CN112502199A

CN112502199A - Foundation bearing capacity detection device

Info

Publication number: CN112502199A
Application number: CN202011308694.7A
Authority: CN
Inventors: 程围峰; 何鹏; 徐显政
Original assignee: Zhejiang Bonnie Construction Testing Co ltd
Current assignee: Zhejiang Bonnie Construction Testing Co ltd
Priority date: 2020-11-19
Filing date: 2020-11-19
Publication date: 2021-03-16
Anticipated expiration: 2040-11-19
Also published as: CN112502199B

Abstract

The application discloses foundation bearing capacity detection device relates to building technical field. Technical scheme is a foundation bearing capacity detection device, including the bearing plate, perpendicular fixedly connected with depression bar on the bearing plate, the depression bar deviates from the perpendicular fixedly connected with of one end of bearing plate connects the disc, still cup jointed one section stand pipe on the depression bar, just the depression bar with stand pipe sliding connection, the outer wall of stand pipe is fixedly connected with support still, the bottom surface of support with the bottom surface of bearing plate is held level, be provided with on the support and be used for the drive the power device that the depression bar pushed down, power device be provided with a plurality ofly and with the depression bar sets up as centre of a circle symmetry. The counter weight is saved, and the counter weight is prevented from moving and stacking, so that the operation is simpler.

Description

Foundation bearing capacity detection device

Technical Field

The application relates to the technical field of buildings, in particular to a foundation bearing capacity detection device.

Background

The bearing capacity of the foundation is the bearing potential exerted along with the increase of the load on the unit area of the foundation soil, and the common unit KPa is a comprehensive word for evaluating the stability of the foundation. It should be noted that the bearing capacity of the foundation is a practical term for foundation design to facilitate evaluation of the strength and stability of the foundation, and is not a basic property index of soil. The shear strength theory of soil is the theoretical basis for researching and determining the bearing capacity of the foundation.

For example, chinese patent publication No. CN208668482U discloses a foundation bearing capacity detecting device, which includes a secondary beam, a loading main beam, an anchor block, a connecting chain, a connector, a test pile and a jack; the top of the secondary beam is used for placing the stacking load, the secondary beam is arranged at the top of the loading main beam, the loading main beam is arranged at the top of the jack, and the jack is arranged at the top of the test pile; the anchor blocks are symmetrically arranged two, the two anchor blocks are arranged at two end portions of the loading main beam respectively, one end of the connecting chain is connected with the anchor blocks, and the other end of the connecting chain is connected with the steel bars on the anchor piles through the connectors.

In the above related art, when detection is performed, a counterweight needs to be stacked on the top of the secondary beam, and the corresponding settlement condition is loaded and determined step by step, but the counterweight is heavy and the stacking is troublesome.

Disclosure of Invention

In order to improve the situation that the detection is troublesome because a counterweight needs to be stacked, the application provides a foundation bearing capacity detection device.

The application provides a foundation bearing capacity detection device adopts following scheme:

the utility model provides a foundation bearing capacity detection device, includes the bearing plate, perpendicular fixedly connected with depression bar on the bearing plate, the depression bar deviates from the perpendicular fixedly connected with of one end of bearing plate connects the disc, one section stand pipe has still been cup jointed on the depression bar, just the depression bar with stand pipe sliding connection, the outer wall of stand pipe is fixedly connected with support still, the bottom surface of support with the bottom surface of bearing plate is held level, be provided with on the support and be used for the drive the power device that the depression bar pushed down, power device be provided with a plurality ofly and with the depression bar sets up as centre of a circle symmetry.

Through adopting above-mentioned scheme, clear up ground earlier when detecting, then place the device on the ground after the clearance, power device starts for the depression bar pushes down, the depression bar is used on the bearing plate, thereby provide an enough pressure and push down for the bearing plate, under the effect of constant force, last required time, then measure the height that the bearing plate subsides, thereby correspondingly measure the bearing capacity of ground, this device need not to stack the counter weight step by step, thereby the condition that needs the counter weight of other side when having improved the detection.

