CN111576380A - Foundation bearing capacity detection method - Google Patents
Foundation bearing capacity detection method Download PDFInfo
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- CN111576380A CN111576380A CN202010482033.XA CN202010482033A CN111576380A CN 111576380 A CN111576380 A CN 111576380A CN 202010482033 A CN202010482033 A CN 202010482033A CN 111576380 A CN111576380 A CN 111576380A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D1/00—Investigation of foundation soil in situ
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B5/00—Accessories or details specially adapted for hand carts
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
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Abstract
The invention discloses a foundation bearing capacity detection method, which comprises the following steps: step S1: selecting a foundation to be tested, and cleaning sundries and raised parts on the surface of the foundation to enable the surface of the foundation to tend to be flat; step S2: the user drives the gyro wheel through promoting the base and moves subaerially and stops the balance plate in the top of the ground that awaits measuring correspondingly. Through the motor of design, electric putter, the spool, the clamp plate, detection device, the weight, mutually support between spliced eye and the balancing weight, the detection method of having solved current ground bearing capacity is many to treat the ground and apply pressure, but the stress point is a point usually, the error appears easily, and examine time measuring to a plurality of points, need constantly repeated detection process, the process is comparatively loaded down with trivial details, the accuracy is on the low side, and the heavy object is treating the in-process of detecting the ground and applying pressure, can not prescribe a limit to the orbit of sliding of heavy object, lead to treating the ground atress inequality of waiting, the problem of testing result accuracy has been reduced.
Description
Technical Field
The invention belongs to the technical field of foundation detection, and particularly relates to a foundation bearing capacity detection method.
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. Under the action of load, the foundation is deformed. Along with the increase of load, the foundation deformation increases gradually, and the stress in the foundation soil is in an elastic balance state at the initial stage, so that the foundation has safe bearing capacity. When the load is increased to the point or small area in the foundation, the shear stress of each point in a certain direction plane reaches the shear strength of the soil, the point or small area is subjected to shear failure and is in a limit balance state, and the stress in the soil is redistributed. This small range of shear failure is called the plastic zone. The small-range ultimate balance state of the foundation can be recovered to the elastic balance state, the foundation can be stable, and the foundation still has safe bearing capacity. But the foundation deformation is slightly large at this time, and the calculated value of deformation must be checked and calculated and is not allowed to exceed the allowable value. When the load continues to increase and a large-range plastic area appears on the foundation, the bearing capacity of the foundation is insufficient and the stability is lost. The foundation reaches the ultimate bearing capacity at this time.
When a building is reinforced, whether the foundation can bear when the building body is placed on the foundation needs to be considered, and therefore a method for detecting the weighing capacity of the foundation is needed.
The existing detection method for the bearing capacity of the foundation mostly applies pressure to the foundation to be detected, but the stress point is usually a point, so that errors are easy to occur, and when multiple points are detected, the detection process needs to be repeated continuously, the process is complicated, the accuracy is low, and the sliding track of a heavy object cannot be limited in the process of applying pressure to the foundation to be detected, so that the problem that the bearing capacity of the foundation to be detected is uneven is caused, and the accuracy of the detection result is reduced.
Disclosure of Invention
The present invention is directed to a method for detecting bearing capacity of a foundation, so as to solve the problems mentioned in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: a foundation bearing capacity detection method comprises the following steps:
step S1: selecting a foundation to be tested, and cleaning sundries and raised parts on the surface of the foundation to enable the surface of the foundation to tend to be flat;
step S2: a user pushes the base to drive the roller to move on the ground so as to enable the balance plate to correspondingly stay above the foundation to be measured, then the balance plate is placed on the base and observes liquid in the leveling correction instrument, and whether the base is located in a horizontal plane or not is judged;
step S3: after the preparation work of step S1 and step S2 is completed, the first switch is operated to operate the motor, and the output shaft of the motor can drive the driving shaft to rotate in the bearing during the operation, so that the winding shaft can synchronously rotate and simultaneously wind and connect the traction rope on the surface of the driving shaft, the heavy hammer slides upwards under the pulling action of the traction rope, and then the second switch is operated to make the electric push rod perform the recovery action to drive the winding shaft to approach the driving shaft, so that the traction rope wound on the winding shaft is loosened and quickly separated from the winding shaft under the action of the gravity of the heavy hammer, and simultaneously, the heavy hammer slides downwards under the action of the gravity of the heavy hammer;
step S4: in the descending process of the heavy hammer, the balance plate drives the detection device and the pressure plate on the detection device to synchronously act, the pressure plate can act on the detection device at the moment of impacting the surface of the foundation to be detected, so that the telescopic rod can perform telescopic action in the first telescopic sleeve, in the process, the distance measurement sensor can measure the minimum distance difference between the distance measurement sensor and the telescopic rod, a corresponding broken line statistical graph can be generated through related equipment, a plurality of broken line statistical graphs are counted and compared, and finally the measurement result is tested and recorded;
step S5: loading balancing weights into the inserting holes one by one, and recording data measured by the distance sensor until the telescopic rod is obviously retracted;
step S6: and repeating the steps S1-S5 to measure a plurality of groups of data, summarizing the measured data and calculating the limit of the bearing capacity of the foundation.
