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Collapse of New Bridge Underscores Worries About China Infrastructure

ao333

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One of the longest bridges in northern China collapsed on Friday, just nine months after it opened, setting off a storm of criticism from Chinese Internet users and underscoring questions about the quality of construction in the country’s rapid expansion of its infrastructure.

A nearly 330-foot-long section of a ramp of the eight-lane Yangmingtan Bridge in the city of Harbin dropped 100 feet to the ground. Four trucks plummeted with it, resulting in three deaths and five injuries.

The 9.6-mile bridge is one of three built over the Songhua River in that area in the past four years. China’s economic stimulus program in 2009 and 2010 helped the country avoid most of the effects of the global economic downturn, but involved incurring heavy debt to pay for the rapid construction of new bridges, highways and high-speed rail lines all over the country.

Questions about the materials used during the construction and whether the projects were properly engineered have been the subject of national debate ever since a high-speed train plowed into the back of a stopped train on the same track on July 23 last year in the eastern city of Wenzhou. The crash killed 40 people and injured 191; a subsequent investigation blamed in particular flaws in the design of the signaling equipment.

Photographs on Chinese Web sites on Friday appeared to show that the collapsed section of the Yangmingtan Bridge’s ramp had fallen on land, not in the river.

According to the official Xinhua news agency, the Yangmingtan Bridge was the sixth major bridge in China to collapse since July 2011. Chinese officials have tended to blame overloaded trucks for the collapses, and did so again on Friday.

Many in China have attributed the recent spate of bridge collapses to corruption, and online reaction to the latest collapse was scathing.

“Corrupt officials who do not die just continue to cause disaster after disaster,” said one post on Friday on Sina Weibo, a Chinese microblogging service similar to Twitter.

Another Internet user expressed hope “that the government will put heavy emphasis on this and investigate to find out the real truth, and give both the dead and the living some justice!” A third user was more laconic, remarking, “Tofu engineering work leads to a tofu bridge.”

Chinese news media reported that the bridge had cost 1.88 billion renminbi, or almost $300 million.

http://www.nytimes.com/2012/08/25/w...chinas-infrastructure-concerns.html?ref=china

Problem: A major $300 concrete bridge succumbed to China quality after just 9 months? Is it safe to be anywhere in China these days? Sewage oil, 9 month bridge collapses, blind high speed rail, bending condos, secret police and censors. What can I do if I can't eat, express, travel or even stay at home?
 
chinese infrastructure quality is very good, the writer focuses on two mishaps and ignores thousands of successful projects. In heavy engineering sometimes sh1t happens (for ex Galloping Gertie). Such mishaps in no way reflect the rate or the quality of chinese infrastructural development. China has developed its infrastructure at a rate nearly three time more than the western world.
 
people are jumping conclusion too quick. the article mentioning 4 trucks. it could be overloaded.
the chinese truck drivers are known crazy and don't care about the law..
in the west, the max legally can drive on land bridge is 43 ton plus truck .
this truck below 110 ton overloade brought a section of the bridge down few months ago in china and not the first..

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people are jumping conclusion too quick. the article mentioning 4 trucks. it could be overloaded.
the chinese truck drivers are known crazy and don't care about the law..
in the west, the max legally can drive on land bridge is 43 ton plus truck .
this truck below 110 ton overloade brought a section of the bridge down few months ago in china and not the first..

Yes it was explained in a press conference.
How can overweight vehicles be kept off the roads is something the lawmakers have to considered! But the frequency of happening of similar events do cause the raise of some eyebrows! Track the culprits down to the core! There raises another issue of the quality of quality checks!
 
the chinese truck drivers are known crazy and don't care about the law..
in the west, the max legally can drive on land bridge is 43 ton plus truck .
this truck below 110 ton overloade brought a section of the bridge down few months ago in china and not the first..
That level of abuse should not have collapsed a new bridge.

I have a more prosaic hypothesis: the bolts in the torsion boxes failed. Not due to a design or workmanship flaw, but because Chinese bolt manufacturers lie about the properties of their products so the bolts themselves were substandard. This is, after all, the same problem we have with Chinese-made hardware in the U.S. - maybe it affects China, too.

A similar problem cropped up during spot-checks on the construction of the Brooklyn Bridge over a hundred years ago: the steel wire of the bridge cable was substandard. The solution was to add ~16% more strands to the bridge cable - after finding another steel wire supplier, of course.
 
That level of abuse should not have collapsed a new bridge.

I have a more prosaic hypothesis: the bolts in the torsion boxes failed. Not due to a design or workmanship flaw, but because Chinese bolt manufacturers lie about the properties of their products so the bolts themselves were substandard. This is, after all, the same problem we have with Chinese-made hardware in the U.S. - maybe it affects China, too.

