CN212077919U - Prestressed pipe pile capable of improving lateral resistance - Google Patents
Prestressed pipe pile capable of improving lateral resistance Download PDFInfo
- Publication number
- CN212077919U CN212077919U CN202020532600.3U CN202020532600U CN212077919U CN 212077919 U CN212077919 U CN 212077919U CN 202020532600 U CN202020532600 U CN 202020532600U CN 212077919 U CN212077919 U CN 212077919U
- Authority
- CN
- China
- Prior art keywords
- pipe
- grouting
- slip casting
- tubular pile
- baffle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
The utility model discloses a prestressed pipe pile capable of improving lateral resistance, belonging to the technical engineering field of pile foundation, comprising a pipe pile main body, a grouting channel, an expansion bag, an overflow valve and an expandable grouting pipe; the overflow valve includes belt, baffle, fixed column, the reservation has the slip casting passageway in the tubular pile main part, installs the overflow valve in the part slip casting passageway, belt one end is glued in the tubular pile main part, and the other end is glued on the baffle, the inflation bag passes through the clamp to be fixed in the tubular pile main part outside, and the inflation bag carries out the slip casting to the inflation bag through expandable slip casting pipe including the slip casting passageway parcel that will have the overflow valve. The utility model discloses in, through reserving the slip casting passageway in the tubular pile main part, install the overflow valve in partial slip casting passageway, be provided with the inflation bag in the slip casting passageway outside, increase the lateral resistance of tubular pile, promoted the whole bearing capacity of tubular pile.
Description
Technical Field
The utility model relates to a pile foundation technical engineering field, in particular to can improve side resistance's prestressed pipe pile.
Background
The pure pile foundation cannot work in a cooperative mode due to the fact that the rigidity strength difference between the pile and the soil is large, and therefore the working performance of the soil is not considered during design. In fact, inside the prestressing force tubular pile disect insertion soil body, the interface frictional resistance of tubular pile and soil body played main effect, the additional stress of the soil body has the gradient change by shallow to dark: the additional stress at the shallow part is large, the additional stress at the deep part is small, and the additional stress of the pile type with larger proportion of the friction force to the total bearing force is more quickly attenuated from top to bottom, namely the stress gradient is larger.
If according to traditional construction mode, directly plant the tubular pile into the soil body, both can not form synergistic action well. For the foundation with larger strength difference, such as the prestressed pipe pile composite foundation, the problem of insufficient bearing capacity of natural foundation soil exists, and the composite foundation method is required to be used for processing. The problem that the actual stress distribution of piles, soil and vertical reinforcements in the foundation is different from a theoretical calculation result exists after the treatment. If the pile type is not adjusted according to the traditional design method, the problems that the bearing capacity of certain key parts is difficult to guarantee and the settlement is too large or uneven exist. Therefore, the utility model provides a can improve the prestressing force tubular pile of side resistance.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned technical problem who exists among the prior art, the utility model provides a can improve the prestressing force tubular pile of side resistance has overcome the not enough of prior art. By reserving a grouting channel on the tubular pile main body, the side resistance of the tubular pile can be increased through later grouting; the expansion bag is arranged on the outer side of the grouting channel, mortar is injected into the expansion bag in the later period according to the position of the weak soil layer to form an annular bulge, and the lower part of the annular bulge is clamped at the joint of the weak soil layer and the hard soil layer, so that the bearing capacity of the tubular pile is improved; by installing the overflow valve in part of the grouting channel, the grout can be ensured to be kept in the expansion bag before initial setting during later-stage grouting.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a prestressed pipe pile capable of improving lateral resistance is characterized by comprising a pipe pile main body, a grouting channel, an expansion bag, an overflow valve and an expandable grouting pipe; the overflow valve includes belt, baffle, fixed column, the reservation has the slip casting passageway in the tubular pile main part, installs the overflow valve in the part slip casting passageway, belt one end is glued in the tubular pile main part, and the other end is glued on the baffle, the inflation bag passes through the clamp to be fixed in the tubular pile main part outside, and the inflation bag carries out the slip casting to the inflation bag through expandable slip casting pipe including the slip casting passageway parcel that will have the overflow valve.
