www.sefindia.org

STRUCTURAL ENGINEERING FORUM OF INDIA [SEFI]

 Forum SubscriptionsSubscriptions DigestDigest Preferences   FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups  RegisterRegister FAQSecurity Tips FAQDonate
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log in to websiteLog in to websiteLog in to websiteLog in to forum 
Warning: Make sure you scan the downloaded attachment with updated antivirus tools  before opening them. They may contain viruses.
Use online scanners
here and here to upload downloaded attachment to check for safety.

Old Bridge Collapse
Goto page 1, 2  Next
 
Post new topicReply to topic Thank Post    www.sefindia.org Forum Index -> Dams and Bridges
View previous topic :: View next topic  
Author Message
B.V.Harsoda
General Sponsor
General Sponsor


Joined: 19 Jan 2009
Posts: 2320
Location: RAJKOT,GUJARAT, INDIA

PostPosted: Mon May 23, 2016 3:52 am    Post subject: Old Bridge Collapse Reply with quote

Major accident was miraculously averted when a road bridge in Keshod Taluka of Junagadh district in GUjarat  broke down while a bus of the Gujarat State Road Transport Corporation popularly known as ST bus was crossing from it.
The bus miraculously did not fall off the bridge but kept half hanging. All the over a dozen passengers in the bus were safely evacuated and some of them with minor injuries were admitted to a local hospital.
Police said that the bus, which ply on Keshod-Vantwa route, was crossing the old road bridge over a dried up rainy stream near Sarod village in Keshod taluka when a part of the bridge suddenly collapsed. The bus had just crossed that portion so it did not fall and hanged over the intact part.
Around 15 passengers were evacuated with the help of local villagers. Some injured were later admitted to hospital.


Source Link:-
http://deshgujarat.com/2016/05/22/miraculous-escape-of-st-bus-as-bridge-collapses-in-junagadh/




Bridge.jpg
 Description:
 Filesize:  218.68 KB
 Viewed:  533 Time(s)

Bridge.jpg


Back to top
View user's profile Send private message
VPandya
General Sponsor
General Sponsor


Joined: 09 Nov 2009
Posts: 806

PostPosted: Mon May 23, 2016 4:56 pm    Post subject: We need to do lsomething like ASCE Report Card on Bridges. Reply with quote

Dear  Er. Harsodaji,  

We need to do something like ASCE  Report Card on USA Bridges.  See my post dated  3rd April 2016:  
" ASCE  Report Card on  Bridges in USA. " .  I attached the full ASCE report also.    

How many more bridges like this are there in Gujarat State and in India? Both Govts , Gujarat  and Central need to allocate Funds to do Strengthening of  Existing Old Bridges. This is a Public Safety Issue.


Regards.

Vasudeo Pandya P.E.
Structural Engineer
Back to top
View user's profile Send private message
VPandya
General Sponsor
General Sponsor


Joined: 09 Nov 2009
Posts: 806

PostPosted: Thu May 26, 2016 5:26 pm    Post subject: CNN ( World News) Video on condition of USA Bridges Reply with quote

Dear  Er.  Harsodaji,

This is from latest ASCE  Smart News Brief, 26th May 2016.  Indian Institute  Of Engineers and SEFI need to work with Indian News Media and produce a Video like  CNN  Video on  condition of  Existing Old Bridges in India.

CNN  News  Puts USA  Bridges Condition on Spot Light:

With approximately 60,000 bridges across the US in need of repair, CNN has kicked off the first of a four-part series about America's crumbling infrastructure. Part one focuses on those bridges, many of which are supported by 90-year-old beams and need repairs. Federal spending on infrastructure, however, has declined about 9% over the past decade.

See this Video on this Web-Link:

http://edition.cnn.com/2016/05/25/politics/infrastructure-roads-bridges-airports-railroads/

Like I said before THIS IS A  PUBLIC SAFETY  ISSUE.

Regards.
Vasudeo  Pandya   P.E.
Structural  Engineer

Back to top
View user's profile Send private message
VPandya
General Sponsor
General Sponsor


Joined: 09 Nov 2009
Posts: 806

PostPosted: Fri Jun 17, 2016 4:17 pm    Post subject: Condition of Infrastructure ( Bridges) in USA no better. Grade D+ Reply with quote

Dear Er. Harsodaji,
Condition of Infrastructure ( Bridges) in USA is no better. Grade from ASCE,
D + .   From Latest ASCE Smart Brief: June 17th, 2016: N.J. ASCE chapter gives state infrastructure a D+ New Jersey's roads and bridges  are getting close to failing : New Jersey's infrastructure received a D+Thursday from the New Jersey chapter of the American Society of Civil Engineers-- down from a C- in 2007. "If our elected officials do not make theinvestment in our infrastructure, then we risk it falling further intodisrepair," said ASCE's Luis Barragan. "Our state lawmakers have theopportunity to put us on a better path by fixing [the state's TransportationTrust Fund] before the end of June."

Web-Link:   TheWall Street Journal (tiered subscription model)
(6/15)

Regards.


Vasudeo  Pandya  P.E.
Structural  Engineer








.

Back to top
View user's profile Send private message
abhio
...
...


Joined: 08 Mar 2010
Posts: 529

PostPosted: Sat Jun 18, 2016 3:13 am    Post subject: Reply with quote

A lucky escape for the passengers indeed!

I am puzzled by the mode of failure. The deck slab appears to be absolutely intact, and it appears that two masonry piers have failed completely. To the best of my understanding, traction force and/ or out-of-plumb rotation of one or both piers has led to large bending moment in the piers, causing them to fail.