Preferably, the opposite face of drive shaft and spool all is provided with the fixing base, and the opposite face of two fixing bases of intercrossing setting is articulated with movable rod back both ends respectively through two first round pin axles, and the opposite face of two movable rods of intercrossing setting passes through the second round pin axle and articulates, the quantity of spool is a plurality of, and a plurality of spool uses the axle center of drive shaft as the centre of a circle and be annular array, and tends to the disc structure after a plurality of spool combination, and the movable rod is as the connection media between drive shaft and the spool for play the fixed effect of supporting to the spool, because the movable rod through first round pin axle as with the fixing base between the connection media, therefore when the in-process that one of them fixing base produced the displacement under electric putter's drive, alright make the spool be close to or keep away from the drive shaft.
Preferably, a first sliding groove is formed in the surface of the driving shaft corresponding to one of the fixing seats, a first sliding block is connected in the first sliding groove in a sliding mode, the first sliding block is fixedly connected with the opposite face of the fixing seat, the side face of the sliding block is fixedly connected with the inner side wall of the first sliding groove through an electric push rod, the first sliding groove and the first sliding block are of a T-shaped structure in the side view cross section, and the first sliding groove and the first sliding block can be used for guaranteeing the stability of the fixing seat connected with the first sliding block in the moving process.
Preferably, the surface of drive shaft has cup jointed the bearing, the bearing joint is in the side of supporting seat to the bottom of supporting seat and the top fixed connection of base, the tip of drive shaft and the tip fixed connection of motor output shaft, and the side of motor fuselage passes through the one side fixed connection that the cushion socket is close with the supporting seat, and the motor can provide torsion for the drive shaft at the in-process of work, and with this torsion effect on the reel, can be used to control the receive and release of traction rope.
Preferably, a telescopic cylinder is fixedly connected to the surface of the balance plate, a second telescopic sleeve is sleeved on the surface of the telescopic sleeve, the top of the second telescopic sleeve is fixedly connected with the bottom of the base, a second sliding groove is formed in the inner side wall of the second telescopic sleeve, a sliding block is connected in the second sliding groove in a sliding mode, the sliding block is fixedly connected with the opposite surface of the telescopic cylinder, and the heavy hammer drives the balance plate to slide up and down, so that the telescopic cylinder can be driven to synchronously slide in the second telescopic sleeve all the time, and the stability of the telescopic cylinder in the sliding process in the second telescopic sleeve can be further improved under the auxiliary effect of the second sliding block and the second sliding groove, therefore, the effect of a lead can be achieved on the balance plate and the balance plate, the heavy hammer can vertically bombard the ground, the stress uniformity of the ground is guaranteed, and the detection precision of the detection device is improved.
Preferably, the surface of the traction rope is sleeved with a rope sleeve, the rope sleeve is clamped at the top of the base, and the rope sleeve is used as a connecting medium of the base and the traction rope and can be used for weakening the friction force between the traction rope and the base, so that the traction rope can be protected to a certain extent.
Preferably, the detection device comprises a first telescopic sleeve, the top of the first telescopic sleeve is fixedly connected with the bottom of the heavy hammer, the first telescopic sleeve is sleeved with a telescopic rod, the bottom end of the telescopic rod is fixedly connected with the top of the pressing plate, the top of the telescopic rod is fixedly connected with a sliding plate which is connected in a sliding groove arranged on the inner side wall of the first telescopic sleeve in a sliding way, the top of the sliding plate is fixedly connected with the top of the inner side of the sliding groove through a spring, the distance measuring sensor is arranged at the top of the inner side of the first telescopic sleeve, and the heavy hammer moves downwards, the moment when the pressure plate impacts the surface of the foundation to be detected through the synchronous action of the balance plate movement detection device and the pressure plate on the detection device, the reaction force can act on the detection device to ensure that the telescopic rod can perform telescopic action in the first telescopic sleeve, in the process, the distance measuring sensor can measure the minimum distance difference between the distance measuring sensor and the telescopic rod.
Preferably, the bottom fixedly connected with slide bar of base, the bottom fixedly connected with running roller of slide bar, the sliding sleeve has been cup jointed on the surface of slide bar, the perforation has been cup jointed on the surface of sliding sleeve, the perforation endotheca is equipped with the bolt to the screw hole threaded connection that bolt and slide bar surface were seted up, the fixed surface of sliding sleeve is connected with the connection handle, the bottom fixedly connected with earth anchor of connection handle pierces the earth's lining back with the earth anchor, and the wrench movement bolt carries out the rotation action in the threaded hole, alright play the fixed effect of restriction to the sliding sleeve for prevent that the gyro wheel from taking place to remove subaerial, effectively improved the stability of base.
