CN119145477A - Device for detecting bearing capacity of pile foundation in limited space and implementation method - Google Patents
Device for detecting bearing capacity of pile foundation in limited space and implementation method Download PDFInfo
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- CN119145477A CN119145477A CN202411562454.8A CN202411562454A CN119145477A CN 119145477 A CN119145477 A CN 119145477A CN 202411562454 A CN202411562454 A CN 202411562454A CN 119145477 A CN119145477 A CN 119145477A
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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
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Abstract
The invention relates to the technical field of pile foundation bearing capacity detection, in particular to a limited space pile foundation bearing capacity detection device and an implementation method, comprising main beams, secondary beams, inclined strut cross frames, connecting steel frames, jacks, extension blocks, anchor rods and lifting frames, wherein the two groups of main beams are arranged, the upper parts of the two groups of main beams are connected through the connecting steel frames and the inclined strut cross frames, the secondary beams are arranged below the main beams, reinforcing steel is arranged inside the two sides of the secondary beams, the jacks are arranged below the secondary beams and are arranged on pile foundations, and extension blocks, driving motors and worms are arranged on the side surfaces of the main beams; the device has the beneficial effects that the device integrates the main beam, the secondary beam, the inclined strut cross frame, the connecting steel frame, the jack, the extension block, the anchor rod, the lifting frame and the like measuring components, successfully breaks through the space limitation, effectively detects the bearing capacity of the pile foundation, simultaneously reduces the lifting and shifting operation required by using the concrete load plate, and greatly saves the related mechanical and labor cost.
Description
Technical Field
The invention relates to the technical field of pile foundation bearing capacity detection, in particular to a limited space pile foundation bearing capacity detection device and an implementation method.
Background
The pile foundation is a deep foundation consisting of piles and pile caps (called caps for short) connected with the tops of the piles or a single pile foundation connected with the piles by the piles. If the pile body is buried in the soil, the bottom surface of the pile cap is contacted with the soil, the pile is called a low pile cap pile foundation, and if the pile body is exposed out of the ground and the pile cap bottom is positioned above the ground, the pile is called a high pile cap pile foundation. In high-rise buildings, pile foundations are widely used. After pile foundation construction is finished, a load test is required to be carried out on the pile foundation to detect the bearing capacity of the pile foundation, and in the prior art, the static and dynamic method is a pile foundation detection method which is convenient and fast to use and extremely efficient.
In the prior art, the working principle of the static and dynamic method is that a power device is arranged at the top of a pile foundation, and a movable part in the power device is in a high-speed rising state instantaneously through a strong reaction in the power device, and at the moment, the power device can apply a high-voltage recoil action to the pile foundation at the bottom of the power device, so that the effect of detecting the bearing capacity of the pile foundation is achieved.
However, because the occupied area of the concrete load plate required by the static load test is large, engineering detection of the limited space pile foundation in the urban updating project is inconvenient, and meanwhile, the dead weight of the weight unit is extremely large, when equipment detects one pile foundation and the whole machine is required to be moved to another pile foundation for detection, the equipment is extremely tedious and laborious, and the working efficiency of detecting the pile foundation bearing capacity of the equipment is greatly influenced.
Disclosure of Invention
The invention aims to provide a limited space pile foundation bearing capacity detection device and an implementation method thereof, so as to solve the problems in the background technology.
The invention provides a limited space pile foundation bearing capacity detection device which comprises main beams, secondary beams, inclined strut cross frames, a connecting steel frame, jacks, extension blocks, anchor rods and lifting frames, wherein two groups of main beams are arranged, the upper sides of the two groups of main beams are connected through the connecting steel frame and the inclined strut cross frames, the secondary beams are arranged below the main beams, reinforcing steel is arranged inside two sides of each secondary beam, the jacks are arranged below the secondary beams, and the jacks are arranged on pile foundations;
the side of girder is provided with epitaxial piece, driving motor and worm, and the below department at girder both ends is provided with the crane, and the crane setting is on the threaded rod, is fixed with the worm wheel on the threaded rod, and the bottom of crane is provided with the runner.
