CN111236330B - Pile foundation settlement detection device and detection method thereof - Google Patents
Pile foundation settlement detection device and detection method thereof Download PDFInfo
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- CN111236330B CN111236330B CN202010168262.4A CN202010168262A CN111236330B CN 111236330 B CN111236330 B CN 111236330B CN 202010168262 A CN202010168262 A CN 202010168262A CN 111236330 B CN111236330 B CN 111236330B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
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Abstract
The invention relates to a pile foundation settlement detection device which comprises a ruler body, wherein one end of the ruler body is provided with a base body used for being arranged on a reference pile, the other end of the ruler body is provided with a detection rod used for being abutted against the top surface of a pile foundation to be detected, the base body is provided with a groove body used for allowing one end of the ruler body to move in, one end of the ruler body is penetrated and fixedly connected with a rotating shaft, two ends of the rotating shaft are respectively penetrated and rotatably connected to opposite surfaces of the groove body, the ruler body is provided with an inclination angle detection device used for detecting the inclination angle of the ruler body, the ruler body is arranged to be of a telescopic structure, the ruler body can be suitable for the reference piles and the pile foundation to be detected at different intervals, and the application range of the pile foundation settlement detection device is enlarged.
Description
Technical Field
The invention relates to the technical field of constructional engineering, in particular to a pile foundation settlement detection device and a detection method thereof.
Background
Deep foundations (see the figure) consisting of piles and pile caps (referred to as caps for short) connecting pile tops or single-pile foundations, referred to as pile foundations for short, connecting piles with piles. If the pile body is completely buried in the soil and the bottom surface of the bearing platform is contacted with the soil body, the pile body is called a low bearing platform pile foundation, and if the upper part of the pile body is exposed out of the ground and the bottom of the bearing platform is positioned above the ground, the pile body is called a high bearing platform pile foundation. Building pile foundations are typically low cap pile foundations. In high-rise buildings, pile foundations are widely applied.
Chinese patent with publication number CN202298675U discloses a pile foundation settlement detection ruler, which comprises a ruler body, wherein a high-precision tilt angle sensor is installed on the ruler body, one end of the ruler body is a simple fulcrum, the lower end of the simple fulcrum is in planar contact with a pile top settlement measuring point, the other end of the ruler body is an adjustable twisting fulcrum and is provided with a laser ranging sensor, and the lower end of the adjustable twisting fulcrum is in planar contact with a reference pile. And (3) utilizing the high-precision tilt angle sensor to measure the tiny change of the angle between the reference pile and the measuring point so as to deduce a tiny angle measuring mode of the settlement of the measuring point.
The above prior art solutions have the following drawbacks: before measuring, the testing personnel at first need select and install the position of benchmark stake, in order to avoid receiving flowing water washing, landslide influence, vehicle pedestrian's collision, vibration influence etc, general benchmark stake should set up on the rock mass or solid soil body in open area, avoid the river bank, the side slope, road and other facilities, this just leads to the distance difference between benchmark stake and the pile foundation, and the blade length of same pile foundation detection chi is fixed, make same pile foundation subside detection chi can't be applicable to the benchmark stake and the pile foundation of different intervals, the suitability of pile foundation subside detection chi has been reduced.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a pile foundation settlement detection device suitable for reference piles and pile foundations with different intervals.
The above object of the present invention is achieved by the following technical solutions:
the utility model provides a pile foundation settlement detection device, includes the blade, the one end of blade is provided with the pedestal that is used for arranging the benchmark on the stake in, the other end of blade is provided with the test rod that is used for with the top surface butt that waits to detect the pile foundation, set up the cell body that the one end that is used for supplying the blade moved into on the pedestal, the one end of blade is worn to establish and fixedly connected with axis of rotation, wear to establish respectively and rotate at the both ends of axis of rotation and connect on the face that the cell body is relative, be provided with the inclination detection device who is used for detecting blade inclination on the blade, the blade sets up to scalable structure.
Through adopting above-mentioned technical scheme, set up the blade into extending structure for the blade is applicable to the benchmark stake of different intervals and is waited to detect the pile foundation, has improved pile foundation settlement detection device's application scope.