A similar problem cropped up during spot-checks on the construction of the Brooklyn Bridge over a hundred years ago: the steel wire of the bridge cable was substandard. The solution was to add ~16% more strands to the bridge cable - after finding another steel wire supplier, of course.

a new shirt can be cut with a pair of scissors, anytime!
 
I dont think we should deny or shy away from these type of problems, its better to admit our problems and mistakes and try to correct those problems instead of living in denial. Otherwise we will never improve ourselves.

We have some serious quality issues from poor quality infrastructure(roads, bridges, buildings), high speed train crash due to poor testing, milk scandals, poor quality products from toys to various other goods.
We must address these problems. The government must improve supervision and monitor these things, because it harms our national image globally.

But for this New York Times article to pick only the negative things about china is typical western propaganda. You never hear them do a story about our good infrastructure. When you build so much so quickly, there will be deadweight losses. Western media always like to cheer anything that goes wrong in china, they are so jealous that we are rising so fast the only thing they have left to attack us with is to laugh at our few failures. While they ignore their failures and their problems which are massive.
 
OMG overload!? with only 4 trucks? A bridge in Vietnam even was traffic jammed for long hours, lucky it was not overloaded...

duong-tren-cao-tac-nghen-giaoduc.net.vn.jpg


duong-tren-cao-tac-nghen-giaoduc.net.vn-3.jpg


duong-tren-cao-tac-nghen-giaoduc.net.vn-5.jpg
 
OMG overload!? with only 4 trucks? A bridge in Vietnam even was traffic jammed for long hours, lucky it was not overloaded...

Really? unfortunately reality don't agree with you though, vietnamese bridge collapsed even unloaded, how do you like it?
Bridge section collapses in Vietnam; 43 dead - Houston Chronicle
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A Japanese-funded bridge under construction in southern Vietnam collapsed on Wednesday, killing up to 60 workers and injuring around 150 in the country's worst such disaster.

Btw, bridge collapsing happened everywhere, even your new found sugar daddy the USA

bKBCj.jpg

BRIDGES COLLAPSIN

Lastly, at least act like a normal human being for once in your life, "stop pouring salt on others wound" have some respect for the unfortunately injury people and deaths, hopefully i'm not asking too much though.
 
In the past, without electronic computation for engineering, bridges such as this are heavily overbuilt, heaped with extra redundancy and supports.

Nowdays, most bridges and buildings use the minimal amount of materials and cost necessary to past inspection tests. Combine that with potential substandard materials and construction, you get modern infrastructure with much shorter lifespans than older infrastructure. Overloading one side of the road with overweight vehicles doesn't help the matter but it was an accident that shouldn't of occurred, regardless.
 
Really? unfortunately reality don't agree with you though, vietnamese bridge collapsed even unloaded, how do you like it?

This is Cần Thơ bridge, it collapsed a bridge abutment when was in the process of construction.

It is not overloaded.

It's funny when people blame 4 truck made overloading a bridge. It's not as fragile as you think, unless it was stolen too much material.

Cần Thơ Bridge today:

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cauCanTho.jpg
 
In the past, without electronic computation for engineering, bridges such as this are heavily overbuilt, heaped with extra redundancy and supports.

Nowdays, most bridges and buildings use the minimal amount of materials and cost necessary to past inspection tests. Combine that with potential substandard materials and construction, you get modern infrastructure with much shorter lifespans than older infrastructure. Overloading one side of the road with overweight vehicles doesn't help the matter but it was an accident that shouldn't of occurred, regardless.

They should have taken the overloading in to consideration as the chinese vehicle market is exploding and expanding rapidly .
This is just corruption . reminds of the Sichuan earthquake .

Isnt there some effective anti corruption system in china yet ?? Sichuan legalities were disaster.hope this too wont end the same way
 
just as i suspected. it was over abuse overloaded..

trucks weigh around 100 tons each. bridge section can handle max 55 tons..
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But for this New York Times article to pick only the negative things about china is typical western propaganda. You never hear them do a story about our good infrastructure.
Not anti-Chinese at all but typical "if it bleeds it leads" mind-set of our media. Everyone gets tarred with the brush and few get painted nicely.

When you build so much so quickly, there will be deadweight losses.
A new bridge should not fail so quickly. I don't believe Chinese engineers would cut corners and build it too lightly. The Minneapolis I-35W failure a few years ago is instructive: although the bridge was built with a flaw in the design, it nevertheless lasted for decades until the load increased 20% due to paving, the structure was weakened from corrosion, and an extra-heavy concentrated load was added.

Corrosion and overloading are most unlikely factors here. Something else is at play.
 

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