Seismic Rehabilitation of Existing Reinforced Concrete Buildings with Seismic Isolation: A Case Study

2014 ◽  
Vol 30 (4) ◽  
pp. 1619-1642 ◽  
Author(s):  
Donatello Cardone ◽  
Giuseppe Gesualdi
Keyword(s):  
Seismic Isolation ◽  
Residential Building ◽  
Existing Buildings ◽  
Isolation System ◽  
Rehabilitation Process ◽  
Seismic Rehabilitation ◽  
High Rise ◽  
System Type ◽  
Displacement Based

The use of seismic isolation for the seismic rehabilitation of existing buildings is very attractive but often very tricky due to several aspects related to its implementation. In this paper, a case study of seismic rehabilitation of a high-rise residential building with seismic isolation is presented. The building under consideration is located in southern Italy and it is placed next to another building from which it is separated by a gap of 400 mm. In the paper, all the steps of the seismic rehabilitation process are described. First, the target objective of the seismic rehabilitation and the choice of isolation system type and location are discussed. The design of the isolation system, carried out following a direct displacement-based approach, is then examined. Finally, the main phases followed in the installation of the isolation system are described. Some comments on costs and time needed to complete the intervention are also reported.

ANALYSIS AND DESIGN OF G+4 RESIDENTIAL BUILDING USING ETABS

2021 ◽  
Vol 5 (12) ◽  
Author(s):  
Chinmay Padole ◽  
Samiksha Bansod ◽  
Taniya Sukhdeve ◽  
Abhishek Dhomne ◽  
Maheshwari Nagose ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Residential Building ◽  
Shape Modelling ◽  
Analysis And Design ◽  
Design Procedures ◽  
High Rise ◽  
Building Systems ◽  
Dynamic Loadings ◽  
Storey Building

ETABS stands for Extended Three-Dimensional Analysis of Building Systems. ETABS is commonly used to analyze: Skyscrapers, concrete structures, low and high rise buildings, and portal frame structures. The case study in this paper mainly emphasizes on structural behavior of multi-storey building for different plan configurations like rectangular, C, L and I-shape. Modelling of 15-storeys R.C.C. framed building is done on the ETABS software for analysis ETABS issue, for analysis and design for building systems. ETABS features are contain powerful graphical interface coupled with unmatched modeling, analytical, and design procedures, all integrated using a common database. STAAD and ETABS both of the software are well equipped and very much capable of handling different shape of the structures, static and dynamic loadings and different material properties.

Current State of Seismic-Isolation Design

2009 ◽  
Vol 4 (3) ◽  
pp. 175-181 ◽  
Author(s):  
Nagahide Kani ◽  
Keyword(s):  
Seismic Isolation ◽  
Structural Safety ◽  
Current Status ◽  
Property Value ◽  
Isolation System ◽  
High Rise ◽  
Current State ◽  
Safety Property ◽  
Seismically Isolated ◽  
Resistance Performance

Japan has the world’s highest number of seismic-isolation structures - a figure that has been gradually increasing since the 1995 South Hyogo earthquake that devastated Kobe and its environs. It is the main reason that two seismically isolated buildings in Kobe have shown good performance during and after earthquakes. As the awareness of the benefits of seismic isolation has grown, it is being accepted more among people, to maintain structural safety and functionality during and after earthquakes. Safety, property value, and functionality must be maintained by the earthquake-resistance performance of buildings. This seismic isolation system is the appropriate earthquake-resistant method in consideration of satisfying these three items, and positive in the design of structures, such as residences, hospitals, and high-rise buildings, then in retrofitting. This paper focuses on the current status of seismically isolated structures and problems in seismic isolation design.

