and axial compression ratio, the ductility of columns reduces. On the contrary, the ductility of columns increases with the increment of volume stirrup ratio and shear-span ratio. The ultimate average lateral angle limiting values of columns is about 1/40, which shows the good lateral deformation capacity.
Keywords: steel reinforced recycled concrete; ductility; seismic performance; low cyclic loading
*國家自然科學(xué)基金（51178384），西安理工大學(xué)博士科研啟動(dòng)基金（118-211310）。
作者簡介：馬輝，博士，講師，Email：mahuiwell@163.com。
參考文獻(xiàn)
［1］肖建莊.再生混凝土［M］. 北京:中國建筑工業(yè)出版社, 2008.
［2］RAO M C, BHATTACHARYYA S K, BARAI S V. Behaviour of recycled aggregate concrete under drop weight impact load［J］. Construction and Building Materials， 2011, 25(1):69-80.
［3］胡瓊,盧錦.再生混凝土柱抗震試驗(yàn)性能［J］. 哈爾濱工業(yè)大學(xué)學(xué)報(bào)：自然科學(xué)版, 2012, 44(2):23-27.
［4］薛建陽, 崔衛(wèi)光, 陳宗平,等. 型鋼再生混凝土組合柱軸壓性能試驗(yàn)研究［J］. 建筑結(jié)構(gòu), 2013, 43(7):73-76.
［5］薛建陽, 王秀振, 陳宗平, 等. 型鋼再生混凝土梁受剪性能試驗(yàn)研究［J］. 建筑結(jié)構(gòu), 2013, 43(7): 69-72.
［6］余曉峰.再生混凝土損傷本構(gòu)與不同取代率下密肋復(fù)合墻抗震安全性研究［D］. 西安: 西安建筑科技大學(xué), 2009.
［7］趙鴻鐵. 鋼與混凝土組合結(jié)構(gòu)［M］. 北京: 科學(xué)出版社, 2001.
- 下載地址
-
