Discussion on “Seismic capacity of masonry infilled RC frame strengthening with expanded metal ferrocement” by A. Leeanansaksiri, P. Panyakapo, A. Ruangrassamee [Eng. Struct. 159 (2018) 110–127]

2018 ◽  
Vol 171 ◽  
pp. 928-932 ◽  
Author(s):  
Sabahattin Aykac ◽  
Eray Ozbek ◽  
Ilker Kalkan ◽  
Bengi Aykac
Keyword(s):  
Rc Frame ◽  
Seismic Capacity ◽  
Expanded Metal

Seismic capacity of masonry infilled RC frame strengthening with expanded metal ferrocement

2018 ◽  
Vol 159 ◽  
pp. 110-127 ◽  
Author(s):  
Anuchat Leeanansaksiri ◽  
Phaiboon Panyakapo ◽  
Anat Ruangrassamee
Keyword(s):  
Rc Frame ◽  
Seismic Capacity ◽  
Expanded Metal

scholarly journals Seismic Strengthening of RC Frame and Brick Infill Panel using Ferrocement and Expanded Metal

2020 ◽  
Vol 24 (3) ◽  
pp. 45-59
Author(s):  
Suvawat Longthong ◽  
Phaiboon Panyakapo ◽  
Anat Ruangrassamee
Keyword(s):  
Rc Frame ◽  
Seismic Strengthening ◽  
Expanded Metal

Research on Probability and Statistics of Vulnerabilities in Recent Chinese Earthquake

2012 ◽  
Vol 204-208 ◽  
pp. 2667-2670
Author(s):  
Yuan Ji ◽  
Chuan Feng Han
Keyword(s):  
Efficient Method ◽  
Rc Frame ◽  
Northridge Earthquake ◽  
Seismic Capacity ◽  
The Past ◽  
Evaluation Of Performance ◽  
Rc Structure ◽  
Vulnerability Of Buildings ◽  
Probability And Statistics ◽  
Structural Code

Analysis of Probability has been applied to evaluate the vulnerability of buildings and other facilities under the effect of earthquakes in USA and other countries. During the past ten years, this method becomes an efficient method to evaluate the seismic capacity of structure in many serious earthquakes, such as Northridge Earthquake of 1994 and so on. However, probability and Statistics of Vulnerability has not been attached enough importance it deserves in the evaluation of performance of seismic capacity of structure. The vulnerability of reinforcement concrete (RC) frame with regard to recent Chinese earthquake is analyzed by using probability and statistics method. The important risk issue of seismic capacity of formal RC structure is examined, which can serve as a basis for improvements in structural code development.

scholarly journals SEISMIC CAPACITY OF RC FRAME BUILDINGS WITH MASONRY INFILL DAMAGED BY PAST EARTHQUAKES

2020 ◽  
Vol 53 (1) ◽  
pp. 13-21
Author(s):  
Hamood Alwashali ◽  
Md. Shafiul Islam ◽  
Debasish Sen ◽  
Jonathan Monical ◽  
Masaki Maeda
Keyword(s):  
Rc Frame ◽  
Seismic Evaluation ◽  
Seismic Capacity ◽  
Simple Method ◽  
Evaluation Standard ◽  
Masonry Infill ◽  
Frame Buildings ◽  
Recent Earthquakes ◽  
Observed Damage ◽  
Rc Frame Buildings

Many of the buildings which experienced damage in recent earthquakes such as the 2015 Nepal Earthquake were reinforced concrete (RC) frame buildings with unreinforced masonry infill walls. This study proposes a simplified procedure to estimate the in-plane seismic capacity of masonry infilled RC frame buildings based on concepts of the Japanese seismic evaluation standard (JBDPA, [1]). The correlation of seismic capacity and observed damage obtained using a database of 370 existing RC frame buildings with masonry infill that experienced earthquakes in Taiwan, Ecuador and Nepal is investigated. The Is index, which represents the seismic capacity of buildings in the Japanese standard, showed good correlation with the observed damage and proved to be effective as a simple method to estimate seismic capacity. The method was then applied to 103 existing buildings in Bangladesh that have not experienced a major earthquake recently. The results emphasize the necessity for urgent seismic evaluation and retrofitting of buildings in Bangladesh.

