Method for construction of underground continuous steel jacket box
A technology of underground diaphragm wall and construction method, which is applied in the direction of excavation, artificial island, sheet pile wall, etc., can solve problems such as inability to meet requirements, and achieve the effects of convenient installation in time, reducing deformation and reducing impact.
Active Publication Date: 2008-03-26
SHANGHAI CONSTR NO 1 GRP
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Problems solved by technology
[0002] In the prior art, there are many construction methods used for foundation pit enclosure, mainly including underground walls, drilled piles and water-stop curtains, SMW construction methods and other enclosure processes. These foundation pit enclosure methods are only suitable for foundation pit structures Simple foundation pit enclosure; but for the foundation pit enclosure with many underground structures, continuous pits, pits in pits, overlapping foundation pit planes, and different elevation depths, the above traditional enclosure methods cannot meet the requirements
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[0019] The construction method of the present invention can start from the construction method pile sealing wall to carry out the continuous wall steel box construction in one direction, and can also start from the middle groove section to construct on both sides in turn. The following is combined with the accompanying drawings to start the continuous wall steel box from the middle. Construction is taken as an example to further illustrate the specific implementation of the present invention.
[0020] (1) As shown in Figure 1, at first the first auxiliary groove section A is grooved, cleared, the lower reinforcement cage, the lower first lock pipe 1, and poured concrete;
[0021] (2), as shown in Figure 2, when the concrete is initially set, the first lock pipe 1 is pulled out, and the steel sleeve box 4 is inserted in the first auxiliary groove section A;
[0022] (3), as shown in Figure 2, the second auxiliary groove section B adjacent to one end of the first auxiliary groov...
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The invention discloses an underground diaphragm wall steel lagging box construction method. It includes the following steps: forming groove segment to groove; cleaning hole; pouring concrete; cutting into steel lagging box; doing as the same for the adjacent; drawing out; cutting it into the second finished groove segment; filling back the first cavity by earthwork. The method adopts ''one male and one female'' groove segment jumping type to use steel lagging box to construct. It can reduce the possibility of sinking and collapsing of approach wall, and the influence on groove wall earth from outer loading. It has the advantages of fast construction speed, good foundation ditch lump protection effect, and obvious economic benefit.
Description
technical field [0001] The invention relates to a construction method for foundation pit enclosure, in particular to a construction method for an underground continuous wall steel casing. Background technique [0002] In the prior art, there are many construction methods used for foundation pit enclosure, mainly including underground walls, drilled piles and water-stop curtains, SMW construction methods and other enclosure processes. These foundation pit enclosure methods are only suitable for foundation pit structures Simple foundation pit enclosure; but for foundation pit enclosure with many underground structures, continuous pits, pits in pits, overlapping foundation pit planes, and different elevation depths, the above traditional enclosure methods cannot meet the requirements. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a foundation pit protection device with high construction efficiency and good foundat...
Claims
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IPC IPC(8): E02D29/02E02D5/20E02D17/02
Inventor 王志刚戴志杰卫军明周磊
Owner SHANGHAI CONSTR NO 1 GRP