CN223202395U - Pile foundation bearing capacity detection device - Google Patents
Pile foundation bearing capacity detection deviceInfo
- Publication number
- CN223202395U CN223202395U CN202421738667.7U CN202421738667U CN223202395U CN 223202395 U CN223202395 U CN 223202395U CN 202421738667 U CN202421738667 U CN 202421738667U CN 223202395 U CN223202395 U CN 223202395U
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- China
- Prior art keywords
- pile foundation
- detection device
- bearing capacity
- steel
- capacity detection
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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The utility model provides a pile foundation bearing capacity detection device which comprises a steel backing plate, an oil jack, a main beam, a pull-press composite anchor rod, secondary beams and a distribution beam, wherein the steel backing plate, the oil jack, the steel backing plate and the main beam are sequentially arranged above the pile foundation from bottom to top, two ends of the main beam are fixed on the ground through the pull-press composite anchor rod, the secondary beams are four and have acute angles with the main beam, two pairs of secondary beams are symmetrically distributed on the front side and the rear side of the left end of the main beam, the other two pairs of secondary beams are symmetrically distributed on the front side and the rear side of the right end of the main beam, the distribution beam is arranged on the main beam, the pairs of secondary beams are respectively arranged at two ends of one distribution beam, and the two ends of the secondary beams are fixed on the ground through the pull-press composite anchor rod. The anchor rod is far away from the pile foundation, the anchor rod stress is not influenced by the loosening of soil mass around the pile foundation in the detection process, and the detection device is convenient to install and remove.
Description
Technical Field
The utility model relates to the technical field of building pile foundation detection, in particular to a pile foundation bearing capacity detection device.
Background
Pile foundations are often adopted in general building foundation design, when pile foundation construction is completed, bearing capacity detection is usually required for the pile foundations which are completed through construction, strip stones are required to be used for piling to balance counter force of oil jack in the traditional bearing capacity detection process, as shown in fig. 1, a steel base plate 2, an oil jack 3, the steel base plate 2 and a main beam 4 are sequentially installed above a pile foundation 1, strip stones 5 are piled above the main beam 4, and the piling height of the strip stones 5 is higher. When the pile foundation bearing capacity detection site condition is complex, the site upper clearance is small or large-scale mechanical equipment cannot enter the site to hoist the strip stone, the detection is difficult. Therefore, how to further optimize the detection device while ensuring detection so as to solve the problem that the height of the detection device is too high becomes a critical task at the current stage.
Disclosure of utility model
The technical problem to be solved by the utility model is to provide the pile foundation bearing capacity detection device, wherein the distance between the anchor rod and the pile foundation is far, the stress of the anchor rod is not influenced by the loosening of surrounding soil bodies in the pile foundation detection process, and the detection device occupies less space and is convenient to install and dismantle.
In order to solve the technical problems, the utility model adopts the following technical scheme:
The utility model provides a pile foundation bearing capacity detection device, includes steel backing plate, oil jack, girder, draws and presses compound stock, secondary beam and distribution roof beam, has placed steel backing plate, oil jack, steel backing plate, girder from bottom to top in proper order in the top of pile foundation, the both ends of girder pass through draw and press compound stock to fix subaerial, the secondary beam have four, and with contained angle between the girder is the acute angle, wherein two pairs secondary beam symmetric distribution is in the front side and the rear side of girder left end, other two pairs secondary beam symmetric distribution is in the front side and the rear side of girder right-hand member place on the girder the distribution roof beam, pairs secondary beam is placed respectively at one distribution roof beam's both ends, the both ends of secondary beam are passed through draw and press compound stock to fix subaerial.
Further, all the tension-compression composite anchor rods are distributed on the same circle.
Further, the included angle between the main beam and the secondary beam is 30-45 degrees.
Further, the two distribution beams are symmetrically placed at the position 2-2.5 m away from the midpoint of the main beam.
Further, the pull-press composite anchor rod comprises a steel bar body and a steel sleeve, wherein the lower end of the steel bar body is fixed on the ground, the upper end of the steel bar body penetrates through the end part of the main beam and then penetrates through a steel backing plate to be locked and fixed by the steel sleeve, and the upper end of the steel bar body penetrates through the end part of the secondary beam and then penetrates through a steel backing plate to be locked and fixed by the steel sleeve.
