CN115233751B - Method and device for testing load internal force of prestressed pipe pile - Google Patents
Method and device for testing load internal force of prestressed pipe pile Download PDFInfo
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- CN115233751B CN115233751B CN202211027839.5A CN202211027839A CN115233751B CN 115233751 B CN115233751 B CN 115233751B CN 202211027839 A CN202211027839 A CN 202211027839A CN 115233751 B CN115233751 B CN 115233751B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
Abstract
The application relates to a method for testing the load internal force of a prestressed pipe pile, which comprises the following steps: s1: modeling in equal proportion, and producing the tubular pile with equal proportion reduced according to the proportion by adopting the same material and the same process; s2: the detection points are arranged, and the detection points are circumferentially arranged on the inner wall and the outer wall of the tubular pile; s3: the method comprises the steps of (1) installing a pipe pile, installing the pipe pile on a detection device, and plugging the pipe pile circumferentially by adopting soil; s4: filling the inside, and pouring and filling concrete in the tubular pile; s5: load loading, namely loading the load on the tubular pile; s6: and testing the internal force, detecting the internal force of the tubular pile through loading and pre-arranged test points, and obtaining a detection result according to detection data. The application has the effect of saving the cost of tubular pile detection.
Description
Technical Field
The application relates to the field of pipe pile construction detection, in particular to a method and a device for testing the load internal force of a prestressed pipe pile.
Background
The prestressed pipe pile is a pipe pile poured by concrete, is a common building material, and in order to ensure that the high-rise building is not easy to fall down during construction, the pipe pile needs to be knocked into the ground, and then the construction of the building is carried out on the pipe pile.
The pipe pile has a great influence on the construction quality of the building by the load internal force, so that the load internal force of the pipe pile needs to be detected before the building is constructed on the pipe pile.
Aiming at the related technology, the inventor considers that when the existing pipe pile is detected, the pipe pile is driven into the ground, then concrete is poured into the pipe pile, the load internal force of the pipe pile is detected after the concrete is solidified, the whole process needs to be actually operated on the field, and when the detected pipe pile is unqualified, the pipe pile needs to be pulled out, a new pipe pile is replaced, and the cost is high.
Disclosure of Invention
In order to save the cost of pipe pile detection, the application provides a method for testing the load internal force of a prestressed pipe pile.
The application provides a method for testing the load internal force of a prestressed pipe pile, which adopts the following technical scheme:
a method for testing the load internal force of a prestressed pipe pile comprises the following steps:
s1: modeling in equal proportion, and producing the tubular pile with equal proportion reduced according to the proportion by adopting the same material and the same process;
s2: the detection points are arranged, and the detection points are circumferentially arranged on the inner wall and the outer wall of the tubular pile;
s3: the method comprises the steps of (1) installing a pipe pile, installing the pipe pile on a detection device, and plugging the pipe pile circumferentially by adopting soil;
s4: filling the inside, and pouring and filling concrete in the tubular pile;
s5: load loading, namely loading the load on the tubular pile;
s6: and testing the internal force, detecting the internal force of the tubular pile through loading and pre-arranged test points, and obtaining a detection result according to detection data.
Through adopting above-mentioned technical scheme, modeling through the reduction ratio, carrying out the detection of load internal force in the laboratory through check out test set to the tubular pile after the reduction ratio, obtain the load internal force condition of tubular pile, need not to insert the tubular pile building site actual measurement, reduce the tubular pile disqualification and lead to the probability of wasting of resources, practice thrift the cost that the tubular pile detected.
Optionally, the soil digs out soil in the actual insertion area and simulates the environment of the actual insertion area of the tubular pile
Through adopting above-mentioned technical scheme, adopt the tubular pile to insert the earth of establishing the region in fact, make the simulation environment that detects can be more similar with the field to promote detection accuracy.
The utility model provides an application prestressing force tubular pile load internal force test method's testing arrangement, includes the base, base deviates from ground one side and is provided with the placing tray, place the tubular pile on the placing tray, place the clamp plate on the tubular pile, set up the jack on the clamp plate, be provided with the placing plate on the jack, place the balancing weight on the placing plate, be provided with the filling component in the tubular pile, the filling component includes the ring body, aerifys piece and filling layer, the ring body clearance is inserted and is located the tubular pile inner wall, aerify the piece setting at the ring body inner wall, the filling layer is filled and is set up between ring body and tubular pile inner wall, filling layer outer wall butt tubular pile inner wall, filling layer inner wall butt ring body outer wall.