Preferably, the slip casting passageway runs through the tubular pile main part, on tubular pile main part length direction, reserves two slip casting passageways on every cross section, and two slip casting passageways set up two slip casting passageways along central point symmetric distribution in tubular pile main part cross section, and the diameter of slip casting passageway is 2cm ~5cm, on the tubular pile main part length direction, every 0.5m ~2.0 m.
Preferably, the material of belt is rubber, and the width of belt is 1cm ~2cm, is provided with the pretightning force when the belt is connected on tubular pile main part and baffle, and the scope of pretightning force is 20N ~2000N, and baffle and fixed column are steel material, through welded connection between baffle and the fixed column, the thickness of baffle is 0.3cm ~1.5cm, and the baffle is square structure, and the length of side of baffle is 5cm ~10cm, the diameter of fixed column is 0.8~0.9 times of slip casting passageway diameter, and the length of fixed column is 5cm ~10 cm.
Preferably, the material of expansion bag is rubber, and the thickness of expansion bag is 0.5cm ~1.5cm, and the expansion bag is cylindric, and the diameter of expansion bag is 1.1~1.2 times of tubular pile main part diameter.
Preferably, the expandable grouting pipe comprises a grouting pipe, an upper plug, a nozzle and a lower plug, the grouting pipe is a double pipe made of alloy materials, the inner pipe is a grouting pipe, the outer pipe is an air pipe, the upper plug and the lower plug are arranged on the outer pipe, the distance between the upper plug and the lower plug is 0.5-3.0 m, the nozzle is arranged on the grouting pipe between the upper plug and the lower plug, and the nozzle is communicated with the grouting pipe but not communicated with the air pipe.
Preferably, the grip force of the clamp is larger than the grouting pressure.
Preferably, the expansion bag can be fixed at any position outside the tubular pile main body, and particularly, the expansion bag can be fixed at the bottommost part of the tubular pile main body to form a pile bottom expansion head.
The utility model discloses the beneficial technological effect who brings:
(1) by reserving a grouting channel on the tubular pile main body, the side resistance of the tubular pile can be increased through later grouting; (2) the expansion bag is arranged on the outer side of the grouting channel, mortar is injected into the expansion bag in the later period according to the position of the weak soil layer to form an annular bulge, and the lower part of the annular bulge is clamped at the joint of the weak soil layer and the hard soil layer, so that the bearing capacity of the tubular pile is improved; (3) by installing the overflow valve in part of the grouting channel, the grout can be ensured to be kept in the expansion bag before initial setting during later-stage grouting.
Drawings
Fig. 1 is the utility model relates to a can improve the interact schematic diagram of side resistance's prestressing force tubular pile and soil body.
Fig. 2 is the utility model relates to a can improve the sketch map of dissecting of side resistance's prestressed pipe pile.
Fig. 3 is the utility model relates to a can improve the structural schematic diagram of overflow valve in the prestressed pipe pile of side resistance.
Fig. 4 is a schematic view of the section of the expandable grouting pipe in the prestressed pipe pile capable of improving the lateral resistance of the utility model.
Wherein, 1-tubular pile main body, 2-grouting channel, 3-expansion bag, 4-overflow valve, 5-soil layer, 6-expandable grouting pipe, 41-belt, 42-baffle, 43-fixed column, 61-grouting pipe, 62-upper plug, 63-spout, 64-lower plug.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments:
example 1:
as shown in fig. 1 to 3, a prestressed pipe pile capable of improving lateral resistance is characterized by comprising a pipe pile main body 1, a grouting channel 2, an expansion bag 3, an overflow valve 4 and an expandable grouting pipe 6; the overflow valve includes belt 41, baffle 42, fixed column 43, it has slip casting passageway 2 to reserve on the tubular pile main part 1, installs overflow valve 4 in the part slip casting passageway 2, belt 41 one end gluing is on tubular pile main part 1, and the other end gluing is on baffle 42, inflation bag 3 passes through the clamp to be fixed in the tubular pile main part 1 outside, and including inflation bag 3 will have the slip casting passageway 2 parcel of overflow valve 4, tubular pile main part 1 is connected through gluing with soil layer 5, carries out the slip casting through expandable slip casting pipe 6 to inflation bag 3.