Preferably, the two ends of the connecting steel frames are fixed on the main beam through welding, a group of inclined strut cross frames are fixed between the two groups of connecting steel frames through welding, the two groups of inclined strut cross frames are symmetrically distributed about the central axis of the main beam, the main beam and the secondary beam are I-shaped steel, the output end of the jack is abutted against the secondary beam, displacement sensors are arranged on the two sides of the secondary beam, pile top steel plates are arranged on pile foundations, and the jack is arranged on the pile top steel plates.
Preferably, the two ends of the main beams are fixedly provided with the retaining plates through welding, the inside of the two ends of the main beams is provided with a driving motor, the driving motor is positioned at the outer sides of the two groups of main beams, the output end of the driving motor is fixedly connected with a worm, and the tail end of the worm is rotationally connected with the retaining plates.
Preferably, the main beam is fixedly provided with supporting plates, the supporting plates are positioned beside the worm, the supporting plates are provided with two groups of supporting plates which are symmetrically distributed about the worm, the two groups of supporting plates are rotationally connected to the upper half part of the threaded rod, the worm wheel is positioned between the two groups of supporting plates, and the worm wheel is matched with the worm.
Preferably, the lower half of the threaded rod is provided with threads, the bottom of the threaded rod is fixedly provided with a bottom block, the surface of the lifting frame is provided with threaded concave holes, and the threaded concave holes are matched with the threaded rod.
Preferably, the surface of the lifting frame is provided with guide holes, the guide holes are positioned beside the threaded concave holes, the bottom of the main beam is fixedly provided with guide rods, the guide rods are provided with two groups, the two groups of guide rods are symmetrically distributed about the threaded rod, and the outer wall of the guide rod is in sliding connection with the inner wall of the guide hole.
Preferably, the overall structure of the lifting frame is 7-shaped, an inner cavity is formed in the bottom of the lifting frame, a hack lever is fixed in the inner cavity, the rotating wheel is located in the inner cavity, and the rotating wheel is rotationally connected with the hack lever.
Preferably, the side of girder is provided with the extension piece, and the extension piece is equipped with two sets of, and two sets of extension pieces are about the axis symmetric distribution of girder, and the side of girder is fixed with the inserted bar, and the inserted bar extends to the outside of girder, and the surface through-hole and the jack of extension piece, inserted bar can insert in the jack, and the mounting hole has all been seted up on the surface of extension piece and girder, is equipped with the stud in the mounting hole, and the both sides of extension piece are fixed with the pressure plate, and the cross-section of pressure plate is trapezoidal, and the pressure plate can support tightly with the girder.
Preferably, a thick steel plate is arranged between the secondary beam and the main beams, the upper surfaces of the thick steel plates are welded and connected to the two groups of main beams, the secondary beam is welded and connected to the lower surfaces of the thick steel plates, reinforcing steel is fixedly welded on the inner portions of two sides of the secondary beam, a plurality of reinforcing steel are arranged on the secondary beam, and the reinforcing steel is distributed in an equidistant and linear mode on the secondary beam, and the interval distance is 10cm.
An implementation method of a limited space pile foundation bearing capacity detection device comprises the following steps:
s1, embedding anchor rods before concrete pouring of a bearing platform is carried out, wherein the positions of the anchor rods are consistent with the through holes on the extension blocks, and a jack is arranged at the central position of a pile foundation;
S2, starting a driving motor to drive a worm and a worm wheel to work, enabling a rotating wheel to contact the ground and enabling the whole device to ascend, and carrying out the whole traction device through traction equipment and moving the whole traction device to the position above the pile foundation;
s3, when the device is used for the first time, the anchor rod is inserted into the through hole correspondingly through the integral height of the driving motor adjusting device, the anchor rod and the extension block are fixed through welding, the driving motor is started, and the rotating wheel is far away from the ground;
and S4, continuously pressing the top of the jack to the secondary beam by starting the jack, simultaneously pressing the bottom of the jack to the pile foundation, and arranging a displacement sensor on the secondary beam, wherein the displacement sensor is connected with the intelligent terminal, is used for monitoring and recording displacement deformation and jack moment in real time and is used for collecting test process data of the graded loading of the pile foundation bearing capacity.
