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Frontiers of Structural and Civil Engineering

ISSN 2095-2430

ISSN 2095-2449(Online)

CN 10-1023/X

邮发代号 80-968

2019 Impact Factor: 1.68

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Frontiers of Structural and Civil Engineering  2018, Vol. 12 Issue (3): 318-330   https://doi.org/10.1007/s11709-017-0420-z
  本期目录
Effect of RC wall on the development of plastic rotation in the beams of RC frame structures
Amar KAHIL1(), Aghiles NEKMOUCHE2, Said BOUKAIS1, Mohand HAMIZI1, Naceur Eddine HANNACHI1
1. Civil Engineering Department, Faculty of Construction Engineering, University Mouloud Mammeri, Tizi-ouzou, 15000, Algeria
2. Civil Engineering Department, Faculty of Technology, University Abderrahmane Mira – Bejaia ,06000 Algeria
 全文: PDF(1883 KB)   HTML
Abstract：

The objective of this study is, to interpret the influence of reinforced concrete walls addition in reinforced concrete frame structures considering behavior laws that reflects the actual behavior of such structures, by means of Castem2000computer code (pushover analysis). A finite element model is proposed in this study, using the TAKEDA modified behavior model with Timoshenko beams elements. This model is validated initially on experimental model. Then the work has focused on the behavior of a RC frame with 3 levels and three bays to better visualize the behavior of plastic hinges. Once the plastic hinge control parameters are identified (plastic rotation, ultimate curvature), a strengthening by introduction of reinforced concrete walls (RC/wall) at the ends of the reinforced concrete frame (RC/frame) has been performed. The results show that these RC walls significantly improve the behavior, by a relocation of efforts towards the central part of the beams.
Key words： RC/frame    RC/wall    moment curvature    plastic rotation    plastic hinge    pushover analysis    global models
收稿日期: 2016-10-19      出版日期: 2018-05-22
Corresponding Author(s): Amar KAHIL   
 引用本文:   
. [J]. Frontiers of Structural and Civil Engineering, 2018, 12(3): 318-330.
Amar KAHIL, Aghiles NEKMOUCHE, Said BOUKAIS, Mohand HAMIZI, Naceur Eddine HANNACHI. Effect of RC wall on the development of plastic rotation in the beams of RC frame structures. Front. Struct. Civ. Eng., 2018, 12(3): 318-330.
 链接本文:  
https://academic.hep.com.cn/fsce/CN/10.1007/s11709-017-0420-z
https://academic.hep.com.cn/fsce/CN/Y2018/V12/I3/318
Fig.1  
Fig.2  
Fig.3  
Fig.4  
immediate occupancy (IO) life safety
(LS)		 collapse prevention
(CP)
plastic rotation angle (radian) 0.005 0.01 0.02
Tab.1  
Fig.5  
damage level by
FEMA 273		 left right
displacement
(m)		 load
(kN)		 displacement
(m)		 load
(kN)
Beam 1 Immédiate Occupancy?(IO) 0.0238529 271.194 0.0254487 278.969
Life Safety(LS) 0.036635 300.284 0.0382336 301.981
Collapse Prévention (CP) 0.0813928 324.017 0.0861865 325.569
Beam 2 Immédiate Occupancy?(IO) 0.0302407 292.475 0.0286425 289.795
Life Safety(LS) 0.0430299 305.803 0.0414311 304.575
Collapse Prévention (CP) 0.0909798 327.004 0.0861865 325.569
experimental Collaps 0.08617623 327.716 0.08617623 327.716
Tab.2  
Fig.6  
Fig.7  
Fig.8  
level beams RC frame RC wall
location absolute values
of fu (m−1)		 location absolute values
of fu (m−1)
Level 1 Beam 1 1 0.4137 1W 0.00409
2E 0.39732 2E 0.00318
Level 2 Beam 4 5 0.35388 5W 0.0051
6E 0.34522 6E 0.00459
Level 3 Beam 7 9 0.30619 9W 0.00437
10E 0.34522 10E 0.00215
Tab.3  
Fig.9  
level beams RC frame RC wall
location absolute values
of fu (m−1)		 location absolute values
of fu (m−1)
Level 1 Beam 3 3W 0.3972 3W 0.00314
4 0.4136 4E 0.00403
Level 2 Beam 6 7W 0.3451 7W 0.00455
8 0.3538 8E 0.00505
Level 3 Beam 9 11W 0.1208 11W 0.00213
12 0.30613 12E 0.00438
Tab.4  
Fig.10  
level beams RC frame RC wall
location absolute values
of fu (m−1)		 location absolute values
of fu (m−1)
Level 1 Beam 1 2W 0.3885 2W 0.00144
3E 0.3885 3E 0.00142
Level 2 Beam 4 6W 0.3379 6W 0.00288
7E 0.3378 7E 0.00287
Level 3 Beam 7 10W 0.0934 10W 0.00906
11E 0.0933 11E 0.00906
Tab.5  
level beams absolute values
of fu (m−1)		 values of qp calculated with finite element model (rad) qp according to FEMA 273
(rad)		 damage level
by FEMA 273
Level 1 Beam 1 1-2a 1 0.4137 0.10573 >qp (CP) collapse prévention
2E 0.39732 0.09881
Beam 2 2b-3a 2W 0.38854 0.09638
3E 0.38852 0.09594
Beam 3 3b-4 3W 0.39729 0.09827
4 0.41365 0.10411
Level 2 Beam 4 5-6a 5 0.35388 0.07966
6E 0.34522 0.07763
Beam 5 6b-7a 6W 0.3379 0.07587
7E 0.33789 0.07598
Beam 6 7b-8 7W 0.34519 0.07743
8 0.35383 0.07915
Level 3 Beam 7 9-10a 9 0.30619 0.06668
10E 0.34522 0.07855
Beam 8 10b-11a 10W 0.0934 0.00897 q (IO)<qp<q (LS) immédiate occupancy
11E 0.09339 0.00882
Beam 9 11b-12 11W 0.12084 0.0154 q (LS)<qp<q (CP) life safety
12 0.30613 0.06568 qp>q (CP) collapse prévention
Tab.6  
Fig.11  
level Beams Absolute
values of
fu (m−1)		 values of qp calculated
with finite element
model (rad)		 qp according to FEMA 273
(rad)		 Damage level
by FEMA 273
Level 1 Beam 1 1-2a 1W 0.00409 0.00088 qp (B)< qp<qp (IO) Immediate
Occupancy
2E 0.00318 0.00037
Beam 2 2b-3a 2W 0.00144 0.00006
3E 0.00142 0.00006
Beam 3 3b-4 3W 0.00314 0.00036
4E 0.00403 0.0006
Level 2 Beam 4 5-6a 5W 0.0051 0.00095 qp (B)< qp<qp (IO) Immediate
Occupancy
6E 0.00459 0.00076
Beam 5 6b-7a 6W 0.00288 0.00036
7E 0.00287 0.00036
Beam 6 7b-8 7W 0.00455 0.00075
8E 0.00505 0.00091
Level 3 Beam 7 9-10a 9W 0.00437 0.00074 qp (B)< qp<qp (IO) Immediate
Occupancy
10E 0.00215 0.00016
Beam 8 10b-11a 10W 0.00906 0.00011
11E 0.00906 0.00003
Beam 9 11b-12 11W 0.00213 0.00013
12E 0.00438 0.00075
Tab.7  
Fig.12  
Fig.13  
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