Reliability Analysis of Bond Behaviour of CFRP⁻Concrete Interface under Wet⁻Dry Cycles.
Reliability Analysis of Bond Behaviour of CFRP⁻Concrete Interface under Wet⁻Dry Cycles.
复制标题
干湿循环下CFRP-混凝土界面粘结行为可靠性分析
DOI：
10.3390/ma11050741
复制
发表时间：
2018-05-07
期刊：
影响因子：
--
通讯作者：
Yang T
中科院分区：
文献类型：
--
作者：
Liang H;Li S;Lu Y;Yang T
Effective bonding between adherents plays a key role in retrofitting concrete structures in civil engineering using fibre-reinforced polymers (FRPs). To ensure structural safety, it is critical to develop design codes, which account for uncertainties of materials, the environment, and load, to estimate bond behaviour under long-term exposure to harsh environments. Therefore, a reliability analysis was performed to study the bond behaviour of FRP–concrete interface under wet–dry cycles and sustained loading. Thirty double-lap, shear-bonded carbon FRP (CFRP)–concrete composite specimens were tested after wet–dry cycles and sustained loading exposure. The fracture energy Gf of the bond behavior between CFRP and concrete was directly obtained from the measured local bond-slip curves. Five widely used test methods were adopted to verify the possible distribution types of Gf. Based on the best fit distribution of Gf, a reliability index β was then calculated for the specimens. The effects of wet–dry exposure and sustained loading on β were analysed separately. The effects of the mean and standard deviation of the load on β were compared. It was found that the mean had a greater impact on reliability than the standard deviation, but neither changed the regulation of the exponential reduction of β with increasing wet–dry cycle time. Their impact was significant for a small number of wet–dry cycles but insignificant for more than 4000 wet–dry cycles.
登录
查看更多内容
循环荷载下外部粘结至混凝土的 CFRP 板的粘结滑移关系
DOI：
10.3390/ma11030336
发表时间：
2018-02-26
期刊：
Materials (Basel, Switzerland)
影响因子：
--
作者：
Li K;Cao S;Yang Y;Zhu J
通讯作者：
Zhu J
影响因子：
7.4
作者：
Mazzotti, C.;Savoia, M.;Ferracuti, B.
通讯作者：
Ferracuti, B.
影响因子：
6.3
作者：
Atadero, Rebecca A.;Karbhari, Vistasp M.
通讯作者：
Karbhari, Vistasp M.
影响因子：
4.6
作者：
Lee, Luke S.;Estrada, Hector;Baumert, Mike
通讯作者：
Baumert, Mike
影响因子：
8.1
作者：
Sadiq, R;Rajani, B;Kleiner, Y
通讯作者：
Kleiner, Y