The application is further configured to: the power device is including connecting force application steel cable on the connection disc to and rotate and connect and be in switching-over pulley on the support, force application steel cable transmission is connected switching-over pulley is last and is the U type setting, still be fixed with hydraulic jack on the support, hydraulic jack's ejector pin is vertical up, the force application steel cable deviates from the one end of connection disc connect in hydraulic jack's ejector pin tip.

Through adopting above-mentioned scheme, hydraulic jack work, hydraulic jack's ejector pin upwards pushes up to with the one end pull-up of application of force steel cable, through the effect of switching-over pulley, make the application of force steel cable connect in the one end pull-down of connecting the disc, thereby make the depression bar that links to each other with the connection disc receive a decurrent power.

The application is further configured to: the tip fixedly connected with joint pole of application of force steel cable, be provided with on the connection disc along its radial logical groove that sets up, it is located to lead to the groove the one end at connection disc edge link up, just the upper surface of connection disc still be provided with lead to groove vertically crossing's draw-in groove, the application of force steel cable is followed lead to the inslot and pass, just the joint pole inlay card is in the draw-in groove.

Through adopting above-mentioned scheme, because power device is provided with many pairs, according to the measuring needs, need select different quantity power device to use in order to provide decurrent pulling force on connecting the disc, go into the application of force steel cable from leading to the groove card this moment, then go into the draw-in groove with the joint rod card of application of force steel cable tip in to make the application of force steel cable can provide a decurrent pulling force for connecting the disc.

The application is further configured to: the support includes chassis and vertical slot frame that fixed connection is in the same place, hydraulic jack fixes on the chassis and be located in the vertical slot frame, sliding connection has the slider of oscilaltion in the vertical slot frame, the application of force steel cable deviates from the one end of connecting the disc is fixed on the slider, hydraulic jack's ejector pin top is moved the slider goes up and down.

Through adopting above-mentioned scheme, when directly connecting the application of force steel cable at hydraulic jack's ejector pin tip, the application of force steel cable is to hydraulic jack's reaction force, leads to hydraulic jack's ejector pin to take place the bending easily, so set up the slider for the reaction force of application of force steel cable is acted on the slider.

The application is further configured to: the winding device is characterized in that a winding drum is rotatably connected onto the sliding block, the winding drum penetrates through the sliding block, one end, deviating from the connecting disc, of the force application steel cable is fixed onto the outer wall of the winding drum, a pawl is hinged onto the sliding block, a circle of ratchets are arranged on the outer wall of the winding drum along the circumferential direction of the winding drum, and the pawl abuts against the ratchets.

Through adopting above-mentioned scheme, set up the receipts section of thick bamboo and carry out the rolling to application of force steel cable to make application of force steel cable's effect length can adjust, thereby change the biggest drop-down distance of hydraulic jack during operation application of force steel cable.

The application is further configured to: the sliding blocks are fixedly connected with fixing frames, and the sliding blocks are fixedly connected with the fixing frames.

Through adopting above-mentioned scheme, adopt fixed frame all fixed together with each slider to make each slider synchronous lifting, make each application of force steel cable to the pull-down degree of connecting the disc the same.

The application is further configured to: the outer wall of each winding drum is also coaxially and fixedly connected with a transmission gear, each winding drum is also supported with a driving ring, the upper surface and the lower surface of each driving ring are both provided with teeth and meshed with the transmission gear, the fixed frame is fixed with a driving motor, a rotating shaft of the driving motor is coaxially and fixedly connected with a driving gear, and the driving gear is meshed with the teeth on the upper surface of the driving ring.

Through adopting above-mentioned scheme, driving motor during operation, the driving gear takes place to rotate to make the drive ring take place to rotate, the drive ring drives drive gear and rotates, and each winding section of thick bamboo takes place to rotate in step and carries out the rolling or unreel in order to the application of force steel cable.

The application is further configured to: the outer edge of the support is fixedly connected with a reinforcing steel cable, and one end of the reinforcing steel cable, which deviates from the support, is fixedly connected with a reinforcing pile used for driving into the soil.

Through adopting above-mentioned scheme, adopt and consolidate steel cable and reinforcing pile and consolidate the support, avoid the depression bar to push down in order to detect the time, the support is lifted up because of reaction force.

The application is further configured to: and a pressure sensor is arranged between the connecting disc and the pressure rod, and the pressure rod is provided with observation scales.

By adopting the scheme, the pressure sensor is convenient to measure the pressure when the pressure rod is pressed down, and the settlement depth of the pressure bearing plate when the pressure bearing plate is pressed can be directly reflected by observing the scales.

In summary, the present application has the following beneficial effects: the counter weight does not need to be stacked step by step for detection, so that the detection is more convenient.

Drawings

FIG. 1 is a schematic view of the overall structure of the embodiment;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is an enlarged view of portion B of FIG. 1;

fig. 4 is a sectional view of the overall structure of the embodiment.

Reference numerals: 1. a pressure bearing plate; 2. a pressure lever; 3. connecting the disks; 4. a guide tube; 5. a support; 6. a power plant; 7. a force application steel cable; 8. a diverting pulley; 9. a hydraulic jack; 10. a clamping and connecting rod; 11. a through groove; 12. a card slot; 13. a chassis; 14. a vertical slot frame; 15. a slider; 16. winding the roll; 17. a pawl; 18. a ratchet; 19. a fixing frame; 20. a transmission gear; 21. a drive ring; 22. a drive motor; 23. a driving gear; 24. reinforcing a steel cable; 25. reinforcing piles; 26. a pressure sensor.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses a foundation bearing capacity detection device, which is shown by combining a figure 1 and a figure 4 and comprises a bearing plate 1 which is horizontally arranged, wherein the bearing plate 1 in the embodiment is round, a compression bar 2 is vertically and fixedly connected to the center of the upper surface of the bearing plate 1, the compression bar 2 is a round bar, the bearing plate 1 and the round bar are integrally arranged, and an observation scale which is arranged along the axial direction of the compression bar 2 is arranged on the compression bar 2; the top of the pressure rod 2 is fixedly connected with a pressure sensor 26, a connecting disc 3 is fixedly connected above the pressure sensor 26, and the connecting disc 3 is horizontally arranged and is coaxial with the pressure rod 2; still cup jointed one section stand pipe 4 on the depression bar 2, stand pipe 4 and 2 sliding connection of depression bar, depression bar 2 can reciprocate in stand pipe 4, and fixedly connected with support 5 on the outer wall of stand pipe 4, when the upper surface butt stand pipe 4 of bearing plate 1, the lower surface of bearing plate 1 is leveled with the lower surface of support 5, be provided with power device 6 on support 5 in order to draw down and connect disc 3, power device 6 is provided with a plurality ofly and uses depression bar 2 as centre of a circle central symmetry setting.

Referring to fig. 1 and 2, in the present embodiment, four through grooves 11 are provided on the connecting disc 3, the four through grooves 11 are disposed along the radial direction of the connecting disc 3 and are evenly spaced apart, one end of each through groove 11 located at the edge of the connecting disc 3 is through, a clamping groove 12 is provided on the upper surface of the connecting disc 3, one clamping groove 12 is provided corresponding to each through groove 11, and the clamping grooves 12 are disposed perpendicularly and crosswise to the through grooves 11.

In this embodiment, four power devices 6 are correspondingly arranged, each power device 6 includes one force application steel cable 7, one end of each force application steel cable 7 is fixedly connected with one clamping rod 10, each clamping rod 10 is clamped and embedded in one clamping groove 12, and each force application steel cable 7 penetrates through the through groove 11 from top to bottom; the bracket 5 comprises a bottom frame 13 and a vertical groove frame 14, wherein the bottom frame 13 is disc-shaped, the vertical groove frame 14 is two guide rails vertically welded on the bottom frame 13, and the upper ends of the two guide rails are fixed with a plate for limiting through bolts; the power device 6 further comprises a reversing pulley 8 rotationally connected to the support 5 and a hydraulic jack 9 fixed on the bottom frame 13, a rotating seat is welded on the upper surface of the bottom frame 13, the reversing pulley 8 is rotationally connected to the rotating seat, the hydraulic jack 9 is arranged between the two guide rails, an ejector rod of the hydraulic jack 9 is vertically upward, the two vertical guide rails are further connected with a sliding block 15 in a sliding manner, the end part of the ejector rod of the hydraulic jack 9 is welded with the sliding block 15, a through hole transversely penetrating through the sliding block 15 is further formed in the sliding block 15, a winding drum 16 rotationally connected with the sliding block 15 penetrates through the through hole, a rolling bearing is arranged between the winding drum 16 and the sliding block 15, the force application steel cable 7 is in transmission connection with the reversing pulley 8 after penetrating through the through groove 11 and is changed in direction through the reversing pulley 8, one end of the force application steel cable 7 is fixedly connected to the outer wall of the, at this time, the entire urging cable 7 is U-shaped.