Through adopting above-mentioned technical scheme, ring body and tubular pile inner wall clearance setting are used for pouring the filling layer, and the setting of ring body and inflation subassembly can reduce the area of the hole of tubular pile, reduces the pouring filling quantity of concrete to play the effect of resources are saved.
Optionally, the base is in placing a plurality of montants that are provided with vertically in a set circumference, the montant all runs through and places the board, places the board and slides along montant length direction and set up on the montant.
Through adopting above-mentioned technical scheme, the setting of montant can be to placing the board and carry out the guide effect to the position of placing the board is adjusted according to the tubular pile of different length to the convenience.
Optionally, elastic pieces are respectively sleeved on the vertical rods, one ends of the elastic pieces are abutted to the base, and the other ends of the elastic pieces extend towards the placing plate and are in clearance fit with the placing plate.
Through adopting above-mentioned technical scheme, the setting of elastic component can slow down the impact force of placing board and configuration piece to check out test set when the tubular pile is broken, reduces the probability that check out test set damaged.
Optionally, the tubular pile outer wall cladding clay layer, be provided with a plurality of plate bodies outside the clay layer, a plurality of the plate body head and the tail link to each other cladding clay layer.
Through adopting above-mentioned technical scheme, the setting of clay layer can imitate actual environment through the volume, promotes detection accuracy, and the setting of plate body can reduce the clay layer and break away from the probability of tubular pile under the action of gravity.
Optionally, the pressure mechanism is installed to the corresponding plate body on the base, pressure mechanism includes mounting bracket and pressure spring, and mounting bracket and plate body clearance set up, the mounting bracket is installed on the base, pressure spring sets up between mounting bracket and plate body, and pressure spring one end sets firmly on the mounting bracket, and the other end supports the plate body, and pressure spring's elasticity drive plate body slides towards keeping away from the mounting bracket direction.
Through adopting above-mentioned technical scheme, pressure mechanism's setting can make the plate body possess elasticity, can bear the impact force, makes environmental simulation and actual conditions more be close.
Optionally, be provided with adjustment mechanism between plate body and the mounting bracket, adjustment mechanism includes adjusting screw and adjusting nut, adjusting screw sets firmly in the plate body towards mounting bracket one side, and adjusting screw keeps away from plate body one end and runs through the mounting bracket, adjusting nut deviates from plate body one end butt on the mounting bracket in the mounting bracket, adjusting nut threaded connection is on adjusting screw.
Through adopting above-mentioned technical scheme, adjustment mechanism's setting can adjust the elasticity of plate body to according to the elasticity of actual earth condition regulation plate body, make detection environment and actual condition more close, further promote detection precision.
Optionally, the plate body is provided with the anti-sticking membrane towards mud layer one side and ring body towards filling layer one side.
Through adopting above-mentioned technical scheme, the setting of anti-sticking membrane can reduce the probability that earth adhesion is on the plate body and concrete adhesion is on the ring body to make plate body and ring body can reuse, resources are saved.
Optionally, a plurality of detection pieces are uniformly arranged on the outer wall and the inner wall of the tubular pile in the circumferential direction.
Through adopting above-mentioned technical scheme, all set up the detecting piece in the outer wall, can make the check point distribute more evenly, the testing result is more accurate.
