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Aseismic Design and Construction in Egnatia Odos

Aseismic Design and Construction in Egnatia Odos

Written by nisida on . Posted in Νέα.

A special issue of the Hellenic Association for Earthquake Engineering related to the Seismic Design of major projects along the Egnatia Highway is now made available online

Title: Aseismic Design and Construction along the Egnatia Odos
Editor: A.J. Kappos
Size: 51MB
Type: PDF

Official Website of the Hellenic Association for Earthquake Engineering: www.eltam.gr

IBSBI Conference: Innovations On Bridges And Soil-Bridge Interaction, Athens, 2014

IBSBI Conference: Innovations On Bridges And Soil-Bridge Interaction, Athens, 2014

Written by nisida on . Posted in Νέα.

The Hellenic Society of Bridges Study is pleased to announce the second IBSBI Conference, “Innovations On Bridges And Soil-Bridge Interaction” IBSBI 2014, which will be held in Athens on 16, 17 and 18 October 2014. During 2014 we will be celebrating the 3300 years of the construction of the oldest bridge in Europe, the Mycenaean Bridge of Kazarma.

CONFERENCE TOPICS
· Aesthetics and architecture of bridges
· Bridge monitoring
· Design methods
· Fabrication and construction
· High performance materials
· New materials and their application on bridges
· International codes on bridges and comparison-loadings
· Seismic behaviour
· Vehicle-bridge interaction
· Old bridges and maintenance
· Stone bridges
· Long-span bridges
· Special forms of bridges
· Floating bridges
· Pedestrian bridges
· Sky-bridges
· Geotechnical problems
· Soil-structure interaction
· Stability problems – types and analysis
· Auxiliary and connected sub-structures
· Prefabrication
· Erection
· Computational techniques
· Experimental research
· Isolation and damping systems
· Aeroelasticity

Impact and explosion problems
· Multi-hazard loading on bridges

CALL FOR ABSTRACTS

The Scientific Committee invites all participants wishing to contribute to the scientific program to submit an abstract for oral presentation. Abstracts must be submitted by the deadline, January 10, 2014, to the following e-mail address:ibsbi2014@ntua.gr . Abstracts received after this date will not be considered.

Selected papers of high quality will be considered for publication in an extended form in the new International Journal IJBE after invitation ( http://www.ijbe.net/ ).

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Bridge Wizard: a freeware for Seismic Analysis of Bridges using OpenSees

Bridge Wizard: a freeware for Seismic Analysis of Bridges using OpenSees

Written by nisida on . Posted in Νέα.

Bridge Wizard, is an interactive front-end software for the seismic analysis and assessment of bridge structures, that takes advantage of a sophisticated, Open-Source software for Earthquake Engineering Simulation (OpenSees) to provide: (a) conceptual assistance during the finite element analysis pre- and post-processing (b) finite element model development automations and (c) expert advice for modeling various bridge-specific issues that are key for the reliable prediction of structural response (such as boundary conditions, pier-deck connections, soil-structure interaction etc). Bridge Wizard improves the efficiency and credibility of the finite element modeling developed, particularly for the case of complex bridge structures and gives the designer more control in critical modeling decisions affecting the overall system response.

Software website: www.bridge-wizard.eu

Seventh National Seismic Conference on Bridges and Highways (7nsc)

Seventh National Seismic Conference on Bridges and Highways (7nsc)

Written by nisida on . Posted in Νέα.

“Bridge Resilience for Earthquakes and Other Natural Hazards”. Oakland May 20-22, 2013. 
The Seventh National Seismic Conference on Bridges & Highways is tailored to the needs of engineers working for state and local departments of transportation, design consultants, contractors, researchers, mangers, and others responsible for transportation facilities. International guests will be able to dialogue with others, share their successes and needs, and learn the latest approaches to design, retrofitting, geotechnology, inspection etc.

Mini-Symposium on Computer-Aided Seismic Design and Assessment of Bridges

Mini-Symposium on Computer-Aided Seismic Design and Assessment of Bridges

Written by nisida on . Posted in Νέα.