Further, the pull-press composite anchor rod further comprises a PVC sleeve, a pressure-bearing body and a steel sleeve, wherein the PVC sleeve is sleeved on the portion, below the ground, of the steel bar body, and the pressure-bearing body is fixed at the bottom of the PVC sleeve.
Further, the length of the exposed ground of the reinforcing steel body of the pulling and pressing composite anchor rod is 1.5-2 m.
Furthermore, the main beams are two cross beams which are symmetrically arranged front and back.
The utility model has the beneficial effects that all the tension-compression composite anchor rods (anchor rods for short) are far away from the pile foundation, so that soil looseness around the pile foundation has no influence on the anchor rods in the process of carrying out pile foundation bearing capacity detection, the strength of the installation structure of the anchor rods is ensured, and the pile foundation bearing capacity detection is more accurate. In addition, the mode of stacking is not needed, the space required by the installation of the detection device is small, and the detection device is convenient to install and remove due to the adoption of the structure of combining the anchor rod and the steel.
Drawings
FIG. 1 is a schematic diagram of a pile foundation bearing capacity detecting device in the background art;
FIG. 2 is a front view of a pile foundation load capacity detection device according to an embodiment of the present utility model;
FIG. 3 is a top view of a pile foundation load bearing capacity detection apparatus according to an embodiment of the present utility model;
FIG. 4 is a left side view of a pile foundation load bearing capacity detection device according to an embodiment of the present utility model;
FIG. 5 is a top view of a steel backing plate of a pile foundation load capacity detection device according to an embodiment of the present utility model;
FIG. 6 is an enlarged view of a portion of a pull-push composite bolt in a soil body according to an embodiment of the present utility model;
Fig. 7 is an enlarged view of a portion of a top locking portion of a pull and press composite bolt according to an embodiment of the present utility model.
Description of the reference numerals:
1. Pile foundation, steel backing plate, hydraulic jack, main beam, stone bar and pile foundation;
100. 101, oil jack, 102, steel backing plate;
201. 202, distributing beams 203, secondary beams;
300. Drawing and pressing the composite anchor rod, 301, a reinforcement body, 302, drilling, 303, a PVC sleeve, 304, a steel sleeve, 305 and a pressure-bearing body;
500. pile foundation tests affect soil layer range.
Detailed Description
In order to describe the technical contents, the achieved objects and effects of the present utility model in detail, the following description will be made with reference to the embodiments in conjunction with the accompanying drawings.
Referring to fig. 2 to 7, the embodiment provided by the present utility model is as follows:
The utility model provides a pile foundation bearing capacity detection device, includes steel backing plate 102, oil jack 101, girder 201, draws and presses compound stock 300, secondary beam 203 and distribution roof beam 202, and steel backing plate 102, oil jack 101, steel backing plate 102, girder 201 have been placed in proper order from bottom to top to the top of pile foundation 100, the both ends of girder 201 pass through draw and press compound stock 300 to be fixed subaerial, secondary beam 203 have four, and with contained angle between the girder 201 is the acute angle, wherein two pairs secondary beam 203 symmetric distribution is in the front side and the rear side of girder 201 left end, other two pairs secondary beam 203 symmetric distribution is in the front side and the rear side of girder 201 right-hand member place on the girder 201 distribution roof beam 202, the pair secondary beam 203 is placed respectively at one distribution roof beam 202's both ends, the both ends of secondary beam 203 are passed through draw and press compound stock 300 to be fixed subaerial.
All the pulling and pressing composite anchor rods 300 (hereinafter referred to as anchor rods) are far away from the pile foundation 100, so that soil looseness around the pile foundation has no influence on the anchor rods in the pile foundation bearing capacity detection process, the installation structure strength of the anchor rods is guaranteed on one hand, and the pile foundation bearing capacity detection is more accurate on the other hand. In addition, the pressure is not required to be applied in a stacking mode, the space required by the installation of the detection device is small, and the detection device is convenient to install and remove due to the combined structure of the anchor rod and the steel.
The bearing capacity detection process of the pile foundation comprises the step that after the oil jack applies acting force, downward force is applied to the pile foundation, upward force is applied to the main beam, the distribution beam and the secondary beam, and the upward force of the main beam and the secondary beam is finally borne by the anchor rods.
