Design method of composite steel pipe
A technology of composite steel pipe and design method, which is applied in special data processing applications, instruments, electrical digital data processing, etc., and can solve problems such as lack of relatively mature design methods
Active Publication Date: 2021-07-06
NINGXIA QINGLONG PIPES IND
View PDF1 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] The purpose of the present invention is to provide a design method for composite steel pipes to solve the problem to a certain extent that there is no relatively mature design method in the prior art for water pipes that deal with load pressure by increasing the allowable strain.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0059] see figure 1 As shown, the design method of the composite steel pipe provided in this embodiment is used to design, calculate and check the composite steel pipe. The prestressed reinforcement layer 2 is hooped on the outer surface of the steel pipe 3 to form a prestressed steel cylinder, so that the prestressed steel cylinder has a certain precompression stress, so as to achieve the purpose of bearing the total external load of the composite steel pipe in advance. The materials of the inner lining layer 5 and the protective layer 4 are ductile mixed materials, and the inner lining layer 5 and the protective layer 4 are lined on the inner surface and outer surface of the prestressed steel cylinder respectively, so that the prestressed steel cylinder and the inner surface respectively The liner 5 and the protective layer 4 are tightly combined and can undergo a certain degree of simultaneous deformation. On the one hand, the hierarchical structure can be tightly structure...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to the technical field of conveying pipeline equipment, in particular to a design method of a composite steel pipe. The design method of the composite steel pipe comprises the following steps that the working pressure and the instantaneous pressure are determined, and the steel structure area AP of the prestressed steel cylinder is calculated; the steel bar diameter and the steel bar spacing are selected, and the steel structure area AP is distributed into the steel bar reinforcement area As and the steel cylinder reinforcement area Ay; the pre-compressive stress is caculated; anti-cracking stress PK is caculated, and whether the anti-cracking stress is greater than pressure stress Pw under normal work is verified; an external total load Wall is determined according to the external load; and the allowable load Wult of the composite steel pipe is calculated, and whether the external total load exceeds the allowable load Wult or not is verified. According to the design method of the composite steel pipe, unknown parameters related to the structure of the composite steel pipe can be reliably and reasonably calculated, so that the composite steel pipe meets the target performance requirement.
Description
technical field [0001] The invention relates to the technical field of conveying pipeline equipment, in particular to a design method of a composite steel pipe. Background technique [0002] In the related art, the prestressed steel cylinder concrete pipe is usually formed by building high-strength rigid concrete inside, outside or inside and outside the steel cylinder. For this kind of rigid prestressed steel cylinder concrete pipe, some available design methods have been proposed, but for some steel pipes that deal with the load pressure by increasing the allowable strain, there is still no relatively mature design method. Contents of the invention [0003] The purpose of the present invention is to provide a design method for composite steel pipes to solve the problem that there is no relatively mature design method in the prior art for water pipes that respond to load pressure by increasing the allowable strain. [0004] In order to achieve the above object, the prese...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): G06F30/17G06F119/14
CPCG06F30/17G06F2119/14
Inventor 张宪伟
Owner NINGXIA QINGLONG PIPES IND