Preferably, the top of the balance plate is fixedly connected with the side face of the heavy hammer through the rib plate, the top of the heavy hammer is provided with the inserting hole, the balancing weight is located in the inserting hole, the top of the heavy hammer is provided with the plurality of inserting holes, the total mass of the heavy hammer can be controlled by controlling the amount of the balancing weight, the bearing capacity of the foundation can be detected more completely, and the working efficiency of the detection method is effectively improved.
Preferably, the input of motor passes through the wire and is connected with the output of first switch electricity, electric putter's input passes through the wire and is connected with the output of second switch electricity, the input of first switch and second switch all is connected with the output of power through the wire electricity, first switch and second switch all set up the side at the slide bar, the power sets up the top at the base.
Compared with the prior art, the invention has the beneficial effects that:
1. through the motor of design, electric putter, the spool, a flexible section of thick bamboo, the flexible cover of second, the clamp plate, detection device, the weight, mutually support between spliced eye and the balancing weight, the detection method of having solved current ground bearing capacity is mostly to treat to detect the ground and applys pressure, but the stress point is a point usually, the error appears easily, and when examining a plurality of points, need constantly repeated detection process, the process is comparatively loaded down with trivial details, the accuracy is on the low side, and the heavy object is treating the in-process that detects ground applys pressure, can not prescribe a limit to the orbit of sliding of heavy object, lead to waiting to detect the ground atress inequality, the problem of testing result accuracy has been reduced.
2. Through the designed motor and the driving shaft, the motor can provide torsion for the driving shaft in the working process and act on the reel, can be used for controlling the retraction and release of the traction rope through the designed rope sleeve, the rope sleeve is used as a connecting medium of the base and the traction rope and can be used for weakening the friction force between the traction rope and the base, so that the traction rope can be protected to a certain extent.
Drawings
FIG. 1 is a schematic cross-sectional view of the front view of the present invention;
FIG. 2 is an enlarged schematic view of the structure of the present invention at A;
FIG. 3 is a schematic cross-sectional view of the slide bar of the present invention viewed from the right;
FIG. 4 is a schematic top view of the weight of the present invention;
FIG. 5 is a schematic front view of a cross-sectional structure of the detecting device of the present invention;
in the figure: 1. a drive shaft; 2. a spool; 3. a first pin shaft; 4. a movable rod; 5. a second pin shaft; 6. a first slider; 7. a first chute; 8. an electric push rod; 9. a bearing; 10. a supporting seat; 11. a motor; 12. a base; 13. a traction rope; 14. rope sleeves; 15. a connecting ring; 16. a weight; 17. a balance plate; 18. a rib plate; 19. a detection device; 191. a first telescopic sleeve; 192. a telescopic rod; 193. a slide plate; 194. a sliding groove; 195. a spring; 196. a ranging sensor; 20. pressing a plate; 21. a telescopic cylinder; 22. a second telescopic sleeve; 23. a second slider; 24. a second chute; 25. a slide bar; 26. a sliding sleeve; 27. perforating; 28. a bolt; 29. a threaded hole; 30. a connecting handle; 31. a roller; 32. a ground anchor; 33. a power source; 34. a first switch; 35. a second switch; 36. inserting holes; 37. a balancing weight; 38. a fixed seat.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides a technical solution: a foundation bearing capacity detection method comprises the following steps:
step S1: selecting a foundation to be tested, and cleaning sundries and raised parts on the surface of the foundation to enable the surface of the foundation to tend to be flat;
step S2: the user pushes the base 12 to drive the roller 31 to move on the ground to correspondingly stop the balance plate 17 above the foundation to be measured, then the balance plate is placed on the base 12 and observes liquid in the leveling correction instrument, and whether the base 12 is positioned in a horizontal plane or not is judged;
step S3: after the preparation work of step S1 and step S2 is completed, the first switch 34 is operated to operate the motor 11, and the output shaft of the motor 11 can drive the driving shaft 1 to rotate in the bearing 9 during the operation of the motor 11, so that the traction rope 13 can be wound and connected on the surface of the driving shaft 1 while the winding shaft 2 synchronously rotates, the weight 16 slides upwards under the pulling of the traction rope 13, and then the second switch 35 is operated to perform the recovery action of the electric push rod 8 to drive the winding shaft 2 to approach the driving shaft 1, so that the traction rope 13 wound on the winding shaft 2 is loosened, the weight 16 quickly separates from the winding shaft 2 under the action of the gravity of the weight 16, and the weight 16 slides downwards under the action of the gravity of the weight itself;
step S4: in the descending process of the heavy hammer 16, the balance plate 17 drives the detection device 19 and the pressure plate 20 on the detection device 19 to synchronously act, the moment that the pressure plate 20 impacts the surface of the foundation to be detected can act on the detection device 19 through reaction force, so that the telescopic rod 192 can perform telescopic action in the first telescopic sleeve 191, in the process, the distance measurement sensor 196 can measure the minimum distance difference between the distance measurement sensor and the telescopic rod 192, corresponding broken line statistical graphs can be generated through related equipment, the statistical comparison is performed on a plurality of broken line statistical graphs, and finally the measurement result is tested and recorded;
step S5: the balancing weights 37 are loaded into the inserting holes 36 one by one, and data measured by the distance sensor are recorded until the telescopic rod 192 is obviously retracted;
step S6: and repeating the steps S1-S5 to measure a plurality of groups of data, summarizing the measured data and calculating the limit of the bearing capacity of the foundation.
