CN210086240U - PHC tubular pile convenient to long survey of worker's back stake - Google Patents
PHC tubular pile convenient to long survey of worker's back stake Download PDFInfo
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- CN210086240U CN210086240U CN201920616438.0U CN201920616438U CN210086240U CN 210086240 U CN210086240 U CN 210086240U CN 201920616438 U CN201920616438 U CN 201920616438U CN 210086240 U CN210086240 U CN 210086240U
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- pile
- tubular pile
- insulating
- longitudinal
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Abstract
The utility model discloses a PHC tubular pile convenient to pile length survey behind worker relates to the tubular pile technique, this PHC tubular pile includes insulating longitudinal reinforcement, ordinary longitudinal reinforcement, stirrup, strengthening rib, C type insulating reinforcement, pile body concrete, end board, pile point, wire and direct current resistance measuring apparatu, connects gradually a plurality of sections of unit tubular piles in the upper portion of first section embedded tubular pile and constitutes a whole, and direct current resistance measuring apparatu passes through the resistance return circuit of wire connection test left root insulating longitudinal reinforcement, C type insulating reinforcement and right root insulating longitudinal reinforcement the test method includes the preparation of ① PHC tubular pile, the construction of ② PHC tubular pile, the pile length of ③ PHC tubular pile surveys the utility model discloses test tubular pile longitudinal reinforcement resistance with the help of physics electricity principle, obtain pile body depth of penetrating indirectly, tubular pile design and test method standard, maneuverability is strong, can satisfy the pile length measurement demand behind the worker of tubular pile construction scene.
Description
Technical Field
The utility model relates to a tubular pile technique especially relates to a PHC tubular pile convenient to long survey of worker's back stake.
Background
The PHC tubular pile (high-strength prestressed tubular pile) has the advantages of high strength, good driving resistance, strong penetrating power, high construction mechanization degree, high construction speed, small influence on environment and the like, and is particularly suitable for engineering construction with short construction period and high environmental protection requirement. In addition, the PHC tubular pile has the advantages of industrial production, controllable quality, and fully guaranteed pile body bearing capacity, bending resistance and poking resistance after pile sinking compared with pile types such as cast-in-place piles. Therefore, the engineering application of the PHC tubular pile is rapidly developed and widely applied to the projects such as building, airports, docks, dams, roads and the like.
After the PHC tubular pile is constructed, due to the soil squeezing effect of the pile body, the wave impedance of the bottom of the tubular pile is similar to that of a soil body, the reflection of the pile bottom with small strain waveforms is not obvious, meanwhile, the reflection of the pile splicing welding node to stress waves is obvious, and the detection of the depth of the PHC tubular pile in the soil after construction is difficult.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an aim at just solving the long problem that detects the difficulty of stake behind the work of PHC pipe stake, combine tubular pile design and construction, pile foundation to detect and physics electricity technique, provide a PHC tubular pile and test method convenient to long survey of stake behind the work, can accurately obtain the stake length behind the work of PHC pipe stake.
The purpose of the utility model is realized like this:
PHC tubular pile convenient for measuring post-construction pile length
The PHC tubular pile comprises insulating longitudinal bars, common longitudinal bars, stirrups, reinforcing ribs, C-shaped insulating bars, pile body concrete, end plates, pile tips, leads and a direct current resistance measuring instrument;
the position and connection relation is as follows:
each section of unit tubular pile comprises a reinforcement cage framework of the tubular pile formed by a left insulation longitudinal bar, a right insulation longitudinal bar, a common longitudinal bar, a stirrup and a reinforcing bar, a main body of the tubular pile is formed by filled pile body concrete, and end plates are arranged at the upper end part and the lower end part of the tubular pile; c-shaped insulating steel bars are additionally arranged at the bottom of the first section of soil-entering tubular pile reinforcement cage;
the bottom of the first section of the soil-entering tubular pile is connected with a pile tip;
the upper part of the first section of the soil-entering tubular pile is sequentially connected with a plurality of sections of unit tubular piles to form a whole, and the direct current resistance measuring instrument is connected with and tests a resistance loop of the left insulating longitudinal rib, the C-shaped insulating reinforcing steel bar and the right insulating longitudinal rib through a lead.
