CN116220115A - Pile foundation high-strain method detection equipment and pile foundation high-strain method detection method - Google Patents

Abstract

The application relates to pile foundation high strain method check out test set and pile foundation high strain method check out test set, wherein, check out test set includes: a movable base (1) provided with a base receiving frame (11), a telescopic supporting seat (12) and a lifting universal wheel (13); a first movable base (2) provided on the base receiving frame (11) and movable in a first direction; the second moving seat (3) is arranged on the first moving seat and can move along the second direction, and the second moving seat is of a frame structure with two pairs of inner wall surfaces (31); centering detection device (4): comprises a distance sensor (41) arranged in the middle of each inner wall surface; hammering assembly (5): the device comprises a heavy hammer (51), a guide unit (52), a traction unit (53) and a support unit (54), wherein the traction unit is arranged on the support unit and is connected with the heavy hammer so as to drive the heavy hammer to move along the guide unit, and the heavy hammer is arranged right above a region surrounded by the inner wall surface. The method has the effect of good neutrality and high measurement accuracy.

Description

Pile foundation high-strain method detection equipment and pile foundation high-strain method detection method

Technical Field

The application belongs to the technical field of pile foundation detection, and particularly relates to pile foundation high-strain method detection equipment; furthermore, a detection method is disclosed.

Background

The ground pile can improve the basic dynamic characteristic of the foundation, and can be connected with a soil layer or a rock stratum with better bearing capacity so as to improve the capacity of the foundation structure for resisting horizontal force, pulling-up force and overturning force.

The high strain detection is a detection method for judging the vertical compression bearing capacity and the pile body integrity of a single pile, and is characterized in that a hammer is used for impacting the pile top, the speed and force time course curve of the pile top is measured, and the detection method for judging the vertical compression bearing capacity and the pile body integrity of the single pile is analyzed through fluctuation theory, so that hammering equipment is often used in pile foundation high strain detection.

Some hammering equipment in the prior art often is inconvenient to move, carries extremely inconvenient between different ground piles, and in order to make the degree of accuracy that detects higher, needs to make the axis of weight be in on the same straight line with the axis of ground pile, and hammering equipment among the prior art often does not set up the regulation structure that can adjust the position of weight, is difficult to realize the centering between weight and the ground pile for can pound the off tracking when the pile bolck of ground pile is impacted to the weight, lead to pile body both sides atress inhomogeneous, can make the testing result produce great error.

In view of this, it is desirable to provide a pile foundation high strain method detection apparatus.

Disclosure of Invention

In order to improve the defects, the application provides pile foundation high-strain method detection equipment and a pile foundation high-strain method detection method.

The pile foundation high-strain method detection equipment provided by the first aspect of the application adopts the following technical scheme.

A pile foundation high strain method detection device includes:

and (3) moving a base: the lifting device comprises a base bearing frame, a plurality of telescopic supporting seats and a plurality of lifting universal wheels, wherein the telescopic supporting seats and the lifting universal wheels are arranged along the circumferential direction of the bearing frame;

a first movable seat: the first movable seat is of a frame structure, is arranged on the base receiving frame and can move along a first direction on the base receiving frame;

a second movable seat: the second movable seat is of a frame structure and comprises two pairs of inner wall surfaces which are oppositely arranged, the second movable seat is arranged on the first movable seat and can move along a second direction on the first movable seat, and the first direction is perpendicular to the second direction;

centering detection device: the device comprises two pairs of distance sensors, wherein one distance sensor is arranged in the middle of each inner wall surface of the second movable seat;

hammering assembly: the device comprises a heavy hammer, a guiding unit, a traction unit and a support unit, wherein the traction unit is arranged on the support unit and is connected with the heavy hammer, so that the heavy hammer can be driven to ascend or descend along the guiding unit, and the heavy hammer is arranged right above a region surrounded by the inner wall surface on the second movable seat.

By adopting the technical scheme, when the lifting universal wheel falls and the telescopic supporting seat contracts, the lifting universal wheel can be contacted with the ground, so that the movement of the pile foundation high strain method detection equipment is conveniently realized, and the pile foundation high strain method detection equipment is conveniently transferred among all the ground piles to be measured; when the lifting universal wheels are lifted, the telescopic supporting seats can be contacted with the ground through the telescopic supporting seats, and the moving base can be in a horizontal state through the adjustment of the elongation of each telescopic supporting seat so as to conveniently realize the positioning of the heavy hammer in the hammering assembly, in addition, the distance between the moving base (the base supporting frame) and the ground can be ensured to be larger than the height of the ground pile exposed on the ground through the adjustment of the falling distance of the lifting universal wheels so as to conveniently move the base to span the ground pile, thereby the ground pile can be framed in the middle of the base supporting frame, and the distance between the moving base and the ground can be reduced through the lifting of the lifting universal wheels, so that the centering detection device arranged on the second moving base can detect the ground pile, and the centering detection can be conveniently realized; the first direction is perpendicular with the second direction, and through the removal of first removal seat along the first direction and the removal of second removal seat along the second direction, can realize setting up the position adjustment of hammering subassembly (weight) on the second removal seat, thereby be convenient for realize the centering of weight and ground stake, and move up and fall the in-process homoenergetic by the guide unit and realize spacing, thereby can guarantee that the weight can keep good centering with the ground stake in the removal in-process, thereby can make the result of pile foundation detection more accurate.

