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天津港船闸位于塘沽海河入海处,随着经济的发展,通过船闸的船舶和车辆越来越多,特别是过往东西两个闸门的车辆由最初的日通过几辆次,载重量最大的不超过4吨,发展到现在的日通过3000多辆次,载重量多数在8吨以上.如此繁重的交通量使得东西闸桥面及上台车原有的结构型式与之不能相适应,千万桥面及闸门上台车的维修周期从开始的十年以上,逐步缩短为五年、三年、两年.不仅如此,每次维修投入的费用也在不断增加,每次维修都会对正常的通航通车造成较大的影响.为改变这种日趋恶化的交通状况,在1966、1977、1989年的大修中都对闸门桥面和上台车的结构进行过技术改进方面的探索,但都收效不
Tianjin Port Ship Lock is located at the sea inlet of Haihe River in Tanggu. With economic development, more and more ships and vehicles pass through the ship lock. In particular, vehicles passing two gates in east and west pass several times from the first day and the maximum load does not exceed 4 tons, developed to the present day through more than 3000 vehicles, most of the load capacity of more than 8 tons.Therefore, so heavy traffic makes the east and west gates of the bridge deck and the original structure of the type can not be adapted to the road, 10 million bridge deck And the gate on the trolley maintenance cycle from the beginning of more than ten years, and gradually reduced to five years, three years, two years. Not only that, each maintenance costs are also increasing, each maintenance will be caused by the normal traffic opened to traffic In order to change this increasingly deteriorating traffic condition, we explored the technological improvements of the structure of gate decks and trolleys during the overhaul of 1966, 1977 and 1989. However, none of them was effective