Further, as shown in fig. 3, all the pull-press composite anchors 300 are distributed on the same circle, so that all the anchors of the device are arranged in a circular manner, so that all the anchors are arranged outside the range 500 of the pile foundation test influence soil layer of the detected pile foundation 100, the anchors are not influenced by the loosening of soil around the pile foundation in the detection process, and the pile foundation bearing capacity detection is more accurate.
Preferably, the included angle between the main beam 201 and the secondary beam 203 is 30 ° to 45 °.
Preferably, the two distribution beams 202 are symmetrically placed at a distance of 2-2.5 m from the midpoint of the main beam 201.
Further, as shown in fig. 7, for the locking structure between the upper end of the anchor rod and various steel beams, the pull-press composite anchor rod comprises a reinforcement body 301 and a steel sleeve 304, the lower end of the reinforcement body 301 is fixed on the ground, the upper end of the reinforcement body 301 passes through the end part of the main beam 201 and then passes through a steel backing plate 102 and then is locked and fixed by the steel sleeve 304, so that the locking and fixing between the anchor rod and the main beam are realized, and the upper end of the reinforcement body 301 passes through the end part of the secondary beam 203 and then passes through a steel backing plate 102 and then is locked and fixed by the steel sleeve 304, so that the locking and fixing between the anchor rod and the secondary beam are realized.
Further, as shown in fig. 6, the pull-press composite anchor rod further includes a PVC sleeve 303, a pressure-bearing body 305 and a steel sleeve 304, the reinforcement 301 is sleeved with the PVC sleeve 303 at a portion below the ground, and the pressure-bearing body 305 is fixed at the bottom of the PVC sleeve 303.
The concrete process of installing the pull-press composite anchor rod 300 in the stratum comprises the steps of punching holes in the stratum to form drilled holes 302, installing a pressure-bearing body 305 at the lower end of a steel bar body 301, sleeving a PVC sleeve 303 on the steel bar body 301, enabling the lower surface of the PVC sleeve 303 to be in contact with the upper surface of the pressure-bearing body 305, pouring concrete on the surface of the stratum to enable the upper surface of the PVC sleeve 303 to be in full contact with the concrete, enabling the lower portion of the pull-press composite anchor rod 300 to be completely fixed with the stratum, and enabling the pull-press composite anchor rod 300 to have good tensile capacity and compression resistance.
Preferably, the length of the exposed ground of the reinforcement body 301 of the pull-press composite anchor rod is 1.5-2 m.
Preferably, the main beam 201 is two cross beams symmetrically arranged front and back, so that the main beam has better bearing capacity.
Specifically, as shown in fig. 7, the middle of the steel backing plate 102 is provided with a hole, so that the installation is convenient.
The detection method based on the pile foundation bearing capacity detection device comprises the following steps:
Firstly, constructing and driving the pulling and pressing composite anchor rod 300 into a stratum according to the positioning before the bearing capacity of the pile foundation 100 is detected, paying attention to reserving enough length of the pulling and pressing composite anchor rod 300 to expose the ground during construction so as to be fixed at a later stage, and assembling an upper device after the construction of the pulling and pressing composite anchor rod 300 is completed and the designed bearing capacity is achieved;
laying a steel backing plate 102 on the top of the pile foundation 100, and placing an oil jack 101 on the steel backing plate 102;
Placing a steel backing plate 102 on the oil jack 101 and hoisting a main beam 201, wherein the position of the pull-press composite anchor rod 300 is noted during hoisting;
Hoisting the distribution beam 202 on the main beam 201;
hoisting the secondary beam 203 on the distribution beam 202;
Step six, the ends of the secondary beams 203 and the ends of the main beams 201 are in locking connection with the upper ends of the corresponding pulling and pressing composite anchor rods 300;
And step seven, the hydraulic jack 101 applies pressure to the main beam 201 and the pile foundation 100, and the bearing capacity of the pile foundation 100 starts to be detected.
Further, in the first step, all the tension-compression composite anchors 300 are distributed on the same circle, so that anchor fixing points are outside the range 500 of the pile foundation test affected soil layer.
