Threading method for steel sinking well bottom joist
A steel caisson and threading technology, which is applied to caissons, ships, buildings, etc., can solve the problems of lack of convenience and reliability
Inactive Publication Date: 2009-10-28
交通部广州打捞局
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Problems solved by technology
[0002] In the construction of marine engineering and hydraulic engineering, the use of steel caissons generally does not need to close the bottom, but according to the needs of salvage projects, especially in the salvage projects of sunken ships and sunken objects that require special protection, the steel caissons are sunk to the bottom to contain After the fished object is recovered, closing the bottom of the steel caisson can turn the steel caisson into a box, so that the sunken ship and sunken objects can be salvaged together with muddy water. However, there is no way to seal the bottom of the steel caisson underwater. Convenient and reliable methods and equipment
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[0014] Such as figure 1 As shown, before the sinking of the steel caisson 1, the threading wire rope 2 that runs through the installation holes on both sides of the steel caisson is preset. Mounting hole leads to the mounting hole on the other side, and wire rope guide frame 17 is installed on the steel caisson wall as auxiliary during threading.
[0015] Such as figure 2 As shown, a bottom joist threading frame 5 is installed on the bottom joist outlet side of the steel caisson, and the bottom joist threading frame is composed of a pulling jack 6 and a steel frame, and the traction wire rope 3 is connected to the pulling jack 6; Utilize the air bag 7 to increase the buoyancy of the bottom joist 4, the bottom joist 4 is placed on the installation hole position of the bottom joist entrance of the steel caisson 1 by the diver, and is connected on the traction wire rope 3; The traction wire rope 3 is pulled section by section until the bottom joist 4 is pulled to the side wher...
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The invention relates to a method for threading and installing a holding beam at the bottom of an underwater steel open caisson, comprising the steps of: installing a holding beam threading rack on one side of the steel open caisson, connecting a hauling wire rope on a lifting jack of the threading rack, threading the holding beam from an mounting hole arranged on the other side of the steel open caisson and connecting on the hauling wire rope, pulling the hauling wire rope step by step by using the pulling force of the lifting jack until pulling the holding beam to the side provided with the lifting jack, protruding two mounting holes positioned at the crotch of the holding beam and passing through the steel open caisson out of the steel open caisson, and installing a pin on the crotch to allow the a closing plate at the other end of the holding beam to be tightly attached to and fixed on the wall of the steel open caisson. The holding beam is provided thereon with a high pressure water pipe, and the displacement during the pulling process of the holding beam is controlled by using high pressure sprinkling. By using the method, the steel open caisson can seal the bottom after accommodating the salvaged matters, a plurality of holding beams and the steel open caisson can form a commonly forced container, so as to reach the purpose of completely moving the salvaged matters.
Description
technical field [0001] The invention relates to an underwater installation project of a steel structure, and relates to a method for penetrating and installing a bottom joist beam on an installation hole of an underwater steel caisson to seal the bottom of the steel caisson. Background technique [0002] In the construction of marine engineering and hydraulic engineering, the use of steel caissons generally does not need to close the bottom, but according to the needs of salvage projects, especially in the salvage projects of sunken ships and sunken objects that require special protection, the steel caissons are sunk to the bottom to contain After the fished object is recovered, closing the bottom of the steel caisson can turn the steel caisson into a box, so that the sunken ship and sunken objects can be salvaged together with muddy water. However, there is no way to seal the bottom of the steel caisson underwater. Convenient and reliable methods and equipment. Contents o...
Claims
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IPC IPC(8): B63C7/00E02D23/02
Inventor 吴建成王仁义张永强孙召才
Owner 交通部广州打捞局