Fatigue performance of tensile steel members strengthened with CFRP plates

被引：70

作者：

Bocciarelli, Massimiliano ^{[1
]}

Colombi, Pierluigi ^{[1
]}

Fava, Giulia ^{[1
]}

Poggi, Carlo ^{[1
]}

机构：

[1] Tech Univ Milan Politecn Milano, Dept Struct Engn, I-20133 Milan, Italy

来源：

COMPOSITE STRUCTURES | 2009年 / 87卷 / 04期

关键词：

Steel; CFRP plate; Double sided reinforcement specimen; Fatigue; S-N curve; DELAMINATION; DESIGN;

D O I：

10.1016/j.compstruct.2008.02.004

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

In this paper the fatigue behaviour of steel structures retrofitted by using FRP materials is investigated. Preliminary tests were performed at different loading conditions to assess the fatigue performance of unconditioned double sided reinforcement specimens. The stiffness degradation of the reinforced member due to progressive debonding of the adhesive was selected as an index for a subsequent and progressive global failure. Failure mechanisms were observed to start with initial debonding at the plate end and then failure propagated along the element in the interfaces. Visual inspection of the bonds after failure revealed that the adhesive/metal interface represents the weakest point of the reinforcing system. S-N curves were defined and the fatigue behaviour of the specimens was compared to the fatigue resistance of welded detail categories described in the Eurocode 3. The results showed that fatigue resistance of the bond between the steel plate and the CFRP plate is remarkably superior to that of welded cover plates (Eurocode 3 categories 36*-56*). (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：334 / 343

页数：10

共 25 条

[1] FATIGUE-STRENGTH OF ADHESIVELY BONDED COVER PLATES
ALBRECHT, P
[J]. JOURNAL OF STRUCTURAL ENGINEERING-ASCE, 1987, 113 (06): : 1236 - 1250
[2] *AM ASS STAT HIGHW, 1998, LOAD RES FACT DES LR
[3] BASSETTI A, 2000, BRIDG ENG C 2000 ACH
[4] CADEI JMC, 2004, STRENGHTHENING METAL
[5] *CAN RES NETW, 200001 CAN RES NETW
[6] Strengthening of tensile steel members and bolted joints using adhesively bonded CFRP plates
Colombi, P
Poggi, C
[J]. CONSTRUCTION AND BUILDING MATERIALS, 2006, 20 (1-2) : 22 - 33
[7] Plasticity induced fatigue crack growth retardation model for steel elements reinforced by composite patch
Colombi, P
[J]. THEORETICAL AND APPLIED FRACTURE MECHANICS, 2005, 43 (01) : 63 - 76
[8] Crack growth induced delamination on steel members reinforced by prestressed composite patch
Colombi, P
Bassetti, A
Nussbaumer, A
[J]. FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES, 2003, 26 (05) : 429 - 437
[9] Delamination effects on cracked steel members reinforced by prestressed composite patch
Colombi, P
Bassetti, A
Nussbaumer, A
[J]. THEORETICAL AND APPLIED FRACTURE MECHANICS, 2003, 39 (01) : 61 - 71
[10] Analysis of cracked steel members reinforced by pre-stress composite patch
Colombi, P
Bassetti, A
Nussbaumer, A
[J]. FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES, 2003, 26 (01) : 59 - 66

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