Steel bell and spigot prestress thin wall concrete pipe

Abstract

The invention relates to a concrete pipe of pre-stress thin wall of a steel bell and spigot. The ratio of the wall thickness d of a pipe core of the concrete pipe to the inner diameter D of the pipe core is Mu, which is not less than one thirty second but not more than one sixteenth; the screw pitch of a pre-stress steel wire is @mm while the diameter of the pre-stress wire is Phi mm, and the @ is not less than 2Phi but not more than 50. The whole structure of the invention is simple, the design is scientific and reasonable and the value of the wall thickness of the pipe core and the value ofthe screw pitch of the pre-stress steel wire are obtained through scientific calculation and have good test effect; the concrete pipe has good durability and impermeability and good water sealing in joint and the construction cost is comparatively low, the maintenance is convenient and the construction and the operation are simple, thereby greatly reducing the transport cost and the construction cost. The concrete pipe of the invention is the concrete pipe of pre-stress thin wall of steel bell and spigot with higher innovation.

Description

technical field [0001] The invention relates to concrete pipes, in particular to a steel socket prestressed thin-walled concrete pipe. Background technique [0002] Steel socket prestressed concrete pipe is a pipe mainly used in municipal, water conservancy, road and bridge, and urban water supply and drainage systems. It is also widely used in industrial water pipelines, farmland irrigation, and factory pipe networks. The core wall thickness of the current steel socket prestressed concrete pipe is designed according to national standards, and its thickness should be greater than 1 / 16 of the inner diameter of the tube core. The main reason for the thick design of the tube core is that the concrete tube needs to bear the high external pressure load caused by the construction covering soil and the high internal pressure load caused by the conveying medium. The concrete pipe of this structure has heavy weight, high cost of raw materials, long production time, and requires hig...

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Problems solved by technology

The concrete pipe of this structure is heavy in weight, the cost of raw materials is high, and the production time is long. It requires high-tonnage hoisting and lifting equipment for installation, which greatly increases the transportation cost and construction cost of the concrete pipe.

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