Second, the testing method (method for short) of PHC tubular pile convenient for post-construction pile length determination
The method comprises the following steps:
① PHC pipe pile manufacturing method
When the tubular pile reinforcement cage is manufactured, epoxy resin is uniformly coated on the surface of an insulating longitudinal bar, an insulating sleeve is arranged at the intersection of the insulating longitudinal bar, a stirrup and a reinforcing rib to finish the manufacture of the insulating longitudinal bar, and a C-shaped insulating steel bar is additionally arranged at the bottom of a first buried tubular pile on the basis;
the left and right insulating longitudinal bars of the pile body are symmetrically laid along the axis of the pile body, a groove is reserved at the exposed position of the pile end of the insulating longitudinal bar, and the filled pile body concrete forms a main body of the pipe pile;
construction of ② PHC pipe pile
Welding a pile tip at the pile bottom of the first buried pipe pile, and connecting the pile tip with an end plate at the pile bottom through a fully welded pile tip welding seam;
when pile splicing is carried out, firstly, welding the insulated longitudinal bars of the upper pile and the lower pile, then filling the grooves at the exposed ends of the insulated longitudinal bars with hot melt adhesive to ensure that the insulated longitudinal bars are insulated at the welding positions, and finally, firmly connecting the end plates of the upper pile and the lower pile through fully welded pile splicing welding seams;
determination of pile length of ③ PHC tubular pile
After the construction of the tubular pile is finished, the insulating longitudinal bar and the C-shaped insulating steel bar at the bottom of the first tubular pile form a U-shaped communication circuit, the resistance value of the insulating steel bar of the pile body can be accurately measured by using a direct-current resistance measuring instrument and a lead, and the penetration depth of the tubular pile can be obtained through conversion according to the resistance of the insulating steel bar in unit length and the length of the C-shaped insulating steel bar.
The utility model has the advantages of it is following and positive effect:
① testing the resistance of the longitudinal steel bar of the pipe pile by means of the physical and electrical principle to indirectly obtain the penetration depth of the pile body;
② epoxy resin is uniformly coated on the surface of the insulated longitudinal bar, and an insulating sleeve is arranged at the intersection of the insulated longitudinal bar, the stirrup and the reinforcing rib, so that the insulation reliability of the longitudinal bar is ensured;
③ C-shaped insulating steel bars are additionally arranged at the bottom of the first buried pipe pile, and two ends of the C-shaped insulating steel bars are respectively connected with two longitudinal bars to ensure that the U-shaped electrical loops of the pile body insulating steel bars are communicated;
④ round grooves are arranged at the exposed ends of the pile ends of the insulated longitudinal bars, so that hot melt adhesive filling and insulation can be conveniently carried out after the insulated longitudinal bars are welded;
⑤ the design and test method of the tubular pile has uniform standard and strong operability, and can meet the post-construction pile length measurement requirement of the tubular pile construction site.
Drawings
Fig. 1 is a schematic structural view of a PHC pile;
fig. 2 is a structural schematic diagram of a reinforcement cage of the PHC pile;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
FIG. 4 is a schematic view of the post-construction shaft of the PHC pile;
FIG. 5 is a schematic view of the connection of C-shaped insulating steel bars in a PHC tubular pile at the bottom of a first pile;
fig. 6 is a detailed schematic diagram of the insulated longitudinal ribs at the end of the PHC pile;
fig. 7 is a schematic diagram of an insulated longitudinal rib welded joint in a PHC pile.
In the figure:
1-insulating the longitudinal ribs,
1-an epoxy resin,
1-2-an insulating sleeve pipe,
1-3-a groove, wherein,
1-4-hot-melt adhesive,
1-5 insulating longitudinal bar welding seams;
2-common longitudinal steel bars;
3, hooping;
4, reinforcing ribs;
5-C type insulating steel bars;
6, pile body concrete;
7-a head plate at the end,
7-1-pile extension welding seam;
8-the point of the pile,
8-1-pile tip weld;
9-a wire;
10-direct current resistance measuring instrument.