Specifically, the base-carrying frame is a square frame, each side of the base-carrying frame is provided with one end provided with the telescopic supporting seat, and the other end provided with the lifting universal wheels.

Through adopting above-mentioned technical scheme, can both can guarantee pile foundation high strain method check out test set has good stability when flexible supporting seat and ground contact and lift universal wheel and ground contact, and set up flexible supporting seat and lift universal wheel in square frame's apex angle department, can be convenient for remove the base and stride over ground stake.

Further, the telescopic support seat comprises a support seat screw rod and a gasket, a first internal threaded hole which can be matched with the support seat screw rod is formed in the base bearing frame, one end of the support seat screw rod penetrates through the first internal threaded hole and is abutted to the gasket, and a support seat adjusting hand wheel is arranged at the other end of the support seat screw rod.

Through adopting above-mentioned technical scheme, can realize the flexible and flexible volume of flexible supporting seat's regulation, and the regulation precision is high, is convenient for make the removal base be in the horizontality.

Specifically, the lifting universal wheel comprises a universal wheel body and a lifting wheel screw rod, a second internal threaded hole which can be matched with the lifting wheel screw rod is formed in the base bearing frame, one end of the lifting wheel screw rod penetrates through the second internal threaded hole and is connected with the universal wheel body, and a lifting wheel adjusting hand wheel is arranged at the other end of the lifting wheel screw rod.

Through adopting above-mentioned technical scheme, can realize the lift adjustment to the lift universal wheel to can make the distance increase between removal base and the ground when the lift universal wheel whereabouts, be convenient for remove the base and stride the ground stake and accept the frame middle part with the ground stake frame at the base, make the distance between removal base and the ground reduce when lifting on the lift universal wheel, thereby can make the centering detection device on the second remove the seat can detect the ground stake, so that realize centering detection.

Specifically, the movable base further comprises a pair of first direction guide rails which are oppositely arranged and extend along the first direction, a pair of first direction screws are arranged on two sides of the first direction guide rails, and bearing seats are arranged at two ends of the first direction screws; the bottom of the first movable seat is provided with a first direction guide rail groove matched with the first direction guide rail, and the two sides of the first movable seat are provided with first direction sleeve structures matched with the first direction screw rods.

Through adopting above-mentioned technical scheme, can realize that first removal seat is along the regulation of first direction, and adjust the precision height, can make the centering between weight and the ground stake better.

Further, the upper part of the first movable seat also comprises a pair of second direction guide rails which are oppositely arranged and extend along the second direction, a pair of second direction screw rods are arranged on two sides of the second direction guide rails, and bearing seats are arranged at two ends of the second direction screw rods; the bottom of the second movable seat is provided with a second direction guide rail groove matched with the second direction guide rail, and two sides of the second movable seat are provided with second direction sleeve structures matched with the second direction screw rods.

Through adopting above-mentioned technical scheme, can realize that the second removes the seat and follow the regulation of second direction, and adjust the precision height, can make the centering between weight and the ground stake better.

Further, the bracket unit comprises a pair of upright posts which are oppositely arranged and a cross beam which is erected on the two upright posts, and the two upright posts are respectively arranged in the middle of a pair of frame edges which are oppositely arranged on the second movable seat; the traction unit comprises a motor, a winch, a connecting wire and a positioning pulley, wherein the motor, the winch and the positioning pulley are all arranged on the cross beam, the motor is connected with the winch, one end of the connecting wire is connected with the winch, the other end of the connecting wire penetrates through the positioning pulley to be connected with the heavy hammer, the positioning pulley is arranged as the connecting wire penetrates out of the positioning pulley, and the sagging direction of the connecting wire is located right above an area surrounded by the inner wall surface to be synthesized.

Through adopting above-mentioned technical scheme, set up the location pulley and can make the sagged direction of connecting wire be in by the inner wall face enclose the regional directly over of synthesis to when being convenient for realize the weight reciprocates, its removal orbit can be in on the extension line of the central axis of ground stake, in order to be convenient for realize the centering between weight and the ground stake.

