High-strength pipe pile production method

Abstract

The invention provides a high-strength pipe pile production method. The high-strength pipe pile production method comprises the following steps that a centrifuged pipe pile mold is maintained for 4-8hours at the normal pressure through steam at the temperature of 60-100 DEG C and then maintained for 3-5 hours through high-pressure steam at the pressure of 0.8-2.8 MPa, the mold is dismounted aftercooling, and then pipe pile machining can be completed. According to the scheme, the structural strength of a pipe pile is effectively improved, and the strength of the pipe pile can reach C95 or above; and meanwhile, the mold dismounting effect is effectively improved, the pipe pile is effectively prevented from being broken, the structure of the pipe pile is prevented from being damaged, the influence of thermal expansion and cold contraction on the pipe pile solidification effect is avoided, the pipe pile maintenance effect is effectively improved, and large-batch production and machiningare facilitated.

Description

technical field [0001] The invention relates to the production technology of pipe piles, in particular to a production method of high-strength pipe piles. Background technique [0002] The role of pipe piles is to transfer the load of the superstructure to the deep soil layer with strong bearing capacity, or to compact the soft soil layer to improve the bearing capacity and compactness of the foundation soil. It is mainly used in railways, industry and civil use Construction, municipal, metallurgy, ports, highways and other fields. [0003] In the Chinese invention patent whose application publication number is CN108081447A, a production process of pipe piles is disclosed, which includes the following steps: mixing and stirring, preparation of reinforcement cages and moulds, pouring, centrifugal maintenance: after stretching is completed, the pipe pile molds are placed Put it on a horizontal centrifuge; stop for 25-35 minutes after centrifugation, put it into a steam curing...

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Problems solved by technology

[0004] In the above-mentioned patents, the pipe pile mold is placed in a steam curing pool, cured at a temperature of 100-120°C for 6-8 hours, then removed from the mold, and the pipe pile is made after natural cooling, but the strength of the pipe pile after demoulding is too high. Low, it is easy to break the pipe pile, the demoulding effect is poor, which affects the processing and production quality of the pipe pile, and is not conducive to energy saving

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