Αξιοσημείωτα Κτίρια και Τεχνικά Έργα!

[Alexander]

http://www.youtube.com/watch?v=HxTZ446t ... r_embedded
http://www.youtube.com/watch?v=xlOS_31U ... r_embedded
http://www.great-engineering.com/califo ... speed-rail
http://www.great-engineering.com/plan-abu-dhabi-2030

όχι και τόσο "φωτογραφίες" αλλά οκ...

[merde_conserve]

Μετά από το εξαιρετικό site που πρότεινε ο Alexander, το θέμα μετονομάστηκε για να περιέχει πιο ευρύ πλαίσιο υλικού!
Δείτε και αυτό το έπος:
http://www.great-engineering.com/oresund-bridge-megastructures
8 χλμ γέφυρα, ένα νησί και μία υποθαλάσσια σήραγγα δε μας χαλάνε

[lawine]

Πρόσφατη Κατάρρευση 7όροφου κτηρίου στην Κολωνία, που προκλήθηκε από διπλανή εκσκαφή του μετρό.

cologne metro.pdf

(1.25 MiB) Έχει μεταφορτωθεί 255 φορές

Και ένα βιντεάκι που δείχνει το μηχανισμό της αστοχίας.
http://www.wdr.de/mediathek/html//regional/2009/03/09/aktuelle-stunde-ursache.xml

[lenore]

στη Σανγκάη, ενα κτίριο που... έγειρε !

http://gizmodo.com/5304233/entire-new-1 ... i/gallery/

[Alexander]

boing! το πήρε ο αέρας?

[merde_conserve]

Κάποιοι περάσαν τις κινέζικες Θεμελιώσεις νύχτα!

[neaoktana]

Όπερ μεθερμηνευόμενο : Κάποιοι δέχθηκαν - ανέχθηκαν - εξηναγκάσθησαν (?) ίνα
"τους εξαπολύσουν κατά της Κοινωνίας" (*)

(*) κλοπυράϊτ από Λ. Μπιτσάκο 1972

[lawine]

SATURDAY'S deadly collapse of an apartment building in Shanghai's Minhang District was the result of "an elementary mistake," and the builder should have paid attention to "obvious" warning signs that the project was dangerously in trouble, a source close to the investigation into the mishap told Shanghai Daily yesterday.
After examining the wreckage and photos, investigative team members suspect the building toppled on its side because of an excavation project designed to create an underground garage for the nearly completed 13-story structure, the source said.
A large amount of dirt from the garage excavation was piled up alongside the building, and the weight of the dirt combined with heavy rain apparently caused the building's foundation to shift and the structure to tip over.
That preliminary accident scenario was provided by Wu Hang, an assistant to Jiang Huancheng, who is a member of a 12-person investigative team composed of architectural and government officials that was set up by the city government to find out what caused the collapse.
Jiang was the designer of Shanghai's landmark Oriental Pearl TV Tower, and Wu is his assistant at Jiang Architects & Engineers Co.
It could not be learned when the full report would be released.
The building collapsed on Saturday morning at the Lotus Riverside residential complex along the Dianpu River. The structure was part of an 11-building community developed by the Shanghai Meidu Real Estate Co Ltd and built by Shanghai Zhongxin Construction Co.
Apartment owners were scheduled to begin moving in by the end of the year.
"We believe that the cause of the collapse was technically very simple, based on what all the evidence has shown," Wu said.
"It's common sense among construction professionals that the earth from an underground pit should be removed as soon as possible to keep it from causing too much pressure."
An architectural engineering professor from Tongji University who asked to remain anonymous echoed Wu's view. He said the collapse of a flood wall next to the earth pile a day before the building fell proved the pressure from the weight of the debris had changed the underground structure of the area.
Wu said there were obvious warning signs to indicate impending danger, but they were neglected by the builder.
On Friday, local media reported cracks in the flood wall along the Dianpu River. The builder, however, continued digging the underground garage and piling the mud next to the building during the night. The building toppled shortly before 6am the next day following a heavy thunderstorm. A worker who was inside the building at the time died.
The investigation experts found that no reinforcing structures had been installed around the pit, Wu said.
"Shanghai has a soft soil structure," he said. "The builder should have been aware of that basic knowledge and used supports in the digging process. The mistake was unbelievable."
City construction authorities were continuing their round-the-clock monitoring yesterday of all the other buildings inside the Lotus complex as well as several nearby residential buildings. All were reported to be safe so far.