Further, the weight comprises a hammer body, a connecting ring and a pair of oppositely arranged guide ribs, the hammer body is a cylindrical hammer body, the connecting ring is arranged in the middle of the upper end face of the hammer body, the guide ribs are arranged on the side wall of the hammer body, and the guide ribs extend in the vertical direction.

By adopting the technical scheme, the heavy hammer is arranged in a cylindrical shape, so that the axle center of the heavy hammer is convenient to find, and centering between the heavy hammer and the ground pile can be conveniently realized.

Further, the guide unit comprises a pair of guide grooves which are oppositely arranged and extend along the vertical direction, support plates which are matched with the guide grooves, the sizes of the two support plates are consistent, one side of each support plate is connected with the guide groove, the other side of each support plate is connected with the upright post, and the guide convex edges can be clamped in the guide grooves.

Through adopting above-mentioned technical scheme, can be through the cooperation of guide bead with the guide way for the weight is at the in-process of removal, can remain all the time with the centering of ground stake, thereby can guarantee the accuracy of hammering position, in order to guarantee the accuracy of testing result.

The pile foundation high-strain method detection method provided in the second aspect of the application adopts the following technical scheme.

A pile foundation high strain method detection method comprises the following steps:

s1: an acceleration sensor and a strain force sensor are installed on the pile side surface below the pile top, and the acceleration sensor and the strain force sensor are connected with a computer;

s2: hammering the pile top by using the pile foundation high strain method detection equipment in the technical scheme, and recording data of the acceleration sensor and the strain type force sensor;

s3: and analyzing the data of the acceleration sensor and the strain type force sensor by using the computer.

By adopting the technical scheme, the pile foundation high-strain method detection equipment has all technical advantages, and can ensure the centering between the heavy hammer and the ground pile, and further ensure the accuracy of the detection result.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when the lifting universal wheels fall down and the telescopic supporting seat is contracted, the lifting universal wheels can be contacted with the ground, so that the movement of pile foundation high-strain method detection equipment is conveniently realized, and the pile foundation high-strain method detection equipment is conveniently transferred among all the ground piles to be measured; when the lifting universal wheels are lifted, the telescopic supporting seats can be contacted with the ground through the telescopic supporting seats, and the moving base can be in a horizontal state through the adjustment of the elongation of each telescopic supporting seat so as to conveniently realize the positioning of the heavy hammer in the hammering assembly, in addition, the distance between the moving base (the base supporting frame) and the ground can be ensured to be larger than the height of the ground pile exposed out of the ground pile so as to conveniently move the base to span the ground pile, thereby the ground pile can be framed in the middle of the base supporting frame, and the distance between the moving base and the ground can be reduced through the lifting of the lifting universal wheels, so that the centering detection device arranged on the second moving base can detect the ground pile, and the centering detection can be conveniently realized;

2. the first direction is perpendicular with the second direction, and through the removal of first removal seat along the first direction and the removal of second removal seat along the second direction, can realize setting up the position adjustment of hammering subassembly (weight) on the second removal seat, thereby be convenient for realize the centering of weight and ground stake, and move up and fall the in-process homoenergetic by the guide unit and realize spacing, thereby can guarantee that the weight can keep good centering with the ground stake in the removal in-process, thereby can make the result of pile foundation detection more accurate.

Drawings

Fig. 1 is a schematic perspective view of a pile foundation high strain method detection device according to the present application.

Fig. 2 is a top view of the pile foundation high strain method detection apparatus of the present application.

Fig. 3 is a left side view of the pile foundation high strain method detection apparatus of the present application.

Fig. 4 is a plan view of a mobile base (with the telescopic support and lifting universal wheels omitted) in the pile foundation high strain method detection apparatus of the present application.

Fig. 5 is a bottom view of the first traveling seat in the pile foundation high strain method detection apparatus of the present application.

Fig. 6 is a top view of a first traveling seat in the pile foundation high strain method detection apparatus of the present application.

Fig. 7 is a bottom view of a second traveling seat in the pile foundation high strain method detection apparatus of the present application.

Fig. 8 is a cross-sectional view taken along the direction A-A in fig. 3.

Reference numerals: 1. a movable base; 11. a base receiving frame; 12. a telescopic supporting seat; 121. a supporting seat screw rod; 122. a gasket; 123. a supporting seat adjusting hand wheel; 13. lifting universal wheels; 131. a universal wheel body; 132. lifting wheel screw rods; 133. lifting wheel adjusting handwheels; 14. a first direction guide rail; 15. a first direction screw; 2. a first movable seat; 21. a first direction guide rail groove; 22. a first directional sleeve structure; 23. a second direction guide rail; 24. a second direction screw; 3. a second movable seat; 31. an inner wall surface; 32. a second direction guide rail groove; 33. a second directional sleeve structure; 4. centering detection means; 41. a distance sensor; 5. a hammering assembly; 51. a heavy hammer; 511. a hammer body; 512. a connecting ring; 513. a guide rib; 52. a guide unit; 521. a guide groove; 522. a support plate; 53. a traction unit; 531. a motor; 532. a winch; 533. a connecting wire; 534. positioning a pulley; 54. a stand unit; 541. a column; 542. and a cross beam.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-8.

