High-bearing capacity prestressed tubular pile and its production method
A technology of prestressed pipe piles and bearing capacity, which is applied in the direction of strengthening and forming, which can solve the problems of construction cost, waste, and high construction cost of aggravated caps, and achieve the effects of reducing bursting piles, reliable quality, and improving structural mechanical properties
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[0038] Example 1
[0039] To produce 10 PSSC-ABΦ400 (150, C60) pipe piles, first make steel cages and connecting end plates according to the national standard process requirements of PC-ABΦ400 (95) pipe piles, and put them in a steel mold, and put the concrete (see Table 3) ) Use a feeder to evenly inject the steel mold to cover the steel mold; place the steel mold on the centrifuge and centrifuge (see Table 5), pour the remaining slurry after completion; place the steel mold at an inclination angle of 15° Into the steam curing tank, in order to prevent the poured concrete from losing, the bottom end is plugged, and the crushed stone specification is ≤25mm, the sand fineness modulus is 2.6, and the water-cement ratio is 0.28 for secondary grouting (see table 4), the amount of pouring is 0.029m per meter 3 , The compactness of concrete is 1.1; put the steel mold on the centrifuge and centrifuge (see Table 5), pour the remaining slurry after completion (see Table 7 for wall thicknes...
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[0046] Example 2
[0047] Repeat Example 1, with the following differences: PSSC400-110 (C60) pipe piles are produced, and the secondary filling amount is 0.01m. 3 / m, the results of the experimental data, the wall thickness and the ultimate bearing capacity of the structure have reached the design requirements.
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[0048] Example 3
[0049] Repeat Example 1, with the following differences: PSSC400-200 (C60) pipe piles are produced, and the secondary filling amount is 0.03m 3 / m, after the second centrifugation, the wall thickness is 170mm; the core-filling is performed again, and the core-filling amount is 0.003m 3 / m, the wall thickness reaches 200 (that is, solid), the results of the experimental data wall thickness and structural ultimate bearing capacity meet the design requirements.
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