The present invention in a preferred example may be further configured to: but extending structure includes fixed ruler and telescopic ruler, the spread groove has been seted up towards the fixed ruler in the one end of fixed ruler, the one end of telescopic ruler is provided with the connecting rod of pegging graft and sliding connection in the spread groove, the fixed ruler with the connecting rod is located same plane, the spout has all been seted up on the relative face that just is located the spread groove in the spread groove, be provided with sliding connection in both sides on the connecting rod slider in the spout, the axis of rotation sets up the tip of keeping away from the spread groove at the fixed ruler, the tip that the connecting rod was kept away from at the telescopic ruler in the setting of detection pole, inclination detection device is located the fixed ruler.
By adopting the technical scheme, when the length of the ruler body needs to be adjusted, the connecting rod on the telescopic ruler is driven to move in the connecting groove, the fixed ruler and the connecting rod are arranged on the same plane, so that errors are prevented from being generated in the inclination measurement of the ruler body, the inclination angles of the fixed ruler and the telescopic ruler are the same, and the measurement precision of pile foundation settlement is improved; the setting of spout and slider can make fixed ruler and telescopic ruler lie in same plane all the time, prevents that the connecting rod from driving the connecting rod in the spread groove internal rotation when removing in the spread groove, has improved the regulation effect of blade length.
The present invention in a preferred example may be further configured to: the tip that the telescopic ruler was kept away from to the connecting rod is provided with the mounting that is used for fixing the connecting rod to optional position in the spread groove.
Through adopting above-mentioned technical scheme, the mounting can be fixed the connecting rod to the spread groove in the optional position, prevents to wait to detect that the pile foundation from subsiding and drives the connecting rod and remove in the spread groove for the blade remains the same length throughout, thereby has further improved detection device's detection precision.
The present invention in a preferred example may be further configured to: the mounting is including wearing to establish and sliding connection in the connecting rod keep away from the slide bar on the tip of telescopic ruler, the tip perpendicular to slide bar that inclination detection device was kept away from to the slide bar is provided with the connecting plate, be provided with first spring between connecting plate and the connecting rod, first spring housing is located on the slide bar, the one end of connecting rod is connected to on the connecting plate, and the other end is connected to on the connecting rod, the tip perpendicular to connecting plate that the connecting plate was kept away from to the slide bar is provided with butt joint board.
Through adopting the above technical scheme, when driving the slider and sliding to the spout in, the fixed ruler extrusion butt board removal this moment, make the butt board drive first spring and be extruded to compression state, the butt board can resist the elasticity butt of first spring and connect to on the fixed ruler, thereby make the connecting rod rely on the frictional force between butt board and the fixed ruler to be fixed to the interior optional position of spread groove, when the position of connecting rod is adjusted to needs, move through driving the butt board once more, make first spring further extruded to compression state, it can to drive butt board and fixed ruler break away from, it can accomplish the fixed to the connecting rod to drive the butt board removal through the elasticity that resists first spring, fixed mode is convenient simple.
The present invention in a preferred example may be further configured to: the fixed ruler is provided with a holding tank along the length direction of the connecting groove, the holding tank is located one side of the connecting groove and is mutually parallel to the connecting groove, a rack is arranged in the holding tank along the length direction of the holding tank, and the butt plate is provided with a clamping block used for being clamped between the adjacent tooth parts on the rack on the face towards the rack.
Through adopting above-mentioned technical scheme, when driving the slider and sliding to the spout in with connecting rod immigration to the spread groove in, the rack can extrude the joint piece and drive the butt plate and remove, make first spring by the extrusion compression state, the elasticity joint that the joint piece can resist first spring this moment connects to on the rack between the adjacent tooth portion, thereby make the rack play the effect of stopping to the joint piece along rack length direction's removal, the fixed effect of optional position in fixed to the spread groove of connecting rod has further been improved, pile foundation settlement detection device's detection precision has further been improved.
The present invention in a preferred example may be further configured to: the fixed ruler is provided with first scales along the length direction of the connecting groove, the first scales are used for displaying the length of the whole ruler body, the first scales and the rack are respectively located on two sides of the connecting groove, second scales are arranged on the seat body in the circumferential direction of the rotating shaft, and the second scales are used for displaying the inclination angle of the ruler body.
By adopting the technical scheme, the first scale is convenient for an operator to calculate the length of the ruler body, so that the settlement of the pile foundation is calculated through the length of the ruler body and the inclination angle of the ruler body; the inclination angle of the ruler body can be observed conveniently by an operator through the second scale, and the inclination angle of the ruler body can be further determined through the second scale and the inclination angle detection device.
