A Study on the High Seismic Performance of RC Structural Walls under Reversed Cyclic Loading

A new type of precast steel reinforced concrete (PSRC) frame, which were composed of composite steel reinforced concrete (CSRC) beam, PSRC column and cast-in-situ (CIS) joint, were proposed in this paper. The assemble technique used in the ordinary steel structures were adopted in PSRC frames to improve the construction efficiency. The seismic performance of PSRC frame structures was investigated based on the test results of connections and frame. Firstly, full-scale internal connection specimens, including a CIS connection specimen RCJ-1 and a PSRC connection specimen PCJ-1, were tested under low reversed cyclic loading. Results revealed that both the specimens RCJ-1 and PCJ-1 exhibited similar performance in terms of loading capacity, stiffness degradation and energy dissipation. The ductility of specimen PCJ-1 was about 3.81, which was a little lower than the specimen RCJ-1. Then, a 1/3-scale PSRC frame structure specimen, namely PCF-1, was tested under low reversed cyclic loading. Results showed that the PSRC frame specimen PCF-1 was failed in mixed failure mechanism, which provide good energy dissipation capacity. The ductility coefficient of PCF-1 was about 3.45 indicating that the PCF-1 behaved in ductility manner. The results of this investigation could enrich the data available documenting the behavior of PSRC frame, and contribute to enlarge the application of PSRC frame structures in seismic zone.

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Performance of a transfer beam with hybrid reinforcement of CFRP bars and steel bars under reversed cyclic loading

Science and Engineering of Composite Materials ◽

10.1515/secm-2015-0035 ◽

2017 ◽

Vol 24 (4) ◽

pp. 621-630

Author(s):

Jin Chen ◽

Shiyong Jiang ◽

Xiangrong Zeng ◽

Ling Zhou ◽

Tao Sun ◽

...

Keyword(s):

Cyclic Loading ◽

Seismic Performance ◽

Flexural Property ◽

Static Test ◽

Reversed Cyclic Loading ◽

Vertical Loading ◽

Steel Bars ◽

Hysteretic Characteristics ◽

Hybrid Reinforcement ◽

Reversed Cyclic

AbstractHybrid carbon fiber reinforced plastic (CFRP) and steel bar reinforcement concrete were applied in a transfer beam. Three specimens (ZHL-2, ZHL-3, and ZHL-4) corresponded to different forms of reinforcement, reinforcement ratio, and reinforced root number, respectively. The pseudo static test of the three specimens was carried out under the condition of vertical loading and horizontal reversed cyclic loading. The flexural property and failure mode of the transfer beams were demonstrated. Further, the ductility, energy dissipation capability, hysteretic characteristics, structural yield mechanism, and failure mechanism were also studied. The exploration of these factors was aimed to study the bearing capacity and seismic performance of the transfer beam with hybrid CFRP and steel bars. The test results show that if both the upper and lower longitudinal reinforcements were replaced by CFRP bars with a symmetrical reinforcement, the mechanical property and deformation performance would be superior. The performance would be better than the reinforcements with single upper and lower replacement by CFRP bars. Both the upper and lower longitudinal bars of the transfer beam should be replaced by CFRP bars with a symmetrical form of reinforcement. The ductility performance would be better for the transfer beam with the hybrid reinforcement of CFRP bars and steel bars. It showed a seismic performance. The transfer beam with the hybrid reinforcement of CFRP bars and steel bars could meet the design requirements for the ductile frame “strong column, weak beam and strong node.”

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Seismic Performance of Nonprestressed and Prestressed HPC Frames under Low Reversed Cyclic Loading

Journal of Structural Engineering ◽

10.1061/(asce)st.1943-541x.0000367 ◽

2011 ◽

Vol 137 (11) ◽

pp. 1254-1262 ◽

Cited By ~ 3

Author(s):

Weichen Xue ◽

Bin Cheng ◽

Renguang Zheng ◽

Liang Li ◽

Jie Li

Keyword(s):

Cyclic Loading ◽

Seismic Performance ◽

Reversed Cyclic Loading ◽

Reversed Cyclic

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Study on Seismic Performance of a Two-Bay Two-Story RCF with Construction Joint under Low-Reversed Cyclic Loading

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.753-755.719 ◽

2013 ◽

Vol 753-755 ◽

pp. 719-723

Author(s):

Xi Kang Yan ◽

Kang Ma ◽

Cheng Dong ◽

Lei Wang ◽

Pei Chen

Keyword(s):

Energy Dissipation ◽

Cyclic Loading ◽

Seismic Performance ◽

Reinforced Concrete Frame ◽

Displacement Ductility ◽

Reversed Cyclic Loading ◽

Concrete Frame ◽

Construction Joint ◽

Hysteretic Performance ◽

Reversed Cyclic

Based on experiment of a two-bay two-story reinforced concrete frame with construction joint under low-reversed cyclic loading, hysteretic performance, displacement ductility, bearing capacity degeneration, rigidity degeneration, energy dissipation and displacement restoring capacity are studied systematically. The studies show that the frame with construction joint has not better seismic performance than the monolithic cast frame.

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