The embodiment of the application discloses pile foundation high strain method detection equipment.

Referring to fig. 1 and 2, a pile foundation high strain method detection apparatus includes a moving base 1, a first moving base 2, a second moving base 3, a centering detection device 4, and a hammering assembly 5; the moving base 1 is configured to drive the pile foundation high strain method detection device to move and transport, so that the pile foundation high strain method detection device is conveniently transferred from a detected ground pile to a next ground pile to be detected, the first moving base 2 and the second moving base 3 are stacked on the moving base 1 and can respectively move along a first direction (such as a front-back direction) and a second direction (such as a left-right direction) which are perpendicular to each other, thereby adjusting the position of the hammering assembly 5 arranged on the second moving base 3, and in the moving adjustment process of the first moving base 2 and the second moving base 3, the centering detection device 4 can be used for detecting whether the hammering assembly 5 is positioned right above the ground pile, so that centering of the hammering assembly 5 (the hammer 51 in the hammer) is realized, and the accuracy of pile foundation detection can be ensured.

Specifically, referring to fig. 1 and 3, in an embodiment of the pile foundation high strain method detection apparatus of the present application, the mobile base 1 may be configured to include a base receiving frame 11, a plurality of telescopic supporting bases 12 arranged along a circumferential direction of each receiving frame, and a plurality of lifting universal wheels 13 capable of lifting, when the lifting universal wheels 13 fall down and the telescopic supporting bases 12 contract, the lifting universal wheels 13 may be in contact with the ground, so as to facilitate movement of the pile foundation high strain method detection apparatus, facilitate transfer between each ground pile to be measured, and adjust a distance between the mobile base 1 and the ground by an amount of falling of the lifting universal wheels 13, the distance between the mobile base 1 and the ground is smaller as the amount of falling of the lifting universal wheels 13 is larger, so that a sufficient distance between the mobile base 1 and the ground can be ensured to be larger than a height of the ground pile exposed to the ground by adjusting the amount of falling of the lifting universal wheels 13, so that the mobile base 1 spans the ground pile; when the lifting universal wheels 13 are lifted, the telescopic supporting seats 12 can be contacted with the ground through the telescopic supporting seats 12, and the movable base 1 can be in a horizontal state through the adjustment of the elongation of each telescopic supporting seat 12, so that the centering and positioning between the hammering assembly 5 and the ground pile can be realized.

Specifically, referring to fig. 1 and 4, in an embodiment of the pile foundation high strain method detection device of the present application, the base receiving frame 11 may be a square frame, and each side of the base receiving frame 11 is set to have one end provided with the telescopic supporting seat 12, the other end is provided with the lifting universal wheel 13, and both ends of each side of the base receiving frame 11 may preferably extend outwards along the length direction of the side, so as to form an extending receiving portion, so that the lifting universal wheel 13 and the telescopic supporting seat 12 are all arranged on the extending receiving portion, on one hand, the range of the four lifting universal wheels 13 or the four telescopic supporting seats 12 is larger, so that the pile foundation high strain method detection device is not easy to fall, and the lifting universal wheel 13 and the telescopic supporting seat 12 are all arranged at the top corner of the base receiving frame 11, so that the base 1 can be convenient to move across from the pile top of the ground pile, so that the ground pile can be located in the middle of the base receiving frame 11, so that the hammering assembly 5 is convenient to be located directly above the ground pile for centering.

Specifically, referring to fig. 1, in an embodiment of the pile foundation high strain method detection apparatus of the present application, the above-mentioned telescopic supporting seat 12 may be configured to include a supporting seat screw 121 and a gasket 122, and a first internal threaded hole capable of being matched with the supporting seat screw 121 is provided on an extension receiving portion on the base receiving frame 11, so that one end of the supporting seat screw 121 passes through the first internal threaded hole and abuts against the gasket 122, and a supporting seat adjusting hand wheel 123 is provided at the other end of the supporting seat screw 121, so that the adjustment of the telescopic amount of the telescopic supporting seat 12 can be achieved by rotating the supporting seat adjusting hand wheel 123, the screw adjustment manner has higher adjustment precision, and in the process of adjusting the telescopic amount of the four telescopic supporting seats 12, a level gauge may be placed at a suitable position on the pile foundation high strain method detection apparatus (for example, on the moving base 1 or the first moving seat 2 and the second moving seat 3), thereby ensuring that the first moving seat 2 and the second moving seat 3 move along the horizontal direction when moving, and further facilitating centering detection of the centering detection apparatus 4 can ensure the accuracy of centering detection.

