Homogenization strategy for brick masonry walls under in-plane loading

Peng, Bin; Wang, Dongdong; Gang, Zong; Zhang, Yumei

doi:10.1016/j.conbuildmat.2017.12.133

Cited by 17 publications

(7 citation statements)

References 29 publications

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“…The dimensions of the walls were 1990 × 1490 × 240 mm and a constant vertical pre-compression of 0.3 f cm was applied on the top edges using a rigid concrete beam. f cm is the compressive strength of the masonry unit and was equal to 10 MPa the in study of Peng et al [48]. Therefore, the pre-compression of these models was 3 MPa, which is a relatively high pre-compression.…”

Section: Validation Of Mp Modeling With Experimental Datamentioning

confidence: 87%

“…A constant 0.3 MPa compression load is applied to the top surface of the wall in vertical direction using a rigid steel beam during the experiments. The wall was completely fixed on a rigid foundation using specifically conceived connectors [48]. Experimentally, another masonry wall was tested, labeled as J2G, with dimensions of 1000 × 990 × 100 mm, containing a rectangular central opening and a width/height ratio of 0.99 [49].…”

Section: Validation Of Mp Modeling With Experimental Datamentioning

confidence: 99%

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Application of Artificial Neural Network to Predict Load Bearing Capacity and Stiffness of Perforated Masonry Walls

et al. 2021

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Perforations adversely affect the structural response of unreinforced masonry walls (UMW) by reducing the wall’s load bearing capacity, which can cause serious structural damage. In the absence of a reliable procedure to accurately predict the load bearing capacity and stiffness of perforated masonry walls subjected to in-plane loadings, this study presents a novel approach to measure these parameters by developing simple but practical equations. In this regard, the Multi-Pier (MP) method as a numerical approach was employed along with the application of an Artificial Neural Network (ANN). The simulated responses of centrally perforated UMW by the MP method were validated utilizing full-scale experimental walls. The validated MP model was used to generate a simulated database. The simulated database includes results of analyses for 49 different configurations of perforated masonry walls and their corresponding solid masonry walls. The effect of the area and shape of the perforations on the UMW’s behavior was evaluated by the MP method. Following the outcomes of the verified MP method, the ANN is trained to develop empirical equations to accurately predict the reduction in the load bearing capacity and initial stiffness due to the perforation of UMW. The results of this study indicate that the perforations have a significant effect on the structural capacity of the UMW subjected to in-plane loadings.

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Section: Validation Of Mp Modeling With Experimental Datamentioning

confidence: 87%

Section: Validation Of Mp Modeling With Experimental Datamentioning

confidence: 99%

Application of Artificial Neural Network to Predict Load Bearing Capacity and Stiffness of Perforated Masonry Walls

et al. 2021

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“…Similar to how the laying of joints must be observed when laying bricks [4], enlarged brick blocks are installed according to the system of the corresponding wall of the same width [15]. Laying of blocks is done with dressing of joints in the following order: on solid sections of walls, the blocks of the upper row should overlap the blocks of the lower row by at least ¼ the length of the block, and for blocks shorter than one meter at least 25 cm.…”

Section: Methodsmentioning

confidence: 99%

Enlarged brick blocks as an alternative to masonry

2020

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Brick structures are one of the most common and useful construction materials. However, brick laying consists of the most labor-intensive processes with the largest part of manual works. The main purpose of the research is to find an alternative technology for the brick structures construction that have geometric and physical parameters of brickwork, the processes of which are less labor-intensive and more mechanized. Using factory-made enlarged brick blocks was suggested in the article as an alternative. A brick block is a factory - made element of a brick wall structure that is installed in the design position by crane equipment. By reducing the part of manual labor in installing the brick block, the total duration of construction is reduced while maintaining the final result – a brick wall. The research method was a comparative analysis of the resulting indicators of construction of structures made of individual bricks and installation of enlarged brick blocks. As a model for comparative analysis, a brick wall of specified parameters was proposed, on the basis of which calculations were made. The results show diagrams of labor and material resources spent on the construction of the wall for the two technologies under consideration. Based on the results obtained, we can conclude that it is possible to use enlarged brick blocks of high factory readiness as an alternative to masonry.

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“…The nonlinear mechanical characteristics of all masonry types were determined by the application of method of homogenization in combination (Psycharis et al 2010) with the EC6 norm (EC6, 1996). Homogenized properties are used by various researchers in the study of masonry structures (Luis et al 2018;Di Nino and Luongo 2019;Peng et al 2018;Malena et al 2019;Kujawa et al 2020).…”

Section: Finite Element Modelingmentioning

confidence: 99%

Investigation of the Pathology Causes of Xana, Greece by the Use of Nonlinear Finite Element Analyses

Terzi

2021

Lecture Notes in Civil Engineering

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The monument of Xana, a typical caravanserai, is located in the archeological site of the municipality of Traianoupolis, Evros, Greece and is one of the earliest khans in the Balkan area. Nowadays, the roof that once covered the monument and almost the entire first part that was used for travelers do not exist. The monument suffers by a vertical fracture on the northern wall, tensile cracks which run along the interior surface of the dome and vertical tensile cracks located at the openings of the western wall. Furthermore, hair cracks, loss of stone material, exfoliation and efflorescence worsen the pathology image of Xana.The target of the present study is the investigation of the monument's pathology by the use of nonlinear finite element analyses. A three-dimensional finite element model of the Xana's initial state is constructed. Soil-structure interaction effects are taken into account by the use of Winkler foundation. Various possible loading scenarios are investigated: (i) absence of wooden tendons; (ii) destruction of heavy roof; (iii) earthquake action; (iv) foundation settlement. The results of the nonlinear finite element analyses in terms of displacements and crack patterns can explain some of the main causes of the monument's pathology.

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Homogenization strategy for brick masonry walls under in-plane loading

Cited by 17 publications

References 29 publications

Application of Artificial Neural Network to Predict Load Bearing Capacity and Stiffness of Perforated Masonry Walls

Application of Artificial Neural Network to Predict Load Bearing Capacity and Stiffness of Perforated Masonry Walls

Enlarged brick blocks as an alternative to masonry

Investigation of the Pathology Causes of Xana, Greece by the Use of Nonlinear Finite Element Analyses

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