Compared with the prior art, the invention has the beneficial effects that:
Aiming at the challenge that the pile foundation engineering in urban updating projects is difficult to adopt the conventional concrete load plate to pile and carry out static load test due to the original structure limitation, the invention provides a limited space pile foundation bearing capacity detection device and an implementation method, which are developed, the device has integrated girder, secondary beam, bracing cross frame, has linked steelframe, jack, epitaxial piece, stock and crane etc. and has measured the subassembly, has successfully broken through the space limitation, effectively detects pile foundation bearing capacity, has avoided simultaneously the required handling of use concrete load board and has shifted the operation, has saved relevant machinery and cost of labor by a wide margin.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the main beam structure of the present invention;
FIG. 3 is a schematic diagram of an epitaxial block structure of the present invention;
FIG. 4 is a schematic view of a structure of a lifting frame according to the present invention;
FIG. 5 shows the present invention a threaded rod structure schematic diagram;
FIG. 6 is a top plan view of the structure of the present invention;
Fig. 7 is a schematic view of the secondary beam structure of the present invention.
In the figure, 1, an anchor rod, 2, a diagonal bracing cross frame, 3, a connecting steel frame, 4, a bearing plate, 5, an extension block, 6, a jack, 7, a pile top steel plate, 8, reinforced steel, 9, a pile foundation, 10, a secondary beam, 11, a rotating wheel, 12, a lifting frame, 13, a threaded rod, 14, a worm wheel, 15, a main beam, 16, a guide rod, 17, an inserting rod, 18, a stud bolt, 19, a driving motor, 20, a supporting plate, 21, a worm, 22, a through hole, 23, an inserting hole, 24, a mounting hole, 25, a pressing plate, 26, a bottom block, 27, a threaded concave hole, 28, a guide hole, 29, an inner cavity, 30, a hack lever, 31 and a displacement sensor.
Detailed Description
For purposes of brevity and description, the principles of the embodiments are described primarily by reference to examples. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the embodiments. It will be apparent, however, to one of ordinary skill in the art that the embodiments may be practiced without limitation to these specific details. In some instances, well-known methods and structures have not been described in detail so as not to unnecessarily obscure the embodiments. In addition, all embodiments may be used in combination with each other.
Referring to fig. 1 to 7, the invention provides a device for detecting the bearing capacity of a limited space pile foundation 9, which comprises a main beam 15, a secondary beam 10, a diagonal bracing cross frame 2, a connecting steel frame 3, a jack 6, an extension block 5, an anchor rod 1 and a lifting frame 12, wherein the main beam 15 is provided with two groups, the upper parts of the two groups of main beams 15 are connected with the diagonal bracing cross frame 2 through the connecting steel frame 3, the secondary beam 10 is arranged below the main beam 15, reinforcing steel 8 is arranged inside two sides of the secondary beam 10, the jack 6 is arranged below the secondary beam 10, and the jack 6 is arranged on the pile foundation 9;
The device comprises a main beam 15, an extension block 5, a driving motor 19 and a worm 21 are arranged on the side surface of the main beam 15, a lifting frame 12 is arranged below two ends of the main beam 15, the lifting frame 12 is arranged on a threaded rod 13, a worm wheel 14 is fixed on the threaded rod 13, a rotating wheel 11 is arranged at the bottom of the lifting frame 12, and the device and the implementation method for detecting the bearing capacity of the limited space pile foundation 9 comprise the device for detecting the bearing capacity of the limited space pile foundation 9;
When the device is used, the main beam 15, the secondary beam 10, the inclined strut cross frame 2, the connecting steel frame 3, the jack 6, the extension block 5, the anchor rod 1, the lifting frame 12 and the like are integrated, so that the space limitation is successfully broken through, the bearing capacity of the pile foundation 9 is effectively detected, meanwhile, the lifting and shifting operation required by using the concrete load plate is avoided, and the related mechanical and labor cost is greatly saved.