In this embodiment, preferably, the fixing seats 38 are disposed on the opposite surfaces of the driving shaft 1 and the winding shafts 2, the opposite surfaces of the two fixing seats 38 disposed in a crossing manner are respectively hinged to two ends of the back surface of the movable rod 4 through two first pin shafts 3, the opposite surfaces of the two movable rods 4 disposed in a crossing manner are hinged through a second pin shaft 5, the number of the winding shafts 2 is several, the plurality of winding shafts 2 are in an annular array with the axis of the driving shaft 1 as the center of circle, and the plurality of winding shafts 2 tend to a circular structure after being combined, by designing the movable rod 4, the fixing seats 38, the first pin shaft 3 and the second pin shaft 5, the movable rod 4 is used as a connecting medium between the driving shaft 1 and the winding shafts 2 for supporting and fixing the winding shafts 2, because the movable rod 4 is used as a connecting medium between the fixing seats 38 through the first pin shaft 3, when one of the fixing seats 38 is driven by the electric push rod 8 to generate displacement, the spool 2 can be moved closer to or farther from the drive shaft 1.
In this embodiment, preferably, first chute 7 has been seted up to the position that drive shaft 1 surface corresponds one of them fixing base 38, sliding connection has first slider 6 in first chute 7, and first slider 6 and this fixing base 38's opposite face fixed connection, and the side of slider passes through electric putter 8 and first chute 7's inside wall fixed connection, through first chute 7 and the first slider 6 of design, the cross-sectional shape that first chute 7 and first slider 6 looked sideways is the T font structure, can be used to guarantee the stability of fixing base 38 at the removal in-process that links to each other with first slider 6.
In this embodiment, preferably, the bearing 9 is sleeved on the surface of the driving shaft 1, the bearing 9 is clamped on the side surface of the supporting seat 10, the bottom of the supporting seat 10 is fixedly connected with the top of the base 12, the end of the driving shaft 1 is fixedly connected with the end of the output shaft of the motor 11, the side surface of the body of the motor 11 is fixedly connected with the side surface of the supporting seat 10 close to the damping seat through the damping seat, and through the designed motor 11 and the driving shaft 1, the motor 11 can provide torsion force for the driving shaft 1 in the working process, and the torsion force acts on the reel, so that the winding and unwinding of the traction rope 13 can be controlled.
In this embodiment, preferably, the surface of the balance plate 17 is fixedly connected with a telescopic tube 21, the surface of the telescopic tube is sleeved with a second telescopic sleeve 22, the top of the second telescopic sleeve 22 is fixedly connected with the bottom of the base 12, the inner side wall of the second telescopic sleeve 22 is provided with a second sliding chute 24, a sliding block is slidably connected in the second sliding chute 24, the sliding block is fixedly connected with the opposite surface of the telescopic tube 21, through the designed balance plate 17, the second telescopic sleeve 22 and the telescopic tube 21, the weight 16 can always drive the telescopic tube 21 to perform synchronous sliding motion in the second telescopic sleeve 22 in the process of driving the balance plate 17 to slide up and down, and under the auxiliary action of the second sliding block 23 and the second sliding chute 24, the stability of the telescopic tube 21 in the sliding process in the second telescopic sleeve 22 can be further improved, so that the effect of a wire can be achieved on the weight 16 and the balance plate 17, and the weight 16 can be vertically placed on the foundation, the stress uniformity of the foundation is ensured, and the detection precision of the detection device 19 is improved.
In this embodiment, preferably, the surface of the hauling rope 13 is sleeved with the rope socket 14, the rope socket 14 is clamped on the top of the base 12, and the rope socket 14 is designed to be used as a connecting medium between the base 12 and the hauling rope 13, so as to weaken the friction force between the hauling rope 13 and the base 12, and thus, a certain protection effect can be exerted on the hauling rope 13.
