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（1 同濟(jì)大學(xué)預(yù)應(yīng)力研究所， 上海 200092； 2 同濟(jì)大學(xué)先進(jìn)土木工程材料教育部重點(diǎn)實(shí)驗(yàn)室， 上海 200092； 3 中國建筑西南設(shè)計(jì)研究院有限公司， 成都 610041）

［摘要］采用ABAQUS軟件和清華大學(xué)開發(fā)的滯回材料本構(gòu)子程序PQ-Fiber對(duì)有粘結(jié)與無粘結(jié)混合配置預(yù)應(yīng)力筋混凝土梁在豎向低周反復(fù)荷載下的抗震性能進(jìn)行研究，重點(diǎn)從滯回性能、骨架曲線、耗能能力、延性、變形恢復(fù)能力等5個(gè)方面分析有粘結(jié)預(yù)應(yīng)力筋與無粘結(jié)預(yù)應(yīng)力筋相對(duì)含量對(duì)混合配置預(yù)應(yīng)力筋混凝土梁抗震性能的影響。研究發(fā)現(xiàn)，有粘結(jié)與無粘結(jié)混合配置預(yù)應(yīng)力筋混凝土梁（尤其是當(dāng)無粘結(jié)筋的配筋比例在30%以內(nèi)）的抗震性能是良好的。

［關(guān)鍵詞］有粘結(jié)； 無粘結(jié)； 混合配置； 抗震性能； ABAQUS

中圖分類號(hào)：TU378-2文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2018)08-0041-05

Seismic behavior study of hybrid reinforcement concrete beams with bonded and unbonded prestressed tendons under horizontal low cyclic loading

Xiong Xueyu1，2, Zhang Sen1,3

(1 Institute of Prestressed Structures, Tongji University, Shanghai 200092, China;  2 Key Laboratory of Advanced Civil Engineering Materials(Tongji University), Ministry of Education, Shanghai 200092, China;3 China Southwest Architectural Design and Research Institute Co.,  Ltd.,  Chengdu 610041, China)

Abstract:Seismic behavior of hybrid reinforcement concrete beams with bonded and unbounded prestressed tendons under horizontal low cyclic loading was studied using ABAQUS software and the hysteretic constitutive subroutine PQ-Fiber developed by Tsinghua University. Effects of relative content of bonded and unbonded prestressed tendons on seismic behavior of hybrid reinforcement prestressed concrete beams were studied from perspectives of hysteretic behavior, skeleton curve, energy dissipation capacity, ductility and resilience. Research results show that the seismic behavior of hybrid reinforcement concrete beams with bonded and unbonded prestressed tendons is good, especially when the reinforcement ratio of unbonded tendons is less than 30%.

Keywords:bonded; unbonded; hybrid reinforcement; seismic behavior; ABAQUS

*國家自然科學(xué)基金資助項(xiàng)目（５１１７８３２８，５１５７８４００）。

作者簡介：熊學(xué)玉，博士，教授，博士生導(dǎo)師， Email：xueyu@#edu.cn。