On the basis of the first embodiment, two ends of a connecting steel frame 3 are fixed on a main beam 15 through welding, a group of diagonal bracing cross frames 2 are fixed between the two groups of connecting steel frames 3 through welding, the diagonal bracing cross frames 2 are provided with two groups, the two groups of diagonal bracing cross frames 2 are symmetrically distributed about the central axis of the main beam 15, the main beam 15 and a secondary beam 10 are I-shaped steel, the output end of a jack 6 is abutted against the secondary beam 10, displacement sensors 31 are arranged on two sides of the secondary beam 10, pile foundation 9 is provided with pile top steel plates 7, and the jack 6 is arranged on the pile top steel plates 7;
When the intelligent pile foundation 9 is used, the two groups of connecting steel frames 3 are matched with one group of inclined strut cross frames 2, the stability of the two groups of main beams 15 is improved, the influence on experimental data caused by the relative displacement of the two groups of main beams 15 is prevented, the jack 6 is connected with the hydraulic pump, the pile top counter pressure is controlled through the hydraulic pump and is timely transmitted to the intelligent terminal so as to control, monitor and record the counter pressure, the displacement sensor 31 is arranged to be a grid type, the displacement sensor 31 is connected with the intelligent terminal, the displacement deformation and the moment of the jack 6 are monitored and recorded in real time, and a line graph is intelligently generated for collecting experimental process data of the graded loading of the bearing capacity of the pile foundation 9;
The two ends of the main beams 15 are fixedly provided with the retaining plates 4 through welding, the inside of the two ends of the main beams 15 is provided with the driving motor 19, the driving motor 19 is positioned at the outer sides of the two groups of main beams 15, the output end of the driving motor 19 is fixedly connected with the worm 21, the tail end of the worm 21 is rotationally connected with the retaining plates 4, the main beams 15 are fixedly provided with the supporting plates 20, the supporting plates 20 are positioned beside the worm 21, the supporting plates 20 are provided with two groups, the two groups of supporting plates 20 are symmetrically distributed about the worm 21, the upper half parts of the threaded rods 13 are rotationally connected on the two groups of supporting plates 20, the worm wheel 14 is positioned between the two groups of supporting plates 20, and the worm wheel 14 is matched with the worm 21;
The lower half part of the threaded rod 13 is provided with threads, the bottom of the threaded rod 13 is fixedly provided with a bottom block 26, the surface of the lifting frame 12 is provided with a threaded concave hole 27, the threaded concave hole 27 is matched with the threaded rod 13, the surface of the lifting frame 12 is provided with a guide hole 28, the guide hole 28 is positioned beside the threaded concave hole 27, the bottom of the main beam 15 is fixedly provided with guide rods 16, the guide rods 16 are provided with two groups, the two groups of guide rods 16 are symmetrically distributed about the threaded rod 13, and the outer wall of the guide rods 16 is in sliding connection with the inner wall of the guide hole 28;
During the use, through starting driving motor 19, driving motor 19's output will drive worm 21 and rotate, and then make worm wheel 14 rotate, and then drive threaded rod 13 and rotate, and the crane 12 that threaded rod 13 carries out the spiro union will remove, adjust runner 11's position from this, make things convenient for adjusting device overall height, and it is whole to conveniently utilize draw gear to carry out mobile device, wherein, the guide bar 16 that sets up corresponds and slides in guiding hole 28 duration, can provide the restriction for crane 12, avoid crane 12 to take place the skew, guarantee runner 11's stability, will support when crane 12 moves to the bottom of threaded rod 13 in bottom piece 26, bottom piece 26 that the threaded rod 13 bottom set up prevents crane 12 from coming off from threaded rod 13 below.
On the basis of the second embodiment, the side surface of the main beam 15 is provided with the extension blocks 5, the extension blocks 5 are provided with two groups, the two groups of extension blocks 5 are symmetrically distributed about the central axis of the main beam 15, the side surface of the main beam 15 is fixedly provided with the inserting rods 17, the inserting rods 17 extend to the outer side of the main beam 15, the surface through holes 22 and the inserting holes 23 of the extension blocks 5 are formed in the inserting holes 23, the surfaces of the extension blocks 5 and the main beam 15 are provided with mounting holes 24, the mounting holes 24 are internally provided with stud bolts 18, the two sides of the extension blocks 5 are fixedly provided with pressing plates 25, the section of each pressing plate 25 is trapezoid, and the pressing plates 25 can be abutted against the main beam 15;
When the device is used for the first time, the inserting rod 17 is required to be inserted into the inserting hole 23 and welded and fixed, after measurement is completed, the anchor rod 1 is required to be cut, the anchor rod 1 below the extension speed is cut off, then the starting motor is started again, the rotating wheel 11 is contacted with the ground, the whole device is convenient to move onto the next pile foundation 9, then the anchor rod 1 at the position of the pile foundation 9 to be measured is abutted against the lower surface of the extending block 5 and fixed through welding, after the extending block 5 is subjected to multiple welding operations, the extending block 5 can be replaced in time, the construction efficiency is improved, the device is particularly operated to realize the removal of the extending block 5, move the new extending block 5, enable the inserting hole 23 corresponding to the inserting rod 17 to be continuously pushed, enable the extending block 5 and the pressing plate 25 to be embedded into the inner side of the main beam 15, enable the mounting hole 24 of the main beam 15 to be corresponding to the mounting hole 24 of the extending block 5 to be convenient to carry out the mounting of the stud 18, and the pressing plate 25 can be arranged, and the contact area of the main beam 5 can be improved when the extending block 25 and the measuring area of the main beam 15 are improved;
a thick steel plate is arranged between the secondary beam 10 and the main beams 15, the upper surfaces of the thick steel plates are welded and connected to the two groups of main beams 15, the secondary beam 10 is welded and connected to the lower surfaces of the thick steel plates, reinforcing steel 8 is fixed inside two sides of the secondary beam 10 through welding, a plurality of reinforcing steel 8 are arranged, the reinforcing steel 8 are distributed on the secondary beam 10 in an equidistant and linear mode, and the interval distance is 10cm;
when the novel lifting jack is used, a thick steel plate is added between the secondary girder 15 and the secondary girder 10, the thickness of the thick steel plate is 2cm, the stability of the secondary girder 10 and the main girder 15 when the lifting jack 6 applies force is improved, and meanwhile, the two sides of the secondary girder 10 are welded with a plurality of reinforcing steels 8 which are uniformly distributed, so that the stability of the secondary girder 10 is ensured, and the influence on the detection result due to the deformation of the flanges of the secondary girder 10 is prevented.
During actual use, the anchor rod 1 is pre-buried before the concrete pouring of the bearing platform is carried out, the driving motor 19 is started, the worm 21 and the worm wheel 14 are driven to work, the rotating wheel 11 is enabled to contact the ground, the whole device is enabled to ascend, the traction device is enabled to integrally move to the upper portion of the pile foundation 9 through traction equipment, the anchor rod 1 and the extension block 5 are welded and fixed, the height of the rotating wheel 11 is adjusted, the rotating wheel 11 is enabled to move out of the ground, the jack 6 is started, the top of the jack 6 continuously presses the secondary beam 10, meanwhile, the bottom of the jack 6 presses the pile foundation 9, the displacement sensor 31 is arranged on the secondary beam 10 and connected with an intelligent terminal, displacement deformation and moment of the jack 6 are monitored in real time, and used for collecting test process data of the bearing capacity of the pile foundation 9 in a grading mode, and the problems that the occupied area of a concrete load plate required by static load test is large, engineering detection of the pile foundation 9 is inconvenient to be carried out in a limited space in an urban updating project, the dead weight unit is extremely large, when the equipment detects the pile foundation 9, the pile foundation 9 needs to be moved to another 9, and the detection efficiency is very complex, and the bearing capacity of the equipment is greatly affected are greatly.