The present invention in a preferred example may be further configured to: the base is provided with a sleeve used for being plugged into the reference pile, one side of the sleeve is penetrated through and connected with a rod body in a sliding mode, the end portion, located outside the sleeve, of the rod body is provided with a plate body perpendicular to the rod body, a second spring is arranged between the plate body and the sleeve, the second spring is sleeved on the rod body, one end of the second spring is connected to the plate body, the other end of the second spring is connected to the sleeve, the end portion, located inside the sleeve, of the rod body perpendicular to the rod body is provided with a tightening plate, and the tightening plate is used for being abutted to the reference pile.
Through adopting above-mentioned technical scheme, through pegging graft the sleeve to the reference pile on, the reference pile extrusion is to tight board this moment, make to drive the body of rod and remove to tight board, it is pulled to the tensile state to drive the second spring, make to tight board resist the elasticity butt of second spring to the reference pile on, make the sleeve rely on to be fixed to the reference pile between tight board and the reference pile on frictional force, prevent when treating the detection pile foundation settlement volume detection, the solid fixed ruler drives the pedestal and moves on the reference pile, the detection precision of pile foundation settlement detection device has further been improved.
The present invention in a preferred example may be further configured to: the both ends of axis of rotation are provided with screw thread portion, the axis of rotation drives screw thread portion and wears to establish and rotate to connect on the face that the cell body is relative, both sides all overlap on the screw thread portion and establish and threaded connection has the nut, the axis of rotation can be dismantled through screw thread portion and nut and be connected to on the pedestal.
Through adopting above-mentioned technical scheme, the setting of nut can make the axis of rotation can dismantle and be connected to on the pedestal to conveniently get the chi body and pedestal and open and transport.
The present invention in a preferred example may be further configured to: the end part of the detection rod, which is far away from the telescopic ruler, is clamped and embedded and is rotationally connected with a ball.
Through adopting above-mentioned technical scheme, when subsiding the volume to the pile foundation and detecting, can drive the blade slope because of the pile foundation subsides, the telescopic ruler on the blade can drive the measuring staff and remove in the subaerial of pile foundation this moment, and the setting up of ball has reduced the frictional force between measuring staff and the pile foundation, has improved the removal effect of measuring staff on the pile foundation to prevent to damage because of the too big measuring staff that leads to of frictional force, and further improved pile foundation settlement detection device's measurement accuracy.
Aiming at the defects in the prior art, the second purpose of the invention is to provide a pile foundation settlement detection method suitable for reference piles and pile foundations with different intervals.
The above object of the present invention is achieved by the following technical solutions:
a pile foundation settlement detection method comprises the pile foundation settlement detection device, and comprises the following steps:
s1: firstly, the length of a ruler body is adjusted according to the distance between a pile foundation to be detected and a reference pile, the elastic force of a first spring is resisted to drive a clamping block on a butting plate to move, so that the first spring is pulled to be in a further compression state, the butting plate can drive the clamping block to move out between adjacent tooth parts on a rack, a connecting rod on a telescopic ruler is driven to move in a connecting groove at the moment, the length of the whole ruler body is adjusted, the butting plate is loosened after the length is adjusted to be in a specified length, the first spring is still in a compression state at the moment, and the clamping block can resist the elastic force of the first spring and is clamped between the adjacent tooth parts on the rack, so that the ruler body is fixed to the adjusted length;
s3: the fixed ruler and the reference pile are installed and fixed, the fixed ruler drives the sleeve to be inserted into the reference pile, the reference pile can be extruded to press the abutting plate to drive the rod body to move on the sleeve, so that the second spring is driven to be pulled to be in a stretching state, the abutting plate can resist the elastic force of the second spring to abut against the reference pile, and the fixed ruler drives the sleeve to be fixed to the reference pile;
s4: the ball at the end of the detection ruler is abutted to the top surface of the pile foundation to be detected, and the whole pile foundation settlement detection device is installed;
s5: when the settlement of the pile foundation changes, the ruler body can drive the rotating shaft to rotate in the groove body on the base body, and the inclination angle detection device can detect the inclination angle of the ruler body;
s6: and determining the settlement amount of the detection rod by utilizing a trigonometric function according to the length of the ruler body and the inclination angle of the ruler body, and completing the detection of the pile foundation settlement.
