Position:China Plastic Machinery Network>Domestic IT>Hangzhou bay crosses Hai Daqiao to use p c endurance board makes windbreak
Hangzhou bay crosses Hai Daqiao to use p c endurance board makes windbreak
From;  Author:Stand originally
Hangzhou bay crosses Hai Daqiao project on November 18, 2003 start working, predict will at complete in June 2008 have transport service, and windbreak of have the aid of slow down wind speed, enhance security of drive a vehicle.
Hangzhou bay crosses Hai Daqiao to be located in horn mouth of Qian Tangjiang, if encounter east wind or southeast wind when, horn mouth will form " narrow tubal " effect- - wind-force turns over times. In the meantime, height of bridge of channel of big bridge north and south is close 60 meters, also can enhance maritime wind-force. And Hangzhou bay crosses the sea big bridge place spans condition of water area weather is complex, typhoon and weather of sex of calamity of paroxysmal little scope happen from time to tome.
Accordingly, hangzhou bay crosses Hai Daqiao to will use windbreak enhance security of drive a vehicle. Hangzhou bay crosses the message of command post of Hai Daqiao engineering to show, windbreak barrier use staying power of polycarbonate p c board, design service life 20 years, the project needs altogether 20 thousand windbreak. With aid university construction project quality detects the proof of report of wind tunnel test that the station finishs: In wind speed 53 - second of 56 meters of / relapses below action, barrier without produce interstitial damaged.
As we have learned, installation windbreak highest can fall wind speed below 8. s of 1 m / . Fall in condition of 11 class windstorm namely, windbreak can fall bridge floor wind speed to be controlled to 8 class, can assure have transport service. Current, circular arc of boreal channel bridge windbreak had begun to install, the project predicts to be by this year December finishing.


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