In this embodiment, preferably, the detecting device 19 includes a first telescopic sleeve 191, the top of the first telescopic sleeve 191 is fixedly connected to the bottom of the weight 16, a telescopic rod 192 is connected inside the first telescopic sleeve 191, the bottom end of the telescopic rod 192 is fixedly connected to the top of the pressing plate 20, the top of the telescopic rod 192 is fixedly connected to a sliding plate 193, the sliding plate 193 is slidably connected to a sliding groove 194 formed in the inner side wall of the first telescopic sleeve 191, the top of the sliding plate 193 is fixedly connected to the top of the inner side of the sliding groove 194 through a spring 195, and the distance measuring sensor 196 is disposed at the top of the inner side of the first telescopic sleeve 191, by designing the detecting device 19, the weight 16 drives the detecting device 19 and the pressing plate 20 on the detecting device 19 to perform synchronous motion through the balance plate 17 in the descending process, and the reaction force can be applied to the detecting device 19 at the moment that the pressing plate 20 impacts the surface, the telescopic rod 192 is extended and retracted in the first extension sleeve 191, and in the process, the distance measuring sensor 196 can measure the minimum distance difference between itself and the telescopic rod 192.
In this embodiment, preferably, the bottom of the base 12 is fixedly connected with the sliding rod 25, the bottom of the sliding rod 25 is fixedly connected with the roller, the surface of the sliding rod 25 is sleeved with the sliding sleeve 26, the surface of the sliding sleeve 26 is sleeved with the through hole 27, the through hole 27 is sleeved with the bolt 28, and the bolt 28 is in threaded connection with the threaded hole 29 formed in the surface of the sliding rod 25, the surface of the sliding sleeve 26 is fixedly connected with the connecting handle 30, the bottom of the connecting handle 30 is fixedly connected with the ground anchor 32, through the designed ground anchor 32, the sliding sleeve 26 and the bolt 28, after the ground anchor 32 is inserted into the ground lining, the bolt 28 is twisted to rotate in the threaded hole 29, so that the limiting fixing effect can be achieved on the sliding sleeve 26, the roller 31 is prevented from moving on the ground, and.
In this embodiment, preferably, the top of the balance plate 17 is fixedly connected to the side of the heavy hammer 16 through the rib plate 18, the top of the heavy hammer 16 is provided with the insertion hole 36, the counterweight block 37 is located in the insertion hole 36, the heavy hammer 16 and the counterweight block 37 are designed, the insertion hole 36 is formed in the top of the heavy hammer 16, the total mass of the heavy hammer 16 can be controlled by controlling the amount of the counterweight block 37, so that the bearing capacity of the foundation can be detected more completely, and the working efficiency of the detection method is effectively improved.
In this embodiment, preferably, an input end of the motor 11 is electrically connected to an output end of the first switch 34 through a wire, an input end of the electric push rod 8 is electrically connected to an output end of the second switch 35 through a wire, input ends of the first switch 34 and the second switch 35 are electrically connected to an output end of the power supply 33 through wires, the first switch 34 and the second switch 35 are both disposed on a side surface of the sliding rod 25, and the power supply 33 is disposed on a top portion of the base 12.
The working principle and the using process of the invention are as follows: after the device is installed, a foundation to be tested is selected, sundries and raised parts on the surface of the foundation are cleaned, the surface of the foundation tends to be flat, a user pushes the base 12 to drive the roller 31 to move on the ground so that the balance plate 17 correspondingly stays above the foundation to be tested, then the base 12 is placed and observed with liquid in a leveling correction instrument, whether the base 12 is in a horizontal plane or not is judged, after the preparation work of the step S1 and the step S2 is completed, the first switch 34 is operated to drive the motor 11, the output shaft of the motor 11 can drive the driving shaft 1 to rotate in the bearing 9 in the working process, so that the winding shaft 2 can be synchronously rotated, the traction rope 13 is wound and connected on the surface of the driving shaft 1, the heavy hammer 16 slides upwards under the pulling of the traction rope 13, and then the second switch 35 is operated to enable the electric push rod 8 to perform recovery action, the winding shaft 2 is driven to approach the driving shaft 1, so that the traction rope 13 wound on the winding shaft 2 is loosened, the traction rope is quickly separated from the winding shaft 2 under the action of the gravity of the weight 16, meanwhile, the weight 16 slides downwards under the action of the self gravity, the weight 16 drives the detection device 19 and the pressing plate 20 on the detection device 19 to synchronously act through the balance plate 17 in the descending process, the pressing plate 20 can exert a reaction force on the detection device 19 at the moment of impacting on the surface of a foundation to be detected, so that the telescopic rod 192 performs telescopic action in the first telescopic sleeve 191, in the process, the distance measurement sensor 196 can measure the minimum distance difference between the weight and the telescopic rod 192, corresponding broken line statistical graphs can be generated through relevant equipment, a plurality of broken line statistical graphs are counted and compared, finally, the measured result is tested and recorded, and the balancing weights 37 are loaded into the inserting hole 36 one by one, and recording data measured by the distance sensor until the telescopic rod 192 is obviously retracted, repeating the steps S1-S5, measuring multiple groups of data, summarizing the measured data, and calculating the limit of the bearing capacity of the foundation.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments 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. A foundation bearing capacity detection method is characterized by comprising the following steps: step S1: selecting a proper reference point at the bottom of the inner side of the foundation pit, cleaning sundries and raised parts on the surface of the reference point,
