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2017-06-28
Recently, "Zhenhua 13" wheel loaded with Zhenhua Heavy Industries for the Philippines, Manila, North Harbor Pier made seven field bridge and two bridges successfully arrived at No. 16 berth.
"Zhenhua 13" round berthing in the Philippines Manila North Harbor Pier No. 16 berth is a modified berth, the terminal elevation of 2.7 meters, 9.5 meters deep, which is a typical shallow water terminal. Zhenhua transport ship type deep 13.5 meters, according to the conventional program ship unloading, ship unloading ship deck at least 2.0 meters higher than the wharf. In order to make full use of the company's own ship capacity and special equipment on board, Zhenhua Heavy Industry Sea Service Research Institute design team specially designed shallow water terminal ship unloading technology.
In addition, the ship deck is at least 2.0 meters higher than the wharf. It is determined that the ship's deck is at least 2.0 meters higher than the wharf. The ship's deck is at least 2.0 meters higher than the wharf. As the angle of the bridge truck is not allowed to pass through a springboard from the deck to the wharf, it is necessary to reduce the height step by step, and increase the length through the springboard relay to reach the allowable angle of the bridge. The final plan was identified as a four-layer springboard from the deck of the transport ship to the wharf and the use of the ship's hoist traction bridge to shore, the program referred to as "springboard unloading ship."
Field bridge springboard unloading
On the day of unloading the bridge, unexpected things happened. "Zhenhua 13" round in the ballast process stranded, after the measured, more than 8 meters of the pier depth of water, from the ship unloading requirements of the water depth difference is very far, which added to the bridge ship unloading more difficult. Site unloading technology team two senior engineers Liu Jun and Zhao Xin after repeated calculations and deduction, that the current draft conditions in the transport ship, you can let the ship left 2 ° laying springboard, the use of the ship hoist to bridge the bridge to the user terminal. After careful guidance and reasonable arrangements for the unloading technical team, seven field bridges completed the ship unloading in one day, and won valuable time for field bridge commissioning and delivery.
Shore bridge elevated unloading anchor
Unloading Field Bridge at the same time, Liu Jun and Zhao Xin will be with the sea clothing Institute leaders and users to discuss the ship unloading program. "As the bridge unloading bridge when the ship tilted 2 ° off the bridge?" Taking into account the large weight of the bridge, unloading ship due to water depth is not easy to transport the ship from the pier, the risk is not control, the program not! So, is it feasible to increase the number of existing fixtures on the dock? After the calculation, the existing tooling need to increase by 1 meter, the stability of the terminal ship unloading track cannot meet the technical requirements, or not! Technical team through the program comparison, data analysis, the final persuasion terminal to take dredging construction, so that the depth of the pier to reach the required water depth requirements: 9.5 meters.
The bridge is towed through the viaduct
During the dredging period, the design team, in combination with the structural characteristics of the quayside bridge and the structure of the wharf structure, designed the "unloading ship unloading" scheme, that is, the unloading track of the quayside bridge through the 2.0m tire frame simply at the pile head of the concrete structure Ship load will be directly transmitted to the terminal pile foundation, while each additional high tire frame welded together to ensure the stability of the entire unloading orbit. When the transport ship re-landed, after a day of preparation work, only 20 minutes on the safe traction shore bridge, and began the next step up and loaded cart work.
Install the shore bridge to walk
How to reduce the difficulty of the bridge into the rail, to reduce the construction difficulties and operational risks, the design team also innovative design of the jacking program. Before the bridge is dismantled, the bridge will be dismantled, and the shore bridge will be lifted and the roof will be lifted at the anchoring structure on the side of the lower beam. Then, the height of the trolley and the unloading track will be removed. Plus the total height of the delivery trolley, when the overall installation of carts walking agencies, preloaded the flange of the bolt group, the jack can make a trip to the shore bridge.
The ship unloading, sea clothing Institute of innovative shallow water terminal ship unloading technology, the final successful completion of unloading.