Preferably, slip casting passageway 2 runs through tubular pile main part 1, on 1 length direction of tubular pile main part, reserves two slip casting passageways 2 on every cross section, and two slip casting passageways 2 are along central point symmetric distribution in tubular pile main part 1 cross section, and the diameter of slip casting passageway 2 is 3cm, along 1 length direction of tubular pile main part, sets up two slip casting passageways 2 every 1.0 m.
Preferably, the belt 41 is made of rubber, the width of the belt 41 is 1.5cm, a pretightening force is arranged when the belt 41 is connected to the tubular pile main body 1 and the baffle 42, the pretightening force ranges from 20N to 2000N, the baffle 42 and the fixing column 43 are both made of steel, the baffle 42 and the fixing column 43 are connected through welding, the baffle 42 is 1.5cm thick, the baffle 42 is of a square structure, the side length of the baffle 42 is 7cm, the diameter of the fixing column 43 is 0.9 times of the diameter of the grouting channel 2, and the length of the fixing column 43 is 7 cm.
Preferably, the material of the expansion bag 4 is rubber, the thickness of the expansion bag 4 is 1.0cm, the expansion bag 4 is cylindrical, and the diameter of the expansion bag 4 is 1.1 times of the diameter of the tubular pile main body 1.
Preferably, the expandable grouting pipe 6 comprises a grouting pipe 61, an upper plug 62, a nozzle 63 and a lower plug 64, the grouting pipe 61 is a double pipe made of alloy materials, the inner pipe is a grouting pipe, the outer pipe is an air pipe, the upper plug 62 and the lower plug 64 are arranged on the outer pipe, the distance between the upper plug and the lower plug is 1.5m, the nozzle 63 is arranged on the grouting pipe 61 between the upper plug and the lower plug, and the nozzle 63 is communicated with the grouting pipe but not communicated with the air pipe.
Preferably, the grip force of the clamp is larger than the grouting pressure.
Preferably, the expansion bladder 4 can be fixed at any position outside the tubular pile body 1, and particularly, the expansion bladder 4 can be fixed at the bottommost part of the tubular pile body 1 to form a pile bottom expansion head.
Example 2:
as shown in fig. 1 to 3, a prestressed pipe pile capable of improving lateral resistance is adopted for construction, and the concrete construction steps are as follows:
(1) firstly, carrying out geological survey on a construction site, and determining the position and thickness of each soil layer;
(2) installing an overflow valve 4 in the grouting channel 2 at the depth corresponding to the weak soil layer;
(3) binding an expansion bag 3 to a tubular pile main body 1 by applying a hoop at a depth corresponding to a weak soil layer, ensuring that a grouting channel 2 exists in a range wrapped by the expansion bag 3, and installing overflow valves 4 in the grouting channel 2;
(4) the two sections of pipe pile main bodies 1 are connected in a welding mode, and when the pipe pile main bodies 1 are completely inserted into a soil body, the expansion bag 3 is grouted by the expandable grouting pipe 6;
(5) firstly, inflating air into the upper plug 62 and the lower plug 64 through an air pipe, and keeping the current air pressure when the upper plug 62 and the lower plug 64 are fully expanded and are in close contact with an inner pipe of the tubular pile main body 1;
(6) grouting the cavity between the upper plug 62 and the lower plug 64 through a grouting pipe, and enabling the grout to enter the expansion bag 3 through the grouting channel 2 and the overflow valve 4;
(7) stopping grouting when the grouting pressure in the grouting pipe is greater than 1 MPa;
(8) and (4) exhausting the gas in the upper plug 62 and the lower plug 64, and pulling out the expandable grouting pipe 6 to finish the construction.