In summary, the present application includes at least one of the following beneficial technical effects:
1. modeling is carried out through the reduction ratio, the load internal force of the tubular pile is detected in a laboratory through detection equipment, the load internal force condition of the tubular pile is obtained, the tubular pile is not required to be inserted into a construction site for actual measurement, the probability of resource waste caused by unqualified tubular pile is reduced, and the cost of tubular pile detection is saved;
2. soil in the actual insertion area of the tubular pile is adopted, so that the simulation environment of detection can be more similar to that of the field, and the detection precision is improved;
3. the gap between the ring body and the inner wall of the tubular pile is used for pouring the filling layer, and the arrangement of the ring body and the air inflation assembly can reduce the area of the hole of the tubular pile and the pouring filling amount of concrete, so that the effect of saving resources is achieved;
4. the elastic piece can slow down the impact force of the placing plate and the configuration block on the detection equipment when the pipe pile is broken, so that the probability of damage of the detection equipment is reduced;
5. the arrangement of the clay layer can simulate the actual environment by volume, the detection precision is improved, and the arrangement of the plate body can reduce the probability that the clay layer is separated from the pipe pile under the action of gravity;
6. the setting of anti-sticking membrane can reduce the probability that earth adhesion is on the plate body and concrete adhesion is on the ring body to make plate body and ring body can reuse, resources are saved.
Drawings
Fig. 1 is a flow chart of the test method of the present embodiment.
Fig. 2 is an overall configuration diagram of the test apparatus of the present embodiment.
Fig. 3 is an enlarged view of the portion a in fig. 2.
Reference numerals illustrate: 1. a base; 2. placing a tray; 3. a tubular pile; 4. a pressing plate; 5. a jack; 6. placing a plate; 7. balancing weight; 8. a filling assembly; 81. a ring body; 82. an inflatable member; 83. a filling layer; 9. a vertical rod; 10. an elastic member; 11. a clay layer; 12. a plate body; 13. a pressure mechanism; 131. a mounting frame; 132. a pressure spring; 14. an adjusting mechanism; 141. adjusting a screw; 142. an adjusting nut; 15. an anti-sticking film; 16. and (3) detecting the sheet.
Detailed Description
The application is described in further detail below with reference to fig. 1-3.
The embodiment of the application discloses a method for testing the load internal force of a prestressed pipe pile, which comprises the following steps with reference to fig. 1: s1: the equal proportion modeling is carried out, the equal proportion reduced tubular pile 3 is produced according to the proportion by adopting the same material and the same process, the modeling is carried out through the reduction proportion, the load internal force of the tubular pile 3 after the reduction proportion is detected in a laboratory through detection equipment, the load internal force condition of the tubular pile 3 is obtained, the tubular pile 3 is not required to be inserted into a construction site for actual measurement, the probability of resource waste caused by unqualified tubular pile 3 is reduced, and the detection cost of the tubular pile 3 is saved; s2: the arrangement of detection points is that the detection points are circumferentially arranged on the inner wall and the outer wall of the pipe pile 3, and the arrangement of the detection points is as uniform as possible; s3: the pipe pile is installed, the pipe pile 3 is installed on the detection device, soil is adopted to plug the pipe pile 3 in the circumferential direction, soil in an actual insertion area is dug by the soil, the environment of the actual insertion area of the pipe pile 3 is simulated, the soil is plugged in the circumferential direction of the pipe pile 3, the real environment can be simulated when the pipe pile 3 is detected, and therefore detection accuracy is improved; s4: filling the inside, and pouring and filling concrete in the tubular pile 3; s5: load loading is carried out on the tubular pile 3 according to the actual scaling of the tubular pile 3; s6: and testing the internal force, detecting the internal force of the tubular pile 3 through loading and pre-arranged test points, obtaining a detection result through calculation according to detection data, and considering the actual scaling of the tubular pile 3 when calculating the detection data so as to ensure the calculation accuracy.