Detailed Description
The following detailed description is made with reference to the accompanying drawings and implementation flows:
PHC tubular pile
1. General of
As shown in fig. 1, the PHC tubular pile comprises an insulating longitudinal bar 1, a common longitudinal bar 2, a stirrup 3, a reinforcing bar 4, a C-shaped insulating bar 5, pile body concrete 6, an end plate 7, a pile tip 8, a lead 9 and a direct current resistance measuring instrument 10;
the position and connection relation is as follows:
each section of unit tubular pile comprises a left insulating longitudinal bar 1, a right insulating longitudinal bar 1, a common longitudinal bar 2, a stirrup 3 and a reinforcing bar 4 to form a reinforcement cage framework of the tubular pile, filled pile body concrete 6 forms a main body of the tubular pile, end plates 7 are arranged at the upper end part and the lower end part of the tubular pile, and a C-shaped insulating bar 5 is additionally arranged at the bottom of a reinforcement cage of the first section of soil-entering tubular pile;
the bottom of the first section of the soil-entering tubular pile is connected with a pile tip 8;
a plurality of sections of unit tubular piles are sequentially connected to the upper portion of the first section of the soil-entering tubular pile to form a whole, and a direct current resistance measuring instrument 10 is connected with and measures a resistance loop of the left insulating longitudinal rib 1, the C-shaped insulating reinforcing steel bar 5 and the right insulating longitudinal rib 1 through a lead 9.
2. Functional component
As shown in fig. 1, 2, 3, 4, 5, 6, 7:
1) insulating longitudinal bar 1
The insulating longitudinal bars 1 are hot-rolled ribbed steel bars, the diameter and the type of the insulating longitudinal bars are the same as those of common longitudinal steel bars 2, epoxy resin 1-1 is uniformly coated on the surfaces of the insulating longitudinal bars for insulation treatment, insulating sleeves 1-2 are installed at the junctions of the insulating longitudinal bars 3 and reinforcing ribs 4 to strengthen insulation protection, two insulating longitudinal bars 1 are arranged in each section of PHC tubular pile, the two insulating longitudinal bars 1 are symmetrically laid along the axis of the pile body, and circular grooves 1-3 are reserved at the exposed ends of the pile ends of the insulating longitudinal bars 1.
(1) Epoxy resin 1-1
The epoxy resin 1-1 is hot-melt bisphenol A epoxy resin, has the advantages of high bonding strength, small curing shrinkage rate, excellent electrical insulation and the like, and the epoxy resin 1-1 is uniformly coated on the surface of the insulating longitudinal rib 1.
(2) Insulating sleeve 1-2
The insulating sleeve 1-2 is a corrugated pipe or other insulating material sleeve with the inner diameter matched with the insulating longitudinal rib 1, and the insulating sleeve 1-2 is arranged at the intersection of the insulating longitudinal rib 1, the stirrup 3 and the reinforcing rib 4, so that the epoxy resin 1-1 coating on the surface of the insulating longitudinal rib 1 can be prevented from being damaged.
(3) Grooves 1-3
The grooves 1-3 are arranged at the exposed ends of the insulating longitudinal ribs 1 at the end parts of the tubular pile and are circular, the insulating longitudinal ribs 1 are arranged at the centers of the grooves 1-3, and hot melt adhesive 1-4 is filled in the grooves 1-3 to keep the insulating longitudinal ribs 1 insulated after the insulating longitudinal ribs 1 are welded during pile splicing.
(4) 1-4 parts of hot melt adhesive
The hot melt adhesive 1-4 is a high-viscosity hot melt adhesive, and is used for filling the grooves 1-3 and isolating the insulating longitudinal ribs 1 after the insulating longitudinal ribs 1 are welded, so that the insulating longitudinal ribs 1 are kept insulated at the welding positions.