Preferably, the expandable grouting pipe 6 comprises a grouting pipe 61, an upper plug 62, a nozzle 63 and a lower plug 64, the grouting pipe 61 is a double pipe made of alloy, the inner pipe is a grouting pipe, the outer pipe is an air pipe, the upper plug 62 and the lower plug 64 are arranged on the outer pipe, the distance between the upper plug and the lower plug is 1.5m, the nozzle 63 is arranged in the middle of the distance between the upper plug and the lower plug, and the nozzle 63 is communicated with the grouting pipe but not communicated with the air pipe.
The utility model relates to a prestressed pipe pile capable of improving lateral resistance, which can increase the lateral resistance of the pipe pile through later grouting by reserving a grouting channel on the main body of the pipe pile; the expansion bag is arranged on the outer side of the grouting channel, mortar is injected into the expansion bag in the later period according to the position of the weak soil layer to form an annular bulge, and the lower part of the annular bulge is clamped at the joint of the weak soil layer and the hard soil layer, so that the bearing capacity of the tubular pile is improved; by installing the overflow valve in part of the grouting channel, the grout can be ensured to be kept in the expansion bag before initial setting during later-stage grouting.
Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and the changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention also belong to the protection scope of the present invention.
Claims (7)
1. A prestressed pipe pile capable of improving lateral resistance is characterized by comprising a pipe pile main body, a grouting channel, an expansion bag, an overflow valve and an expandable grouting pipe; the overflow valve includes belt, baffle, fixed column, the reservation has the slip casting passageway in the tubular pile main part, installs the overflow valve in the part slip casting passageway, belt one end is glued in the tubular pile main part, and the other end is glued on the baffle, the inflation bag passes through the clamp to be fixed in the tubular pile main part outside, and the inflation bag carries out the slip casting to the inflation bag through expandable slip casting pipe including the slip casting passageway parcel that will have the overflow valve.
2. The prestressed pipe pile capable of improving the lateral resistance according to claim 1, wherein the grouting channels penetrate through the pipe pile body, two grouting channels are reserved on each cross section along the length direction of the pipe pile body, the two grouting channels are symmetrically distributed along a central point in the cross section of the pipe pile body, the diameter of each grouting channel is 2 cm-5 cm, and two grouting channels are arranged every 0.5 m-2.0 m along the length direction of the pipe pile body.
3. The prestressed tubular pile capable of improving the lateral resistance is characterized in that the belt is made of rubber, the width of the belt is 1 cm-2 cm, a pre-tightening force is set when the belt is connected to the tubular pile main body and the baffle, the range of the pre-tightening force is 20N-2000N, the baffle and the fixing column are made of steel, the baffle is connected with the fixing column through welding, the thickness of the baffle is 0.3 cm-1.5 cm, the baffle is of a square structure, the side length of the baffle is 5 cm-10 cm, the diameter of the fixing column is 0.8-0.9 times of the diameter of a grouting channel, and the length of the fixing column is 5 cm-10 cm.
4. The prestressed tubular pile capable of improving the lateral resistance as claimed in claim 1, wherein the expansion bag is made of rubber, the thickness of the expansion bag is 0.5cm to 1.5cm, the expansion bag is cylindrical, and the diameter of the expansion bag is 1.1 to 1.2 times of the diameter of the tubular pile main body.
5. The prestressed pipe pile of claim 1, wherein the expandable grouting pipe comprises a grouting pipe, an upper block, a nozzle and a lower block, the grouting pipe is a dual pipe made of alloy, the inner pipe is a grouting pipe, the outer pipe is an air pipe, the upper block and the lower block are arranged on the outer pipe, the distance between the upper block and the lower block is 0.5-3.0 m, the nozzle is arranged on the grouting pipe between the upper block and the lower block, and the nozzle is communicated with the grouting pipe but not communicated with the air pipe.
6. The prestressed pipe pile for improving side resistance according to claim 1, wherein said clamp has a holding force greater than grouting pressure.