The implementation method of the bearing capacity detection device of the limited space pile foundation 9 comprises the following steps:
S1, embedding an anchor rod 1 before carrying out bearing platform concrete pouring, wherein the position of the anchor rod 1 is consistent with a through hole 22 on an extension block 5, and a jack 6 is arranged at the central position of a pile foundation 9;
S2, starting a driving motor 19 to drive a worm 21 and a worm wheel 14 to work, enabling a rotating wheel 11 to contact the ground and enabling the whole device to ascend, and carrying out the whole traction device through traction equipment and moving the traction device to the position above the pile foundation 9;
S3, when the device is used for the first time, the whole height of the device is adjusted through the driving motor 19, the anchor rod 1 is correspondingly inserted into the through hole 22, the anchor rod 1 and the extension block 5 are fixed through welding, the driving motor 19 is started, and the rotating wheel 11 is far away from the ground;
And S4, continuously pressing the top of the jack 6 to the secondary beam 10 by starting the jack 6, simultaneously pressing the bottom of the jack 6 to the pile foundation 9, and arranging a displacement sensor 31 on the secondary beam 10, which is connected with an intelligent terminal, so as to monitor and record the displacement deformation and the moment of the jack 6 in real time and collect test process data of the graded loading of the bearing capacity of the pile foundation 9.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The limited space pile foundation bearing capacity detection device is characterized by comprising main beams (15), secondary beams (10), inclined strut cross frames (2), a connecting steel frame (3), jacks (6), an extension block (5), anchor rods (1) and lifting frames (12), wherein two groups of main beams (15) are arranged, the upper parts of the two groups of main beams (15) are connected through the connecting steel frame (3) and the inclined strut cross frames (2), the secondary beams (10) are arranged below the main beams (15), reinforcing steel (8) are arranged inside two sides of each secondary beam (10), the jacks (6) are arranged below each secondary beam (10), and the jacks (6) are arranged on pile foundations (9);
The lifting device comprises a main beam (15), wherein an extension block (5), a driving motor (19) and a worm (21) are arranged on the side face of the main beam (15), lifting frames (12) are arranged below two ends of the main beam (15), the lifting frames (12) are arranged on threaded rods (13), worm wheels (14) are fixed on the threaded rods (13), and rotating wheels (11) are arranged at the bottoms of the lifting frames (12).
2. The limited space pile foundation bearing capacity detection device according to claim 1, wherein two ends of the connecting steel frames (3) are fixed on the main beam (15) through welding, a group of diagonal bracing cross frames (2) are fixed between the two groups of connecting steel frames (3) through welding, the diagonal bracing cross frames (2) are provided with two groups, the two groups of diagonal bracing cross frames (2) are symmetrically distributed about the central axis of the main beam (15), the main beam (15) and the secondary beam (10) are I-shaped steel, the output end of the jack (6) is abutted against the secondary beam (10), displacement sensors (31) are arranged on two sides of the secondary beam (10), pile foundation (9) is provided with pile top steel plates (7), and the jack (6) is arranged on the pile top steel plates (7).
3. The limited space pile foundation bearing capacity detection device according to claim 1, wherein the two ends of the main beams (15) are fixedly provided with the retaining plates (4) through welding, the driving motors (19) are installed in the two ends of the main beams (15), the driving motors (19) are located on the outer sides of the two groups of main beams (15), the output ends of the driving motors (19) are fixedly connected with worms (21), and the tail ends of the worms (21) are rotatably connected with the retaining plates (4).
4. The limited space pile foundation bearing capacity detection device according to claim 1, wherein the main beam (15) is fixedly provided with supporting plates (20), the supporting plates (20) are positioned beside the worm (21), the supporting plates (20) are provided with two groups, the two groups of supporting plates (20) are symmetrically distributed about the worm (21), the two groups of supporting plates (20) are rotationally connected to the upper half part of the threaded rod (13), the worm wheel (14) is positioned between the two groups of supporting plates (20), and the worm wheel (14) is matched with the worm (21).
5. The limited space pile foundation bearing capacity detection device according to claim 1, wherein threads are formed in the lower half portion of the threaded rod (13), a bottom block (26) is fixed to the bottom of the threaded rod (13), threaded concave holes (27) are formed in the surface of the lifting frame (12), and the threaded concave holes (27) are matched with the threaded rod (13).
6. The limited space pile foundation bearing capacity detection device according to claim 1, wherein guide holes (28) are formed in the surface of the lifting frame (12), the guide holes (28) are located beside the threaded concave holes (27), guide rods (16) are fixed to the bottom of the main beam (15), two groups of the guide rods (16) are arranged, the two groups of the guide rods (16) are symmetrically distributed about the threaded rod (13), and the outer wall of the guide rods (16) is in sliding connection with the inner wall of the guide holes (28).
7. The device for detecting the bearing capacity of the pile foundation in the limited space according to claim 1, wherein the lifting frame (12) is 7-shaped in overall structure, an inner cavity (29) is formed in the bottom of the lifting frame (12), a hack lever (30) is fixed in the inner cavity (29), the rotating wheel (11) is located in the inner cavity (29), and the rotating wheel (11) is rotatably connected with the hack lever (30).