step S2:
step S3:
step S4:
step S5:
step S6
Step S1: selecting a foundation to be tested, and cleaning sundries and raised parts on the surface of the foundation to enable the surface of the foundation to tend to be flat;
step S2: a user pushes the base (12) to drive the roller (31) to move on the ground to correspondingly stop the balance plate (17) above the foundation to be measured, then the balance plate is placed on the base (12) and observes liquid in the leveling correction instrument, and whether the base (12) is positioned in a horizontal plane is judged;
step S3: after the preparation work of the step S1 and the step S2 is finished, the first switch (34) is operated to drive the motor (11), the output shaft of the motor (11) can drive the driving shaft (1) to rotate in the bearing (9) in the working process, so that the winding shaft (2) can synchronously rotate and the traction rope (13) can be wound and connected on the surface of the driving shaft (1), under the pulling of the traction rope (13), the heavy hammer (16) slides upwards, then the second switch (35) is operated to lead the electric push rod (8) to carry out the recovery action, the winding shaft (2) is driven to approach to the direction of the driving shaft (1), the traction rope (13) wound on the winding shaft (2) is loosened, the weight (16) is quickly separated from the winding shaft (2) under the action of the gravity, and meanwhile, the weight (16) slides downwards under the action of the gravity of the weight;
step S4: in the descending process of the heavy hammer (16), the detection device (19) and the pressure plate (20) on the detection device (19) are driven to synchronously act through the balance plate (17), the reaction force can be acted on the detection device (19) at the moment that the pressure plate (20) impacts the surface of a foundation to be detected, so that the telescopic rod (192) can perform telescopic action in the first telescopic sleeve (191), in the process, the distance measurement sensor (196) can measure the minimum distance difference between the distance measurement sensor and the telescopic rod (192), a corresponding broken line statistical graph can be generated through relevant equipment, a plurality of broken line statistical graphs are subjected to statistical comparison, and finally, the measured result is tested and recorded;
step S5: the clump weights (37) are loaded into the inserting holes (36) one by one, and data measured by the distance sensor are recorded until the telescopic rod (192) is obviously retracted;
step S6: and repeating the steps S1-S5 to measure a plurality of groups of data, summarizing the measured data and calculating the limit of the bearing capacity of the foundation.
2. The method for detecting bearing capacity of the foundation as claimed in claim 1, wherein: the opposite surfaces of the driving shaft (1) and the winding shafts (2) are respectively provided with a fixing seat (38), the opposite surfaces of the two fixing seats (38) which are arranged in a mutually crossed manner are respectively hinged with two ends of the back surface of the movable rod (4) through two first pin shafts (3), the opposite surfaces of the two movable rods (4) which are arranged in a mutually crossed manner are hinged through a second pin shaft (5), the number of the winding shafts (2) is a plurality, the plurality of winding shafts (2) are in an annular array by taking the axis of the driving shaft (1) as the center of a circle, the plurality of winding shafts (2) tend to be in a circular surface structure after being combined, the movable rod (4) is used as a connecting medium between the driving shaft (1) and the winding shafts (2) and is used for supporting and fixing the winding shafts (2), and because the movable rod (4) is used as the connecting medium between the movable rod (4) and the fixing seats (38) through the first pin shaft (3), when one fixing seat (38) is driven by the electric push, the spool (2) can be moved closer to or farther from the drive shaft (1).
3. The method for detecting bearing capacity of the foundation as claimed in claim 1, wherein: first spout (7) have been seted up to the position that drive shaft (1) surface corresponds one of them fixing base (38), sliding connection has first slider (6) in first spout (7), and opposite face fixed connection of first slider (6) and this fixing base (38), and the side of slider passes through electric putter (8) and the inside wall fixed connection of first spout (7), and the cross sectional shape that first spout (7) and first slider (6) looked sideways is T font structure, can be used to guarantee the stability of fixing base (38) at the removal in-process that links to each other with first slider (6).
4. The method for detecting bearing capacity of the foundation as claimed in claim 1, wherein: the surface of drive shaft (1) has cup jointed bearing (9), bearing (9) joint is in the side of supporting seat (10) to the top fixed connection of the bottom of supporting seat (10) and base (12), the tip of drive shaft (1) and the tip fixed connection of motor (11) output shaft, and the one side fixed connection that the side of motor (11) fuselage is close through shock attenuation seat and supporting seat (10), and motor (11) can provide torsion for drive shaft (1) in the in-process of work, and with this torsion effect on the reel, can be used to control the receive and release of haulage rope (13).