According to officials at Guangqi the builder could have saved up to seven million yuan (US$1.02 million) by keeping the excavated earth inside the construction site. It could then be used on green belts in the residential compound and there would have been no cost for transportation.
The earth excavated from an unfinished garage beneath the collapsed building was piled up to nine meters high.
The dumped earth and the empty space under the structure combined to upset the foundations of the building, and caused the collapse, Wu Hang, an assistant in the investigative team set up by the city government, said in previous reports.

Πηγή ShanghaiDaily.com

[lenore]

Η Ρόδα - Falkirk Wheel

Το κανάλι Forth and Clyde, το οποίο συνδέει την Glasgow με την δυτική ακτή, κατασκευάστηκε το 1777 μεταξύ του λιμανιού Grangemouth και Falkirk. Μεταξύ Falkirk και Edinburgh εδόθη στη χρήση το κανάλι Union το 1822. Δεδομένου του ανωμάλου του εδάφους η πλωτή συγκοινωνία μεταξύ Glasgow και Edinburgh μπορούσε να γίνει μόνο με την βοήθειαse ενός συστήματος 11 σταθμών.
Η υψομετρική διαφορά μεταξύ των δύο καναλιών ήταν 24 μ.
Το 1963, μετά περίπου 150 χρόνια λειτουργίας, το σύστημα των σταθμών καταργήθηκε . Αντικαταστάθηκε με την Ρόδα του Falkirk το 2002, που είναι σήμερα το σύμβολο της μοντέρνας Σκοτίας.
Το μόνο περιστρεφόμενο τμήμα είναι ένας μοχλός με δύο μπράτσα. Το κάθε μπράτσο κρατά μία γόνδολα γεμάτη με νερό μέσα στην οποία πλέουν τα πλοιάρια.

http://www.youtube.com/watch?v=n61KUGDW ... re=related
http://www.youtube.com/watch?v=OZnhZccz ... r_embedded

Αποτελείται από δύο κανάλια,το άνω και το κάτω.Το πλοιάριο πλησιάζει στο τέρμα του άνω καναλιού, στην άνω γόνδολα

Αρχίζει η περιστροφή

Μετά την περιστροφή ,έτοιμοι για "δρόμο"

487px-Falkirk_Wheel_Boat_Entry_SMC.jpg (68 KiB) 3223 προβολές

Η όλη διαδικασία διαρκεί 15 λεπτά
Μία γόνδολα έχει μήκος 25 μ. και βάρος 300 τόνους συμπεριλαμβανομένων του νερού και του πλοιαρίου

Οι γόνδολες γεμίζονται με ίση ποσότητα νερού και το πλοιάριο εκτοπίζει ίση ποσότητα νερού ( σύμφωνα με την αρχή του Αρχιμήδη ).
Κατ’ αυτόν τον τρόπο το σύστημα βρίσκεται συνεχώς σε ισορροπία. Για μια περιστροφή 180 μοιρών του γιγαντιαίου μηχανήματος η γεννήτρια των 22.5 kW έχει ανάγκη μίας κατανάλωσης του 1,5 kW/h.

Σε fast-forward:

[SoundOfSilence]

Την περασμένη Δευτέρα συνέβη ένα ατύχημα με 60 νεκρούς στο υδροηλεκτρικό φράγμα Sayano-Shushenskaya στη Σιβηρία, 1ο στη Ρωσία και 5ο στον κόσμο:

πριν

μετά

2009 accident

On 17 August 2009, the station suffered a catastrophic "pressure surge" known as a water hammer.[6][11] Water immediately flooded the engine and turbine rooms and caused a transformer explosion.[12] As of 23 August 2009, 68 people were found dead while 6 people are still listed as missing.[13]

Power generation from the station ceased completely following the incident, with the resulting blackout in residential areas being alleviated by diverting power from other plants. Aluminium smelters in Sayanogorsk and Khakassia were completely cut off from the grid before power supplies were replaced using alternate power sources.[2][6] Rusal warned that in the longer term it may lose up to 500,000 tons of aluminum output due to the power shortage, and called for accelerating the construction of the Boguchanskaya hydroelectric power station to replace lost generating capacity.[9]

The accident caused an oil spill as at least 40 tonnes of transformer oil was released, which spread over 80 km (50 mi) downstream of Yenisei.[11][14]

The plant is expected to restart its operations within 1 to 1½ months, while the complete repair of the power station may take up to four years.[2] According to Russian Energy Minister Sergei Shmatko the rebuilding of the engine room alone would cost $1.2 billion.[9]

The cause of the accident is unclear. Terrorist action is excluded by officials.[15][16] Defective turbines and a rise in pressure in the pipes are speculated to be possible causes.[9] According to Alexander Toloshinov, a former general director of the plant, the accident was most likely due to a "manufacturing defect" in a turbine.[14]

Πηγή
Φωτογραφίες και οικονομική ανάλυση εδώ