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CN-122014927-A - Compression-resistant deformation-resistant municipal engineering tool Cheng Gangguan

CN122014927ACN 122014927 ACN122014927 ACN 122014927ACN-122014927-A

Abstract

The invention relates to the technical field of steel pipes, in particular to an engineering steel pipe for municipal engineering, which comprises a pipe body main body, wherein the pipe body main body sequentially comprises a first pipe sleeve, a composite layer and a second pipe sleeve from inside to outside, the composite layer comprises a concrete pouring layer filled between the first pipe sleeve and the second pipe sleeve, hollow pipes and prestressed steel strands are pre-buried in the concrete pouring layer, annular reinforcing ribs are connected to the second pipe sleeve through elastic connecting arms, the annular reinforcing ribs are distributed at intervals along the axial direction of the pipe body main body, tension rods are connected between adjacent annular reinforcing ribs, self-tightening anchors are arranged between the annular reinforcing ribs and the prestressed steel strands, and a dynamic prestress compensation mechanism consisting of the prestressed steel strands, the self-tightening anchors and floating plate-dynamic rods-second springs is combined, so that the technical defects of insufficient pressure resistance, easiness in prestress relaxation and the like of the traditional steel pipe are effectively solved.

Inventors

  • LI HUI

Assignees

  • 佛山市华杨金属制品有限公司

Dates

Publication Date
20260512
Application Date
20260403

Claims (10)

  1. 1. The utility model provides a municipal works with resistance to compression and deformation is used Cheng Gangguan, its characterized in that includes body main part (10), body main part (10) are from inside to outside including first pipe box (11), composite bed (12) and second pipe box (13) in proper order, the both ends of first pipe box (11) are link (111), annular mounting groove (112) and follow link hole (113) of annular mounting groove (112) equipartition are seted up at the both ends of first pipe box (11); The composite layer (12) comprises a concrete pouring layer (121) filled between the first pipe sleeve (11) and the second pipe sleeve (13), a hollow pipe (122) is embedded in the concrete pouring layer (121), a prestress steel strand (123) is arranged in the hollow pipe (122) in a penetrating manner, and two ends of the prestress steel strand (123) are connected with the first pipe sleeve (11); The second pipe sleeve (13) is connected with annular reinforcing ribs (20) through elastic connecting arms (21), the annular reinforcing ribs (20) are distributed along the axial direction of the pipe body main body (10) at intervals, tension rods (30) are connected between the adjacent annular reinforcing ribs (20), and self-tightening anchors (40) are arranged between the annular reinforcing ribs (20) and the prestress steel strands (123).
  2. 2. The compression-resistant and deformation-resistant municipal engineering tool Cheng Gangguan according to claim 1, wherein limiting rings (124) are fixedly installed inside two ends of the hollow pipe (122), two ends of the prestressed steel strand (123) penetrate through the limiting rings (124) and are fixedly connected with anchor plates (125), and first springs (126) are fixedly connected between the anchor plates (125) and the limiting rings (124).
  3. 3. The compressive and deformation resistant municipal engineering tool Cheng Gangguan according to claim 1, wherein sealing gaskets (114) are installed in the annular mounting grooves (112) at both ends.
  4. 4. The compressive deformation resistant municipal engineering tool Cheng Gangguan according to claim 1, wherein the self-tightening anchor (40) comprises a compression bar (41) slidably connected to the second pipe sleeve (13), and a locking block (42) fixedly mounted on the prestressed steel strand (123), wherein the compression bar (41) and the locking block (42) have contact inclined surfaces.
  5. 5. The compression-resistant deformation-resistant municipal engineering tool Cheng Gangguan as claimed in claim 4, wherein the self-tightening anchor (40) further comprises a floating plate (43), a secondary groove (115) is formed in the bottom surface of the groove of the annular mounting groove (112), the floating plate (43) is slidably connected in the secondary groove (115), an anchor hole (116) is formed in the bottom surface of the groove of the secondary groove (115), a dynamic rod (44) is fixedly mounted on the floating plate (43), the dynamic rod (44) penetrates through the anchor hole (116) and is located in the hollow tube (122), a positioning pin (431) is fixedly mounted on the floating plate (43), and a positioning groove (117) matched with the positioning pin (431) is formed in the inner side wall of the groove of the secondary groove (115).
  6. 6. The compression-resistant and deformation-resistant municipal engineering tool Cheng Gangguan according to claim 5, wherein the dynamic rod (44) is sleeved with a second spring (45), and two ends of the second spring (45) are respectively fixed with the step surface of the hollow tube (122) and the step surface of the dynamic rod (44).
  7. 7. The compressive and deformation resistant municipal engineering tool Cheng Gangguan according to claim 1, wherein the outer wall of the second pipe sleeve (13) is provided with a corrugated structure, the annular reinforcing ribs (20) are elastically suspended at the wave troughs of the corrugated structure through elastic connecting arms (21), and the annular reinforcing ribs (20) are in contact with the self-tightening anchors (40).
  8. 8. The compressive and deformation resistant municipal engineering tool Cheng Gangguan as claimed in claim 7, wherein the annular reinforcing ribs (20) are of split structure and are formed by arranging at least two arc-shaped reinforcing sections (22) at intervals from head to tail, and a telescopic gap is reserved between adjacent arc-shaped reinforcing sections (22).
  9. 9. The compressive and deformation resistant municipal engineering tool Cheng Gangguan according to claim 8, wherein the arc-shaped reinforcing section (22) is of a hollow structure, magnetorheological fluid is filled in the arc-shaped reinforcing section, electromagnetic coils (23) are wound on the outer wall of the arc-shaped reinforcing section (22), and adjacent electromagnetic coils (23) are connected in series through flexible wires with redundant lengths reserved.
  10. 10. The compressive and deformation resistant municipal engineering tool Cheng Gangguan according to claim 1, wherein the outer surface of the second pipe sleeve (13) is coated with a wear resistant coating and the inner wall of the first pipe sleeve (11) is coated with a corrosion resistant layer.