ENHANCING THE DAYLIGHT AND ENERGY PERFORMANCE OF EXTERNAL SHADING DEVICES IN HIGH-RISE RESIDENTIAL BUILDINGS IN DENSE URBAN TROPICS

2021 ◽  
Vol 16 (3) ◽  
pp. 87-108
Author(s):  
Nadeeka Jayaweera ◽  
Upendra Rajapaksha ◽  
Inoka Manthilake
Keyword(s):  
Residential Buildings ◽  
Residential Building ◽  
Energy Performance ◽  
Simulation Software ◽  
Baseline Scenario ◽  
Building Model ◽  
High Rise ◽  
Lighting Energy ◽  
Shading Devices

ABSTRACT This study examines the daylight and energy performance of 27 external shading scenarios in a high-rise residential building in the urban tropics. The cooling energy, daytime lighting energy and the spatial daylight autonomy (sDA) of the building model were simulated in Rhino3D and Grasshopper simulation software. The best performance scenario (vertical and horizontal shading on the twentieth floor, horizontal shading only for the eleventh floor and no shading for the second floor) satisfied 75 sDA(300lx|50) with corresponding annual enery performance of 16%–20% in the cardinal directions. The baseline scenario, which is the current practice of providing balconies on all floors, reduced daylight to less than 75 sDA on the eleventh and second floor, even though it had higher annual enery performance (19%–24%) than the best performance scenario. Application of the design principles to a case study indicated that 58% of the spaces had over 75 sDA for both Baseline and Best performance scenarios, while an increase in enery performance of 1%–3% was found in the Best performance scenario compared to the Baseline.

scholarly journals Evaluating Collapse Fragility Curves for Existing Buildings Retrofitted Using Seismic Isolation

2020 ◽  
Vol 10 (8) ◽  
pp. 2844
Author(s):  
Amedeo Flora ◽  
Giuseppe Perrone ◽  
Donatello Cardone
Keyword(s):  
Seismic Isolation ◽  
Failure Modes ◽  
Base Isolation ◽  
Fragility Curves ◽  
Limit State ◽  
Spectral Acceleration ◽  
Existing Buildings ◽  
Isolation System ◽  
Isolation Technique ◽  
Design Earthquake

Few studies have investigated so far the collapse capacity of buildings with base-isolation. In such studies, preliminary considerations have been drawn based on a number of assumptions regarding: (i) the methodology used for assessing the collapse capacity, (ii) the collapse conditions and failure modes assumed for both superstructure and isolation system, and (iii) the numerical modeling assumptions. The main results pointed out that the collapse conditions of base-isolated buildings may occur for intensity levels slightly higher than those associated with the design earthquake. In this paper, further developments are made through the use of enhanced models for the description of the behavior of a rubber-based isolation system and the assumption of more rational collapse conditions. Collapse fragility functions, in terms of mean and dispersion values, are proposed for two archetypes representative of existing buildings retrofitted using the seismic isolation technique. The collapse margin ratio (median collapse capacity Sa,C, namely the spectral acceleration associated to a probability of exceedance equal to 50%, divided by the design spectral acceleration at the collapse prevention limit state) has been evaluated for each examined case-study. Values ranging from 1.10 to 1.45 were found.

scholarly journals The Correlations between Building Heights and Wind Speed in Determining the Dimension of Windows in a High-rise Residential Building Façade

2021 ◽  
Vol 903 (1) ◽  
pp. 012002
Author(s):  
S S Napitupulu ◽  
G Hardiman ◽  
RR Tobing
Keyword(s):  
Residential Building ◽  
Essential Factor ◽  
Case Study Method ◽  
High Rise ◽  
Surrounding Environment ◽  
Building Facades ◽  
Technological Developments ◽  
Wind Intensity ◽  
Main Factor

Abstract Climate change due to architecture occurs as a result of technological developments that support the development of materials, electrical mechanics, structures, and building shapes that play a role in increasing emission levels in the air. One type of building in Indonesia that contributes to increasing emissions is the residential building known as rumah susun. This research employs the case study method, observing the Rumah Susun Jatinegara Barat, located in East Jakarta. The case study shows that the use of prototypes that are not environmentally friendly makes a building’s performance worse. The use of precast, which resulted in monotonous window dimensions, is considered the main factor causing the failure of this Rumah Susun Jatinegara Barat to adapt to the surrounding environment. This problem occurred because the openings in the building façades had a monotonous dimension while the wind intensity that hit the building was increasing. The final result shows that the windows on the façades of the case study were not functioning except if all the openings in the residential unit are open. These results prove that the height of a building is an essential factor in planning high-rise flats, especially in Jakarta.

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