7. The prestressed pipe pile for improving side resistance according to claim 1, wherein said expansion bladder can be fixed at any position outside the main body of the pipe pile, in particular, the expansion bladder can be fixed at the bottom of the main body of the pipe pile to form a pile bottom expansion head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020532600.3U CN212077919U (en) | 2020-04-13 | 2020-04-13 | Prestressed pipe pile capable of improving lateral resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020532600.3U CN212077919U (en) | 2020-04-13 | 2020-04-13 | Prestressed pipe pile capable of improving lateral resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212077919U true CN212077919U (en) | 2020-12-04 |
Family
ID=73594310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020532600.3U Active CN212077919U (en) | 2020-04-13 | 2020-04-13 | Prestressed pipe pile capable of improving lateral resistance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212077919U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113216157A (en) * | 2021-05-15 | 2021-08-06 | 湖南省筱沅水利水电建设有限公司 | Prefabricated tubular pile convenient to used repeatedly |
| CN114108616A (en) * | 2021-12-06 | 2022-03-01 | 韶关市鹏成建筑工程有限公司 | PHC pipe pile construction method |
| CN114934503A (en) * | 2022-05-09 | 2022-08-23 | 广东工业大学 | Tubular pile capable of directional grouting |
-
2020
- 2020-04-13 CN CN202020532600.3U patent/CN212077919U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113216157A (en) * | 2021-05-15 | 2021-08-06 | 湖南省筱沅水利水电建设有限公司 | Prefabricated tubular pile convenient to used repeatedly |
| CN114108616A (en) * | 2021-12-06 | 2022-03-01 | 韶关市鹏成建筑工程有限公司 | PHC pipe pile construction method |
| CN114108616B (en) * | 2021-12-06 | 2022-12-09 | 韶关市鹏成建筑工程有限公司 | PHC pipe pile construction method |
| CN114934503A (en) * | 2022-05-09 | 2022-08-23 | 广东工业大学 | Tubular pile capable of directional grouting |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN212077919U (en) | Prestressed pipe pile capable of improving lateral resistance | |
| CN201013018Y (en) | Injection anchor bar of plasm capsule bag | |
| CN103233454A (en) | Processing method of soaking, vacuum preloading and slurry injecting for sand piles of collapsible loess foundation | |
| CN212077914U (en) | Tubular pile capable of improving lateral resistance | |
| CN108547336B (en) | Sedimentation, reinforcement, jacking and leveling method suitable for independent pile foundation of industrial plant | |
| CN208220817U (en) | Large section Shallow-Buried Soft Rock tunnel groined type double side wall support system | |
| CN101761074A (en) | Method for improving bearing capacity and tensile capacity of tubular pile end | |
| CN105298516A (en) | Combined supporting structure of steel pipe pile steel-bar-embedded tunnel composite lining used for soft foundation | |
| CN102168563A (en) | Static pressure jack-in method of pipe sheds or small ducts | |
| CN106836213A (en) | Grouting behind shaft or drift lining pre-stress hollow square pile and its construction technology | |
| CN208136918U (en) | A kind of tubular type Soil-Nailing Wall Structure | |
| CN205225280U (en) | A combined supporting structure that is used for steel -pipe pile bar planting tunnel composite lining of soft base | |
| CN113944158B (en) | Anti-pulling type pipe pile and construction process thereof | |
| CN204023559U (en) | A kind of multiple holes grouting pipe shaped pile | |
| CN104141304B (en) | The construction method of a kind of extrusion molding preformed pile stiff-core cement soil Y shape stake | |
| CN201835276U (en) | Prefabricated reaming pile | |
| CN103410144B (en) | Prestressed reinforcement piles set into rock and construction method | |
| CN208472592U (en) | Close to the steel pipe pile reinforced construction of deep basal pit bridge friction pile | |
| CN101793027B (en) | Core-grouted static pressure anchor rod pile | |
| CN105780766A (en) | Drilling backfill end bearing pile foundation and construction method thereof | |
| CN113235638A (en) | Construction method of composite pile foundation with long pile and short pile integrated | |
| CN108842761A (en) | Drilling guiding prefabricated pile post-grouting technology | |
| CN108222022A (en) | A kind of tubular type Soil-Nailing Wall Structure and its construction method | |
| CN205046592U (en) | Building foundation consolidates stake | |
| CN208136912U (en) | A kind of small pre-stress pipe muscle formula soil nailing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |