NDLI: On the seismic response of under-designed caisson foundations

Content Provider	Springer Nature Link
Author	Zafeirakos, Athanasios Gerolymos, Nikos
Copyright Year	2013
Abstract	The seismic behaviour of caisson foundations supporting typical bridge piers is analysed with 3D finite elements, with due consideration to soil and interface nonlinearities. Single-degree-of freedom oscillators of varying mass and height, simulating heavily and lightly loaded bridge piers, founded on similar caissons are studied. Four different combinations of the static ( $$\text{ FS }_\mathrm{V}$$ ) and seismic ( $$\text{ FS }_\mathrm{E}$$ ) factors of safety are examined: (1) a lightly loaded ( $$\text{ FS }_\mathrm{V}= 5$$ ) seismically under-designed ( $$\text{ FS }_\mathrm{E} < 1$$ ) caisson, (2) a lightly loaded seismically over-designed ( $$\text{ FS }_\mathrm{E} >1$$ ) caisson, (3) a heavily loaded ( $$\text{ FS }_\mathrm{V} = 2.5$$ ) seismically under-designed ( $$\text{ FS }_\mathrm{E} < 1$$ ) caisson and (4) a heavily loaded seismically over-designed caisson. The analysis is performed with use of seismic records appropriately modified so that the effective response periods (due to soil-structure-interaction effects) of the studied systems correspond to the same spectral acceleration, thus allowing their inelastic seismic performance to be compared on a fair basis. Key performance measures of the systems are then contrasted, such as: accelerations, displacements, rotations and settlements. It is shown that the performance of the lightly loaded seismically under-designed caisson is advantageous: not only does it reduce significantly the seismic load to the superstructure, but it also produces minimal residual displacements of the foundation. For heavily loaded foundations, however ( $$\text{ FS }_{V} = 2.5$$ ), the performance of the two systems (over and under designed) is similar.
Starting Page	1337
Ending Page	1372
Page Count	36
File Format	PDF
ISSN	1570761X
Journal	Bulletin of Earthquake Engineering
Volume Number	11
Issue Number	5
e-ISSN	15731456
Language	English
Publisher	Springer Netherlands
Publisher Date	2013-05-26
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Caisson foundations Nonlinear seismic soil-structure interaction Soil and interface nonlinearities Seismic performance Geotechnical Engineering & Applied Earth Sciences Environmental Engineering/Biotechnology Civil Engineering Geophysics/Geodesy Hydrogeology Structural Geology
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

Soil-structure interaction effects on an instrumented building

Equivalent-linear stiffness and damping in rocking of circular and strip foundations

Liquefaction-induced building movements

Guest editorial: old masonry under seismic loading

Influence of soil deformability on the seismic response of a masonry tower

Centrifuge modeling of seismic response of layered soft clay

Soil characterization for seismic damage scenarios purposes: application to Angra do Heroísmo (Azores)

Effects of nonlinear soil–structure interaction on the seismic response of structure-TMD systems subjected to near-field earthquakes

Experimental p-y loops for estimating seismic soil-pile interaction

On the seismic response of under-designed caisson foundations

Similar Documents

Soil-structure interaction effects on an instrumented building

Equivalent-linear stiffness and damping in rocking of circular and strip foundations

Liquefaction-induced building movements

Guest editorial: old masonry under seismic loading

Influence of soil deformability on the seismic response of a masonry tower

Centrifuge modeling of seismic response of layered soft clay

Soil characterization for seismic damage scenarios purposes: application to Angra do Heroísmo (Azores)

Effects of nonlinear soil–structure interaction on the seismic response of structure-TMD systems subjected to near-field earthquakes

Experimental p-y loops for estimating seismic soil-pile interaction

On the seismic response of under-designed caisson foundations