Through adopting above-mentioned technical scheme, remove in the spread groove through driving the connecting rod to drive the elasticity joint that the joint piece resisted first spring to the rack on between the adjacent tooth portion, thereby make the blade fixed to different length, make the blade can subside the detection to the benchmark stake and the pile foundation of different intervals, improved pile foundation settlement detection device's application scope.
In summary, the invention includes at least one of the following beneficial technical effects:
1. the telescopic ruler drives the connecting rod to move in the connecting groove in the fixed ruler, so that the clamping block can resist the elastic force of the first spring and be clamped between the adjacent tooth parts on the rack, the ruler body is fixed to different lengths, the pile foundation settlement detection device can perform settlement detection on the reference piles and the pile foundations with different intervals, and the application range of the pile foundation settlement detection device is widened;
2. peg graft to the reference pile on with the sleeve for support tight board can resist the elasticity butt joint of second spring to the outer wall of reference pile on, when detecting pile foundation settlement, prevent that the pile foundation from driving the pedestal and removing on the reference pile when subsiding, improved pile foundation settlement detection device's detection precision.
Drawings
FIG. 1 is a schematic overall structure;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is an enlarged view of portion B of FIG. 1;
FIG. 4 is a partial schematic structural view for showing a fastener;
fig. 5 is a schematic cross-sectional view for showing the holding plate.
In the figure, 1, a ruler body; 11. a base body; 111. a trough body; 112. a rotating shaft; 113. a threaded portion; 114. a nut; 12. a detection lever; 121. a ball bearing; 13. a tilt angle detection device; 14. fixing a ruler; 141. a telescopic ruler; 142. connecting grooves; 143. a connecting rod; 144. a chute; 145. a slider; 15. a slide bar; 151. a connecting plate; 152. a first spring; 153. a butt joint plate; 154. accommodating grooves; 155. a rack; 156. a clamping block; 16. a first scale; 17. a second scale; 18. a sleeve; 181. a rod body; 182. a plate body; 183. a second spring; 184. and tightly abutting against the plate.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, the pile foundation settlement detection device disclosed by the invention comprises a ruler body 1, wherein one end of the ruler body 1 is provided with a base body 11 arranged on a reference pile, and the other end of the ruler body 1 is provided with a detection rod 12 abutted against the top surface of a pile foundation to be detected.
Combine fig. 1 and 3, in order to reduce the frictional force between detection chi and the pile foundation surface to prevent to lead to detecting the chi and can't remove on the pile foundation because of frictional force is too big, thereby improve pile foundation detection device's detection precision, the tip inlay card that keeps away from telescopic rule 141 at measuring stem 12 just rotates and is connected with ball 121.
With reference to fig. 1 and 2, in order to hinge one end of the ruler body 1 to the base 11, a groove 111 for allowing one end of the ruler body 1 to move in is formed in the base 11, one end of the ruler body 1 is penetrated and fixedly connected with a rotating shaft 112, and two ends of the rotating shaft 112 are respectively penetrated and rotatably connected to opposite surfaces of the groove 111.
Combine fig. 1 and fig. 2, for the convenience take off axis of rotation 112 on pedestal 11 to conveniently transport blade 1 and pedestal 11, and conveniently change blade 1, be provided with screw thread portion 113 at the both ends of axis of rotation 112, axis of rotation 112 drives screw thread portion 113 and wears to establish and rotate and connect on the face that the cell body 111 is relative, all overlap on the screw thread portion 113 of both sides and establish and threaded connection has nut 114, axis of rotation 112 can dismantle through screw thread portion 113 and nut 114 and be connected to on the pedestal 11.
Referring to fig. 1 and 5, in order to fix the base body 11 to the reference pile, thereby preventing the base body 11 from moving on the reference pile during settlement detection, a sleeve 18 for being inserted into the reference pile is disposed under the base body 11, one side of the sleeve 18 on the sleeve 18 penetrates through and is slidably connected with a rod body 181, a plate body 182 is disposed at an end of the rod body 181 outside the sleeve 18 and perpendicular to the rod body 181, a second spring 183 is disposed between the plate body 182 and the sleeve 18, the second spring 183 is sleeved on the rod body 181, one end of the second spring 183 is connected to the plate body 182, the other end of the second spring is connected to the sleeve 18, a tightening plate 184 is disposed at an end of the rod body 181 inside the sleeve 18 and perpendicular to the rod body 181, and the tightening plate 184 is used for being tightened against the reference pile.