(5) Insulating longitudinal rib welding seam 1-5
And the insulating longitudinal rib welding seams 1-5 are positioned between the insulating longitudinal ribs 1 of the upper pile and the lower pile and used for ensuring the communication of the insulating longitudinal ribs 1 between the piles, before the insulating longitudinal ribs 1 are welded, firstly removing the epoxy resin 1-1 on the end sections of the insulating longitudinal ribs 1, and then completing the welding construction of the insulating longitudinal rib welding seams 1-5 by adopting a submerged arc welding or gas shielded welding mode.
2) Plain longitudinal steel bar 2
The common longitudinal steel bar 2 is hot-rolled ribbed steel bar, the diameter, the type and the quantity are determined by the design calculation of the pile body, and the common longitudinal steel bar 2 and the insulated longitudinal steel bar 1 form the main steel bar of the tubular pile steel reinforcement cage and are uniformly distributed along the longitudinal direction.
3) Stirrup 3
4) Reinforcing ribs 4
The strengthening rib 4 is plain steel muscle, and diameter, model and interval are calculated through the design and are confirmed, and strengthening rib 4 all welds firmly with the handing-over point department of ordinary longitudinal reinforcement 2, and strengthening rib 4 adopts the iron wire ligature in handing-over point department with insulating vertical reinforcement 1.
5) C-shaped insulating steel bar 5
The C-shaped insulating steel bar 5 is a hot-rolled ribbed steel bar and is only arranged at the bottom of the first section of the soil-entering pipe pile, the diameter and the model are the same as those of the insulating longitudinal bar 1 and the common longitudinal steel bar 2, 1-1 of epoxy resin is uniformly coated on the surface of the C-shaped insulating steel bar 5, and two ends of the C-shaped insulating steel bar are welded with the end parts of the 2 insulating longitudinal bars 1.
6) Pile body concrete 6
7) End plate 7
The end plate 7 is a circular ring-shaped steel plate, the size of the end plate is matched with that of a pipe pile, the thickness and the steel specification meet the specification and the use requirement, prestress tensioning holes are reserved in the corresponding positions of the ends of the common longitudinal steel bars 2 of the end plate 7, and holes with the same outer diameter as that of the grooves 1-3 are reserved in the corresponding positions of the ends of the insulated longitudinal steel bars 1.
(1) Pile-connecting weld seam 7-1
The pile connecting welding seam 7-1 is welded in a full-length welding mode and is used for connecting end plates 7 of upper and lower piles, 3 welders perform welding in a direction forming an angle of 120 degrees, and the number of welding layers is not less than 3.
8) Pile tip 8
The pile tip 8 is a steel sharp-bottom cross-shaped pile tip, the pile tip 8 is welded at the bottom of the first section of tubular pile through a pile tip welding seam 8-1, the pile breaking probability can be reduced in the pile sinking process, and the penetration capacity of the tubular pile to a soil layer is improved.
(1) Pile tip weld 8-1
The pile tip welding seam 8-1 is welded in a full welding mode, 3 welders perform welding in a direction forming an angle of 120 degrees, and the number of welding layers is not less than 3.
9) Conducting wire 9
And the lead 9 is used for communicating the insulating longitudinal rib 1 and the direct current resistance measuring instrument 10 after the pile sinking of the tubular pile is finished, and testing the resistance value of the U-shaped loop of the pile body.
10) Direct current resistance measuring instrument 10
The direct current resistance measuring instrument 10 is used for testing the resistance value of a U-shaped loop of the pile body after the pile sinking of the tubular pile.
3. Mechanism of operation
The PHC tubular pile comprises an insulating longitudinal bar 1, a common longitudinal bar 2, a stirrup 3, a reinforcing rib 4, a C-shaped insulating bar 5, pile body concrete 6, an end plate 7, a pile tip 8, an insulating longitudinal bar lead 9 and a direct current resistance measuring instrument 10. Epoxy resin 1-1 is sprayed on the surface of the insulating longitudinal bar 1; at the intersection of the stirrup 3 and the reinforcing rib 4, the insulating longitudinal rib 1 is provided with an insulating sleeve 1-2; the end part of the insulating longitudinal rib 1 is provided with grooves 1-3.