As shown in fig. 1 and 3, the slider 15 is further hinged with a pawl 17, a circle of ratchets 18 arranged along the circumferential direction of the winding drum 16 is arranged on the outer wall of the winding drum 16, and the pawl 17 abuts against the ratchets 18 to prevent the force application cable 7 wound on the winding drum 16 from unwinding due to force.

A fixed frame 19 is also welded on one side of the sliding blocks 15, which is opposite to the winding drum 16 for winding the force application steel cable 7, the fixed frame 19 is circular, and each sliding block 15 is welded on the fixed frame 19; a transmission gear 20 is coaxially and fixedly connected to the outer wall of one end of the winding drum 16 close to the fixed frame 19, a driving ring 21 is engaged on the transmission gear 20, the driving ring 21 is supported by each winding drum 16, the upper surface and the lower surface of the driving ring 21 are both provided with teeth, and the teeth on the lower surface of the driving ring 21 are engaged with the transmission gear 20; a driving motor 22 is fixed on the fixed frame 19, a driving gear 23 is coaxially and fixedly connected to a rotating shaft of the driving motor 22, and the driving gear 23 is meshed with teeth on the upper surface of the driving ring 21 and presses the driving ring 21 onto the transmission gear 20.

In order to avoid the pressure lever 2 from being propped up when being pressed down because the whole device has enough force, the outer edge of the bracket 5 is also fixedly connected with a reinforced steel cable 24, the outer edge of the underframe 13 is welded with a hanging ring, the end part of the reinforced steel cable 24 is fixedly connected with a safety buckle, the safety buckle at one end of the reinforced steel cable 24 is buckled on the hanging ring on the underframe 13, the other end of the reinforced steel cable is connected with a reinforced pile 25 which is used for being driven into the soil, the hanging ring is also welded on the reinforced pile 25, and the safety buckle at the end part of the reinforced steel cable 24 is buckled on the hanging; the reinforcing piles 25 and the reinforcing steel cables 24 are provided in plural numbers and are uniformly spaced along the outer edge of the base frame 13. Further, it is also possible to press a steel plate on top of the reinforcing piles 25 after the reinforcing piles 25 are driven into the ground, and then press a large heavy object such as a shovel, a truck, or the like onto the steel plate to reinforce the reinforcing piles 25.

And (3) detection process: firstly, cleaning a flat ground on the ground, then placing a detection device on the flat ground, enabling the bearing plate 1 and the bottom frame 13 to be supported on the flat ground, then driving the reinforcing piles 25 into the ground, avoiding the arrangement of the reinforcing piles 25 to be too close to the bottom frame 13, then respectively connecting two ends of the reinforcing steel cables 24 to the bottom frame 13 and the reinforcing piles 25, if necessary, pressing a steel plate on the top of the reinforcing piles 25, then starting a large-scale heavy object such as a digging machine and a transport vehicle to press the steel plate, then starting the driving motor 22 as required to control the winding drum 16 to wind or unwind the force application steel cable 7, enabling the action section of the force application steel cable 7 to be kept at a proper length, then moving the pawl 17 to abut against the ratchet teeth 18 to prevent the winding drum 16 from unwinding, then starting an oil pump to supply oil to the hydraulic jack 9, jacking up the sliding block 15 through the hydraulic jack 9 to enable the sliding block 15 and the winding drum 16, so that the force application steel cable 7 is tightened to pull down the connecting disc 3, at the moment, the pressure sensor 26 between the connecting disc 3 and the pressure rod 2 detects the downward pressure of the pressure rod 2, after the downward pressure of the pressure rod 2 acts on the pressure bearing plate 1, the pressure bearing plate 1 acts on the foundation, after a specific time, the numerical value changed by the observation scale on the pressure rod 2 is observed, and the numerical value is the settlement depth of the pressure bearing plate 1, so that the bearing capacity of the foundation is obtained.

