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Transverse comb type ship launching ship girder load calculation of

1 is the weight of slab method, for the moment equilibrium Series 2, Series 3 is the calculation method of rubber roller. Figure 9 obtained three calculation methods ship girder load curve, a,[link widoczny dla zalogowanych], a, a, ∥ \ / nt, r ± ■ i ~ a _, ~ a ~ a ~ a I_ I, 12 ships Zhou Zheng Design and Research with the transverse comb type ship launching ship girder load calculation of the weight center of gravity, reducing ship girder support reactions, or in ship girder support reaction force at the bearing capacity of the local strengthening of the structure. ; 6l horizontal trim proposed ship berth into the water is not greater than 0.2. Otherwise, due to damage from floating vessels and rotating the safety of ship girder accident. I7I ship girder loads can not exceed the ship girder check the allowable load rating of 90%, leaving the necessary safety margin. i8; towing winch when the ship launching ship girder requirements of synchronous motor starting, ensure that the ship during launching the force balance. I9I in the design of the ship into the water when the ship girder should consider the amount of compression, the height of left margin necessary to prevent the ship's bilge water board and the berth impact damage. l10I horizontal berth when the ship was launched from the floating to calculate the water depth, shallow water causes the water to prevent ships hold. Protection of water traffic safety, water pollution prevention from ships oil tankers to carry out special rectification in Jiangsu to conscientiously implement the State Council Decree No. 344 \Inspection Bureau decided now until March 31, 2003, the province engaged in oil transport ships to carry out special rectification. April 1, 2003 onwards, where or by rectification without the special Ship Inspection Bureau of Jiangsu Province, Jiangsu provincial tanker reinspection, after the expiration of the certificate of airworthiness, Jiangsu Province, vessel inspection agency will not accept the operation of the vessel inspection . Water is the largest province of Jiangsu, has more than 2,200 rivers and streams Article navigable mileage of 23800km. In recent years, with the development of national economy, oil sales market continued to expand, in the oil transport ships are also developing rapidly. According to statistics, the province has all kinds of vessels operating more than 1,000 oil tankers. Most oil tankers meet the regulatory requirements,[link widoczny dla zalogowanych], better quality ships, ship safety equipment and facilities. But there are some oil tankers, especially small oil tanker, the owner and the simple pursuit of economic efficiency for the transport owners, often into the low, low cost rural shipyards to build oil tankers. These towns shipyards due to technical weak, poor skills of workers, combined with a variety of testing equipment behind or are incomplete, leading to build the factory low level of tanker technology, can not meet the relevant national laws and regulations, norms and technical standards. And even some owners to save money and seek quick,[link widoczny dla zalogowanych], dry goods transport in the original transformed into a tanker ship. These tankers can not be completely safe navigation and safe operation with the technical conditions, once to the safe navigation and safe operation of water caused harm. Moreover, if oil tanker spill occurred, would cause serious environmental pollution of the waters. From the Ship Inspection Bureau of Jiangsu Province, Jiangsu provincial examination results tankers, these tankers problems are: the cargo tank area is unreasonable structure; fire, life-saving equipment with inadequate; first isolated voids and auxiliary machinery space There pipeline connection; circuit layout messy, wire system does not meet the requirements; distribution system without protection and so on. For problems, Ship Inspection Bureau of Jiangsu Province to develop measures to strengthen the province's oil tanker than the construction of tests, the decision on the tanker to carry out special operations to rectify the province. Consolidation in two stages. The first stage: From now until September 25, 2002. For shipping companies across the province to be established by the provincial Bureau of Shipping Inspection projects, conduct self-examination of the oil tanker company. On this basis, the provincial Bureau of Shipping Organization review. Review the problems of oil tankers, the issue of the provincial Bureau of Shipping \The second stage is September 26, 2002 to March 2003 31. By the relevant shipping companies under the \From 1 April 2003 onwards, where the rectification or without special re-inspection by the provincial Bureau of Shipping of oil tankers, Jiangsu Province, after the expiration of the certificate of airworthiness ship survey organizations will not accept the operation of the vessel inspection. In order to improve the province's oil tanker special rectification, the Provincial Bureau of Shipping in July 2002 held the municipal Bureau of Shipping in mid-Secretary in charge of meetings devoted to the consolidation of the tanker were to mobilize and layout; in late July,[link widoczny dla zalogowanych], also held a tanker technical rectification course, invited to test the oil tanker surveyor with extensive experience in design units of the ship, shipyard, tanker shipping companies and is responsible for the rectification work carried out professional training of survey personnel. (Su-Sea)
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