Seismic response of self-centering prestressed concrete moment resisting frames with web friction devices

Song, Lei; Guo, Tong; Cao, Ziping

doi:10.1016/j.soildyn.2015.01.018

Cited by 38 publications

(3 citation statements)

References 21 publications

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“…Although many experimental, numerical, and analytical studies have been conducted on the earthquake resilient RC structures (Priestley and Tao, 1993;Wolski et al, 2009;Gerami et al, 2013;Fakharifar et al, 2014;Gerami and Sivand-Pour, 2014;Song et al, 2014Song et al, , 2015Lu et al, 2015). Limited work has been reported on the progressive collapse performance of this type of structures.…”

Section: Introductionmentioning

confidence: 99%

Analytical Model for Multi-Hazard Resilient Prefabricated Concrete Frame Considering Earthquake and Column Removal Scenarios

Lin

et al. 2018

Front. Built Environ.

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Research on multi-hazard prevention and mitigation in building structures is the most recent developing trend in civil engineering. In this study, an analytical model is proposed to calculate the structural resistance of a type of multi-hazard resilient prefabricated concrete (MHRPC) frame under earthquake and column removal scenarios. The MHRPC frame is assembled using prefabricated RC beams and columns, unbonded post-tensioning (PT) tendons, energy-dissipating steel angles, and large rotational shear plates. According to the experimental results, the MHRPC frame exhibits the features of low damage and self-centering under seismic loading. Meanwhile, when subjected to column removal scenarios, the MHRPC frame is proven to demonstrate a high progressive collapse resistance. In order to calculate the seismic and progressive collapse resistance of the MHRPC frame, analytical models for the critical components in the MHRPC frame (PT tendons and steel angles) are compared and selected based on the experimental results and numerical simulations. Furthermore, calculation methods for the seismic and progressive collapse resistance of the MHRPC frame specimens are proposed. The calculation results are validated using the experimental results. This study could provide a reference for the design of MHRPC frame structures, considering both earthquake and progressive collapse.

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Section: Introductionmentioning

confidence: 99%

Analytical Model for Multi-Hazard Resilient Prefabricated Concrete Frame Considering Earthquake and Column Removal Scenarios

Lin

et al. 2018

Front. Built Environ.

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“…According to ASCE/SEI 41-06, three structural performance levels are adopted in this study, namely, Collapse Prevention (CP), Life Safety (LS) and Immediate Occupancy (IO) performance levels, with corresponding maximum allowable story drift ratios of 4%, 2% and 1%, respectively. To assess the possible benefits of reduced residual deformations of the SC frame, two performance levels associated with the residual story drift ratio are used, i.e., "Re-centering" and "Repairable" performance levels, with corresponding maximum allowable residual story drifts of 0.2% and 0.5%, according to the study in Song et al [9]. The "Re-centering" performance level is a damage state where the structure can return to its original vertical alignment with minimal residual drift.…”

Section: Earthquake Ground Motionsmentioning

confidence: 99%

Fragility analysis of the self-centering prestressed concrete frame with web friction devices

et al. 2019

Self Cite

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A novel self-centering prestressed concrete (SCPC) beam-column connection with web friction devices has been recently proposed for moment-resisting concrete frames. This paper presents the fragility analysis results of a SC concrete frame and a conventional reinforce concrete (RC) frame at various performance levels. Three performance limit states (i.e., Immediate Occupancy, Life Safety and Collapse Prevention limit states) are defined based on the peak story drift ratio and two other performance limit states (i.e., Re-centering and Repairable limit states) are defined based on the residual story drift ratio. Statistical analyses of the seismic demands reveal that the SC frame reduces the softening and dispersion of the residual story drift behavior. Fragility curves indicate that the SC frame experiences much smaller residual deformations and shows considerable reduction in the median fragility and probability of exceedance for the residual drift-related performance levels, as compared with the conventional RC frame.

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“…Similar conclusion was drawn by Morgen and Kurama [19] through a comparative assessment of the UPT frames with friction-damped systems and the conventional RC frames. More recently, Song et al [20] studied the behavior of SC concrete frames with web friction devices (WFDs), and both the structural and member seismic demands were evaluated.…”

Section: Introductionmentioning

confidence: 99%

Seismic Analysis of Low‐Rise Self‐Centering Prestressed Concrete Frames considering Soil‐Structure Interaction

Song

Guo

Shi

2019

Shock and Vibration

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In this study, the seismic behavior of low-rise self-centering (SC) prestressed concrete frames considering soil-structure interaction (SSI) is presented. For this purpose, a typical 4-story SC concrete frame, with and without flexible foundations, is analyzed through nonlinear dynamic analysis. Ground motion sets with two hazard levels are selected for analysis. A conventional reinforced concrete (RC) frame is also studied, and the structural demands of the RC and SC frames are compared in terms of peak and residual drifts, base shear, residual settlement, and rotation of foundation. The analysis results show that considering soil-structure interaction generally increases the peak and residual drift demands and reduces the base shear and connection rotation demands when compared to fixed base conditions. For the cases with and without flexible foundations, the SC frame is found to have comparable peak story drifts with the RC frame and have the inherent potential of significantly reducing the residual drifts. The seismic analysis results of the frames with flexible bases show that the RC and SC frames can experience foundation damage due to excessive residual foundation rotations after the maximum considered earthquake (MCE).

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Seismic response of self-centering prestressed concrete moment resisting frames with web friction devices

Cited by 38 publications

References 21 publications

Analytical Model for Multi-Hazard Resilient Prefabricated Concrete Frame Considering Earthquake and Column Removal Scenarios

Analytical Model for Multi-Hazard Resilient Prefabricated Concrete Frame Considering Earthquake and Column Removal Scenarios

Fragility analysis of the self-centering prestressed concrete frame with web friction devices

Seismic Analysis of Low‐Rise Self‐Centering Prestressed Concrete Frames considering Soil‐Structure Interaction

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