Description

Compression-resistant deformation-resistant municipal engineering tool Cheng Gangguan Technical Field The invention relates to the technical field of steel pipes, in particular to a compressive deformation-resistant municipal engineering tool Cheng Gangguan. Background In municipal engineering construction, engineering steel pipes are used as core members in the key fields of water supply and drainage, gas transportation, heating pipelines, bridge supporting structures and the like, and the performance of the engineering steel pipes is directly related to the safety and the service life of urban infrastructure. With the acceleration of the urban process and the intensive development of underground space, municipal engineering steel pipes face multiple challenges of increasingly complex service environments, such as deep soil burying pressure, heavy traffic dynamic load, uneven settlement of foundations, groundwater corrosion and the like. Under the action of long-term external static load (such as earth covering pressure) and dynamic load (such as vehicle passing), the traditional thin-wall steel pipe is easy to generate elliptical deformation or local buckling, so that the effective area of the section of the pipeline is reduced, the fluid conveying efficiency is reduced, and even structural failure is caused when serious. In addition, when an earthquake or foundation settlement is encountered, the flexibility and rigidity of the pipeline are difficult to balance, and plastic deformation is extremely easy to generate. Disclosure of Invention The invention aims to provide an engineering steel pipe for municipal engineering, which is compression-resistant and deformation-resistant, and aims to solve the problems that the thin-wall steel pipe provided in the background technology is easy to generate elliptical deformation or local buckling, so that the effective area of the section of a pipeline is reduced, the fluid conveying efficiency is reduced, and even structural failure is caused when the fluid conveying efficiency is serious. In order to achieve the above purpose, the present invention provides the following technical solutions: The utility model provides an engineering steel pipe for municipal works of resistance to compression and deformation, includes the body main part, the body main part includes first pipe box, composite bed and second pipe box from inside to outside in proper order, the both ends of first pipe box are the link, annular mounting groove and along the connecting hole of annular mounting groove equipartition are seted up at the both ends of first pipe box, the composite bed including pack in concrete placement layer between first pipe box and the second pipe box, pre-buried hollow tube has been worn to be equipped with in the hollow tube, the both ends of prestressing force steel strand wires with first pipe box is connected, be connected with annular strengthening rib through the elastic connection arm on the second pipe box, annular strengthening rib is followed body main part axial interval distribution, be connected with the pulling force pole between the adjacent annular strengthening rib, be provided with self-tightening anchor between annular strengthening rib and the prestressing force steel strand wires. Preferably, limiting rings are fixedly installed inside two ends of the hollow pipe, two ends of the prestress steel strand penetrate through the limiting rings and are fixedly connected with anchor plates, and a first spring is fixedly connected between each anchor plate and each limiting ring. Preferably, sealing gaskets are arranged in the annular mounting grooves at two ends. Preferably, the self-tightening anchor comprises a compression bar which is connected to the second pipe sleeve in a sliding manner, and a locking block which is fixedly arranged on the prestress steel wire, wherein the compression bar and the locking block are provided with contact inclined planes. Preferably, the self-tightening anchorage device further comprises a floating plate, a second-stage groove is formed in the bottom surface of the groove of the annular mounting groove, the floating plate is slidably connected in the second-stage groove, an anchor hole is formed in the bottom surface of the second-stage groove, a dynamic rod is fixedly mounted on the floating plate and penetrates through the anchor hole and is located in the hollow tube, a positioning pin is fixedly mounted on the floating plate, and a positioning groove matched with the positioning pin is formed in the inner side wall of the second-stage groove. Preferably, the dynamic rod is sleeved with a second spring, and two ends of the second spring are respectively fixed with the step surface of the hollow tube and the step surface of the dynamic rod. Preferably, the outer wall of the second pipe sleeve is provided with a corrugated structure, the annular reinforcing ribs are elastically suspended at the trough of the corrugated