5. The method for detecting bearing capacity of the foundation as claimed in claim 4, wherein: the surface of the balance plate (17) is fixedly connected with a telescopic tube (21), the surface of the telescopic tube is sleeved with a second telescopic sleeve (22), the top of the second telescopic sleeve (22) is fixedly connected with the bottom of the base (12), a second sliding groove (24) is formed in the inner side wall of the second telescopic sleeve (22), a sliding block is connected in the second sliding groove (24) in a sliding manner, the sliding block is fixedly connected with the opposite surface of the telescopic tube (21), the telescopic tube (21) can be driven to synchronously slide in the second telescopic sleeve (22) all the time in the process that the balance plate (17) is driven to slide up and down by the heavy hammer (16), and the stability of the telescopic tube (21) in the sliding process of the second telescopic sleeve (22) can be further improved under the auxiliary effect of the second sliding block (23) and the second sliding groove (24), so that the effect of conducting wires can be achieved on the heavy hammer (16) and the balance plate (17), the heavy hammer (16) can be bombarded on the foundation vertically, so that the stress uniformity of the foundation is ensured, and the detection precision of the detection device (19) is improved.
6. The method for detecting bearing capacity of the foundation as claimed in claim 1, wherein: the surface of the traction rope (13) is sleeved with a rope sleeve (14), the rope sleeve (14) is clamped at the top of the base (12), and the rope sleeve (14) is used as a connecting medium of the base (12) and the traction rope (13) and can be used for weakening the friction force between the traction rope (13) and the base (12), so that the traction rope (13) can be protected to a certain extent.
7. The method for detecting bearing capacity of the foundation as claimed in claim 1, wherein: the detection device (19) comprises a first telescopic sleeve (191), the top of the first telescopic sleeve (191) is fixedly connected with the bottom of the heavy hammer (16), a telescopic rod (192) is sleeved in the first telescopic sleeve (191), the bottom end of the telescopic rod (192) is fixedly connected with the top of the pressing plate (20), the top of the telescopic rod (192) is fixedly connected with a sliding plate (193), the sliding plate (193) is slidably connected in a sliding groove (194) formed in the inner side wall of the first telescopic sleeve (191), the top of the sliding plate (193) is fixedly connected with the top of the inner side of the sliding groove (194) through a spring (195), a distance measurement sensor (196) is arranged at the top of the inner side of the first telescopic sleeve (191), and the heavy hammer (16) drives the detection device (19) and the pressing plate (20) on the detection device (19) to synchronously move through a balance plate (17) in the descending process, when the pressure plate (20) impacts the surface of the foundation to be measured, reaction force can act on the detection device (19) to enable the telescopic rod (192) to perform telescopic action in the first telescopic sleeve (191), and in the process, the distance measurement sensor (196) can measure the minimum distance difference between the distance measurement sensor and the telescopic rod (192).
8. The method for detecting bearing capacity of the foundation as claimed in claim 1, wherein: the bottom fixedly connected with slide bar (25) of base (12), the bottom fixedly connected with running roller of slide bar (25), sliding sleeve (26) has been cup jointed on the surface of slide bar (25), perforation (27) have been cup jointed on the surface of sliding sleeve (26), perforation (27) endotheca is equipped with bolt (28) to bolt (28) and screw hole (29) threaded connection that slide bar (25) surface was seted up, the fixed surface of sliding sleeve (26) is connected with connecting handle (30), the bottom fixedly connected with earth anchor (32) of connecting handle (30), pierce ground nexine back with earth anchor (32), twist bolt (28) and carry out the rotation action in screw hole (29), alright play restrictive fixed effect to sliding sleeve (26), be used for preventing that gyro wheel (31) from taking place to remove subaerial, effectively improved the stability of base (12).
9. The method for detecting bearing capacity of the foundation as claimed in claim 1, wherein: the top of the balance plate (17) is fixedly connected with the side face of the heavy hammer (16) through the rib plate (18), the top of the heavy hammer (16) is provided with an inserting hole (36), the balancing weight (37) is located in the inserting hole (36), the top of the heavy hammer (16) is provided with a plurality of inserting holes (36), the total mass of the heavy hammer (16) can be controlled by controlling the amount of the balancing weight (37), so that the bearing capacity of a foundation can be detected more completely, and the working efficiency of the detection method is effectively improved.
10. The method for detecting bearing capacity of the foundation as claimed in claim 1, wherein: the input of motor (11) passes through the wire and is connected with the output electricity of first switch (34), the input of electric putter (8) passes through the wire and is connected with the output electricity of second switch (35), the input of first switch (34) and second switch (35) all is connected with the output electricity of power (33) through the wire, first switch (34) and second switch (35) all set up the side at slide bar (25), power (33) set up the top at base (12).
