碳纤维布加固震损方钢管混凝土框架边节点损伤演化分析

兰州理工大学学报 ›› 2025, Vol. 51 ›› Issue (6): 152-156.

碳纤维布加固震损方钢管混凝土框架边节点损伤演化分析

许成祥^*, 倪梦杰

武汉科技大学城市建设学院, 湖北武汉 430065

收稿日期:2022-08-06 发布日期:2025-12-31
通讯作者: 许成祥(1965-),男,安徽庐江人,博士,教授.Email:cx_xu@sina.com
基金资助:
国家自然科学基金(52178158)

Damage evolution analysis of CFRP-strengthened seismic-damaged exterior joints in composite frame consisting of CFSST columns and steel beams

XU Cheng-xiang, NI Meng-jie

School of Urban Construction, Wuhan University of Science and Technology, Wuhan 430065, China

Received:2022-08-06 Published:2025-12-31

摘要/Abstract

摘要： 为研究碳纤维布加固震损方钢管混凝土框架边节点在地震作用下的损伤演化过程,基于4组碳纤维布加固震损方钢管混凝土框架边节点在低周往复荷载作用下的破坏性试验,通过材料性能折减的方法考虑地震损伤的影响,运用有限元软件ABAQUS对碳纤维布加固震损方钢管混凝土框架边节点的地震损伤进行模拟分析.采用改进的双参数地震损伤模型计算其损伤指数,探讨碳纤维布加固震损方钢管混凝土框架边节点的损伤演化规律.结果表明:通过折减材料性能来模拟地震损伤的方法合理有效;选取的地震损伤模型,能够量化分析结构在各个阶段的损伤指数;得到的损伤演化曲线证明碳纤维布能有效降低方钢管混凝土框架边节点的地震损伤程度,与未加固的节点试件相比,经碳纤维布加固的节点试件抗震能力更强,震损加固节点的抗震能力也有明显恢复.

关键词: 碳纤维布加固, 方钢管混凝土-钢梁节点, 地震损伤, 损伤演化过程

Abstract: In order to study the damage evolution process of concrete-filled square steel tubular frame exterior joints strengthened with carbon fiber sheet under earthquake, based on the destructive tests of four groups of concrete-filled square steel tubular frame exterior joints strengthened with carbon fiber sheet under low cyclic loading, the influence of seismic damage was considered by the method of material performance reduction. The finite element software ABAQUS was used to simulate the seismic damage of concrete-filled square steel tubular frame exterior joints strengthened with carbon fiber sheet. The improved two-parameter seismic damage model was used to calculate the damage index and to examine the damage evolution characteristics of the specimens. The results show that the method of simulating seismic damage by reducing material properties is reasonable and effective. The selected seismic damage model can quantitatively analyze the damage index of the structure at each stage. The obtained damage evolution curve proves that the carbon fiber sheet can effectively reduce the seismic damage degree of the concrete-filled square steel tubular frame edge joints. Compared with the unreinforced joint specimens, the seismic capacity of the joint specimens strengthened by a carbon fiber sheet is stronger, and the seismic capacity of the earthquake-damaged reinforced joints is also significantly restored.

Key words: CFRP-strengthened, concrete-filled square steel tubular column-steel beam frame joint, seismic damage, damage evolution process

中图分类号:

TU398

许成祥, 倪梦杰. 碳纤维布加固震损方钢管混凝土框架边节点损伤演化分析[J]. 兰州理工大学学报, 2025, 51(6): 152-156.

XU Cheng-xiang, NI Meng-jie. Damage evolution analysis of CFRP-strengthened seismic-damaged exterior joints in composite frame consisting of CFSST columns and steel beams[J]. Journal of Lanzhou University of Technology, 2025, 51(6): 152-156.

参考文献

[1] 朱伯龙,刘祖华.建筑改造工程学[M].上海:同济大学出版社,1998.
[2] 张有才.建筑物的检测、鉴定、加固与改造[M].北京:冶金工业出版社,1997.
[3] 赵彤,谢剑.碳纤维布补强加固混凝土结构新技术[M].天津:天津大学出版社,2001.
[4] 吴波,王维俊.碳纤维布加固钢筋混凝土框架节点的抗震性能试验研究[J].土木工程学报,2005,38(4):60-65.
[5] 杨曌,凌之涵,叶蛟龙,等.碳纤维布加固震损装配整体式混凝土框架节点抗震性能试验研究[J].工业建筑,2021,51(7):185-193.
[6] 许成祥,彭威,许凯龙,等.碳纤维布加固震损方钢管混凝土框架边节点抗震性能试验研究[J].建筑结构学报,2014, 35(11):69-76.
[7] 韩林海,陶忠,王文达.现代组合结构和混合结构:试验、理论和方法[M].北京:科学出版社,2009.
[8] 宗周红,葛继平,杨强跃.反复荷载作用下方钢管混凝土柱与钢梁连接节点非线性有限元分析[J].建筑结构学报,2006,27(2):75-81.
[9] 李威.圆钢管混凝土柱—钢梁外环板式框架节点抗震性能研究[D].北京:清华大学,2011.
[10] 徐凌,宇翔,邸振禹.高效利用CFRP加固预裂混凝土梁[J].沈阳工业大学学报,2015,37(2):219-224.
[11] 王秀丽,周磊.泥石流冲击作用下CFRP加强型柔性索网体系动力响应分析[J].兰州理工大学学报,2021,47(1):136-143.
[12] 顾威,李宏男,张美娜.CFRP钢管混凝土轴压短柱混凝土本构关系[J].大连理工大学学报,2011,51(4):545-548.
[13] 许成祥,陈建权.方钢管混凝土柱-钢梁组合框架节点抗震性能试验研究[J].土木工程学报,2010,43 (S1):200-205.
[14] HAN L H,HUANG H,TAO Z.et al.Concrete-filled double skin steel tubular (CFDST) beam-columns subjected to cyclic bending[J].Engineering Structures,2006, 28(12):1698-1714.
[15] SCHNEIDER S P.Axially loaded concrete-filled steel tubes[J].Journal of Structural Engineering,1998,124(10):1125-1138.
[16] XU C X,PENG S,DENG J,et al.Study on seismic behavior of encased steel jacket-strengthened earthquake-damaged composite steel-concrete columns[J].Journal of Building Engineering,2018,17:154-166.
[17] PARK Y J,ANG A H.Mechanistic seismic damage model for reinforced concrete[J].Journal of Structural Engineering,1985,111(4):722-739.
[18] 刘杰东.震损钢筋混凝土框架滞回模型研究[D].重庆:重庆大学,2015.
[19] 牛荻涛,任利杰.改进的钢筋混凝土结构双参数地震破坏模型[J].地震工程与工程振动,1996,16(4):44-54.