Referring to fig. 2 and 3, the test device for testing the internal force of the prestressed pipe pile load comprises a base 1 placed on a test platform or the ground, a placing tray 2 is fixedly arranged on one side of the base 1 away from the ground, a pipe pile 3 is placed on the placing tray 2, a pressing plate 4 is placed on the pipe pile 3, a jack 5 is arranged on the pressing plate 4, a placing plate 6 is arranged on the jack 5, the jack 5 is preferentially provided with even numbers, the placing plate 6 can be placed more flatly by the even number of the jack 5, a balancing weight 7 is placed on the placing plate 6, a filling assembly 8 is arranged in the pipe pile 3, the filling assembly 8 comprises a ring 81 which is inserted into the inner wall of the pipe pile 3 in a gap, an inflatable member 82 arranged on the inner wall of the ring 81 and a filling layer 83 which is filled between the ring 81 and the inner wall of the pipe pile 3, when the ring 81 is selectively placed on the placing tray 2, one end far away from the placing tray 2 is slightly lower than a metal ring 81 of a pipeline, the inflatable member 82 is preferably an air bag, the inflatable member is abutted against the inner wall of the ring 81 to support the ring 81, the filling layer 83 is made of concrete, the ring 81 is covered with a layer of anti-sticking film 15 towards one side of the filling layer 83 by matching the concrete with the ring 81 and the inflatable member 82, the anti-sticking film 15 is made of PE film, the PE film is low in cost and has anti-sticking effect, even if the PE film is adhered to the PE film, the PE film can be torn off for replacement, thereby ensuring the repeated use of the ring 81, saving the use cost, the upper surface of the inflatable member 82 is covered with a metal sheet, the metal sheet can isolate the concrete from the inflatable member 82, the outer wall of the filling layer 83 is abutted against the inner wall of the tubular pile 3, the inner wall of the filling layer 83 is abutted against the outer wall of the ring 81, the gap between the ring 81 and the inner wall of the tubular pile 3 is used for pouring the filling layer 83, the arrangement of the ring 81 and the inflatable member can reduce the area of the hole of the tubular pile 3, the pouring filling quantity of concrete is reduced, so that the effect of saving resources is achieved.
Referring to fig. 2, the outer wall of the pipe pile 3 is coated with a soil layer 11, four plate bodies 12 are arranged outside the soil layer 11, the four plate bodies 12 are connected end to end and are coated with the soil layer 11, an anti-sticking film 15 is arranged on one side of the plate body 12 facing the soil layer 11, the anti-sticking film 15 is a PE film, the PE film has low cost and anti-sticking effect, and the PE film can be removed and replaced even if the PE film is adhered to the PE film, so that the repeated use of the plate body 12 is ensured, and the use cost is saved; four pressure mechanisms 13 are arranged on the base 1 corresponding to the plate body 12, each pressure mechanism 13 comprises a mounting frame 131 arranged on the base 1 and a plurality of pressure springs 132 arranged between the mounting frame 131 and the plate body 12, the mounting frame 131 and the plate body 12 are arranged in a clearance way, one end of each pressure spring 132 is fixedly arranged on the mounting frame 131, the other end of each pressure spring abuts against the plate body 12, and the elastic force of each pressure spring 132 drives the plate body 12 to slide towards a direction far away from the mounting frame 131; an adjusting mechanism 14 is arranged between the plate body 12 and the mounting frame 131, the adjusting mechanism 14 comprises an adjusting screw 141 fixedly arranged on one side of the plate body 12, which faces the mounting frame 131, and an adjusting screw cap 142 in threaded connection with the adjusting screw 141, one end of the adjusting screw 141, which is far away from the plate body 12, penetrates through the mounting frame 131, the adjusting screw cap 142 is abutted against the mounting frame 131 at one end, which is far away from the plate body 12, of the mounting frame 131, the outer wall of the pipe pile 3 is coated with a layer of soil layer 11, so that the detection environment is more similar to the actual environment, the detection precision is improved, the soil layer 11 is arranged on the ground under the actual condition, the soil circumference of the detection environment is not provided with the ground, the soil circumference is not supported to be separated from the pipe pile 3 under the action of gravity, the plate body 12 is required to be coated with the soil, the soil is limited to be separated, meanwhile, the plate body 12 is directly coated with a rigid material to influence the soil itself, and the pressure mechanism 13 is arranged on the plate body 12, so that the soil layer 12 can imitate the pressure of the soil under the actual environment, and the soil layer 11 can be more similar to the actual environment. .
Referring to fig. 2, an inverted T-shaped groove is formed in the base 1 corresponding to the mounting frame 131, a bolt is inserted into the T-shaped groove, the bolt penetrates through the mounting frame 131 and fixes the mounting frame 131 through a threaded connection nut, when the elastic force between the plate body 12 and the mounting frame 131 is adjusted, the gap between the plate body 12 and the mounting frame 131 is adjusted, and the plate body 12 needs to be guaranteed to be connected end to end, so that the adjustment of the mounting frame 131 is realized through the T-shaped groove matched with the bolt and the nut, and the mounting frame 131 can be suitable for the adjustment of the plate body 12.