When the tubular pile is constructed, the first root enters the pile bottom of the soil tubular pile, and the pile tip 8 is welded through a pile tip welding seam 8-1; when pile splicing welding is carried out, firstly, insulating longitudinal ribs 1 of upper and lower piles are welded through insulating longitudinal rib welding seams 1-5, then hot melt adhesives 1-4 are adopted to fill grooves 1-3 at exposed positions of the insulating longitudinal ribs 1, so that the insulating longitudinal ribs 1 are kept insulated at welding positions, and finally, end plates 7 of the upper and lower piles are welded firmly through pile splicing welding seams 7-1 in a full welding mode; after the construction of the tubular pile is finished, the insulating longitudinal bar 1 and the C-shaped insulating steel bar 5 at the bottom of the first tubular pile form a U-shaped communication circuit, the resistance value of the insulating steel bar of the pile body can be accurately measured by using the direct current resistance measuring instrument 10, and the penetration depth of the tubular pile can be accurately measured according to the resistance of the insulating steel bar in unit length and by considering the length of the C-shaped insulating steel bar 5.
Claims (1)
1. The utility model provides a PHC tubular pile convenient to long survey of worker's back stake which characterized in that:
the device comprises insulating longitudinal bars (1), common longitudinal bars (2), stirrups (3), reinforcing ribs (4), C-shaped insulating bars (5), pile body concrete (6), end plates (7), pile tips (8), leads (9) and a direct current resistance measuring instrument (10);
the position and connection relation is as follows:
each section of unit tubular pile comprises a left insulating longitudinal bar (1), a right insulating longitudinal bar (1), a common longitudinal bar (2), a stirrup (3) and a reinforcing bar (4) to form a reinforcement cage framework of the tubular pile, filled pile body concrete (6) forms a main body of the tubular pile, end plates (7) are arranged at the upper end part and the lower end part of the tubular pile, and a C-shaped insulating bar (5) is additionally arranged at the bottom of the first section of the soil-entering tubular pile reinforcement cage;
the bottom of the first section of the soil-entering tubular pile is connected with a pile tip (8);
a plurality of sections of unit tubular piles are sequentially connected to the upper portion of the first section of the buried tubular pile to form a whole, and a direct current resistance measuring instrument (10) is connected with a resistance loop for testing the left insulating longitudinal rib (1), the C-shaped insulating steel bar (5) and the right insulating longitudinal rib (1) through a lead (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920616438.0U CN210086240U (en) | 2019-04-30 | 2019-04-30 | PHC tubular pile convenient to long survey of worker's back stake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920616438.0U CN210086240U (en) | 2019-04-30 | 2019-04-30 | PHC tubular pile convenient to long survey of worker's back stake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210086240U true CN210086240U (en) | 2020-02-18 |
Family
ID=69476711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920616438.0U Withdrawn - After Issue CN210086240U (en) | 2019-04-30 | 2019-04-30 | PHC tubular pile convenient to long survey of worker's back stake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210086240U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110029668A (en) * | 2019-04-30 | 2019-07-19 | 中国科学院武汉岩土力学研究所 | Convenient for the PHC tubular pole and its test method of the long measurement of stake after work |
-
2019
- 2019-04-30 CN CN201920616438.0U patent/CN210086240U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110029668A (en) * | 2019-04-30 | 2019-07-19 | 中国科学院武汉岩土力学研究所 | Convenient for the PHC tubular pole and its test method of the long measurement of stake after work |
| CN110029668B (en) * | 2019-04-30 | 2022-07-26 | 中国科学院武汉岩土力学研究所 | PHC pipe pile convenient for measuring post-construction pile length and testing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20200218 Effective date of abandoning: 20211228 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20200218 Effective date of abandoning: 20211228 |