Overwater construction method for cross-sea bridge under severe sea conditions

Abstract

The invention discloses an overwater construction method of a cross-sea bridge under a severe sea condition, which comprises the following steps of: 1, obtaining a simulated wave report of a construction sea area so as to simulate a wave field condition at each pier position; 2, a wave period double-element statistical table is compiled, and model selection is conducted on ships; step 3, obtaining motion response of the ship; 4, determining a ship motion threshold value; 5, calculating a constructable ship operation window period according to the ship motion response and the motion threshold value; 6, ship type selection is determined according to the work efficiency requirement; 7, forecasting on-site waves pier by pier; and step 8, forming a wave forecasting and ship aided decision making system, and dispatching the ship according to the system. According to the method, a manager can observe the sea condition and ship information of a construction sea area in an office, effective scheduling is provided by using a wave forecasting technology and a ship window period, the operation efficiency of the marine ships is improved, and efficient construction of the marine ships is guaranteed.

Description

technical field [0001] The invention relates to the field of marine ship construction for cross-sea bridges. More specifically, the present invention relates to a water construction method of a sea-crossing bridge under harsh sea conditions. Background technique [0002] With the vigorous development of my country's economy, more and more engineering constructions are carried out in the marine environment. Compared with calm inland rivers, severe swells often lead to greater swaying motions of construction ships. When the swell is large enough to exceed the operating When it is within the allowable range, it will not be able to meet the accuracy requirements for operations; even under more severe swells, ships need to go to harbor anchorages to avoid danger, so it is necessary to seize the ship construction window as much as possible to carry out operations. On the other hand, due to the number of ships involved in the construction of the cross-sea bridge can reach dozens of...

AI Technical Summary

Problems solved by technology

[0002] With the vigorous development of my country's economy, more and more engineering constructions are carried out in the marine environment. Compared with calm inland rivers, severe swells often lead to greater swaying motions of construction ships. When the swell is large enough to exceed the operating When it is within the allowable range, it will not be able to meet the accuracy requirements for operation; even under worse swells, the ship needs to go to the harbor anchorage to avoid danger, so it is necessary to seize the ship construction window as much as possible to carry out operations

On the other hand, due to the number of ships involved in the construction of the cross-sea bridge can reach dozens of ships, but due to the inconvenience of transportation and communication, especially in overseas projects with worse sea conditions, it is very difficult to organize and dispatch construction ships, which often leads to ships Situations where work efficiency is reduced such as queuing to berth at temporary docks

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