第33卷一第6期2016年11月建筑科学与工程学报Journal of Architecture and Civil En g ineerin g Vol.33一No.6Nov.2016文章编号:1673-2049(2016)06-0088-10
收稿日期:2016-05-21基金项目:国家自然科学基金项目(51378110,51438003);江苏省 六大人才高峰 资助项目(JZ -007);江苏高校优势学科建设工程资助项目(CE02-1-4)作者简介:王一震(1990-),男,山东菏泽人,工学博士研究生,E -mail :sdk j 199017@https://www.doczj.com/doc/105072499.html, 三预应力节段预制拼装桥墩抗震性能研究综述
王一震1,王景全1,
2(1.东南大学混凝土及预应力混凝土结构教育部重点实验室,
江苏南京一210096;2.东南大学国家预应力工程技术研究中心,江苏南京一210096)摘要:为进一步推动预应力节段预制拼装桥墩在高烈度区桥梁工程中的应用,从自复位能力二耗能能力二底节段容许损伤能力和基于性能的抗震设计方法4个方面系统梳理和总结了各国学者开展的相关研究,并指出了当前研究存在的问题以及未来的发展方向三结果表明:无粘结预应力筋能提供更好的自复位能力,桥墩震后残余变形很小;相对于现浇桥墩,该形式桥墩耗能能力较差,需要设置专门的耗能装置,其中外置耗能装置震后可更换,更值得推广;预应力节段预制拼装桥墩鲁棒性差,必须注意提高底节段容许损伤能力;针对预应力节段预制拼装桥墩的基于性能抗震设计才刚刚起步,需要进一步发展三
关键词:桥墩;节段预制;拼装;预应力混凝土;自复位;耗能;抗震性能
中图分类号:TU378一一一文献标志码:A
Review of Seismic Performance of Prestressed Se g mental Precast and Assembled Piers
WANG Zhen 1,WANG Jin g -q uan 1,2
(1.Ke y Laborator y of C &PC Structures of Ministr y of Education ,Southeast Universit y ,Nan j in g 210096,Jian g su ,China ;2.National Prestress En g ineerin g Research Center ,Southeast Universit y ,Nan j in g 210096,Jian g su ,China )Abstract :In order to p romote the a pp lication of p restressed se g mental p recast and assembled p iers in hi g h seismicit y areas brid g e en g ineerin g ,the relevant researches were summarized s y stematicall y from four as p ects ,includin g self -centerin g ,ener gy dissi p ation ,dama g e tolerance of bottom se g ment and p erformance -based seismic desi g n ,and the existin g p roblems and future research directions were p ointed out.The results show that unbonded p restressed tendons can p rovide better self -centerin g ,and the residual deformation of p ier is ver y small after the earth q https://www.doczj.com/doc/105072499.html, p ared with the cast -in -p lace p ier ,the p restressed se g mental p recast and assembled p ier is p oor in ener gy dissi p ation ca p acit y and need to set u p a s p ecial ener gy dissi p ation device ,in which the external ener gy dissi p ation device can be re p laced after the earth q uake and is worth p o p ularizin g .The robust p erformance of p restressed se g mental p recast and assembled p iers is p oor ,which should be p aid attention to im p rove the allowable dama g e abilit y of the bottom section.The p erformance -based seismic desi g n of p restressed se g mental p recast and assembled p iers has j ust started and needs further develo p ment.万方数据