Referring to fig. 2, a plurality of detecting pieces 16 are uniformly arranged on the outer wall and the inner wall of the pipe pile 3 in the circumferential direction, the detecting pieces 16 are electrically connected with an information receiver, detected internal force data are transmitted and recorded, the detecting pieces 16 are arranged on the inner wall and the outer wall, detection points can be distributed more uniformly, and the detection result is more accurate.
Referring to fig. 2, four vertical rods 9 are vertically arranged on the base 1 in the circumferential direction of the placement tray 2, the vertical rods 9 penetrate through the placement plate 6, and the placement plate 6 is slidably arranged on the vertical rods 9 along the length direction of the vertical rods 9; all the cover is equipped with elastic component 10 on the montant 9, elastic component 10 prefers the spring, elastic component 10 one end butt is on base 1, the other end orientation is placed board 6 and is extended and place board 6 clearance fit, when tubular pile 3 appears damaging, place board 6 and balancing weight 7 under the effect of gravity and can slide down, thereby the detection equipment is crushed easily, elastic component 10's setting can provide the reaction force to placing board 6 and balancing weight 7, reduce the probability that detection equipment is crushed, and elastic component 10 and the clearance setting of placing board 6, the elasticity that has reduced elastic component 10 causes the probability of influence to the detection.
The implementation principle of the embodiment of the application is as follows: the base 1 is fixed on the ground or a detection platform, then the pipe pile 3 is placed on the placement disc 2, then the detection piece 16 is arranged on the inner wall and the outer wall of the pipe pile 3, the ring body 81 and the inflation piece 82 are placed in the pipe pile 3, concrete is poured between the ring body 81 and the pipe pile 3 after the inflation piece 82 is inflated, after the concrete is solidified, a clay layer 11 is circumferentially adhered to the outer wall of the pipe pile 3, a plate body 12 with elasticity adjusted is arranged outside the clay layer 11, then the pressing plate 4 is pressed on the pipe pile 3, the jack 5 is placed on the pressing plate 4, the placement plate 6 is arranged on the jack 5 after the jack 5 is placed, a configuration block with proper weight is placed on the placement plate 6, the pipe pile 3 is detected, the numerical value of the internal load force of the pipe pile 3 is detected through the detection piece 16, and the actual internal load force of the pipe pile 3 is obtained through calculation.
The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.
Claims (7)
1. A method for testing the load internal force of a prestressed pipe pile comprises the following steps:
s1: modeling in equal proportion, and producing the tubular pile with equal proportion reduced according to the proportion by adopting the same material and the same process;
s2: the detection points are arranged, and the detection points are circumferentially arranged on the inner wall and the outer wall of the tubular pile;
s3: the method comprises the steps of (1) installing a pipe pile, installing the pipe pile on a detection device, and plugging the pipe pile circumferentially by adopting soil;
s4: filling the inside, and pouring and filling concrete in the tubular pile;
s5: load loading, namely loading the load on the tubular pile;
s6: testing the internal force, detecting the internal force of the tubular pile through loading and pre-arranged test points, and obtaining a detection result according to detection data;
the testing device comprises a base (1), a placing disc (2) is arranged on one side, deviating from the ground, of the base (1), a tubular pile (3) is placed on the placing disc (2), a pressing plate (4) is placed on the tubular pile (3), a jack (5) is arranged on the pressing plate (4), a placing plate (6) is arranged on the jack (5), a balancing weight (7) is placed on the placing plate (6), a filling assembly (8) is arranged in the tubular pile (3), the filling assembly (8) comprises a ring body (81), an inflating piece (82) and a filling layer (83), the ring body (81) is inserted into the inner wall of the tubular pile (3) in a gap, the inflating piece (82) is arranged on the inner wall of the ring body (81), the filling layer (83) is filled between the ring body (81) and the inner wall of the tubular pile (3), the outer wall of the filling layer (83) is in butt joint with the inner wall of the tubular pile (3), and the inner wall of the filling layer (83) is in butt joint with the outer wall of the ring body (81). The outer wall of the pipe pile (3) is coated with a clay layer (11), a plurality of plate bodies (12) are arranged outside the clay layer (11), and the clay layers (11) are coated by connecting the plate bodies (12) end to end; the utility model discloses a pressure mechanism, including base (1) and plate body (12), pressure mechanism (13) are installed to corresponding plate body (12), pressure mechanism (13) include mounting bracket (131) and pressure spring (132), mounting bracket (131) and plate body (12) clearance setting, mounting bracket (131) are installed on base (1), pressure spring (132) set up between mounting bracket (131) and plate body (12), pressure spring (132) one end is fixed on mounting bracket (131), and other end butt plate body (12), and elasticity drive plate body (12) of pressure spring (132) are slided towards keeping away from mounting bracket (131) direction.