Specifically, referring to fig. 1, in an embodiment of the pile foundation high strain method detection apparatus of the present application, the lifting universal wheel 13 may be set to include a universal wheel body 131 and a lifting wheel screw 132, and a second internal threaded hole capable of being matched with the lifting wheel screw 132 is provided on an extension receiving part on the base receiving frame 11, so that one end of the lifting wheel screw 132 passes through the second internal threaded hole and is connected with the universal wheel body 131, and a lifting wheel adjusting hand wheel 133 is provided at the other end of the lifting wheel screw 132, so that the lifting universal wheel 13 can be lifted or fallen by rotating the lifting wheel adjusting hand wheel 133, and of course, it is understood that the lifting universal wheel 13 does not need to be set too high in adjusting precision due to the lifting or fallen or lifted lifting of the lifting universal wheel 13, and therefore, the universal wheel body 131 can be connected with the extension receiving part through a hydraulic rod, so that the lifting or fallen or lifted of the lifting universal wheel 13 can be achieved through the extension of the hydraulic rod.

Further, referring to fig. 4 and 5, in an embodiment of the pile foundation high strain method detection apparatus of the present application, a pair of first direction guide rails 14 disposed opposite to each other and extending along a first direction may be further disposed on the moving base 1, a pair of first direction screws 15 are disposed on two sides of the first direction guide rails 14, bearing seats are disposed on two ends of the first direction screws 15, such that the first direction screws 15 can be connected to the moving base 1 through the bearing seats, the first moving base 2 may be configured as a frame structure, a first direction guide rail groove 21 matched with the first direction guide rails 14 should be disposed on the bottom of the first moving base 2, and a first direction sleeve structure 22 matched with the first direction screws 15 is disposed on two sides of the first moving base 2, and an internal threaded hole matched with the first direction screws 15 is disposed in the first direction sleeve structure 22, so that the first moving base 2 can be driven to move along the first direction by rotating the first direction screws 15.

Similarly, referring to fig. 6 and 7, in an embodiment of the pile foundation high strain method detection apparatus of the present application, a pair of second direction guide rails 23 disposed opposite to each other and extending in the second direction are further disposed at the upper portion of the first moving seat 2, and a pair of second direction screws 24 are disposed at both sides of the second direction guide rails 23, and bearing seats are disposed at both ends of the second direction screws 24, so that the second direction screws 24 can be connected to the first moving seat 2 through the bearing seats, the second moving seat 3 can also be disposed as a frame structure, and the bottom of the second moving seat 3 is provided with a second direction guide rail groove 32 matched with the second direction guide rails 23, and a second direction sleeve structure 33 matched with the second direction screws 24 is disposed at both sides of the second moving seat 3, and an internal threaded knot hole matched with the second direction screws 24 is disposed in the second direction sleeve structure, so that the second moving seat 3 can be driven in the second direction by rotating the second direction screws 24, thereby enabling the second moving seat 3 and the hammering assembly 5 disposed thereon to be aligned with the ground; the first movable seat 2 and the second movable seat 3 are both arranged into a frame structure, so that spaces through which the ground piles can pass are formed in the middle parts of the first movable seat 2 and the second movable seat 3.

Specifically, referring to fig. 1 and 7, in an embodiment of the pile foundation high strain method detection apparatus of the present application, the centering detection device 4 may be configured to include two pairs of distance sensors 41, and the two pairs of sensors may be disposed on the second movable seat 3, since the second movable seat 3 is a frame structure surrounded by two pairs of frames, so that there are two pairs of oppositely disposed inner wall surfaces 31, one distance sensor 41 may be disposed in a middle portion of each inner wall surface 31, each distance sensor 41 may be specifically configured as a laser distance sensor 41, and laser light may be emitted to the oppositely disposed distance sensor 41, the four laser distance sensors 41 may be configured such that the laser light emitted by each laser distance sensor 41 may be on the same horizontal plane, and the laser light emitted by each laser distance sensor 41 may be perpendicular to the inner wall surface 31, that is, so that one pair of the two pairs of distance sensors 41 is disposed in the first direction, and the other pair of the laser light emitted by each laser distance sensor 41 may be able to converge at a point, that is, that the laser light emitted by each pair of the oppositely disposed inner wall surfaces 31 is located in the center of the resultant space.

