A super-long pcc pile formwork double-layer sleeve connection section and sinking connection method
A double-layer casing and connecting section technology, applied in sheet pile wall, construction, infrastructure engineering and other directions, can solve the problems of lack of sealing, increased wall thickness, complicated disassembly, etc., to achieve convenient transportation, reduce filling coefficient, Ingenious effects
Active Publication Date: 2011-12-28
HOHAI UNIV
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Problems solved by technology
[0005] The purpose of the present invention is to overcome the defects of lack of airtightness, increased wall thickness, complicated disassembly, and difficult alignment in the existing methods, and provide a super-long PCC pile formwork double-layer casing connection section and sinking method for connection
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[0030] Such as figure 1 As shown in the present invention, a method for connecting super-long PCC pile formwork double-layer casing connecting sections of the present invention uses the connection method of inner length and outer shortness, first inside and then outside to realize the pile form connection, including technical steps: (a) pile The mold is in place, (b) align the inner tubes (1), (c) install the first inner tube connecting plate 8, (d) install the remaining inner tube connecting plates 8, (e) install the first outer tube connecting plate 10 , (f) install the rest of the outer tube connecting plate 10.
[0031] Such as Figure 2~Figure 6 As shown, the connecting section of the double-layer casing of the pile form is a double-layer concentric steel casing including an inner pipe 1 and an outer pipe 2, and a transverse support 3 is arranged between the inner pipe 1 and the outer pipe 2 to fix the pile formwork. The lateral supports 3 can be short steel pipes, and ...
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The invention discloses a dual-layer casing connecting section of an overlong PCC (cast-in-place concrete large-diameter pipe) pile mould and a dip mould connecting method. The dual-layer casing connecting section comprises at least two detachable connecting sections, wherein each connecting section comprises inner pipes and outer pipes, and the lengths of the inner pipes is more than those of the outer pipes. The dual-layer casing connecting section is characterized in that bolts are respectively fixed on the two mutually-connected inner pipes, one inner pipe connecting plate passes through the bolts to be connected with the two inner pipes; bolts are respectively fixed on the two mutually-connected outer pipes, one outer pipe connecting plate passes through the bolts to be connected with the two outer pipes; sealing rings are arranged on the ends of the inner pipes and the outer pipes; and an adaptive centering structure is arranged on the connecting end of the two mutually-connected inner pipes. The invention overcomes the limit of height of a construction tool and the problem of poor clearance of a pile driver when obstacles exist in the construction, and has the advantages ofsimpleness in sealing and dismantling the pile mould, convenience for alignment, simple and feasible technology, convenience for operation, strong practical applicability and the like.
Description
technical field [0001] The invention relates to a method for using a pile foundation construction machine tool, in particular to an ultra-long PCC pile formwork double-layer casing connection section and a sinking formwork connection method. Background technique [0002] Cast-in-place concrete large-diameter pipe piles (referred to as PCC piles, patent numbers ZL02112538.4 and ZL01273182.X) use vibration to sink the steel inner and outer double-layer casing cavity structures into the foundation under the protection of closed valve pile shoes Design depth, uniformly inject concrete into the cavity of the structure through the concrete divider, and then vibrate to set out the cavity structure. The cast-in-place concrete thin-walled pipe pile is formed in the annular groove. PCC piles obtain greater bearing capacity with less concrete consumption, so it is an economical and reasonable pile type with superior cost performance. This technology has been successfully applied to la...
Claims
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Inventor 刘汉龙吕亚茹丁选明陈育民张安乐
Owner HOHAI UNIV