Seismic Performance Evaluation of Residential Cum Commercial Infilled Building | Chapter 10 | Technological Innovation in Engineering Research Vol. 6

 

A nonlinear static pushover analysis is required since a linear analysis is insufficient to determine the seismic demand of a structure under the conditions of a strong earthquake. Identification of crucial individuals who are likely to reach their critical state during an earthquake is aided by a pushover study. As a result, sufficient care must be taken throughout the structure's design and construction. The infill wall makes the RC frame more rigid and converts its moment-resisting frame action into a truss action, which has an impact on the structure's seismic reaction. The G+7 Story Commercial/Residential Reinforced Concrete Building is taken into consideration for push over analysis in the current study. The structure has a basement, a tower room for a staircase, and an elevator machine room on the roof. On the ground, first, and second stories are stores. On the third and fourth stories are auditoriums, while the other levels are made up of residential apartments. Because an auditorium room needs a column-free area for functional purposes, floating columns are provided. Push over analysis is used to examine four different kinds of construction model types. Models 2, 3, and 4 are constructed using red clay brick infill walls, hollow concrete block infill walls, and AAC block infill walls, respectively, whereas Type 1 (the standard model) has no infill walls. For the modeling of infill walls, an equivalent strut technique is utilized. ETABS v18 software is used to carry out the nonlinear static analysis for the seismic evaluation assessment. The narrative displacement, story drift, base shear, performance point, and plastic hinge state of several models are compared. The findings show that the addition of infill walls greatly increases the structure's stiffness and, as a result, significantly lessens story displacement and story drift. Due of its reduced weight, the AAC block infill exhibits greater performance. The development of plastic hinges in the models reveals a few structural flaws that need to be fixed for increased strength.

Author(s) Details:

M. S. Hora,
Maulana Azad National Institute of Technology (MANIT), Bhopal, India.

H. L. Tiwari,
Maulana Azad National Institute of Technology (MANIT), Bhopal, India.

Yoshika Bhagat,
Department of Civil Engineering, Maulana Azad National Institute of Technology (MANIT), Bhopal, India.

Please see the link here: https://stm.bookpi.org/TIER-V6/article/view/7607

Study on Seismic Capacity Assessment of Existing RC Building by Using Pushover Analysis | Chapter 6 | Recent Developments in Engineering Research Vol. 7

 For the most part, the infrastructure existing in Sudan is not structured or planned to withstand seismic forces. The study investigated the seismic damage in Khartoum , Sudan, to an existing 5-storey reinforced concrete structure. In the report , three performance standards were considered, which included immediate occupancy, life protection, and prevention of collapse. Using the force control approach and lateral push with displacement control, the gravity push was performed using SAP2000. The push curve, consisting of capacity spectrum, demand spectrum, and performance point, is generated by Pushover analysis. In addition to maximum base shear carrying power, it showed the performance level of building components. The demand curve has been observed to intersect the capability curve between points B and C in the X direction, which is the level of life protection, and between points B and C in the Y direction, which is the level of life safety and collapse prevention. Therefore, to be reinforced, some building elements are required. Due to its simplicity, the study concluded that pushover analysis is preferably used for static nonlinear procedures. The position of plastic hinges has been shown to suggest weak zones in a structure, which is helpful in re-strengthening existing buildings. It has been studied that by modifying member properties and re-running the study, the building can easily be stiffened or strengthened.

Author(s) Details

Dr. Mohammed Ismaeil
Department of Civil Engineering, College of Engineering, University of Prince Mugrin, Saudi Arabia and Sudan University for Science and Technology, Khartoum, 79371, Sudan

View Book :- https://bp.bookpi.org/index.php/bpi/catalog/book/299

Study on Seismic Capacity Assessment of Existing RC Building by Using Pushover Analysis| Chapter 6 | Recent Developments in Engineering Research Vol. 7

 

For the most part, the infrastructure existing in Sudan is not structured or planned to withstand seismic forces. The study investigated the seismic damage in Khartoum , Sudan, to an existing 5-storey reinforced concrete structure. In the report , three performance standards were considered, which included immediate occupancy, life protection, and prevention of collapse. Using the force control approach and lateral push with displacement control, the gravity push was performed using SAP2000. The push curve, consisting of capacity spectrum, demand spectrum, and performance point, is generated by Pushover analysis. In addition to maximum base shear carrying power, it showed the performance level of building components. The demand curve was found to overlap the capability curve between points B and C in the X direction, which is the degree of life protection, and between points B and C in the Y direction. That is the degree of life security and collapse prevention. Therefore, to be reinforced, some building elements are required. Due to its simplicity, the study concluded that pushover analysis is preferably used for static nonlinear procedures. The position of plastic hinges has been shown to suggest weak zones in a structure, which is helpful in re-strengthening existing buildings. It has been studied that by modifying member properties and re-running the study, the building can easily be stiffened or strengthened.

Author(s) Details

Dr. Mohammed Ismaeil
Department of Civil Engineering, College of Engineering, University of Prince Mugrin, Saudi Arabia and Sudan University for Science and Technology, Khartoum, 79371, Sudan.

View Book :- https://bp.bookpi.org/index.php/bpi/catalog/book/299