Steel cylinder type concrete pressure pipe and design method thereof
A technology for concrete and pressure pipes, applied in computer-aided design, pipes, calculations, etc., can solve problems such as the adverse impact of the mortar cover on the working pressure, the adverse impact of the mortar cover, and the limited allowable strain
Pending Publication Date: 2020-11-03
NINGXIA QINGLONG PIPES IND
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Problems solved by technology
[0004] The first object of the present invention is to provide a steel cylinder type concrete pressure pipe to solve the problem that the allowable strain of the inner and outer concrete or mortar protective layers of the mortar composite steel pipe in the prior art is limited to a certain extent. Technical issues that adversely affect the layers and limit the maximum working pressure
[0005] The second object of the present invention is to provide a design method for steel cylinder concrete pressure pipes, to solve the problem that the allowable strain of the inner and outer concrete or mortar protective layers of the mortar composite steel pipes in the prior art is limited to a certain extent, Technical issues that adversely affect the mortar cover and limit the maximum working pressure
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Embodiment 1
[0078] See figure 1 and figure 2 , The present embodiment provides a concrete steel cylinder pipe pressure; figure 1 Schematic structural concrete steel cylinder pressure pipes provided in the present embodiment, in order to express more clearly the structure using a radial cross-sectional schematic view; figure 2 for figure 1 Local enlargement.
[0079] See figure 1 and figure 2 Combine image 3 and Figure 4 As shown in the present embodiment the cylindrical steel concrete embodiment of a pressure tube 1, comprises an inner liner 10, the protective layer 13 and the steel assembly. Steel Steel assembly includes a first 11 and a second steel.
[0080] 11 by the outer surface of the first steel prestressing wires wound 111 steel cylinder 110 is formed, since the wire 111 is wound directly prestressing steel cylinder 110 to the outer wall, so that the wire 111 of the winding pretension of the steel tube 110 is large compression ; inner liner 10 overlying the inner peripheral side wall...
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Abstract
The invention relates to the technical field of pressure water conveying pipelines, in particular to a steel cylinder type concrete pressure pipe and a design method thereof. The steel cylinder type concrete pressure pipe comprises a lining layer, a protective layer and a steel structure assembly. The steel structure assembly comprises a first steel structure formed by a steel cylinder with the outer surface wound with prestressed steel wires and a second steel structure arranged on the first steel structure in a sleeving manner at an interval, and the second steel structure is formed by a cylindrical reinforcement cage; and the lining layer is attached to the inner circumferential side wall of the steel cylinder, the protective layer wraps the outer circumferential side wall of the steelcylinder, and the second steel structure is arranged in the protective layer. The design method of the steel cylinder type concrete pressure pipe is used for designing the steel cylinder type concretepressure pipe. According to the steel cylinder type concrete pressure pipe and the design method thereof, the prestressed steel wires enable the steel cylinder to be in a large compression state, sothat the allowable design stress of the steel cylinder is increased, on one hand, the internal and external pressure bearing capacity of the steel cylinder type concrete pressure pipe is improved, andon the other hand, adverse effects on the protective layer and the lining layer are reduced.
Description
Technical field [0001] The present invention relates to the field of pressure water pipelines, and more particularly to a steel cylindrical concrete pressure tube and its design method thereof. Background technique [0002] In recent years, through large water-saving projects, improve water-saving infrastructure networks, components water safety security systems, and accelerate the construction of water conservancy modernization, these large water-proof projects require high quality large diameter pressure water pipelines. [0003] In the relevant technique, traditional concrete or mortar composite steel pipes (such as large diameter tubes) are approximately 145 MPa in steel. The reason for the allowable design stress to limit this tube is that the allowable strain of the inner, outer concrete or mortar protective layer is limited. Higher steel stress will cause concrete or mortar protective layer to rupture under pressure, resulting in a harmful rupture, an adverse effect on the...
Claims
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IPC IPC(8): F16L9/153G06F30/17
CPCF16L9/153G06F30/17G06F2119/14G06F2113/14
Inventor 崔卫祥张宪伟安波宋克军孙兆斌高文博
Owner NINGXIA QINGLONG PIPES IND