Experimental Investigation on the Seismic Behavior of Newly-Developed Precast Reinforced Concrete Block Masonry Shear Walls

Abstract

Typically, a special type of concrete block with cleaning holes is used in the bottom layer of traditional reinforced masonry shear walls (RMSWs) for mortar cleaning and vertical rebar connection, which results in reduced integrity and weakened structural behavior. In this paper, a precast construction technology was introduced to overcome these shortcomings. The cleaning-hole blocks were eliminated in the newly-developed precast RMSWs. Quasi-static tests on two traditional and two precast fully grouted RMSWs were conducted. The results showed that the flexural capacity of precast walls exhibited about a 10% increase when compared to traditional RMSWs under the same axial compression. Precast RMSWs that failed in flexural mode showed favorable deformation capacity and the displacement ductility value corresponding to 15% strength degradation reached 4.9. The wall stiffness degraded rapidly to 50% of the initial stiffness, K 0 , at 0.2% drift and, at 0.5% drift, the corresponding stiffness decreased to about 21% K 0 at a more gradual rate. Furthermore, precast RMSWs exhibited significant energy dissipation capacity. The experiment suggests that precast RMSWs have a satisfactory seismic performance.

Study on Seismic Performance and Damage Analysis of Steel Plate Shear Wall with Partially Encased Composite (PEC) Columns

“…Steel plate shear wall is a kind of structure with high resistance to lateral force, which is suitable for the development of high-rise buildings [5][6][7][8]. Steel plate shear wall has been demonstrated with remarkable ability of seismic energy dissipation through the laboratory tests and aseismic implementations and have received much attention [9][10][11][12][13][14]. In 1994, Xue et al [15] found that the frame column should not only bear the vertical load but also bear the interlaminar shear force from the steel plate through the study of 4 trusses of steel plate shear walls with 3 spans and 12 floors.…”

Experimental Investigation into the Seismic Performance of Fully Grouted Concrete Masonry Walls Using New Prestressing Technology

“…Thus, the influence of the posttension duct cannot be ignored. Furthermore, studies on the seismic performance of reinforced concrete masonry structures concentrate on single-story walls [26][27][28][29], and little research has been carried out on collaborative work between two walls. Mavros et al [30] discussed shaking table tests on a full scale, two-story, reinforced masonry shear-wall structure, with two T-sectioned and one rectangular-section wall components.…”

Prediksi Kerusakan Tekan Bata Beton Berulang Akibat Beban Aksial

“…Sejak zaman kuno pasangan bata sudah banyak digunakan sebagai bahan bangunan termasuk sebagian besar warisan arsitektur dunia menggunakan konstruksi bata (Oliveira et al, 2006). Blok beton mempunyai daya dukung yang tinggi sehingga struktur pasangan bata dapat mengurangi biaya konstruksi (Xu et al, 2018). Konstruksi bata menggunakan kombinasi bata dan mortar yang kekuatan tekannya juga bergantung pada lekatan keduanya (Vyas & Reddy, 2010).…”