CN111267207B - Device for manufacturing Prestressed Concrete Cylinder Pipe (PCCP) broken wire detection test piece section - Google Patents
Device for manufacturing Prestressed Concrete Cylinder Pipe (PCCP) broken wire detection test piece section Download PDFInfo
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- CN111267207B CN111267207B CN202010113745.4A CN202010113745A CN111267207B CN 111267207 B CN111267207 B CN 111267207B CN 202010113745 A CN202010113745 A CN 202010113745A CN 111267207 B CN111267207 B CN 111267207B
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- pccp
- test piece
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- 238000012360 testing method Methods 0.000 title claims abstract description 34
- 239000011513 prestressed concrete Substances 0.000 title claims abstract description 9
- 238000001514 detection method Methods 0.000 title abstract description 14
- 238000004519 manufacturing process Methods 0.000 title abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 140
- 239000010959 steel Substances 0.000 claims abstract description 140
- 239000004567 concrete Substances 0.000 claims abstract description 28
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 9
- 238000013461 design Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000009415 formwork Methods 0.000 description 11
- 239000010410 layer Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 230000004075 alteration Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/24—Unitary mould structures with a plurality of moulding spaces, e.g. moulds divided into multiple moulding spaces by integratable partitions, mould part structures providing a number of moulding spaces in mutual co-operation
- B28B7/241—Detachable assemblies of mould parts providing only in mutual co-operation a number of complete moulding spaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/0002—Auxiliary parts or elements of the mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/0002—Auxiliary parts or elements of the mould
- B28B7/0014—Fastening means for mould parts, e.g. for attaching mould walls on mould tables; Mould clamps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/0094—Moulds for concrete test samples
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Analytical Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
- Moulds, Cores, Or Mandrels (AREA)
Abstract
The invention discloses a device for manufacturing a Prestressed Concrete Cylinder Pipe (PCCP) broken wire detection test piece section, which comprises a steel outer template, a steel side template, a connecting bolt, a steel inner template and a steel sheet. The two steel outer templates and the two steel side templates are connected into a frame body, and the inside of the frame body is divided into three spaces by the steel inner templates and the steel sheets. When the PCCP test piece section is manufactured, the outer tube core concrete and the inner tube core concrete are poured at the same time, the steel inner template is removed, a plurality of broken prestressed steel wires and intact prestressed steel wires are adhered to the outer tube core concrete, a mortar protection layer is poured, and finally the PCCP test piece section is obtained through demoulding. The size of the device can be flexibly customized, and PCCP test sections with different sizes can be manufactured; the device can be poured on the test site, and can effectively save test cost and time.
Description
Technical Field
The invention relates to a device for manufacturing a Prestressed Concrete Cylinder Pipe (PCCP) broken wire detection test piece section.
Background
At present, PCCP tube explosion frequently occurs worldwide, and the most important reason for the occurrence of the PCCP tube explosion is insufficient bearing capacity caused by the fact that the number of broken prestressed steel wires is accumulated to a certain degree. The detection technology for PCCP prestressed steel wire fracture has become a popular research direction for many researchers. In order to verify the effectiveness of the broken wire detection technology, a large number of tests are required to be completed before the technology is popularized and applied. One of the main difficulties in test implementation is that PCCP finished products, especially large-caliber PCCP finished products, have higher purchase cost, inconvenient transportation and difficult hoisting, and result in longer test period. Therefore, if the test piece section can be customized according to the actual inner diameter PCCP and the prestressed steel wire fracture detection test under the pipe diameter is completed, the research and development of the detection technology and equipment are greatly promoted.
Many studies on PCCP broken wire detection technology and equipment are performed at the site of PCCP embedding or at the site of PCCP production, which have an influence on the normal operation of other works. However, no device for producing a PCCP test piece segment for wire breakage detection exists. For this requirement, there is a need to design a device that can meet the size requirements of PCCP of various calibers and can achieve the pouring of such composite material pipes of PCCP.
