Seismic behavior of masonry walls strengthened by precast reinforced concrete panels with different connection details

2021 ◽  
Vol 242 ◽  
pp. 112597
Author(s):  
Yongqun Zhang ◽  
Xuchuan Lin ◽  
Tao Wang ◽  
Konstantinos Skalomenos
Keyword(s):  
Reinforced Concrete ◽  
Seismic Behavior ◽  
Masonry Walls ◽  
Concrete Panels

Numerical Simulation of Masonry Walls Retrofitted by Prefabricated Reinforced Concrete Panels

2013 ◽  
Vol 351-352 ◽  
pp. 1514-1518
Author(s):  
Yong Qun Zhang ◽  
Tao Wang
Keyword(s):  
Reinforced Concrete ◽  
Seismic Performance ◽  
Masonry Wall ◽  
Masonry Walls ◽  
Force Transmission ◽  
Nonlinear Analyses ◽  
Concrete Panels ◽  
Seismic Design Code ◽  
Cast Concrete ◽  
Assembly Technology

Assembly technology using prefabricated reinforced concrete (RC) members can effectively improve the seismic performance of existing masonry buildings. In this study, an existing masonry wall is enhanced by two pieces of prefabricated RC panels bonded on both surfaces of the wall. In order to guarantee the co-action between RC panels and the masonry wall, three techniques are employed, specifically, RC dowelling keys, grouting agent, and post-cast concrete bands. To investigate the interaction and force transmission between the two components, this study builds sophisticated finite element models and conducts nonlinear analyses to simulate the quasi-static cyclic tests. It is demonstrated that the proposed retrofitting technology effectively improves the seismic performance of existing masonry walls. The strength of existing walls increases 3-4 times and the stiffness increases 2-3 times, so that the requirement of current seismic design code is satisfied.

scholarly journals BENEFIT FROM CHAINED MASONRY WALLS TO IMPROVE THE SEISMIC RESPONSE OF REINFORCED CONCRETE BUILDINGS

2021 ◽  
Vol 30 (2) ◽  
Author(s):  
Abdelkader Nour ◽  
Abdelkader Benanane ◽  
Humberto Varum
Keyword(s):  
Reinforced Concrete ◽  
Seismic Behavior ◽  
Lateral Displacement ◽  
Response Spectrum ◽  
Masonry Walls ◽  
Base Shear ◽  
Reinforced Concrete Buildings ◽  
Concrete Buildings ◽  
Finite Element Software ◽  
Seismic Loadings

The multiple earthquakes have proved the effect of chained masonry walls on the seismic behavior of multistoried reinforced concrete buildings. The chained masonry walls have been considered one of the types of masonry infill walls but without gaps. This participation came intending to study this effect through the modeling of several two-dimensional frames for a multistoried reinforced concrete building, taking into account the hollow brick walls, which represent the most common type in Algeria. We analyzed the proposed models using ETABS finite element software, relying on the response spectrum method and respecting the most important requirements according to the applicable Algerian Seismic Code. After analysis of the different models, the results have been compared according to the parameters of the period, base shear, lateral displacement, and stiffness. Through a critical synthesis of the results, we concluded that these walls could significantly affect the seismic behavior of this type of buildings. Moreover, the neglect of these walls in the modeling process can lead designers to have a false perception of the behavior of these buildings towards seismic loadings.    

Experimental Investigation of Seismic Behavior of a New Type Masonry Walls

2013 ◽  
Vol 639-640 ◽  
pp. 732-739
Author(s):  
Wei Chen ◽  
Fang Bo Wu ◽  
Xu Hong Zhou ◽  
Hai Lin Huang
Keyword(s):  
Experimental Investigation ◽  
Reinforced Concrete ◽  
Seismic Behavior ◽  
Seismic Resistance ◽  
Width Ratio ◽  
Masonry Walls ◽  
Reinforced Concrete Frame ◽  
Conventional Concrete ◽  
Experimental Parameters ◽  
New Type

Conventional concrete hollow blocks have vertical single or multiple holes and they have been extensively used in masonry structures and as infill walls in reinforced concrete frame structures. However, most masonry walls using conventional concrete hollow blocks have the shortcoming of poor seismic resistance. A new type concrete hollow block with horizontal-holes has been developed and it could significantly improve the seismic resistance of a masonry wall as well as simplify the construction processes. The new hollow blocks are very easy to build a wall in a construction site and, in particular, they enable a convenient construction of reinforced concrete (RC) horizontal strips in their horizontal cavities and such RC strips can be readily connected to the adjacent RC columns. This provides an innovative seismic resistant measure to enhance the seismic resistance of masonry walls. In order to evaluate the seismic behavior of the new type masonry walls, an experimental investigation was carried out and seven full scale wall specimens were tested under in-plane cyclic loading. The experimental parameters include the number of horizontal RC strips, strength of the hollow blocks, height/width ratio of a wall and, with or without a window opening in the wall. In this paper, the details of the experimental investigation and the main test results are presented and, the characteristics of the seismic behavior of these wall specimens are discussed in relation to the influence of the experimental parameters.

scholarly journals Evaluation of local damage to reinforced concrete panels subjected to oblique impact by soft missile

2019 ◽  
Vol 350 ◽  
pp. 116-127 ◽  
Author(s):  
Akemi Nishida ◽  
Zuoyi Kang ◽  
Minoru Nagai ◽  
Haruji Tsubota ◽  
Yinsheng Li
Keyword(s):  
Reinforced Concrete ◽  
Oblique Impact ◽  
Local Damage ◽  
Concrete Panels

Seismic behavior of steel reinforced concrete L-shaped columns under compression-bending-shear-torsion combined action

2021 ◽  
Vol 42 ◽  
pp. 102498
Author(s):  
Zongping Chen ◽  
Linlin Mo ◽  
Shengxin Li ◽  
Yuhan Liang ◽  
Dingyi Xu
Keyword(s):  
Reinforced Concrete ◽  
Seismic Behavior ◽  
Steel Reinforced Concrete ◽  
Combined Action
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