NDLI: Soil failure can be used for seismic protection of structures

Content Provider	Springer Nature Link
Author	Anastasopoulos, I. Gazetas, G. Loli, M. Apostolou, M. Gerolymos, N.
Copyright Year	2009
Abstract	A new seismic design philosophy is illuminated, taking advantage of soil “failure” to protect the superstructure. Instead of over-designing the foundation to ensure that the loading stemming from the structural inertia can be “safely” transmitted onto the soil (as with conventional capacity design), and then reinforce the superstructure to avoid collapse, why not do exactly the opposite by intentionally under-designing the foundation to act as a “safety valve” ? The need for this “reversal” stems from the uncertainty in predicting the actual earthquake motion, and the necessity of developing new more rational and economically efficient earthquake protection solutions. A simple but realistic bridge structure is used as an example to illustrate the effectiveness of the new approach. Two alternatives are compared : one complying with conventional capacity design, with over-designed foundation so that plastic “hinging” develops in the superstructure; the other following the new design philosophy, with under-designed foundation, “inviting” the plastic “hinge” into the soil. Static “pushover” analyses reveal that the ductility capacity of the new design concept is an order of magnitude larger than of the conventional design: the advantage of “utilising” progressive soil failure. The seismic performance of the two alternatives is investigated through nonlinear dynamic time history analyses, using an ensemble of 29 real accelerograms. It is shown that the performance of both alternatives is totally acceptable for moderate intensity earthquakes, not exceeding the design limits. For large intensity earthquakes, exceeding the design limits, the performance of the new design scheme is proven advantageous, not only avoiding collapse but hardly suffering any inelastic structural deformation. It may however experience increased residual settlement and rotation: a price to pay that must be properly assessed in design.
Starting Page	309
Ending Page	326
Page Count	18
File Format	PDF
ISSN	1570761X
Journal	Bulletin of Earthquake Engineering
Volume Number	8
Issue Number	2
e-ISSN	15731456
Language	English
Publisher	Springer Netherlands
Publisher Date	2009-08-04
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Capacity design Bearing capacity failure Uplifting Seismic performance Dynamic analysis Pushover Constitutive modelling Calibration through experimental data Structural Geology Hydrogeology Geophysics/Geodesy Civil Engineering Geotechnical Engineering
Content Type	Text
Resource Type	Article
Subject	Building and Construction Geophysics Geotechnical Engineering and Engineering Geology Civil and Structural Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Seismic safety of low ductility structures used in Spain

Seismic evaluation of an existing complex RC building

Seismic performance assessment of masonry structures with a modified “concrete” model

RC jacketing parameters to retrofit highway bridges

A numerical study on the seismic bearing capacity of shallow foundations

Consideration of modelling uncertainties in the seismic assessment of masonry buildings by equivalent-frame approach

An adaptive capacity spectrum method for assessment of bridges subjected to earthquake action

Comparison between non-linear dynamic and static seismic analysis of structures according to European and US provisions

Seismic response of a RC frame building designed according to old and modern practices

Soil failure can be used for seismic protection of structures

Similar Documents

Seismic safety of low ductility structures used in Spain

Seismic evaluation of an existing complex RC building

Seismic performance assessment of masonry structures with a modified “concrete” model

RC jacketing parameters to retrofit highway bridges

A numerical study on the seismic bearing capacity of shallow foundations

Consideration of modelling uncertainties in the seismic assessment of masonry buildings by equivalent-frame approach

An adaptive capacity spectrum method for assessment of bridges subjected to earthquake action

Comparison between non-linear dynamic and static seismic analysis of structures according to European and US provisions

Seismic response of a RC frame building designed according to old and modern practices

Soil failure can be used for seismic protection of structures