ORCID Profile
0000-0002-3487-3016
Current Organisations
University of Tehran
,
Sharif University of Technology
,
Edith Cowan University
,
University of Melbourne
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Publisher: Elsevier BV
Date: 11-2016
Publisher: Springer International Publishing
Date: 17-07-2019
Publisher: Elsevier BV
Date: 03-2020
Publisher: Wiley
Date: 15-12-2017
DOI: 10.1002/HYP.11054
Publisher: ISEC Press
Date: 11-2020
DOI: 10.14455/ISEC.2020.7(2).STR-48
Abstract: This paper reviews the approach of eleven national codes on the analysis and design of masonry-infilled frames. It is shown that, in general, codes can be ided into two groups. The first group isolates the masonry and frame members by providing gaps to minimize the interaction between them. This method ensures that the complexities involved in analyzing the structure is avoided. However, the width of the gaps recommended is different for each of the codes. The second group takes advantage of the presence of high stiffness and strength masonry infill. In this technique, an equivalent-strut modeling strategy is mostly recommended. It is shown that the strut model suggested in each of the codes is different. An attempt to obtain a generic model for masonry-infilled frame failed largely due to the existence of many behavior-influencing parameters. Finally, it is suggested to have a paradigm shift in the modeling strategy where the masonry-infilled frames are classified into different categories and a model is suggested for each of them.
Publisher: Elsevier BV
Date: 09-2021
Publisher: Thomas Telford Ltd.
Date: 02-2021
Abstract: The wraparound reinforcement technique has been studied recently by researchers as a way of improving the bearing capacity and load−settlement characteristics of a sand bed supporting a strip footing with a constant land width for foundation, but with the use of varying width of geotextile reinforcement. This research study presents an experimental evaluation of geotextile-reinforced sand bed enhanced with a wraparound reinforcement technique having partially and fully wrapped ends with the use of constant width of the geotextile reinforcement, but with varying land width of the foundation. Laboratory model tests were conducted to investigate the influence of the lap length coverage of wraparound ends on the load−settlement behaviour of reinforced sand. Additionally, an instrumentation programme with pressure cells was designed to study the pressure distribution in foundation sand beneath the geotextile layer. The test results reveal that fully wrapped models possess the most improved behaviour, with about 50% improvement in the bearing capacity and 50% reduction in the land width occupied by the reinforcement compared with a reinforced model without wraparound ends.
Publisher: Elsevier BV
Date: 10-2018
Publisher: SAGE Publications
Date: 10-2013
DOI: 10.1260/1369-4332.16.10.1729
Abstract: This paper addresses the sensitivity of the in-plane and out-of-plane behaviour of reinforced-concrete (RC) frames with masonry infill panels to a select number of material related parameters. Instead of general conclusions, the intention is to facilitate a deeper insight into the behaviour of infill-frames at a micro level over a wide range of drift values. A script, which has recently been developed, is used to generate the finite element (FE) models of an infill-frame with desired geometric and mechanical properties. Also, the same three-dimensional FE model is used for both in-plane and out-of-plane analyses of infill-frames. The sensitivity analyses are conducted in three sequential parts: the analyses of a masonry bare wall under one-way bending, the analyses of an infill-frame under out-of-plane loading and the sensitivity analyses of an infill-frame under in-plane loading. A simple method is delineated to overcome convergence issues which are related to the highly nonlinear finite element models to be solved using the Newton-Raphson algorithm.
Publisher: Elsevier BV
Date: 10-2019
Publisher: Springer International Publishing
Date: 12-07-2019
Publisher: Informa UK Limited
Date: 30-11-2020
Publisher: Elsevier BV
Date: 09-2022
Publisher: Springer Science and Business Media LLC
Date: 07-2018
Publisher: Elsevier BV
Date: 06-2017
Publisher: Informa UK Limited
Date: 16-05-2018
Publisher: Informa UK Limited
Date: 19-05-0011
Publisher: Thomas Telford Ltd.
Date: 03-2019
Abstract: The available analytical equations in the literature for the bearing capacity of geosynthetic-reinforced foundation soils include the tensile force developed in reinforcement as a product of mobilised tensile strain and the tensile modulus of the reinforcement. These methods overlook the fact that the tensile modulus of a geotextile is a function of strain, and is usually given based on in-isolation testing of geotextile. This study focuses on strain distribution and the mobilisation of tensile modulus in geotextile reinforcement buried within the sandy soil by using the laboratory model strip footing tests. The strain distribution results reveal that the tensile strain in the geotextile is maximum in the centre of the footing and decreases along the width of the footing. The mobilised tensile modulus of geotextile is also calculated from the increased bearing capacity of the reinforced soil by using available equations in the literature. Results show that the tensile modulus of the geotextile is mobilised in the range of 3–7% of the nominal values that are used in theoretical solutions for the estimation of mobilised tensile force in geotextile reinforcement. This can be due to the in-isolation methods being used by standards to measure the tensile modulus of geosynthetics.
Publisher: Informa UK Limited
Date: 07-09-2015
Publisher: Informa UK Limited
Date: 02-01-2020
Publisher: Elsevier BV
Date: 06-2013
No related grants have been discovered for Alireza Mohyeddin.