Affiliation:
1. International Joint Lab for Eco-Building Materials and Engineering of Henan, North China University of Water Resources and Electric Power, Zhengzhou 450045, China
2. Collaborative Innovation Center for Efficient Utilization of Water Resources in Yellow River Basin, North China University of Water Resources and Electric Power, Zhengzhou 450046, China
3. Henan Fifth Construction Group, Zhengzhou 450007, China
Abstract
The seismic performance of prefabricated reinforced concrete shear walls is a key point in the safety of the whole assembly structure under earthquake actions. In this study, six specimens of reinforced concrete shear walls were assembled with a cast-in-place vertical joint with a straight, L, or convex shape. The specimens were tested using a low cyclic loading test under an axial compression ratio of 0.2 or 0.3. The stress process, failure pattern, and hysteretic curve of each specimen were measured. Combined with a numerical analysis using the finite element method, the variations in the bearing capacity, stiffness degradation, ductility, and energy dissipation capacity of the tested specimens were analyzed. Results showed that all specimens failed in a shear pattern without an obvious failure phenomenon along the vertical joint. The hysteresis curves exhibited an obvious pinch phenomenon and good deformation ability. The seismic behavior decreased in sequence for the shear walls assembled with a cast-in-place vertical joint with a straight, L, or convex shape, while a higher axial compression ratio improved the bearing capacity of the shear walls. The shear wall with an L-shaped vertical joint had similar seismic behavior to that with a straight vertical joint, but the shear wall with a convex vertical joint exhibited a decrease of 8.5% and 10.9% in bearing capacity, 18.2% and 1.2% in ductility, and 13.1% and 20.6% in energy dissipation, respectively, under an axial compression ratio of 0.2 and 0.3. The bearing mechanisms of shear walls with different vertical joints are explained with the numerical analysis of the stress vector maps of concrete and the stress cloud maps of reinforcements at different stress levels.
Funder
State Key Research and Development Plan, China
Doctoral Innovation Fund of NCWU, China
Subject
Building and Construction,Civil and Structural Engineering,Architecture
Reference27 articles.
1. (2016). Technical Standard for Assembled Buildings with Concrete Structure (Standard No. GB/T 51231-2016).
2. (2017). Standard for Design of Assembled Housing (Standard No. JGJ/T398-2017).
3. (2014). Technical Specification for Precast Concrete Structures (Standard No. JGJ 1-2014).
4. A dynamic simulation study on the sustainability of prefabricated buildings;Liu;Sustain. Cities. Soc.,2022
5. Yang, Y., Ding, X., Liu, Y., Deng, L., Lv, F., and Zhao, S. (2022). Lateral pressure test of vertical joint concrete and formwork optimization design for monolithic precast concrete structures. Buildings, 12.
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