The 2013 International Conference on Earthquakes and Structures (ICEAS13) (http://asem.cti3.com/ICEAS.htm) will be held as part of The 2013 World Congress on Advances in Structural Engineering and Mechanics (ASEM13) (http://asem.cti3.com/asem13.htm) on 8-12 September 2013 in the International Convention Center Jeju, Jeju, Korea.
As part of ICEAS13, a Mini-Symposium on “Computer-Aided Seismic Design and Assessment of Bridges” is being organized by Anastasios Sextos (Assistant Professor at Aristotle University of Thessaloniki). 
The Mini-Symposium focuses on new computational methods for the seismic design and assessment of bridge structures primarily, but not exclusively, dealing with selection and scaling of ground motion, abutment-embankment and soil-foundation-superstructure interaction, seismic isolation, inelastic structural response, seismic pounding, structural health monitoring and control.
Authors interested in this Mini-Symposium are requested to submit a 300 words abstract by 31 March 2013. through the link http://www.techno-press.org/conference 
The procedure is to select “Abstract Submission – ASEM13” and, subsequently, the “Computer-Aided Seismic Design and Assessment of Bridges” Mini Symposium. Deadline for submitting the full conference paper after the acceptance of the abstract is 31 May 2013.
It would be preferable to notify the organizer of the Mini-Symposium at (asextos@civil.auth.gr) along with the submission of abstract. 
Thank you in advance for your kind attention and we are looking forward for an interesting session. 
Symposium on “Seismic assessment and retrofit of bridges”

Symposium on “Seismic assessment and retrofit of bridges”

Written by nisida on . Posted in Νέα.

Symposium on “Seismic assessment and retrofit of bridges” is being organized by Prof. Andreas Kappos, within the framework of the COMPDYN 2013 conference http://www.compdyn2013.org/ that is organized under the auspices of the European Community on Computational Methods in Applied Sciences (ECCOMAS) and the International Association for Computational Mechanics (IACM). This is the fourth conference in the COMDYN series and will take place from 12 to 14 June 2013 at the Kos International Convention Centre (KICC) in the beautiful island of Kos.

An abstract of no more than an A4 page can be submitted by 29 October 2012, following the instructions given at the Conference website (see address above) and making sure that you indicate that the abstract is submitted for MS14 (Mini-Symposium 14)

The Symposium will focus on the seismic assessment and retrofit of bridges, with emphasis on analytical/computational methods that fit well the scope of COMPDYN, but relevant experimental studies will also be welcome; presentations will include, among others, recent work carried out on this topic by members of two international groups dealing with this issue, the EAEE Task Group 11 ‘Seismic design, assessment, and retrofit of Bridges’(http://eaee-tg11.weebly.com), and the IABSE Working Group 7 ‘Earthquake Resistant Structures’ (http://ftpiabapp1.fishtech.net/imis15/IABSE/IABSE_Association/Committees/Technical_Groups/Working_Groups/WG7/IABSE/association/Committee_files/Technical/WG/WG7.aspx?hkey=b469e271-7732-480c-94dd-22e2d3f6f7f3).

It is aimed that the Symposium will constitute a forum for the exchange of research results and ideas on currently available procedures and their applicability to the seismic assessment and retrofit of bridges. As such, pertinent issues such as modelling of bridge members strengthened using different techniques, modelling of interfaces, calibration of models against tests results, etc, will be amongst the topics open to debate and scrutiny. Hence the Symposium will provide a valuable contribution to the further development and implementation of methodologies for the seismic assessment and retrofit of bridges and contribute to risk reduction in these critical structures.

New Oakland Bay Bridge

New Oakland Bay Bridge

Written by nisida on . Posted in Νέα.

 

SAN FRANCISCO — Venture deep inside the new skyway of the San
Francisco-Oakland Bay Bridge, and it becomes clear that the bridge’s
engineers have planned for the long term.

