Probabilistic corrosion fatigue life assessment of a suspension bridge instrumented with long-term structural health monitoring system

Advances in Structural Engineering - Tập 20 Số 5 - Trang 674-681 - 2017
X. W. Ye1, T. Liu1, YQ Ni2
1Department of Civil Engineering, Zhejiang University, Hangzhou, China
2Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong

Tóm tắt

The long-term performance of engineering structures in a corrosive environment will be significantly affected by the coupled action of corrosion and fatigue. In this article, a probabilistic corrosion fatigue analytical model is proposed by taking into account the effects of corrosion-induced reduction of the cross-sectional area and deterioration of the fatigue strength of structural components. The proposed model is exemplified to evaluate the probabilistic corrosion fatigue life of a typical welded joint in the suspension Tsing Ma Bridge instrumented with a long-term structural health monitoring system. A genetic algorithm–based mixture parameter estimation method is developed to facilitate the multimodal modeling of stress spectrum derived from the long-term monitoring data of dynamic strain. The achieved results demonstrate that with the increase in the service life, the reliability index of the investigated typical welded joint is dramatically reduced under the combined effect of corrosion and fatigue.

Từ khóa


Tài liệu tham khảo

10.1111/ffe.12144

10.1109/TAC.1974.1100705

Basquin OH, 1910, American Society for Testing and Materials, 10, 625

10.1016/j.strusafe.2008.04.001

10.2208/jsceseee.29.1s

10.1139/l01-007

10.1016/0142-1123(82)90018-4

10.1061/(ASCE)ST.1943-541X.0000992

10.1260/1369-4332.17.9.1299

10.1016/j.corsci.2010.10.007

Gong JX, 2000, China Civil Engineering Journal, 33, 50

10.5006/1.3283967

10.1016/j.strusafe.2013.06.005

10.1260/1369-4332.18.9.1355

10.1080/15732479.2014.948462

10.1002/stc.427

10.1016/j.engstruct.2014.07.039

Miner MA, 1945, Journal of Applied Mechanics, 12, 159, 10.1115/1.4009458

10.1016/S0013-7944(00)00057-6

10.1061/(ASCE)ST.1943-541X.0000250

10.1061/(ASCE)EM.1943-7889.0000313

10.5006/1.3577890

10.1016/S0951-8339(02)00028-X

10.1260/1369-4332.14.5.881

10.1016/S0142-1123(01)00139-6

10.1016/S0013-7944(98)00101-5

10.1016/S0142-1123(03)00020-3

10.1016/S0924-0136(01)00902-5

10.1016/S1359-6462(03)00365-8

10.1061/(ASCE)0733-9445(1987)113:7(1398)

10.1016/0951-8339(88)90009-3

10.1002/stc.33

Wong KY, 2009, Encyclopedia of Structural Health Monitoring, 1

10.1533/9781845696825.2.371

Wong KY, 2011, Monitoring Technologies for Bridge Management, 1

10.1016/j.ijfatigue.2014.11.003

10.1260/1369-4332.18.8.1257

10.1016/j.engstruct.2012.06.016

Ye XW, 2014, Mathematical Problems in Engineering, 956473

10.1016/j.engstruct.2014.04.004

Thông tin
Thông tin xuất bản

Advances in Structural Engineering

Tập 20 Số 5

674-681

Thông tin tác giả