Disclosure of Invention
The invention aims to provide a device for manufacturing a Prestressed Concrete Cylinder Pipe (PCCP) broken wire detection test piece section.
The technical scheme adopted for achieving the purpose of the invention is that the device for manufacturing the Prestressed Concrete Cylinder Pipe (PCCP) broken wire detection test piece section comprises a steel outer template, a steel side template, connecting bolts, a steel inner template and a steel sheet.
The steel outer templates are arch plates which are vertically arranged, the two steel outer templates are arranged at intervals, and the two straight edges of the steel outer templates are perpendicular to the horizontal plane. The steel side templates are rectangular plates which are vertically arranged, and the two steel side templates are connected to the two steel outer templates through a plurality of connecting bolts to form a frame body with an open upper end and a hollow lower end.
Every interval has draw-in groove I and draw-in groove II on the inner wall of steel side form board, and draw-in groove I and draw-in groove II all vertically set up. The clamping grooves I of the two steel side templates are on the same vertical plane, and the clamping grooves II of the two steel side templates are on the same vertical plane.
The steel inner die plate and the steel sheet are arched, two vertical edges of the steel inner die plate are respectively inserted into clamping grooves I of the two steel side die plates, and two vertical edges of the steel sheet are respectively inserted into clamping grooves II of the two steel side die plates.
The upper edge of the steel inner template is connected with a handle.
When a test piece section is manufactured, simultaneously pouring outer core concrete between the steel inner template and the steel sheet and inner core concrete between the steel sheet and the steel outer template, and sticking a plurality of fracture prestressed steel wires and intact prestressed steel wires on the side wall of the outer core concrete after the outer core concrete and the inner core concrete are formed; and pouring a mortar protection layer between the steel inner template and the steel outer template, and finally removing the die to form a test piece section.
Further, every vertical edge of steel external form all is provided with a plurality of bolt holes I, and the both ends of steel sideform all are provided with a plurality of bolt holes II that run through its face.
The bolt hole I and the bolt hole II are provided with internal threads, and a plurality of connecting bolts are screwed into the bolt hole II and the bolt hole I.
The invention has the technical effects that the sizes of the steel outer template and the steel side template of the device can be flexibly adjusted and customized, and PCCP test sections with proper sizes can be manufactured according to the needs, so that the device has good economical efficiency and practicality; the device can perform pouring of the tube core concrete and the mortar protective layer on a test site to manufacture a test section, and can effectively save test cost and time; the device has the advantages of simple structure, convenient operation and wide application range.
Drawings
FIG. 1 is a schematic diagram of an apparatus of the present invention;
FIG. 2 is a top view of a PCCP test piece casting when the apparatus of the present invention is in use;
FIG. 3 is a schematic view of a steel sideform;
FIG. 4 is a schematic view of a steel outer form;
FIG. 5 is a schematic view of the installation of a broken pre-stressed steel wire with an intact pre-stressed steel wire;
Fig. 6 is a schematic illustration of a PCCP test piece segment after removal of the form.
In the figure: the steel outer formwork 1, the bolt holes I101, the steel side formwork 2, the clamping groove I201, the clamping groove II 202, the bolt holes II 203, the connecting bolts 3, the steel inner formwork 4, the lifting handle 401, the steel sheet 5, the outer pipe core concrete 6, the inner pipe core concrete 7, the fracture prestress steel wire 8, the perfect prestress steel wire 9 and the mortar protection layer 10.
Detailed Description
The present invention is further described below with reference to examples, but it should not be construed that the scope of the above subject matter of the present invention is limited to the following examples. Various substitutions and alterations are made according to the ordinary skill and familiar means of the art without departing from the technical spirit of the invention, and all such substitutions and alterations are intended to be included in the scope of the invention.
Example 1:
the embodiment discloses a device for manufacturing a Prestressed Concrete Cylinder Pipe (PCCP) broken wire detection test piece section, which comprises a steel outer template 1, a steel side template 2, connecting bolts 3, a steel inner template 4 and a steel sheet 5.
