A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Cyclic Behavior of Corroded Reinforced Concrete Bridge Piers
AbstractCorrosion damage is one of the main problems affecting the durability of concrete structures. Several corroded reinforced concrete (RC) railway bridges are located in regions of high seismic risk. Corroded bridge piers are often subjected to dynamic axial loads, such as the vertical pounding that occurs during earthquakes or due to railway trains. Repeated axial loading was used to simulate this vertical pounding effect. Therefore, the seismic performance of corroded RC structures under repeated axial and horizontal cyclic loading is an urgent issue. To investigate the influences of steel corrosion and repeated axial loading on the seismic performance of a column pier, eight RC column specimens were experimentally investigated. The results indicated that corrosion significantly influences the yield strength and load bearing capacity of a column. The load bearing capacities of the corroded specimens decreased by 18.27% compared with noncorroded specimens when the longitudinal loss of steel mass was 7.16%. Repeated axial loading did not significantly influence the mechanical properties of the corroded RC piers. Cyclic tests were performed to validate a finite-element model that was used to assess the effects of corrosion level on the seismic performance of columns. The level of steel corrosion ranged from 0 to 28%. According to the finite-element analysis, the yield strength (35%) and ultimate displacement (34%) decreased with increasing corrosion.
Cyclic Behavior of Corroded Reinforced Concrete Bridge Piers
AbstractCorrosion damage is one of the main problems affecting the durability of concrete structures. Several corroded reinforced concrete (RC) railway bridges are located in regions of high seismic risk. Corroded bridge piers are often subjected to dynamic axial loads, such as the vertical pounding that occurs during earthquakes or due to railway trains. Repeated axial loading was used to simulate this vertical pounding effect. Therefore, the seismic performance of corroded RC structures under repeated axial and horizontal cyclic loading is an urgent issue. To investigate the influences of steel corrosion and repeated axial loading on the seismic performance of a column pier, eight RC column specimens were experimentally investigated. The results indicated that corrosion significantly influences the yield strength and load bearing capacity of a column. The load bearing capacities of the corroded specimens decreased by 18.27% compared with noncorroded specimens when the longitudinal loss of steel mass was 7.16%. Repeated axial loading did not significantly influence the mechanical properties of the corroded RC piers. Cyclic tests were performed to validate a finite-element model that was used to assess the effects of corrosion level on the seismic performance of columns. The level of steel corrosion ranged from 0 to 28%. According to the finite-element analysis, the yield strength (35%) and ultimate displacement (34%) decreased with increasing corrosion.
Cyclic Behavior of Corroded Reinforced Concrete Bridge Piers
Yang, Shuai (author) / Fang, Congqi / Yuan, Zhijie / Parsaeimaram, Mohammad
2017
Article (Journal)
English
BKL:
56.23
Brückenbau
Numerical Simulation of Hysteretic Behavior for the Corroded Reinforced Concrete Bridge Piers
| British Library Conference Proceedings | 2009
Lifetime Seismic Reliability Analysis of Corroded Reinforced Concrete Bridge Piers
| Springer Verlag | 2010
Lifetime Seismic Reliability Analysis of Corroded Reinforced Concrete Bridge Piers
| British Library Conference Proceedings | 2011
Cyclic behavior of RC hollow bridge piers with corroded rebars
| British Library Conference Proceedings | 2010