The above arrangement makes the second moving seat 3 move to a place close to the ground when the telescopic supporting seat 12 is contracted, so that the laser emitted by the laser distance sensor 41 can be driven to the side wall (i.e. the pile side surface) of the ground pile and rebound, and thus the distance between each laser distance sensor 41 and the pile side surface can be obtained, and since the ground pile is generally a cylinder, whether centering is realized in the direction where the pair of laser distance sensors 41 is located can be judged by the distance between the two laser distance sensors 41 and the pile side surface in each pair of laser distance sensors 41, the centering is marked in the direction if the distances between the two laser distance sensors 41 and the pile side surface are equal, and the ground pile is located at the center of the space surrounded by the two pairs of oppositely arranged inner wall surfaces 31, and if the distances between the two laser distance sensors 41 and the pile side surface are unequal, the centering is not realized, and further adjustment is needed.

Specifically, referring to fig. 1 and 3, in an embodiment of the pile foundation high strain method detection apparatus of the present application, the hammering assembly 5 may be configured to include a weight 51, a guiding unit 52, a traction unit 53 and a supporting unit 54, wherein the traction unit 53 is disposed on the supporting unit 54 and is connected to the weight 51 so as to drive the weight 51 to rise or fall along the guiding unit 52, and the weight 51 is disposed directly above an area surrounded by the inner wall surface 31 on the second movable base 3, so that after centering according to the above scheme, the weight 51 is directly above the ground pile, so as to be able to realize centering between the weight 51 and the ground pile.

Specifically, referring to fig. 2 and 3, in one embodiment of the pile foundation high strain method detecting apparatus of the present application, the bracket unit 54 may be configured to include a pair of opposite uprights 541 and a cross member 542 erected on the two uprights 541, the two uprights 541 being respectively provided at the middle portions of a pair of opposite frame sides provided on the second movable base 3; the traction unit 53 includes a motor 531, a winch 532, a connecting wire 533 and a positioning pulley 534, wherein the motor 531, the winch 532 and the positioning pulley 534 are all disposed on a beam 542, the motor 531 is connected with the winch 532, one end of the connecting wire 533 is connected with the winch 532, the other end passes through the positioning pulley 534 and is connected with the weight 51, and the positioning pulley 534 is set such that the sagging direction of the connecting wire 533 is directly above the area surrounded by the inner wall surface 31 after the connecting wire 533 passes out of the positioning pulley 534, that is, when the weight 51 moves up and down, the moving track of the weight 51 can be disposed on the extension line of the central axis of the ground pile, so that centering between the weight 51 and the ground pile can be conveniently achieved; after centering and positioning are completed, the motor 531 can be controlled to forward drive the winch 532 to drive the heavy hammer 51 to move upwards, and when the heavy hammer 51 moves to a proper position, the electric reverse rotation is controlled to drive the heavy hammer 51 to fall, so that hammering of the ground pile is realized; it should be noted that the paying-off speed that can be achieved when the motor 531 is reversed should be slightly greater than the free falling speed of the weight 51.

Further, referring to fig. 3 and 8, in an embodiment of the pile foundation high strain method detection apparatus of the present application, the weight 51 may be configured to include the hammer body 511, the connecting ring 512 and a pair of guide ribs 513 disposed opposite to each other, in order to better implement centering between the weight 51 and the ground pile, the hammer body 511 may preferably be cylindrical, the connecting ring 512 may be configured to be a circular ring, and may preferably be disposed in a middle portion of an upper end surface of the hammer body 511 (i.e., on an extension line of a central axis of the cylindrical hammer body 511), the guide ribs 513 are disposed on a side wall of the hammer body 511, two guide ribs 513 are disposed at a distance of 180 ° therebetween, and both guide ribs 513 extend in a vertical direction, and the corresponding guide units 52 are configured to include a pair of guide grooves 521 disposed opposite to each other and support plates 522 matched with each guide groove 521, and one side of each support plate 522 is connected with the guide groove connecting another side of the guide groove 541, and the guide ribs 513 may be engaged in the guide groove 521, so that the hammer 521 can always move in a direction of the guide groove 521 in a direction, thereby ensuring that the vertical position of the weight 521 is not always shifted in a vertical direction, and thus the accurate detection result can be ensured.

The embodiment of the application also discloses a pile foundation high-strain method detection method.

A pile foundation high strain method detection method comprises the following steps:

s1: the acceleration sensor and the strain force sensor are installed on the pile side surface below the pile top, the acceleration sensor and the strain force sensor are connected with the computer, the pile side surface is required to be cleaned so that the pile side surface is clean and smooth, the distance measurement of the laser distance sensor 41 is facilitated, and when the laser distance sensor 41 is utilized for distance measurement, the laser emitted by the laser distance sensor 41 is prevented from irradiating the acceleration sensor or the strain force sensor so as to ensure the accuracy of centering and positioning.

