Experimental investigation of a single-yielding precast concrete beam–column connection with replaceable energy-dissipation connector

2021 ◽  
Vol 150 ◽  
pp. 106906
Author(s):  
Chao Tong ◽  
Jing Wu ◽  
Chunyu Li ◽  
Jianping Han ◽  
Zhiqiang Li
Keyword(s):  
Experimental Investigation ◽  
Energy Dissipation ◽  
Concrete Beam ◽  
Precast Concrete

Comparing the Seismic Performance of Beam-Column Joints with and without SFRC when Subjected to Cyclic Loading

2012 ◽  
Vol 626 ◽  
pp. 85-89 ◽  
Author(s):  
Kay Dora Abdul Ghani ◽  
Nor Hayati Hamid
Keyword(s):  
Energy Dissipation ◽  
Cyclic Loading ◽  
Seismic Performance ◽  
Experimental Work ◽  
Concrete Beam ◽  
Steel Fiber ◽  
Precast Concrete ◽  
Experimental Results ◽  
Column Joint ◽  
Initial Cracks

The experimental work on two full-scale precast concrete beam-column corner joints with corbels was carried out and their seismic performance was examined. The first specimen was constructed without steel fiber, while second specimen was constructed by mixed up steel fiber with concrete and placed it at the corbels area. The specimen were tested under reversible lateral cyclic loading up to ±1.5% drift. The experimental results showed that for the first specimen, the cracks start to occur at +0.5% drifts with spalling of concrete and major cracks were observed at corbel while for the second specimen, the initial cracks were observed at +0.75% with no damage at corbel. In this study, it can be concluded that precast beam-column joint without steel fiber has better ductility and stiffness than precast beam-column joint with steel fiber. However, precast beam-column joint with steel fiber has better energy dissipation and fewer cracks at corbel as compared to precast beam-column joint without steel fiber.

Development and experimental investigation of hybrid precast concrete beam–column joints

2020 ◽  
Vol 219 ◽  
pp. 110922
Author(s):  
Jianxin Zhang ◽  
Chuanlin Ding ◽  
Xian Rong ◽  
Hongwei Yang ◽  
Yanyan Li
Keyword(s):  
Experimental Investigation ◽  
Concrete Beam ◽  
Precast Concrete

scholarly journals A Novel Precast Concrete Beam–Column Connection With Replaceable Energy-Dissipation Connector: Experimental Investigation and Theoretical Analysis

2021 ◽  
Author(s):  
Chao Tong ◽  
Jing Wu ◽  
Chunyu Li
Keyword(s):  
Energy Dissipation ◽  
Concrete Beam ◽  
Load Capacity ◽  
Precast Concrete ◽  
Total Yield ◽  
Bending Moment ◽  
Structural Features ◽  
Precast Column ◽  
Vertical Slot ◽  
Cracking Pattern

Abstract In order to avoid the damage of the connection due to the overstrength of beam strength, and the alternation of the strength hierarchy in the structural system. The additional bending moment produced by the combined action of the pressure generated by the concrete compression zone and the tension generated by the reinforcements needs to be reduced. A novel precast concrete beam–column connection is proposed herein. In the proposed connection, the precast beam is laid on a steel corbel embedded in the precast column. A novel replaceable energy-dissipation connector (REDC) is placed at the bottom of the steel corbel, which ensures that it is in the same horizontal position aligned with the longitudinal reinforcement at the bottom of the connection. In addition, there is a narrow vertical slot adjacent to the column face. The total yield capacity of the top reinforcement is larger than that of the bottom REDC energy-dissipation connector. Theory study focused on the structural features and mechanical mechanism of this novel precast connection. Three low-cycle quasi-static loading tests were carried out on a single full-scaled specimen by replacing three REDCs with different sizes. The cracking pattern of this novel precast connection, and the effects of different parameters of the REDCs on the energy-dissipation capacity and load capacity of the connections were discussed. By performing a finite-element simulation, a method for reducing the additional bending moment and keeping the top reinforcements always in elastic was developed. In addition, the relevant design suggestions were provided. The conclusion shows that the seismic performance of this novel precast concrete beam–column connection is excellent. The positive and negative bending moments of novel precast concrete beam–column connection both reduce the additional bending moment. In view of this, the bending moment of the novel connection is a controllable variable.

An Experimental Investigation on Rc Concrete Beam By Replacing Steel Reinforcement

2018 ◽  
pp. 32-34
Author(s):  
T. N. Agrawal ◽  
Ms. M. K. Rana ◽  
Ms. S. K. Wagh ◽  
S. M. Patil ◽  
S. B. Waramwar ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Concrete Beam ◽  
Steel Reinforcement
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