I. Literature review
Economic globalization, facilitation of international trade, containerization of international transportation and wide application of high technology have created rare opportunities for the development of ports. The functions of ports have also expanded from the initial simple cargo handling and distribution to the functions of loading and unloading, industry, commerce, logistics and information, and played an important role in developing a region or city into a logistics center, a financial center, a trade center and an information center. In terms of port construction, China will make the old port area a specialized, intensive and large-scale freight base and form a new economic growth point for sustainable development through large-scale technological transformation in accordance with the principle of accelerating development and moderately advancing.
At present, the new technological revolution represented by information network technology has become the fundamental driving force to promote the globalization of the world economy.
As a traditional basic industry, port can achieve greater development in market competition without the support of modern science and technology and the transformation and driving role of information technology in traditional industries. Technological progress and innovation have become the key factors affecting the development of modern ports.
We always adhere to the development strategy of rejuvenating Hong Kong through science and technology, and pay attention to transforming old docks and building new ones by using high and new technologies.
Improve production efficiency and service quality, and make the port production mode change from labor-intensive to technology-intensive. In order to better graft and transform traditional industries, we have established a national technology center, and strengthened comprehensive research on port development strategy, market development, enterprise management, development and application of new technologies and new processes, making it a hub for port technological innovation and scientific and technological progress.
According to the needs of the development of information technology, especially network technology, we have established a port information center to actively accelerate the popularization and application of information technology in port production. With more than 80 shipping companies, customs, agents and stations at home and abroad, EDI networking has been realized, and paperless rapid transmission of container information has been realized through the Internet. In order to share information resources in Hong Kong, a local area network was established. Established a modern production scheduling system and office automation information network system.
Advanced loading and unloading equipment and technology at home and abroad have been widely adopted, and the main goods such as coal, crude oil and ore have achieved streamlined and systematic loading and unloading operations, and the port modernization level has been significantly improved. Among them, the single loading efficiency of coal is 4500 tons/hour, the single unloading rate of ore is 5000 tons/hour, the maximum loading efficiency of container bridge is 30 natural containers, and the loading and unloading efficiency of crude oil is 654.38+100000 cubic meters/hour. At the same time, it is also equipped with world-advanced pilot boats. Advanced equipment such as 5000 horsepower large tugboat and radar communication navigation system ensure the safe and timely approach and departure of large ships. Large-scale technological innovation has improved the technological content in port production, achieved higher quality and higher level of service, and met the needs of shipowners and shippers.
Second, data analysis and scheme primary selection
(1) Overall layout
The wharf is arranged about 150m downstream of Xiangkou Ore Wharf, with a wharf length of 50m and a berth length of 90m. The front line of the wharf is basically parallel to the flow direction line and located near the -6m contour line. The wharf adopts floating wharf structure, which is mainly composed of steel barges and approach bridges. The plane size of the steel barge is 50 12m, and the approach bridge consists of a movable steel approach bridge with a span of 484.5m, a 78m cast-in-place pier and a fixed approach bridge with a length of 107.52m and a width of 3.0m.
(2) Loading and unloading technology
According to the practical experience of similar projects, liquid nitric acid is transported by pipeline in floating wharf, which is convenient for loading operation. The designed liquid nitric acid outlet is transported from the land acid tank farm to the oil storage tanker through pipelines, and then loaded by hoses.
Main loading and unloading process:
Liquid nitric acid outlet: nitric acid tank, nitric acid pump, bridge approach pipeline, valve, flowmeter and barge pipeline.
Hose boat
Auxiliary process flow:
After each shipment, use compressed air to blow the medium in the hose onto the ship. Usually, the supervisor does not purge, but during maintenance, the medium in the pipeline is blown by compressed air to the acid storage tank on the ship or at the tail. The cleaning direction is: cleaning the materials of the steel approach bridge and barge section of the wharf to the ship; The residual liquid in the fixed approach bridge and land pipeline is swept to the tank farm.
(3) Hydraulic structures
According to the natural conditions such as hydrogeology of this project, combined with the requirements of general layout and loading and unloading technology, two schemes are put forward for hydraulic structures.
Option 1:
The wharf is a floating wharf, which consists of a steel storage ship and an approach bridge. The plane size of the steel storage ship is 50 12m. The approach bridge consists of a movable steel approach bridge with a span of 484.5m, a 78m cast-in-place pier and a fixed reinforced concrete approach bridge with a length of 107.52m and a width of 3.0 m. The fixed reinforced concrete approach bridge adopts an elevated bent structure, and the approach bridge and pier pile foundation adopt Ф 800 bored piles.
Option 2:
The wharf is a floating wharf, which consists of a steel storage ship and an approach bridge. The plane size of the steel storage ship is 50 12m. The approach bridge consists of a 484.5m movable steel approach bridge, a 78m cast-in-place pier, two 483.0m fixed steel approach bridges and two 55m cast-in-place piers. Ф 800 bored pile is used for pier pile foundation.
Third, design the task schedule.
1, literature review and foreign language translation 1.5 weeks.
2. The overall layout is 1.5 weeks.
3. The loading and unloading process is designed as 1 week.
4. It takes 2 weeks to draw the plan of wharf structure.
5. The estimated design cost is 1 week.
6, structural calculation and drawing for 3 weeks.
7. Organize and summarize the design reviews of 1 week.