Cylindrical Piers
Table 1: Cylindrical Piers: Limit state thresholds in terms of drift
| Engineering Demand Parameter: Drift (%) | |||||
|---|---|---|---|---|---|
| References | Limit States | Threshold Values | Description | Loading Type | Specimen Characteristics |
| Choi, E., Chung, Y.S, Park, C., Kim, D.J. (2013) | LS1 | Yielding point of system (bilin. curve) | Cyclic loading | ||
| LS3 | 15% drop of maximum lateral resistance, longitudinal bar buckling | ||||
| Haroun, M. A., Mosallam, A. S., Feng, M. Q., Elsanadedy, H. M. (2003) | LS3 | 20% drop of maximum lateral resistance, concrete crushing within the plastic hinge region, composite jacket failure, long. bar buckling | Cyclic loading | ||
| Li, Y.F., Hwang, J.S., Chen, S.H., Hsieh, Y.M. (2005) | LS3 | Concrete crushing, long. bars fracture, 40% drop in lateral resistance | Cyclic loading | ||
| Ma, R. and Xiao, Y. (1999) | LS1 | Yielding of longitudinal reinforcement | Cyclic loading | ||
| LS3 | De-bonding of lap-spliced longitudinal bars, 35% drop in lateral load capacity | ||||
| Sheikh, S. A. and Yau, G. (2002) | LS3 | Yield of spiral/ buckling of long. bars | Cyclic loading | ||
| - | |||||
| LS4 | Rupture of FRP | ||||
References
- Choi, E., Chung, Y.S, Park, C., Kim, D.J. (2013). Seismic performance of circular RC columns retrofitted with prefabricated steel wrapping jackets, Magazine of Concrete Research, Vol. 65, No. 23, pp 1429-1440, http://dx.doi.org/10.1680/macr.13.00177.
- Haroun, M. A., Mosallam, A. S., Feng, M. Q., Elsanadedy, H. M. (2003). Experimental Investigation of Seismic Repair and Retrofit of Bridge Columns by Composite Jackets, Journal of REINFORCED PLASTICS AND COMPOSITES, Vol. 22, No. 14, pp 1243-1268, https://doi.org/10.1177%2F0731684403035573
- Li, Y.F., Hwang, J.S., Chen, S.H., Hsieh, Y.M. (2005). A STUDY OF REINFORCED CONCRETE BRIDGE COLUMNS RETROFITTED BY STEEL JACKETS, Journal of Chinese Institute of Engineers, Vol. 28, No.2, pp 319-328, http://dx.doi.org/10.1080/02533839.2005.9670997.
- Ma, R. and Xiao, Y. (1999). Seismic Retrofit and Repair of Circular Bridge Columns with Advanced Composite Materials, Earthquake Spectra, Vol. 15, No. 4, pp 747-764.
- Sheikh, S. A. and Yau, G. (2002). Seismic Behavior of Concrete Columns Confined with Steel and Fiber-Reinforced Polymer, ACI Structural Journal, Vol. 99, No. 1, pp 72 – 80, https://doi.org/10.14359/11037.
Table 2: Cylindrical Piers: Limit state thresholds in terms of displacement ductility
| Engineering Demand Parameter: Displacement ductility | |||||
|---|---|---|---|---|---|
| References | Limit States | Threshold Values | Description | Loading Type | Specimen Characteristics |
| Choi, E., Chung, Y.S, Park, C., Kim, D.J. (2013) | LS1 | Yielding point of system (bilin. curve) | Cyclic loading | ||
| LS3 | 15% drop of maximum lateral resistance, longitudinal bar buckling | ||||
| Haroun, M. A., Mosallam, A. S., Feng, M. Q., Elsanadedy, H. M. (2003) | LS3 | 20% drop of maximum lateral resistance, concrete crushing within the plastic hinge region, composite jacket failure, long. bar buckling | Cyclic loading | ||
| Li, Y.F., Hwang, J.S., Chen, S.H., Hsieh, Y.M. (2005) | LS3 | Concrete crushing, long. bars fracture, 40% drop in lateral resistance | Cyclic loading | ||
| Ma, R. and Xiao, Y. (1999) | LS1 | Yielding of longitudinal reinforcement | Cyclic loading | ||
| LS3 | De-bonding of lap-spliced longitudinal bars, 35% drop in lateral load capacity | ||||
References
- Choi, E., Chung, Y.S, Park, C., Kim, D.J. (2013). Seismic performance of circular RC columns retrofitted with prefabricated steel wrapping jackets, Magazine of Concrete Research, Vol. 65, No. 23, pp 1429-1440, http://dx.doi.org/10.1680/macr.13.00177.
- Haroun, M. A., Mosallam, A. S., Feng, M. Q., Elsanadedy, H. M. (2003). Experimental Investigation of Seismic Repair and Retrofit of Bridge Columns by Composite Jackets, Journal of REINFORCED PLASTICS AND COMPOSITES, Vol. 22, No. 14, pp 1243-1268, https://doi.org/10.1177%2F0731684403035573
- Li, Y.F., Hwang, J.S., Chen, S.H., Hsieh, Y.M. (2005). A STUDY OF REINFORCED CONCRETE BRIDGE COLUMNS RETROFITTED BY STEEL JACKETS, Journal of Chinese Institute of Engineers, Vol. 28, No.2, pp 319-328, http://dx.doi.org/10.1080/02533839.2005.9670997.
- Ma, R. and Xiao, Y. (1999). Seismic Retrofit and Repair of Circular Bridge Columns with Advanced Composite Materials, Earthquake Spectra, Vol. 15, No. 4, pp 747-764.