Shaking table experiment of a recycled concrete block masonry building structure with a ‘self-contained’ structural system

Abstract

This paper proposed a ‘self-contained’ structural system for structural columns and ring beams and used recycled concrete blocks (RCBs) as wall materials. Based on this design concept, a full-scale model of a new masonry building structure was established. The Castaic wave, the Taft wave, and an artificial wave were sequentially input to the shaking table, and the effects of different ground motions on the structural model were simulated. The changes in the natural frequency and damping ratio of the test model and the acceleration, displacement, and strain responses of the structure were studied under different seismic wave excitations. Finally, the overall seismic resistance of the model was determined. The results showed that the ‘self-contained’ structure system exhibited excellent cooperative performance. Moreover, the test model can fully meet the degree-7 seismic fortification requirements, in which the damage sustained from small earthquakes is not substantial, the damage sustained from moderate earthquakes can be repaired, and the damage sustained from large earthquakes does not cause structural failure. The results showed that RCBs can replace ordinary concrete blocks in practical engineering projects. However, the construction measures for the door and window openings should be strengthened in actual projects.

Modeling of non-ductile RC structure under near-fault ground motions: A nonlinear finite element analysis

“…The acceleration recorded for each floor increased and, consequently, the displacement response continues to increase. This is in accordance with the research done by Ding et al (2020). The behavior of the 4 th to 6 th floor is still in a linear condition, so the deformation can be assumed to be zero.…”

“…Nonlinear analysis: 400 Gal. After the linear stage was applied, the building starts to gradually damage and this condition causes the structure to change from the linear to nonlinear phase as the lateral stiffness drops gradually (Ding et al, 2020). For the first stage of the nonlinear inelastic analysis, the 400 Gal Meinong earthquake ground motion was applied.…”

Experimental Study on Compressive Strength of Ultrahigh Performance Concrete Prefabricated Wall Structure

“…Ding X. studied the finite element modeling of the fabricated shear wall structure and its seismic performance, and the finite element results show that setting vertical joints has little effect on the seismic performance of prefabricated shear walls. When designing vertical joints, the shear bearing capacity of the vertical joints should be calculated and analyzed [7]. Ismail S. et al performed quasistatic loading on 4 hollow shear wall specimens connected by inserts, monotonic loading was carried out with two specimens, and extended analysis was carried out in combination with the finite element software ABAQUS.…”