At intervals inside the elevated roadway’s box girders — which have the
closed-in feel of a submarine, if a submarine were made of concrete —
are anchor blocks, called deadmen, cast into the structure. They are
meant to be used decades from now, perhaps in the next century, when in
their old age the concrete girders will start to sag. By running cables
from deadman to deadman and tightening them, workers will be able to
restore the girders to their original alignment.
The deadmen are one sign that the new eastern span
of the Bay Bridge, which includes the skyway and a unique suspension
bridge, is meant to last at least 150 years after its expected opening
in 2013. (The existing eastern bridge, which is still in use, will then
be torn down.)
But to make it to the 22nd century, the new span may at some point have
to survive a major earthquake, like the one that destroyed much of San
Francisco in 1906 or the one that partly severed the Bay Bridge in 1989.
With two faults nearby that are capable of producing such large quakes,
survival is no simple matter.
Say what you want about the project — and as the construction timeline
has lengthened past a decade and costs have soared over $6 billion,
plenty has been said — keeping the bridge intact in an earthquake has
always been the engineers’ chief goal.
And to meet that goal, they are going with the flow: designing flexible
structures in which any potential damage would be limited to specific
elements.
“We wanted to make this bridge flexible so that when the earthquake
comes in, the flexibility of the system is such that it basically rides
the earthquake,” said its lead designer, Marwan Nader, a vice president
at the engineering firm T. Y. Lin International.
That contrasts with another potential approach: making the bridge
structures large enough, and rigid enough, to resist movement. “Massive
and stiff structures would look absolutely ugly and be very, very
expensive,” said Frieder Seible, dean of the Jacobs School of
Engineering at the University of California, San Diego, who tested many
elements of the bridge design.
That design includes a 525-foot-tall suspension bridge tower made up of
four steel shafts that should sway in a major earthquake, up to about
five feet at the top. But the brunt of the force would be absorbed by
connecting plates between the shafts, called shear links.
The bridge’s concrete piers are designed to sway as well, limiting
damage to areas with extra steel reinforcing. And at joints along the
entire span there are 60-foot sliding steel tubes, called hinge pipe
beams, with sacrificial sections of weaker steel that should help spare
the rest of the structure as it moves in a quake.
“At the seismic displacement that we anticipate, there will be damage,”
Mr. Nader said. “But the damage is repairable and the bridge can be
serviceable with no problems.”
Emergency vehicles and personnel, at the least, should be able to use
the bridge within hours of a major earthquake, after crews inspect the
structure and make temporary fixes, like placing steel plates over
certain joints. Given that the Bay Area’s two major airports would be
expected to be out of service after such a disaster, this bridge and the
Benicia-Martinez Bridge, another seismically secure span about 20 miles
to the northeast, would be “lifeline” structures to bring assistance to
the stricken region from an Air Force base inland, said Bart Ney, a
spokesman for the California Department of Transportation.
It was an earthquake that made this replacement span, which runs for 2.2
miles between Oakland and Yerba Buena Island in the middle of San
Francisco Bay, necessary. The Loma Prieta quake of 1989, the first to
occur along the San Andreas fault zone since the 1906 disaster, caused
part of the existing steel-truss span to collapse,
killing a motorist. The bridge was closed for a month. That quake, with
a magnitude of 6.9, caused strong shaking that lasted about 15 seconds
and movement far greater than the 1930s-vintage bridge had been designed
to handle.
Πηγή: New York Times
Seismic Design and Assessment of Bridges

Seismic Design and Assessment of Bridges

Written by nisida on . Posted in Νέα.

Kυκλοφόρησε από τον οίκο Springer το βιβλίο “Seismic Design and Assessment of Bridges”, των Kappos, Saiidi, Aydinoglu, και Isakovic (ως τόμος 21 της σειράς Geotechnical, Geological and Earthquake Engineering) σε έντυπη και ηλεκτρονική μορφή.Μέσω της ιστοσελίδας του βιβλίου
http://www.springer.com/engineering/civil+engineering/book/978-94-007-3942-0?changeHeader
είναι δυνατή η δωρεάν πρόσβαση σε όλα τα κεφάλαια του βιβλίου (απαιτείται πανεπιστημιακή σύνδεση).

Workshop on "Bridge Design to Eurocodes" with worked examples, Vienna, 4-6 October 2010

Workshop on “Bridge Design to Eurocodes” with worked examples, Vienna, 4-6 October 2010

Written by nisida on . Posted in Νέα.


Workshop on “Bridge Design to Eurocodes” with worked examples will take place in Vienna on 4-6 October 2010. This workshop will have emphasis on worked examples and intends to contribute towards the transfer of background knowledge and expertise of Eurocode Bridge Parts writers (CEN/TC250 Horizontal Group Bridges) to potential trainers at national level and Eurocode users. Please find attached the first announcement of the workshop. It is also accessible on: http://eurocodes.jrc.ec.europa.eu/showpage.php?id=334_1  where you will also find additional information on the workshop.

For further questions you can send an e-mail at eurocodes-bridges2010@jrc.ec.europa.eu .

Deadline for registration has been extended to Friday 17th September 2010.