8. The limited space pile foundation bearing capacity detection device according to claim 1, wherein the lateral surface of the main beam (15) is provided with extension blocks (5), the extension blocks (5) are provided with two groups, the two groups of extension blocks (5) are symmetrically distributed about the central axis of the main beam (15), the lateral surface of the main beam (15) is fixedly provided with a plug rod (17), the plug rod (17) extends to the outer side of the main beam (15), the surface through hole (22) and the jack (23) of the extension block (5), the plug rod (17) can be inserted into the jack (23), the surfaces of the extension block (5) and the main beam (15) are provided with mounting holes (24), the mounting holes (24) are internally provided with stud bolts (18), two sides of the extension block (5) are fixedly provided with pressing plates (25), the cross sections of the pressing plates (25) are trapezoid, and the pressing plates (25) can be abutted against the main beam (15).
9. The limited space pile foundation bearing capacity detection device according to claim 1, wherein a thick steel plate is arranged between the secondary beams (10) and the main beams (15), the upper surfaces of the thick steel plates are welded and connected to the two groups of main beams (15), the secondary beams (10) are welded and connected to the lower surfaces of the thick steel plates, reinforcing steel (8) are fixed inside two sides of each secondary beam (10) through welding, the reinforcing steel (8) is provided with a plurality of reinforcing steel (8), the reinforcing steel (8) are distributed on the secondary beams (10) in an equidistant and linear mode, and the interval distance is 10cm.
10. The implementation method of the limited space pile foundation bearing capacity detection device according to any one of claims 1-9, which is characterized by comprising the following steps:
S1, embedding an anchor rod (1) before carrying out bearing platform concrete pouring, wherein the position of the anchor rod (1) is consistent with a through hole (22) on an extension block (5), and a jack (6) is arranged at the central position of a pile foundation (9);
S2, starting a driving motor (19) to drive a worm (21) and a worm wheel (14) to work, so that a rotating wheel (11) contacts the ground and the whole device ascends, and carrying out the whole traction device through traction equipment and moving the whole traction device to the position above the pile foundation (9);
s3, when the device is used for the first time, the whole height of the device is adjusted through the driving motor (19), the anchor rod (1) is correspondingly inserted into the through hole (22), the anchor rod (1) and the extension block (5) are fixed through welding, the driving motor (19) is started, and the rotating wheel (11) is far away from the ground;
And S4, continuously pressing the top of the jack (6) to the secondary beam (10) by starting the jack (6), simultaneously pressing the bottom of the jack (6) to the pile foundation (9), and connecting a displacement sensor (31) arranged on the secondary beam (10) with an intelligent terminal to monitor and record displacement deformation and moment of the jack (6) in real time, wherein the displacement sensor is used for collecting test process data of the bearing capacity grading loading of the pile foundation (9).
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| CN215262775U (en) * | 2021-05-24 | 2021-12-21 | 承德中天建设工程检测试验有限公司 | Stock detects counterforce device |
| CN219732100U (en) * | 2022-12-27 | 2023-09-22 | 云南煜展建设工程检测有限公司 | Foundation pile bearing capacity experiment table |
| CN220184107U (en) * | 2023-03-10 | 2023-12-15 | 中冶武勘工程技术有限公司 | Pile foundation horizontal bearing capacity detection device |
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2024
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| CN211312622U (en) * | 2019-07-29 | 2020-08-21 | 威海宏成建筑工程质量检测有限公司 | Foundation pile bearing capacity detection device |
| CN211057884U (en) * | 2019-09-25 | 2020-07-21 | 郑州大学建设工程质量研究检测有限公司 | Vertical resistance to compression static load test device of pile foundation |
| CN212052909U (en) * | 2020-03-05 | 2020-12-01 | 安徽安舜水利建设工程有限公司 | Integrated hydraulic workstation for static load test of building foundation |
| CN215262775U (en) * | 2021-05-24 | 2021-12-21 | 承德中天建设工程检测试验有限公司 | Stock detects counterforce device |
| CN219732100U (en) * | 2022-12-27 | 2023-09-22 | 云南煜展建设工程检测有限公司 | Foundation pile bearing capacity experiment table |
| CN220184107U (en) * | 2023-03-10 | 2023-12-15 | 中冶武勘工程技术有限公司 | Pile foundation horizontal bearing capacity detection device |
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