scholarly journals The Role of Infill Walls in the Dynamic Behavior and Seismic Upgrade of a Reinforced Concrete Framed Building

2020 ◽  
Vol 6 ◽  
Author(s):  
Alessandra De Angelis ◽  
Maria Rosaria Pecce
Keyword(s):  
Reinforced Concrete ◽  
Dynamic Behavior ◽  
Seismic Performance ◽  
Limit State ◽  
Ambient Vibration ◽  
Seismic Zone ◽  
Rc Frame ◽  
Seismic Capacity ◽  
Infill Walls

Masonry infill walls are commonly used in the frames of reinforced concrete (RC) buildings around the world. The seismic performance of these buildings is strongly affected by the presence of the infill walls and partitions, as shown by the post-earthquake damage in many cases. The effect of these components is particularly important for RC frame constructions underdesigned for seismic actions that usually are characterized by deformable frames magnifying the contribution of the infill walls to the seismic response. Also the flexibility of the floors could be influenced by the collaboration of the infill walls to the transversal stiffness of the building. The paper addresses the seismic assessment of a typical infilled RC frame building designed only for gravity loads in the 1960s in the Southern of Italy that currently is a high-seismic zone. The structural identification of the building based on ambient vibration test has been already done pointing out the significant role of infill walls and partitions through the updating of the numerical model. Based on the results of the calibrated model, the effect of the floor flexibility on the dynamic behavior of the structure is discussed, and the seismic capacity at life safety limit state (LSLS) is assessed by means of the linear dynamic analyses. The effects of the infill walls on the seismic performance of the building are discussed in detail considering a strengthening solution that involves the infill panels as masonry walls cut from the RC columns to avoid the local interaction but strengthened by composite grids in mortar matrix (FRCM).

Effect of Fire Hazard on Seismic Capacity of RC Frame Building

2021 ◽  
pp. 223-233
Author(s):  
Praveen Oggu ◽  
Swati Raman ◽  
K. Gopikrishna
Keyword(s):  
Fire Hazard ◽  
Rc Frame ◽  
Seismic Capacity ◽  
Frame Building ◽  
Rc Frame Building

scholarly journals Seismic Performance of a New Structural Design Solution for First-Story Isolated RC Buildings with Coupled Beam-Column Connections

2019 ◽  
Vol 9 (1) ◽  
pp. 177 ◽  
Author(s):  
Yingxiong Wu ◽  
Ning Liu ◽  
Ai Qi
Keyword(s):  
Structural Design ◽  
Seismic Analysis ◽  
Shaking Table ◽  
Frame Structure ◽  
Design Solution ◽  
Rc Frame ◽  
Seismic Capacity ◽  
Ground Acceleration ◽  
Isolation System ◽  
Frame Buildings

This study proposes a new structural design of the first-story isolation system in reinforced concrete (RC) structures. Compared to the conditional buildings with independent columns, this new design integrates the independent columns with beams to increase the seismic capacity of the building by increasing the integrated stiffness of the coupled columns and the stability of the isolation system. The seismic responses of the proposed structure and the corresponding isolation effect were investigated by performing a series of numerical simulation and shaking table tests on a typical 7-story RC frame structure. The structure models were subjected to four earthquake waves with two PGAs (peak ground acceleration) of 0.30 g and 0.40 g for seismic analysis regarding the peak acceleration and inter-story displacement. Both simulation and testing results showed that the story acceleration and inter-story displacement of the superstructure in the isolated model decreased significantly. While the substructure below the isolation layer had a negligible decrease of acceleration. The connection of beams with concrete columns significantly increases the seismic capacity of the RC frame buildings compared to non-isolated frame buildings. The coupled beam-column connections could thus be potentially adopted in the practical first-story isolation system to avoid the requirements of large column stiffness and large column size.

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