On-site splicing method for 1/4 cylinder of grid-type steel sheet piles with large cylinder main grid sheet piles
A technology of lattice-type steel sheet piles and steel sheet piles, which can be applied to sheet pile walls, water conservancy projects, artificial islands, etc., and can solve problems such as the inability to pre-assemble master grid steel sheet piles, the inability to complete hoisting and sinking at one time, and high requirements for marine environmental protection
Active Publication Date: 2016-04-27
CCCC THIRD HARBOR ENG
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Problems solved by technology
[0008] The present invention aims at the construction process of the artificial island formed by backfilling the cofferdam formed by the large cylinder of lattice-type steel sheet piles and the breakwater, which is faced with the site conditions of "limited up, down, left, and right" (that is, the height limit of the construction area, shallow water depth, etc.) , poor geological conditions, high requirements for marine environmental protection) and the construction conditions required by the construction period, it is impossible to pre-assemble the main grid steel sheet pile on site, and it is impossible to complete the overall hoisting and sinking of one main grid at one time, and provide a grid type steel sheet pile On-site splicing method of 1 / 4 cylinder of large cylinder main grid sheet pile
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[0052] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.
[0053] This example uses the steel sheet pile grid island wall of the artificial island described in the background technology section as the corresponding construction project to specifically illustrate the implementation process of the on-site splicing method of the large cylinder main grid sheet pile 1 / 4 cylinder of the lattice type steel sheet pile.
[0054] In this example, the implementation of the project has the following conditions:
[0055] 1) The height limit of the construction area. The entire construction area is located in the height limit area of the airport, and the height limit of the construction site of the large cylinder of lattice steel sheet piles is between +30mPD~+60mPD, and the selection of construction equipment is g...
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The invention discloses a one-quarter cylinder on-site splicing method for lattice type steel sheet pile large cylinder main lattice sheet piles. According to the overall method, a full circle main lattice is divided into four one-quarter circular steel sheet pile assembly pieces which are respectively lifted, and therefore the requirements for the lifting distance and the lifting capacity of a crane ship are lowered; meanwhile, the on-site workload is greatly reduced; only the four one-quarter circular steel sheet pile assembly pieces need to be hung, and then four folding piles are spliced. By the utilization of the scheme, under the on-site conditions (namely high construction region limit, shallow water, poor geological conditions and high marine environmental requirements) that all is limited and under the execution conditions including construction period requirements, a lattice type steel sheet pile large cylinder can be accurately and stably lifted and sunken.
Description
technical field [0001] The invention relates to a construction technique of an artificial island on the sea, in particular to a method of splicing 1 / 4 cylinders pre-assembled off-site into a full circle on-site during the construction of a large cylinder of lattice-type steel sheet piles on the sea. Background technique [0002] Artificial islands are generally artificially built land in shallow waters near the coast. As a place for offshore operations or other purposes, most of them are connected to the shore by trestles or undersea tunnels. In a coastal country with developed modern industry, the dense population and crowded cities along the coast have greatly restricted the further development and construction of new enterprises and public facilities, and the problems of residence, traffic, noise, water and air pollution in the original city itself are also difficult. solve. Therefore, the construction of artificial islands has changed or improved the above-mentioned dif...
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IPC IPC(8): E02B17/00E02D7/00
Inventor 徐明贤马松平熊文峰胡雪华蔡福康徐立新苗艳遂周学民高松林濮振强谢锦波马磊磊
Owner CCCC THIRD HARBOR ENG