Next Article in Journal
Modeling of Building Energy Consumption by Integrating Regression Analysis and Artificial Neural Network with Data Classification
Next Article in Special Issue
Hysteretic Energy Demands in Multi-Degree-of-Freedom Systems Subjected to Earthquakes
Previous Article in Journal
Multiscale Numerical Analysis of TRM-Reinforced Masonry under Diagonal Compression Tests
Previous Article in Special Issue
Numerical Modelling and Validation of the Response of Masonry Infilled RC Frames Using Experimental Testing Results
Open AccessArticle

On the Distribution in Height of Base Shear Forces in Linear Static Analysis of Base-Isolated Structures

1
Department of Civil Engineering, University of Salerno, 84084 Fisciano, Italy
2
Department of Structural Engineering, University of California, San Diego, CA 92093-0085, USA
*
Author to whom correspondence should be addressed.
Buildings 2020, 10(11), 197; https://doi.org/10.3390/buildings10110197
Received: 28 September 2020 / Revised: 27 October 2020 / Accepted: 29 October 2020 / Published: 1 November 2020
(This article belongs to the Special Issue Structural Analysis for Earthquake-Resistant Design of Buildings)
Although base isolation is nowadays a well-established seismic-protection technique for both buildings and bridges, and several issues are still open and attract the interest of the research community. Among them, the formulation of computationally efficient and accurate analysis methods is a relevant aspect in structural design of seismic-isolated buildings. In fact, codes and guidelines currently in force in various parts of the world generally include the possibility for designers to utilize linear-elastic analysis methods based on equivalent linearization of the non-linear force-displacement response of isolators. This paper proposes a formula for defining the force distribution in height that should be considered in linear-static analyses to obtain a more accurate approximation of the actual structural response, supposedly simulated by means of non-linear time history analysis. To do that, it summarizes the results of a wide parametric analysis carried out on a batch of structures characterized by three different heights and various properties of base isolators. The reported results highlight that the equivalent static force distribution provided by both Italian and European codes tend to underestimate the actual seismic lateral forces acting on base-isolated buildings, whereas the inverted triangular distribution, proposed in various American codes and standards, is often conservative. View Full-Text
Keywords: seismic isolation; linear static analysis; vertical distribution of shear forces seismic isolation; linear static analysis; vertical distribution of shear forces
Show Figures

Figure 1

MDPI and ACS Style

Zinco, A.; Fraternali, F.; Benzoni, G.; Martinelli, E. On the Distribution in Height of Base Shear Forces in Linear Static Analysis of Base-Isolated Structures. Buildings 2020, 10, 197. https://doi.org/10.3390/buildings10110197

AMA Style

Zinco A, Fraternali F, Benzoni G, Martinelli E. On the Distribution in Height of Base Shear Forces in Linear Static Analysis of Base-Isolated Structures. Buildings. 2020; 10(11):197. https://doi.org/10.3390/buildings10110197

Chicago/Turabian Style

Zinco, Adamo; Fraternali, Fernando; Benzoni, Gianmario; Martinelli, Enzo. 2020. "On the Distribution in Height of Base Shear Forces in Linear Static Analysis of Base-Isolated Structures" Buildings 10, no. 11: 197. https://doi.org/10.3390/buildings10110197

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop