International Journal of Earth Sciences and Engineering

Lai Xu ¹, Jin Chen ¹, Shijuan Wu ¹, Zeqi Jiang ², Zheng Jiang ³

Affiliations
1 Department of Civil Engineering, Logistical Engineering University, Chongqing-401311, CN
2 Department of Oil Application and Management Engineering, Logistical Engineering University, Chongqing-401311, CN
3 078 Engineering Headquarters, Xichang Satellite Launch Center, Xichang Sichuan-615000, CN

Abstract

The carbon fiber reinforced plastic (CFRP) bars were assembled on the top and bottom of the transfer beam. Pseudo-static test was carried out on the partially prestressed frame supporting transfer beam with CFRP bars. The cracks development law and reinforcement strain law of the specimens were analyzed. Moreover, the failure pattern, bearing capacity, hysteretic curve and seismic performance were also studied. The test results indicated that crack development in the middle region of the transfer beam could be effectively prevented by prestressing the CFRP bar, giving the formulated transfer beam a better bearing capacity. In addition, the yield-to- tensile ratio of 1.31 and the full hysteresis curve confirmed that the partially prestressed frame supporting transfer beam formulated with CFRP bars possessed satisfied seismic performance.

Keywords

Prestress, CFRP Bars, Frame Supporting Transfer Beam, Seismic Performance.

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Jin Chen ¹, Shiyong Jiang ¹, Xiangrong Zeng ¹, Can Li ¹, Wenwei Liang ¹, Bojun Huang ¹, Zheng Jiang ²

Affiliations
1 Department of Civil Engineering, Logistical Engineering University, Chongqing-401311, CN
2 078 Engineering Headquarters, Xichang Satellite Launch Center, Xichang Sichuan-615000, CN

Abstract

Under the effect of vertical load and horizontal-low-cyclic load, the whole process of nonlinear finite element numerical simulation analysis of one specimen for bonded fully prestressed CFRP bar with mixed steel reinforcement frame-supported shear wall structure and one specimen for bonded partially prestressed CFRP bar with mixed steel reinforcement frame-supported shear wall structure were conducted. It analyzed the whole process of the structure from concrete cracks to transfer beam yielding until the damage of transfer beam. The analysis also included hysteretic characteristics and skeleton curves. It then studied the plastic strain of full and partially prestressed CFRP bars with mixed steel reinforcement frame-supported shear wall structures and their cracks development law, damage modes, load capacity, ductility performances and seismic performances.

Keywords

Prestressed, Carbon Fiber Reinforced Plastics Bar (CFRP Bar), Mixed Reinforcement, Frame-Supported Shear Wall, Seismic Performance.

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