MIT-World Peace University (MIT-WPU) is a top educational institute located in Pune, India. It is recognized within&nbsp;UGC under Government of Maharashtra Act No. XXXV 2017.&nbsp;

It is part of the MIT group of institutions (established in 1983) which covers 10+ campuses across India and has more than 50,000+ students enrolled across various disciplines at a given point of time. The institute houses 15 schools ranging from Engineering &amp; Technology, Design, Pharmacy, Commerce, Governance among others. It offers undergraduate, postgraduate and PhD programs among different disciplines.&nbsp;

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MIT World Peace University

A considerable percentage (over 70%) of dwellings across the globe involve masonry elements. Masonry structures are well known to be weak in resisting seismic actions. This paper presents the effectiveness of (near surface mounted) containment reinforcement as earthquake resistant feature for masonry walls. Analytical prediction of the response of unreinforced (UR) and reinforced (R) masonry structures to earthquakes are hindered by the complexity and cost of micro and macro models. Consequently, researchers have come up with simplified models of masonry walls to capture seismic responses. The Equivalent Frame Model (EFM) is one such simplified approach. The present work evaluates the performance of two-storey UR and R masonry walls subjected to In-plane seismic action through Incremental Dynamic Analysis (IDA) and Fragility Analysis (FA). EFM has been employed in commercial FEM software SAP2000.v21 to evaluate the seismic response of these walls to the ensemble of near-field and far-field excitations. Finally, the work demonstrates the superiority of Containment Reinforced (CR) masonry against seismic action. © 2022

World University root node

School of Civil Engineering

Engineering and Technology

Materials Today: Proceedings

Fragility analysis of containment reinforced masonry wall using equivalent frame model

In the 1960 s, Fuller introduced Tensegrity structures having astonishing appearance. Owing to their light weight and deployability, this form was mainly employed in building deployable space structures, controllable structures, tensegrity robots and few civil engineering structures like towers, large dome structures, stadium roofs, temporary structures and tents. Principally owing to its inherently high flexibility, tensegrity structures have been scarcely employed in civil engineering construction. Current work attempts to design 220 kV Transmission Tower using tensegrity form. Geometry, loading and design details of this tower in traditional form are available in the literature. In the current work, tensegrity form has been employed to replace traditional tower structure. The geometric configurations for tensegrity towers are obtained by Force Density Method through MATLAB programming (by varying parameters like number of layers, height of layer, overlap between layers). The obtained configuration with prestresses is then modelled using commercially available software SAP2000 (ver. 23.3.1) and analysed for pertinent load combinations. To bring the top displacement of tensegrity tower in conformity with code stipulations, tie cables were employed to the tensegrity tower. From the present work, it is evident that usage of tensegrity form to construct transmission tower results in significant reduction of base area with marginal reduction in mass when compared to traditional towers and possibility of incorporating deployability. © 2022

Non-linear geometric analysis of multilayer tensegrity tower

Ferrocement-LGS (Light Gauge Steel) composite construction is recently proposed novel form of construction as a substitute to traditional RCC framed construction. In this construction form, walls of the building behave more or less like a shear wall in resisting in-plane lateral loads. The present paper attempts to propose a simplified mathematical model for obtaining response of composite wall under in plane lateral loading. As first part of present work, in-plane force deformation behavior of Ferrocement-LGS composite wall panel is predicted through FEM analysis (ANSYS). This force deformation curve was employed to estimate equivalent spring parameters of simplified mathematical model (ETABS) of composite walls. The simplified mathematical model saves significant computational efforts in predicting the in-plane response compared to the traditional FEM model without compromising the accuracy.

International Journal of Innovative Technology and Exploring Engineering

Simplified Mathematical Model to Predict Response of Ferrocement-Lgs Composite Wall to In-Plane Loading

Journal of Engineering Science

Time discretized FEM solution strategies for response evaluation of SDOF systems

Containment reinforcement is a novel earthquake resistant feature for masonry building. Present study explores fragility curves for containment reinforced multistoried building. A typical G+2 masonry building has been modelled in commercial finite element software ABAQUS SIMULIA version 6.14-1. Material model employed in present study has already been validated through experiments on masonry assemblages and masonry building model. In the present study, drift ratios corresponding to immediate occupancy, life safety and collapse prevention damage state have been obtained through pushover analysis of G+2 masonry building under consideration. Subsequently, the masonry building was analyze under ground motions with varying Peak Ground Accelerations (range 0.08g to 0.54g). Probability of exceedance of particular damage state versus PGA has been plotted as an outcome of this analysis. These fragility curves confirm effectiveness of containment reinforcement provided in very small percentage, in mitigating seismic risk.

FRAGILITY ANALYSIS OF MULTISTORIED CONTAINMENT REINFORCED MASONRY BUILDING

FERROCEMENT-LGS COMPOSITE CONSTRUCTION: A VIABLE ALTERNATIVE TO RCC

The main objective of this investigation is to study the axial and flexural behavior of Ferrocement-LGS composite section when subjected to half cyclic uniaxial compression and half cyclic 4 point bending. The connection between the ferrocement LGS composite was done by self-tapping gypsum screw. 3 different specimen of length 450mm and 900mm are connected with 150mm screw spacing and epoxy are tested under axial loading and 2 specimen of length 900mm with different screw spacing of 150mm are tested under flexural loading. The parameters studied here are load carrying capacity, maximum deflection/deformation, damping, stiffness degradation, load vs deflection curve, bending moment capacity, modulus of elasticity and failure pattern. Comparison of results with different specimen are done. This research will further provide guidance for study on ferroocement LGS composite system for construction

International Journal of Scientific & Technology Research

Cyclic Behavior Of LGS Ferrocement Composite Under Compression And Flexure

The main objective of this investigation is to study the flexural behavior of Ferrocement-LGS composite section when subjected to 4 point monotonic load. Ferrocement panel and LGS is connected with self-tapping screw at different spacing. 3 different spacing of 125mm, 150mm and 250mm screw connection is analyzed under flexural loading to understand the deflection behavior and moment capacity of section. Experimental study & research determine the result in terms of loadcarrying capacity, central deflection, bending moment capacity, Load vs Deflection curve and failure pattern. These results will be compared with each other. Expectation from this research is that this research will be used as guidance for future research on composite system for building construction.