2. The method for testing the load internal force of the prestressed pipe pile according to claim 1, wherein the method comprises the following steps: the soil is dug out in the actual insertion area, and the environment of the actual insertion area of the tubular pile (3) is simulated.
3. The method for testing the load internal force of the prestressed pipe pile according to claim 1, wherein the method comprises the following steps: the base (1) is provided with a plurality of montants (9) in the vertical direction of placing dish (2), montant (9) all run through and place board (6), place board (6) and slide along montant (9) length direction and set up on montant (9).
4. A method for testing the load internal force of a prestressed pipe pile according to claim 3, wherein: elastic pieces (10) are sleeved on the vertical rods (9), one ends of the elastic pieces (10) are abutted to the base (1), and the other ends of the elastic pieces extend towards the placing plate (6) and are in clearance fit with the placing plate (6).
5. The method for testing the load internal force of the prestressed pipe pile according to claim 1, wherein the method comprises the following steps: be provided with adjustment mechanism (14) between plate body (12) and mounting bracket (131), adjustment mechanism (14) are including adjusting screw (141) and adjusting nut (142), adjusting screw (141) set firmly in plate body (12) towards mounting bracket (131) one side, and adjusting screw (141) keep away from plate body (12) one end and run through mounting bracket (131), adjusting nut (142) deviate from plate body (12) one end butt on mounting bracket (131) in mounting bracket (131), adjusting nut (142) threaded connection is on adjusting screw (141).
6. The method for testing the load internal force of the prestressed pipe pile according to claim 5, wherein the method comprises the following steps: the anti-sticking film (15) is arranged on one side of the plate body (12) facing the clay layer (11) and one side of the ring body (81) facing the filling layer (83).
7. The method for testing the load internal force of the prestressed pipe pile according to claim 1, wherein the method comprises the following steps: a plurality of detection pieces (16) are uniformly arranged on the outer wall and the inner wall of the tubular pile (3) in the circumferential direction.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211027839.5A CN115233751B (en) | 2022-08-25 | 2022-08-25 | Method and device for testing load internal force of prestressed pipe pile |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211027839.5A CN115233751B (en) | 2022-08-25 | 2022-08-25 | Method and device for testing load internal force of prestressed pipe pile |
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| CN115233751B true CN115233751B (en) | 2023-10-13 |
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| CN212427270U (en) * | 2020-06-17 | 2021-01-29 | 福州大学 | Passive pile test device for simulating soil displacement boundary conditions |
| CN213296446U (en) * | 2020-08-16 | 2021-05-28 | 山东众联恒信工程集团有限公司 | Static pressure tubular pile end resistance testing arrangement |
| CN214940486U (en) * | 2021-05-24 | 2021-11-30 | 云南明博地基基础工程有限公司 | Foundation engineering multisection prestressing force tubular pile body internal force measuring device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201722711U (en) * | 2010-05-13 | 2011-01-26 | 机械工业勘察设计研究院 | Internal force testing device for PHC tubular pile load test |
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| CN212427270U (en) * | 2020-06-17 | 2021-01-29 | 福州大学 | Passive pile test device for simulating soil displacement boundary conditions |
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| CN214940486U (en) * | 2021-05-24 | 2021-11-30 | 云南明博地基基础工程有限公司 | Foundation engineering multisection prestressing force tubular pile body internal force measuring device |
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|---|---|
| CN115233751A (en) | 2022-10-25 |
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