纤维混凝土加固装配式框架结构体系节点性能分析
Performance Analysis of the Joints in Prefabricated Frame Structure System Strengthened with Fiber Reinforced Concrete
关键词：
装配式框架结构；梁柱节点；有限元模拟；纤维混凝土；加固；抗震性能
Key words：
Prefabricated frame structure; Beam column joint; Finite element simulation; Fiber reinforced concrete; Retrofitting; Seismic performance
刊期：
2022年第10期
DOI：
10.19761/j.1000-4637.2022.10.054.06
文章编号：
基金项目：
国家自然科学基金资助项目（51578160）；福州市科技计划项目（2021-Y-082）。
作者：
毛会敏1a，颜学渊2，刘旭宏1b，陈伟宏2，杨 国3
单位：
1.福建工程学院 a.生态环境与城市建设学院；b.土木工程学院 福建 福州 350118；2.福州大学 土木工程学院，福建 福州，350116；3.福建九鼎建设集团有限公司，福建 福州 350001
摘要
摘 要：进行了纤维混凝土加固装配式框架结构体系梁柱节点低周往复加载有限元模拟分析，得到了试件的破坏形态、滞回曲线。结果表明：节点的主要受损区域为梁端键槽区，采用纤维混凝土置换受损区域的混凝土可有效加固节点。其中，当采用聚丙烯纤维混凝土加固时，能恢复节点的抗震性能；当采用钢纤维混凝土、钢-聚丙烯纤维混凝土加固时，不仅可以恢复节点的抗震性能，还可以在一定程度上提高节点的抗震性能。
Abstract: The numerical method was adoptted to simulate the low-frequency cyclic loading of beam column joints of fiber reinforced concrete reinforced prefabricated frame structure system, and the failure patterns and hysteretic curves of the specimens were obtained. The results show that the main damaged area of the joint is the keyway area at the beam end, and using fiber reinforced concrete to replace the concrete in the damaged area can effectively strengthen the joint. When polypropylene fiber reinforced concrete is used to reinforce the joint, the seismic performance of the joint can be completely restored. When steel fiber reinforced concrete and steel-polypropylene fiber reinforced concrete are used to reinforce the joint, the seismic performance of the joint can not only be restored, but also be improved to a certain extent.
结论
有限元模拟结果表明，采用纤维混凝土置换梁端受损区混凝土可有效加固世构体系节点。其中，采用PFRC加固时，能完全恢复节点的抗震性能；采用SFRC、S-PFRC加固时，不仅能够恢复节点的抗震性能，还可以在一定程度上提高节点的抗震性能。
参考文献
[1] LI X L,WANG J,BAO Y,et al.Cyclic Behavior of Damaged Reinforced Concrete Columns Repaired with High-performance Fiber-reinforced Cementitious Composite[J].Engineering Structures,2017,136:26-35.
[2] 潘立.高强材料置换截面加固混凝土框架柱的研究[J].建筑结构,2009,39(3):88-91.
[3] 潘立.高强材料置换外周截面加固混凝土柱试验研究[J].建筑结构,2014,44(11):17-19.
[4] PERUMAL R.Correlation of Compressive Strength and Other Engineering Properties of High-performance Steel Fiber-reinforced Concrete[J].Journal of Materials in Civil Engineering,2015,27(1):04014114.
[5] JIN L,ZHANG R B,TIAN Y D,et al.Experimental Investigation on Static and Dynamic Mechanical Properties of Steel Fiber Reinforced Ultra-high-strength Concretes[J].Construction and Building Materials,2018,178:102-111.
[6] 梁宁慧,钟杨,刘新荣.多尺寸聚丙烯纤维混凝土抗弯韧性试验研究[J].中南大学学报(自然科学版),2017,48(10):2783-2789.
[7] QIN Y,ZHANG X W,CHAI J R,et al.Experimental Study of Compressive Behavior of Polypropylene-fiber-reinforced and Polypropylene-fiber-fabric-reinforced Concrete[J].Construction and Building Materials,2019,194:216-225.
[8] XU L H,LI B,DING X X,et al.Experimental Investigation on Damage Behavior of Polypropylene Fiber Reinforced Concrete Under Compression[J].International Journal of Concrete Structures and Materials,2018,12(1):1-20.
[9] 徐礼华,邓方茜,徐浩然,等.钢-聚丙烯混杂纤维混凝土柱抗震性能试验研究[J].土木工程学报,2016,49(1):3-13.
[10] AFROUGHSABET V,OZBAKKALOGLU T.Mechanical and Durability Properties of High-strength Concrete Containing Steel and pPolypropylene Fibers[J].Construction and Building Materials,2015,94:73-82.
[11] MONTEIRO V M D A ,LIMA L R,SILVA F D A.On the Mechanical Behavior of Polypropylene, Steel and Hybrid Fiber Reinforced Self-consolidating Concrete[J].Construction and Building Materials,2018,188:280-291.
[12] 张富文,李向民,王卓琳,等.纤维增强水泥基复合材料加固震损RC框架抗震性能试验研究[J].建筑结构学报,2017,38(6):61-69.
[13] SHIM C,KOEM C,SONG H,et al.Seismic Performance of Repaired Severely Damaged Precast Columns with High-fiber Reinforced Cementitious Composites[J].KSCE Journal of Civil Engineering,2018,22(2):736-746.
[14] ACHILLOPOULOU D V,KARABINIS A I.Assessment of Concrete Columns Repaired with Fiber Reinforced Mortar Through Damage Indexes and Numerical Model[J].Construction and Building Materials,2015,81:248-256.
[15] MEDA A,MOSTOSI S,RINALDI Z,et al.Corroded RC Columns Repair and Strengthening with High Performance Fiber Reinforced Concrete Jacket[J].Materials and Structures,2016,49(5):1967-1978.
[16] MA G,LI H.Experimental Study of the Seismic Behavior of Predamaged Reinforced-concrete Columns Retrofitted with Basalt Fiber-reinforced Polymer[J].Journal of Composites for Construction,2015,19(6):04015016.
[17] ABDULLAH M A H,ZAHID M Z A M,AYOB A,et al.Flexural Behavior of Fire-damaged Reinforced Concrete Beams Repaired with High-strength Fiber Reinforced Mortar[J].Journal of Structural Fire Engineering,2019,10(1):56-75.
[18] YAN X Y,WANG S G,HUANG C L,et al.Experimental Study of a New Precast Prestressed Concrete Joint[J].Applied Sciences,2018,8(10):1871.
[19] 黄灿灵.预制预应力混凝土装配整体式框架结构（世构体系）抗震性能研究[D].福州:福州大学,2017.
[20] 周灵哲.纤维混凝土加固世构体系性能分析[D].福州:福州大学,2020.
[21] QI A,LIU X H,XU R J,et al.A Precast Beam-column Joint Using an Innovative Friction Damper as a Connector: Experimental and Numerical Study[J].Structures,2022,35:968-989.
[22] BIRTEL V,MARK P.Parameterised Finite Element Modelling of RC Beam Shear Failure[C]//ABAQUS.Proceedings of the 2006 ABAQUS Users’ Conference.Cambridge:ABAQUS,2006:95-108.
[23] 颜学渊,周灵哲,祁皑,等.新型预制预应力混凝土框架结构有限元分析[J].地震工程与工程振动,2020,40(2):54-63.
引用本文
毛会敏,颜学渊,刘旭宏,等.纤维混凝土加固装配式框架结构体系节点性能分析[J].混凝土与水泥制品,2022(10):54-59.
MAO H M,YAN X Y,LIU X H,et al.Performance Analysis of the Joints in Prefabricated Frame Structure System Strengthened with Fiber Reinforced Concrete[J].China Concrete and Cement Products,2022(10):54-59.
上一个： 塑钢纤维增强核桃壳轻骨料混凝土的性能研究
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