Is it possible to know the age of the bridge? It seems to be new or recently repaired.

I hope others with experience in forensic engineering could comment.
Back to top
View user's profile Send private message
VPandya
General Sponsor
General Sponsor


Joined: 09 Nov 2009
Posts: 806

PostPosted: Wed Jul 06, 2016 4:14 am    Post subject: New way of Condition assesment of Infrastructure damage Reply with quote

Dear Er.  Harsodji,  
New way of doing Condition assessment of Infrastructure damage:


From:  ASCE  SmartBrief  July 5th 2016  

Researchers develop drones that survey infrastructure:  Researchers at Carnegie Mellon  University and Northeastern University are developing the Aerial Robotic Infrastructure analyst to assess infrastructure damage. The system will use small drones to conduct 3D imaging of structures, identify problems and provide continued  assessments.


Web-Link:  news@Northeastern

Regards.

Vasudeo Pandya P.E.
Structural Engineer
Back to top
View user's profile Send private message
B.V.Harsoda
General Sponsor
General Sponsor


Joined: 19 Jan 2009
Posts: 2320
Location: RAJKOT,GUJARAT, INDIA

PostPosted: Wed Jul 06, 2016 5:09 am    Post subject: Re: New way of Condition assesment of Infrastructure damage Reply with quote

Dear Er. Pandya Sir,

Thank You very much.  This is very useful information of  advance Technology for Condition assessment of Infrastructure damage. There is strictly need to adopt  this system in India, as at present Central  & State  both Governments  are vigilant for safety issue.


Regards,
Er. B. V. Harsoda

VPandya wrote:
Dear Er.  Harsodji,  
New way of doing Condition assessment of Infrastructure damage:


From:  ASCE  SmartBrief  July 5th 2016  

Researchers develop drones that survey infrastructure:  Researchers at Carnegie Mellon  University and Northeastern University are developing the Aerial Robotic Infrastructure analyst to assess infrastructure damage. The system will use small drones to conduct 3D imaging of structures, identify problems and provide continued  assessments.


Web-Link:  news@Northeastern

Regards.

Vasudeo Pandya P.E.
Structural Engineer
Back to top
View user's profile Send private message
B.V.Harsoda
General Sponsor
General Sponsor


Joined: 19 Jan 2009
Posts: 2320
Location: RAJKOT,GUJARAT, INDIA

PostPosted: Wed Jul 06, 2016 5:55 am    Post subject: Reply with quote

Dear Er.,

In the Junaghdh & Porbandar District of Gujarat some of very old structures are of limestone masonry with or without plaster. As per my opinion, this case is of failure of  old lime stone masonry due to loss of strength of lime stone & masonry joints due to  all types of service loads including dead load and weather effect during passed service life.

Regards,
Er.  B. V. Harsoda

abhio wrote:
A lucky escape for the passengers indeed!

I am puzzled by the mode of failure. The deck slab appears to be absolutely intact, and it appears that two masonry piers have failed completely. To the best of my understanding, traction force and/ or out-of-plumb rotation of one or both piers has led to large bending moment in the piers, causing them to fail.

Is it possible to know the age of the bridge? It seems to be new or recently repaired.

I hope others with experience in forensic engineering could comment.
Back to top
View user's profile Send private message
N. Prabhakar
General Sponsor
General Sponsor


Joined: 25 Apr 2009
Posts: 474

PostPosted: Wed Jul 06, 2016 6:23 am    Post subject: Reply with quote

Dear Er. Harsoda,

It is amazing that the bus is overhanging from the bridge pier and still standing. It is lucky that over a dozen passengers in the bus were safely evacuated and some of them with minor injuries.

It my opinion, it is a flexural failure of the deck slab between the main piers.  It seems to have failed at 1/4 points of the span from end supports, and lot of debris is also seen on ground at these points.

As Er. Pandyaji writes both Govts , Gujarat  and Central need to allocate Funds to do Strengthening of  Existing Old Bridges. This is a Public Safety Issue.

With best wishes,

N. Prabhakar
Chartered Structural Engineer
Vasai (E), Pin 401 208
Back to top
View user's profile Send private message
B.V.Harsoda
General Sponsor
General Sponsor


Joined: 19 Jan 2009
Posts: 2320
Location: RAJKOT,GUJARAT, INDIA

PostPosted: Wed Jul 06, 2016 3:13 pm    Post subject: Reply with quote

Dear Er. N. Prabhakar Sir,
For Your More Sharp Observation I am uploading Video:-
\

Regards,
Er. B. V. Harsoda


N. Prabhakar wrote:
Dear Er. Harsoda,

It is amazing that the bus is overhanging from the bridge pier and still standing. It is lucky that over a dozen passengers in the bus were safely evacuated and some of them with minor injuries.

It my opinion, it is a flexural failure of the deck slab between the main piers.  It seems to have failed at 1/4 points of the span from end supports, and lot of debris is also seen on ground at these points.

As Er. Pandyaji writes both Govts , Gujarat  and Central need to allocate Funds to do Strengthening of  Existing Old Bridges. This is a Public Safety Issue.

With best wishes,

N. Prabhakar
Chartered Structural Engineer
Vasai (E), Pin 401 208
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topicReply to topic Thank Post    www.sefindia.org Forum Index -> Dams and Bridges All times are GMT
Goto page 1, 2  Next
Page 1 of 2

 

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum


© 2003, 2008 SEFINDIA, Indian Domain Registration
Publishing or acceptance of an advertisement is neither a guarantee nor endorsement of the advertiser's product or service. advertisement policy