S2: the pile foundation high-strain method detection equipment in the technical scheme is utilized to hammer the pile top and record data of the acceleration sensor and the strain sensor, and based on the mechanism design, the pile foundation high-strain method detection equipment comprises the following specific use steps:

and (5) moving the falling position: the lifting universal wheels 13 are enabled to fall, the telescopic supporting seats 12 are contracted, the pile foundation high-strain method detection equipment can be moved, accordingly the pile foundation high-strain method detection equipment can be moved to the vicinity of a ground pile to be detected, the distance between the movable base 1 and the ground is changed by adjusting the lifting universal wheels 13, so that the movable base 1 spans the ground pile, the ground pile can be located in the middle of the base receiving frame 11, then the lifting universal wheels 13 fall upwards, the telescopic supporting seats 12 are enabled to abut against the ground, the telescopic supporting seats 12 are enabled to be in a horizontal state by adjusting the telescopic amount of the telescopic supporting seats 12, the distance between the second movable seat 3 and the ground can be changed, and laser emitted by the laser distance sensor 41 arranged on the inner wall of the second movable seat 3 can be driven onto the side wall of the ground pile, so that distance measurement can be achieved.

Centering and positioning: the first movable base 2 is adjusted in the first direction so that the distances between the two laser distance sensors 41 provided in the first direction and the pile side surface are equal to thereby achieve centering in the first direction, and then the second movable base 3 is adjusted in the second direction so that the distances between the two laser distance sensors 41 provided in the second direction and the pile side surface are equal to thereby achieve centering in the second direction.

Drop hammer impact: after the centering positioning is completed, the motor 531 is controlled to forward drive the weight 51 to move upwards by the winch 532, and when the weight 51 moves to a proper position, the motor is controlled to reverse electrically to enable the weight 51 to fall, so that hammering of the ground pile is realized.

S3: the data of the acceleration sensor and the strain sensor are analyzed by a computer, specifically, the data can be analyzed by a method such as a waveform fitting method, so as to obtain a structure of pile foundation detection, and the specific analysis method belongs to the prior art and is not repeated here.

The implementation principle of the pile foundation high strain method detection equipment provided by the embodiment of the application is as follows: the lifting universal wheels 13 and the telescopic supporting seats 12 are arranged on the movable base 1, so that when the lifting universal wheels fall down and the telescopic supporting seats 12 shrink, the lifting universal wheels 13 can be contacted with the ground, movement of pile foundation high-strain method detection equipment is conveniently realized, and transfer among all piles to be measured is convenient; when the lifting universal wheels 13 are lifted, the telescopic supporting seats 12 can be contacted with the ground through the telescopic supporting seats 12, and the moving base 1 can be in a horizontal state through the adjustment of the elongation of each telescopic supporting seat 12 so as to conveniently realize the positioning of the heavy hammer 51 in the hammering assembly 5, in addition, the distance between the moving base 1 (the base supporting frame 11) and the ground can be ensured to be larger than the height of the ground pile exposed by the ground pile so as to conveniently move the base 1 to span the ground pile, thereby the middle part of the base supporting frame 11 can be realized, and the distance between the moving base 1 and the ground can be reduced through the lifting of the lifting universal wheels 13 so that the centering detection device 4 arranged on the second moving base 3 can detect the ground pile, thereby being convenient for realizing centering detection.

In addition, through the removal of first movable seat 2 along the first direction and the removal of second movable seat 3 along the second direction, and first direction is perpendicular with the second direction, can realize setting up the position adjustment of hammering subassembly 5 (weight 51) on the second movable seat 3 to be convenient for realize weight 51 and the centering of ground stake, and can all be realized spacing by guide unit 52 at weight 51 up-shifting and the in-process that falls, thereby can guarantee that weight 51 can keep good neutrality with the ground stake in the removal process, thereby can make pile foundation detection's result more accurate.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims (10)

1. Pile foundation high strain method check out test set, characterized in that includes:

moving base (1): comprises a base bearing frame (11), a plurality of telescopic supporting seats (12) and a plurality of lifting universal wheels (13) which can lift, wherein the telescopic supporting seats (12) are arranged along the circumferential direction of the bearing frame (11);

first movable seat (2): the first movable seat (2) is of a frame structure, and the first movable seat (2) is arranged on the base receiving frame (11) and can move along a first direction on the base receiving frame (11);

a second movable seat (3): the second movable seat (3) is of a frame structure and comprises two pairs of inner wall surfaces (31) which are oppositely arranged, the second movable seat (3) is arranged on the first movable seat (2) and can move on the first movable seat (2) along a second direction, and the first direction is perpendicular to the second direction;

centering detection device (4): comprises two pairs of distance sensors (41), wherein the middle part of each inner wall surface (31) of the second movable seat (3) is provided with one distance sensor (41);

hammering assembly (5): the device comprises a heavy hammer (51), a guiding unit (52), a traction unit (53) and a support unit (54), wherein the traction unit (53) is arranged on the support unit (54) and is connected with the heavy hammer (51), so that the heavy hammer (51) can be driven to ascend or descend along the guiding unit (52), and the heavy hammer (51) is arranged right above a region surrounded by the inner wall surface (31) on the second movable seat (3).