The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.

Claims

1. The utility model provides a foundation bearing capacity detection device, includes bearing plate (1), its characterized in that: perpendicular fixedly connected with depression bar (2) on bearing plate (1), depression bar (2) deviate from the perpendicular fixedly connected with of one end of bearing plate (1) connects disc (3), one section stand pipe (4) has still been cup jointed on depression bar (2), just depression bar (2) with stand pipe (4) sliding connection, the outer wall of stand pipe (4) is fixedly connected with support (5) still, the bottom surface of support (5) with the bottom surface of bearing plate (1) is held level, be provided with on support (5) and be used for the drive power device (6) that depression bar (2) pushed down, power device (6) be provided with a plurality ofly and with depression bar (2) set up for centre of a circle symmetry.

2. A foundation load bearing capacity detecting device according to claim 1, wherein: power device (6) are including connecting application of force steel cable (7) on connection disc (3), and rotate and connect and be in switching-over pulley (8) on support (5), application of force steel cable (7) transmission is connected switching-over pulley (8) are gone up and are the setting of U type, still be fixed with hydraulic jack (9) on support (5), the ejector pin of hydraulic jack (9) is vertical up, application of force steel cable (7) deviate from the one end of connecting disc (3) connect in the ejector pin tip of hydraulic jack (9).

3. A foundation bearing capacity detecting device according to claim 2, wherein: the utility model discloses a joint disc, including connection disc (3), the tip fixedly connected with joint rod (10) of application of force steel cable (7), be provided with on connection disc (3) along its radial logical groove (11) that sets up, it is located to lead to groove (11) the one end at connection disc (3) edge is link up, just the upper surface of connecting disc (3) still be provided with lead to groove (11) vertically crossing draw-in groove (12), application of force steel cable (7) are followed pass in leading to groove (11), just joint rod (10) inlay card is in draw-in groove (12).

4. A foundation bearing capacity detecting device according to claim 2, wherein: support (5) are including chassis (13) and vertical slot frame (14) that fixed connection is in the same place, hydraulic jack (9) are fixed chassis (13) are gone up and are located in vertical slot frame (14), sliding connection has slider (15) of oscilaltion in vertical slot frame (14), application of force steel cable (7) deviate from the one end of connecting disc (3) is fixed on slider (15), the ejector pin top of hydraulic jack (9) is moved slider (15) go up and down.

5. A foundation bearing capacity detecting device according to claim 4, wherein: the winding device is characterized in that a winding drum (16) is connected to the sliding block (15) in a rotating mode, the winding drum (16) penetrates through the sliding block (15), the force application steel cable (7) deviates from one end of the connecting disc (3) and is fixed to the outer wall of the winding drum (16), a pawl (17) is hinged to the sliding block (15), a circle of ratchet teeth (18) are arranged on the outer wall of the winding drum (16) along the circumferential direction of the winding drum, and the pawl (17) abuts against the ratchet teeth (18).

6. A foundation bearing capacity detecting device according to claim 5, wherein: the sliding blocks (15) are also fixedly connected with fixed frames (19), and each sliding block (15) is fixedly connected with the fixed frame (19).

7. A foundation bearing capacity detecting device according to claim 6, wherein: the outer wall of each winding drum (16) is also coaxially and fixedly connected with a transmission gear (20), each winding drum (16) is also supported with a driving ring (21), the upper surface and the lower surface of the driving ring (21) are both provided with teeth and meshed with the transmission gear (20), the fixing frame (19) is fixed with a driving motor (22), a rotating shaft of the driving motor (22) is coaxially and fixedly connected with a driving gear (23), and the driving gear (23) is meshed with the teeth on the upper surface of the driving ring (21).

8. A foundation load bearing capacity detecting device according to claim 1, wherein: the outer edge of the support (5) is fixedly connected with a reinforcing steel cable (24), and one end, deviating from the support (5), of the reinforcing steel cable (24) is fixedly connected with a reinforcing pile (25) used for being driven into the soil.

9. A foundation load bearing capacity detecting device according to claim 1, wherein: a pressure sensor (26) is arranged between the connecting disc (3) and the pressure lever (2), and an observation scale is arranged on the pressure lever (2).