Referring to fig. 1, the steel outer templates 1 are arch plates which are vertically arranged, the two steel outer templates 1 are arranged at intervals, and two straight edges of the steel outer templates 1 are perpendicular to the horizontal plane. The steel side templates 2 are rectangular plates which are vertically arranged, and the two steel side templates 2 are connected to the two steel outer templates 1 through a plurality of connecting bolts 3 to form a frame body with an open upper end and a hollow lower end.
Referring to fig. 4, each vertical edge of the steel outer formwork 1 is provided with a plurality of bolt holes i 101, and referring to fig. 3, both ends of the steel sideform 2 are provided with a plurality of bolt holes ii 203 penetrating the plate surface thereof.
The bolt hole I101 and the bolt hole II 203 are respectively provided with internal threads, and a plurality of connecting bolts 3 are screwed into the bolt hole II 203 and the bolt hole I101. The connecting bolt 3 is convenient to install and disassemble, so that the die assembly and the die stripping are convenient.
Referring to fig. 3, a clamping groove i 201 and a clamping groove ii 202 are arranged on the inner wall of each steel side template 2 at intervals, the clamping grooves i 201 and the clamping grooves ii 202 are all vertically arranged, and the distance between the clamping grooves i 201 and the clamping grooves ii 202 is adjusted according to the thickness requirements of the outer core concrete 6, the inner core concrete 7 and the mortar protection layer 10. The clamping grooves I201 of the two steel side templates 2 are on the same vertical plane, and the clamping grooves II 202 of the two steel side templates 2 are on the same vertical plane.
Referring to fig. 1 or 2, the steel inner die plate 4 and the steel sheet 5 are arched, two vertical edges of the steel inner die plate 4 are respectively inserted into the clamping grooves i 201 of the two steel side die plates 2, and two vertical edges of the steel sheet 5 are respectively inserted into the clamping grooves ii 202 of the two steel side die plates 2. The steel inner template 4, the steel sheet 5 and the two steel outer templates 1 are bent towards the same side. The steel inner formwork 4 can prevent the outer core concrete 6 from occupying the space of the mortar protection layer 10 when being poured.
In order to ensure that the steel outer formworks 1 and the steel side formworks 2 have enough rigidity to resist lateral external pressure generated by poured concrete, the design thickness of the steel outer formworks 1 and the steel side formworks 2 is 1cm, and the thickness of the steel inner formworks 4 and the steel sheets 5 is 2mm.
The upper edge of the steel inner form 4 described with reference to fig. 1 is connected to a handle 401.
By controlling the length, height, arch radius of the steel outer form 1 and the length of the steel sideform 2, a PCCP test section of suitable size can be manufactured according to the present apparatus.
The application method of the device of the embodiment comprises the following steps:
1) And placing the device for manufacturing the Prestressed Concrete Cylinder Pipe (PCCP) broken wire detection test piece section on a wooden bottom plate. To meet the stiffness requirement, the wood floor should be greater than 1.5cm thick.
2) And the inner side of the steel outer template 1, the inner side of the steel side template 2, the two sides of the steel inner template 4 and the wooden bottom plate are coated with release agents, so that the clamping groove I201 and the clamping groove II 202 are ensured to be free of sundries.
3) And simultaneously pouring the outer core concrete 6 between the steel inner template 4 and the steel sheet 5 and the inner core concrete 7 between the steel sheet 5 and the steel outer template 1.
4) After the outer core concrete 6 and the inner core concrete 7 are cured for 18 to 24 hours, the steel inner formwork 4 is pulled out through the handles 401.
5) And a plurality of fracture prestressed steel wires 8 and intact prestressed steel wires 9 are adhered to the side wall of the outer core concrete 6 by using an epoxy-based cementing material. Referring to fig. 5, a plurality of breaking prestressed wires 8 and intact prestressed wires 9 are horizontally arranged, and the breaking prestressed wires 8 and the intact prestressed wires 9 are longitudinally equally spaced.