2. The pile foundation high strain method detection apparatus of claim 1, wherein: the base receiving frame (11) is a square frame, one end of each side of the base receiving frame (11) is provided with the telescopic supporting seat (12), and the other end of each side of the base receiving frame is provided with the lifting universal wheel (13).

3. The pile foundation high strain method detection apparatus of claim 2, wherein: the telescopic supporting seat (12) comprises a supporting seat screw rod (121) and a gasket (122), a first internal thread hole which can be matched with the supporting seat screw rod (121) is formed in the base bearing frame (11), one end of the supporting seat screw rod (121) penetrates through the first internal thread hole and is abutted to the gasket (122), and a supporting seat adjusting hand wheel (123) is arranged at the other end of the supporting seat screw rod (121).

4. A pile foundation high strain method detection apparatus according to claim 3, wherein: the lifting universal wheel (13) comprises a universal wheel body (131) and a lifting wheel screw rod (132), a second internal thread hole which is matched with the lifting wheel screw rod (132) is formed in the base bearing frame (11), one end of the lifting wheel screw rod (132) penetrates through the second internal thread hole and is connected with the universal wheel body (131), and a lifting wheel adjusting hand wheel (133) is arranged at the other end of the lifting wheel screw rod (132).

5. The pile foundation high strain method detection apparatus of claim 4, wherein: the movable base (1) further comprises a pair of first direction guide rails (14) which are oppositely arranged and extend along the first direction, a pair of first direction screw rods (15) are further arranged on two sides of the first direction guide rails (14), and bearing seats are arranged at two ends of the first direction screw rods (15); the bottom of the first movable seat (2) is provided with a first direction guide rail groove (21) matched with the first direction guide rail (14), and two sides of the first movable seat (2) are provided with first direction sleeve structures (22) matched with the first direction screw rods (15).

6. The pile foundation high strain method detection apparatus of claim 5, wherein: the upper part of the first movable seat (2) further comprises a pair of second direction guide rails (23) which are oppositely arranged and extend along the second direction, a pair of second direction screw rods (24) are further arranged on two sides of the second direction guide rails (23), and bearing seats are arranged at two ends of the second direction screw rods (24); the bottom of the second movable seat (3) is provided with a second direction guide rail groove (32) matched with the second direction guide rail (23), and two sides of the second movable seat (3) are provided with second direction sleeve structures (33) matched with the second direction screw rods (24).

7. The pile foundation high strain method detection apparatus of claim 6, wherein: the bracket unit (54) comprises a pair of upright posts (541) which are oppositely arranged, and a cross beam (542) which is erected on the two upright posts (541), wherein the two upright posts (541) are respectively arranged in the middle of a pair of frame edges which are oppositely arranged on the second movable seat (3); traction element (53) is including motor (531), capstan winch (532), connecting wire (533) and location pulley (534), motor (531) capstan winch (532) with location pulley (534) are all located on crossbeam (542), motor (531) with capstan winch (532) are connected, one end of connecting wire (533) with capstan winch (532) are connected, and the other end passes location pulley (534) with weight (51) are connected, just location pulley (534) set up as connecting wire (533) are worn out from this location pulley (534) after, the sagging direction of connecting wire (533) is in by just over the region of enclosing the synthesis by internal face (31).

8. The pile foundation high strain method detection apparatus of claim 7, wherein: the heavy hammer (51) comprises a hammer body (511), a connecting ring (512) and a pair of opposite guide ribs (513), wherein the hammer body (511) is a cylindrical hammer body, the connecting ring (512) is arranged in the middle of the upper end face of the hammer body (511), the guide ribs (513) are arranged on the side wall of the hammer body (511), and the guide ribs (513) extend in the vertical direction.

9. The pile foundation high strain method detection apparatus of claim 8, wherein: the guide unit (52) comprises a pair of guide grooves (521) which are oppositely arranged and extend along the vertical direction, and support plates (522) which are matched with the guide grooves (521), the sizes of the two support plates (522) are consistent, one side of each support plate (522) is connected with the guide groove (521) while the other side is connected with the upright post (541), and the guide convex edges (513) can be clamped in the guide grooves (521).

10. The pile foundation high strain method detection method is characterized by comprising the following steps:

s1: an acceleration sensor and a strain force sensor are installed on the pile side surface below the pile top, and the acceleration sensor and the strain force sensor are connected with a computer;

s2: hammering the pile top with the pile foundation high strain method detection device of any one of claims 1 to 9 and recording data of the acceleration sensor and the strain gauge sensor;

s3: and analyzing the data of the acceleration sensor and the strain type force sensor by using the computer.

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