In summary, the pile foundation bearing capacity detection device provided by the utility model has the advantages that:
1. the main beam, the distribution beam and the secondary beam form a three-level counter-force beam structure, so that the bearing capacity requirement of a single counter-force beam on the anchor rod is obviously reduced, and the structural stability is better;
2. All the pulling and pressing composite anchor rods are far away from the pile foundation, so that soil looseness around the pile foundation does not affect the anchor rods in the process of detecting the bearing capacity of the pile foundation, the strength of the installation structure of the anchor rods is ensured, and the detection of the bearing capacity of the pile foundation is more accurate;
3. The steel beam and the anchor rod are combined, so that a strip stone is not required to be stacked, the occupied space is small, and the installation and the dismantling are convenient;
4. The device has adopted and has drawn compound high bearing capacity counter-force stock scheme of pressing, has higher guarantee to the security of device, and the stock in the device adopts circular arrangement scheme to arrange outside the scope of influence of pile foundation to be detected, guarantees that the stock can not receive the soil body around in the pile foundation testing process not hard up influence to can reduce the length of girder and distribution roof beam.
The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent changes made by the specification and drawings of the present utility model, or direct or indirect application in the relevant art, are included in the scope of the present utility model.
Claims (8)
1. The utility model provides a pile foundation bearing capacity detection device, its characterized in that includes steel backing plate (102), oil jack (101), girder (201), draws and presses compound stock (300), secondary beam (203) and distribution roof beam (202), and steel backing plate (102), oil jack (101), steel backing plate (102), girder (201) have been placed in proper order from bottom to top to the top of pile foundation (100), the both ends of girder (201) are passed through draw and press compound stock (300) to be fixed subaerial, secondary beam (203) have four, and with contained angle between girder (201) is the acute angle, and wherein two pairs secondary beam (203) symmetric distribution are in the front side and the rear side of girder (201) left end, and two other pairs secondary beam (203) symmetric distribution are in the front side and the rear side of girder (201) right-hand member place on girder (201) distribution roof beam (202), the pair secondary beam (203) are placed respectively at the both ends of distribution roof beam (202), the secondary beam (203) are passed through and are pressed compound roof beam (300) to be fixed subaerial.
2. Pile foundation bearing capacity detection device according to claim 1, characterized in that all the tension and compression composite bolts (300) are distributed on the same circle.
3. Pile foundation bearing capacity detection device according to claim 1 or 2, characterized in that the included angle between the main beam (201) and the secondary beam (203) is 30-45 °.
4. A pile foundation load bearing capacity detection device according to claim 3, characterized in that two distribution beams (202) are symmetrically placed at a distance of 2-2.5 m from the midpoint of the main beam (201).
5. Pile foundation bearing capacity detection device according to claim 1, characterized in that the pull-press composite anchor rod comprises a steel bar body (301) and a steel sleeve (304), wherein the lower end of the steel bar body (301) is fixed on the ground, the upper end of the steel bar body (301) penetrates through the end part of the main beam (201) and then penetrates through a steel backing plate (102) and then is locked and fixed by the steel sleeve (304), and the upper end of the steel bar body (301) penetrates through the end part of the secondary beam (203) and then penetrates through a steel backing plate (102) and then is locked and fixed by the steel sleeve (304).
6. Pile foundation bearing capacity detection device according to claim 5, characterized in that the pull-press composite anchor rod further comprises a PVC sleeve (303), a bearing body (305) and a steel sleeve (304), the steel reinforcement body (301) is sleeved with the PVC sleeve (303) on the part below the ground, and the bearing body (305) is fixed at the bottom of the PVC sleeve (303).
7. Pile foundation bearing capacity detection device according to claim 5 or 6, characterized in that the length of the exposed ground of the steel bar body (301) of the pull-press composite anchor rod is 1.5-2 m.
8. Pile foundation bearing capacity detection device according to claim 1, characterized in that the main beams (201) are two beams symmetrically arranged back and forth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421738667.7U CN223202395U (en) | 2024-07-22 | 2024-07-22 | Pile foundation bearing capacity detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421738667.7U CN223202395U (en) | 2024-07-22 | 2024-07-22 | Pile foundation bearing capacity detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN223202395U true CN223202395U (en) | 2025-08-08 |
Family
ID=96595230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202421738667.7U Active CN223202395U (en) | 2024-07-22 | 2024-07-22 | Pile foundation bearing capacity detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN223202395U (en) |
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2024
- 2024-07-22 CN CN202421738667.7U patent/CN223202395U/en active Active
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