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| CN202010482033.XA CN111576380B (en) | 2020-05-29 | 2020-05-29 | Foundation bearing capacity detection method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113447188A (en) * | 2021-05-31 | 2021-09-28 | 上海交通大学 | Sea wave slamming load actual measurement device and method |
| CN115824377A (en) * | 2023-02-17 | 2023-03-21 | 新乡市朗科精工衡器有限公司 | Weighing and calibrating device for weighing apparatus |
| CN117627079A (en) * | 2024-01-26 | 2024-03-01 | 山西省水利建筑工程局集团有限公司 | Hydraulic engineering foundation bearing capacity detection device and detection method thereof |
| CN118029350A (en) * | 2024-04-11 | 2024-05-14 | 水发金水建设工程有限公司 | Device and method for detecting bearing capacity of hydraulic engineering foundation |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB840980A (en) * | 1956-01-30 | 1960-07-13 | Stichting Waterbouwkundig Lab | Apparatus and process for the determination of the bearing capacity of the soil at various depths |
| CN1032397A (en) * | 1987-02-28 | 1989-04-12 | 中国化学工程总公司北京重型机械化公司 | Apparatus for dynamically measuring bearing capacity of foundation |
| RU2398936C1 (en) * | 2009-05-15 | 2010-09-10 | Открытое акционерное общество "Научно-исследовательский институт транспортного строительства" (ОАО "ЦНИИС") | Method for assessment of drilled pipe bearing capacity |
| CN104501732A (en) * | 2014-12-16 | 2015-04-08 | 河海大学 | Device and method for hydraulic structure deformation distribution type optical fiber monitoring |
| CN207553170U (en) * | 2017-11-16 | 2018-06-29 | 中交三公局第一工程有限公司 | Unfavorable foundation loading test equipment |
| CN109736288A (en) * | 2019-01-24 | 2019-05-10 | 魏立恒 | A kind of Subgrade Compaction detection method and its detection device |
| CN109826250A (en) * | 2019-03-25 | 2019-05-31 | 武汉建诚工程技术有限公司 | A kind of foundation bearing force checking device and method |
| CN209482376U (en) * | 2018-12-28 | 2019-10-11 | 湖北川腾工程技术有限公司 | A kind of building pile foundation detection device based on vibration responding |
| CN209989791U (en) * | 2019-04-22 | 2020-01-24 | 河南省诚建检验检测技术股份有限公司 | Foundation bearing capacity detection equipment |
-
2020
- 2020-05-29 CN CN202010482033.XA patent/CN111576380B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB840980A (en) * | 1956-01-30 | 1960-07-13 | Stichting Waterbouwkundig Lab | Apparatus and process for the determination of the bearing capacity of the soil at various depths |
| CN1032397A (en) * | 1987-02-28 | 1989-04-12 | 中国化学工程总公司北京重型机械化公司 | Apparatus for dynamically measuring bearing capacity of foundation |
| RU2398936C1 (en) * | 2009-05-15 | 2010-09-10 | Открытое акционерное общество "Научно-исследовательский институт транспортного строительства" (ОАО "ЦНИИС") | Method for assessment of drilled pipe bearing capacity |
| CN104501732A (en) * | 2014-12-16 | 2015-04-08 | 河海大学 | Device and method for hydraulic structure deformation distribution type optical fiber monitoring |
| CN207553170U (en) * | 2017-11-16 | 2018-06-29 | 中交三公局第一工程有限公司 | Unfavorable foundation loading test equipment |
| CN209482376U (en) * | 2018-12-28 | 2019-10-11 | 湖北川腾工程技术有限公司 | A kind of building pile foundation detection device based on vibration responding |
| CN109736288A (en) * | 2019-01-24 | 2019-05-10 | 魏立恒 | A kind of Subgrade Compaction detection method and its detection device |
| CN109826250A (en) * | 2019-03-25 | 2019-05-31 | 武汉建诚工程技术有限公司 | A kind of foundation bearing force checking device and method |
| CN209989791U (en) * | 2019-04-22 | 2020-01-24 | 河南省诚建检验检测技术股份有限公司 | Foundation bearing capacity detection equipment |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113447188A (en) * | 2021-05-31 | 2021-09-28 | 上海交通大学 | Sea wave slamming load actual measurement device and method |
| CN115824377A (en) * | 2023-02-17 | 2023-03-21 | 新乡市朗科精工衡器有限公司 | Weighing and calibrating device for weighing apparatus |
| CN115824377B (en) * | 2023-02-17 | 2023-05-02 | 新乡市朗科精工衡器有限公司 | Weighing calibration device of weighing apparatus |
| CN117627079A (en) * | 2024-01-26 | 2024-03-01 | 山西省水利建筑工程局集团有限公司 | Hydraulic engineering foundation bearing capacity detection device and detection method thereof |
| CN117627079B (en) * | 2024-01-26 | 2024-04-05 | 山西省水利建筑工程局集团有限公司 | Hydraulic engineering foundation bearing capacity detection device and detection method thereof |
| CN118029350A (en) * | 2024-04-11 | 2024-05-14 | 水发金水建设工程有限公司 | Device and method for detecting bearing capacity of hydraulic engineering foundation |
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|---|---|
| CN111576380B (en) | 2022-01-07 |
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