6) And pouring a mortar protection layer 10 between the steel inner template 4 and the steel outer template 1, and curing.
7) After the strength of the outer core concrete 6, the strength of the inner core concrete 7 and the strength of the mortar protection layer 10 reach the standard, the steel outer template 1, the steel side template 2 and the wood bottom plate are removed to form a PCCP test piece section, and a schematic diagram of the PCCP test piece section after the die is removed is shown in FIG. 6.
Claims (2)
1. A device for making prestressing force steel cylinder concrete pipe (PCCP) broken wire detects test piece section, its characterized in that: comprises a steel outer template (1), a steel side template (2), connecting bolts (3), a steel inner template (4) and a steel sheet (5);
The steel outer templates (1) are arch plates which are vertically arranged, the two steel outer templates (1) are arranged at intervals, and two straight edges of the steel outer templates (1) are perpendicular to a horizontal plane; the steel side templates (2) are rectangular plates which are vertically arranged, and the two steel side templates (2) are connected to the two steel outer templates (1) through a plurality of connecting bolts (3) to form a frame body with an open upper end and a hollow lower end;
The inner wall of each steel side template (2) is provided with a clamping groove I (201) and a clamping groove II (202) at intervals, and the clamping grooves I (201) and the clamping grooves II (202) are vertically arranged; the clamping grooves I (201) of the two steel side templates (2) are on the same vertical plane, and the clamping grooves II (202) of the two steel side templates (2) are on the same vertical plane;
The steel inner die plate (4) and the steel sheet (5) are arched, two vertical edges of the steel inner die plate (4) are respectively inserted into clamping grooves I (201) of the two steel side die plates (2), and two vertical edges of the steel sheet (5) are respectively inserted into clamping grooves II (202) of the two steel side die plates (2);
the design thickness of the steel outer template (1) and the steel side template (2) is 1cm, and the thickness of the steel inner template (4) and the steel sheet (5) is 2mm;
the upper edge of the steel inner template (4) is connected with a handle (401);
When a test piece section is manufactured, simultaneously pouring outer pipe core concrete (6) between the steel inner template (4) and the steel sheet (5) and inner pipe core concrete (7) between the steel sheet (5) and the steel outer template (1), and sticking a plurality of fracture prestressed steel wires (8) and intact prestressed steel wires (9) on the side wall of the outer pipe core concrete (6) after the outer pipe core concrete (6) and the inner pipe core concrete (7) are formed; and pouring a mortar protection layer (10) between the steel inner template (4) and the steel outer template (1), and finally removing the die to form a test piece section.
2. An apparatus for making Prestressed Concrete Cylinder Pipe (PCCP) wire-break test pieces according to claim 1, wherein: each vertical edge of the steel outer template (1) is provided with a plurality of bolt holes I (101), and both ends of the steel side template (2) are provided with a plurality of bolt holes II (203) penetrating through the surface of the steel side template;
The bolt hole I (101) and the bolt hole II (203) are both provided with internal threads, and a plurality of connecting bolts (3) are screwed into the bolt hole II (203) and the bolt hole I (101).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010113745.4A CN111267207B (en) | 2020-02-24 | 2020-02-24 | Device for manufacturing Prestressed Concrete Cylinder Pipe (PCCP) broken wire detection test piece section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010113745.4A CN111267207B (en) | 2020-02-24 | 2020-02-24 | Device for manufacturing Prestressed Concrete Cylinder Pipe (PCCP) broken wire detection test piece section |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111267207A CN111267207A (en) | 2020-06-12 |
| CN111267207B true CN111267207B (en) | 2024-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010113745.4A Active CN111267207B (en) | 2020-02-24 | 2020-02-24 | Device for manufacturing Prestressed Concrete Cylinder Pipe (PCCP) broken wire detection test piece section |
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| CN115489012A (en) * | 2022-07-05 | 2022-12-20 | 港珠澳大桥管理局 | Preparation tool and method for test block capable of accurately simulating crack defects of bridge |
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2020
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| CN111267207A (en) | 2020-06-12 |
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