When sleeve 18 drives pedestal 11 and fixes to the reference pile when needs, through pegging graft sleeve 18 to the reference pile on, the reference pile extrusion is supported tight board 184 this moment, make to support tight board 184 and drive body of rod 181 and remove, it is pulled to tensile state to drive second spring 183, make to support tight board 184 and resist the elasticity butt of second spring 183 to the reference pile on, make sleeve 18 rely on to support the frictional force between tight board 184 and the reference pile and be fixed to the reference pile on, prevent when treating the detection pile foundation settlement volume, set gauge 14 drives pedestal 11 and moves on the reference pile, the detection precision of pile foundation settlement detection device has further been improved.
With reference to fig. 1 and 2, in order to detect the inclination angle of the blade 1, an inclination angle detection device 13 for detecting the inclination angle of the blade 1 is arranged on the blade 1; in the embodiment, the inclination angle detection device 13 comprises an inclination angle sensor and a display screen, wherein the inclination angle sensor can display the inclination angle of the blade 1 on the display fart, so that the inclination angle of the blade 1 can be conveniently detected.
When the settlement of pile foundation needs to be detected, the base body 11 is arranged on the reference pile to drive the detection rod 12 to abut against the top wall of the pile foundation, when the pile foundation settles, the ruler body 1 can drive the rotating shaft 112 to rotate on the base body 11, so that the whole ruler body 1 rotates by a certain angle, and the settlement of the pile foundation can be calculated by adopting a trigonometric function through the inclination angle of the ruler body 1 and the length of the ruler body 1.
With reference to fig. 1 and 2, in order to adjust the length of the blade 1, the blade 1 is set to be a telescopic structure, the telescopic structure includes a fixed ruler 14 and a telescopic ruler 141, a connecting groove 142 is formed in one end of the fixed ruler 14 towards the fixed ruler 14, a connecting rod 143 which is inserted into the connecting groove 142 and is connected to the connecting groove 142 in a sliding manner is arranged at one end of the telescopic ruler 141, and the fixed ruler 14 and the connecting rod 143 are located on the same plane.
Referring to fig. 1 and 2, in order to prevent the connecting rod 143 from rotating in the connecting slot 142 when the connecting rod 143 moves in the connecting slot 142, sliding slots 144 are respectively formed in the connecting slot 142 and on opposite surfaces of the connecting slot 142, a sliding block 145 slidably connected to the sliding slots 144 on two sides is disposed on the connecting rod 143, the rotating shaft 112 is disposed at an end of the fixed scale 14 far from the connecting slot 142, the detecting rod 12 is disposed at an end of the telescopic scale 141 far from the connecting rod 143, and the inclination angle detecting device 13 is disposed on the fixed scale 14.
With reference to fig. 1 and fig. 2, in this embodiment, in order to improve the sliding effect of the sliding block 145 in the sliding groove 144, the cross section of the sliding groove 144 is configured to be "U" shaped, the sliding block 145 is configured to cooperate with the "U" shaped sliding groove 144, and in order to move the connecting rod 143 out of the connecting groove 142, the end of the sliding groove 144 away from the seat body 11 is configured to penetrate through the fixed ruler 14.
When the length of the ruler body 1 needs to be adjusted, the connecting rod 143 on the telescopic ruler 141 is driven to move in the connecting groove 142, the fixed ruler 14 and the connecting rod 143 are arranged on the same plane, errors are prevented from being generated in the inclination measurement of the ruler body 1, the inclination angles of the fixed ruler 14 and the telescopic ruler 141 are the same, and the measurement accuracy of pile foundation settlement is improved; the sliding grooves 144 and the sliding blocks 145 can enable the fixed ruler 14 and the telescopic ruler 141 to be located on the same plane all the time, so that the connecting rod 143 is prevented from driving the connecting rod 143 to rotate in the connecting groove 142 when the connecting rod 143 moves in the connecting groove 142, and the length adjusting effect of the ruler body 1 is improved.
Referring to fig. 1 and 2, in order to fix the connecting rod 143 to an arbitrary position in the connecting groove 142 and prevent the connecting rod 143 from moving in the connecting groove 142 during the sedimentation detection, a fixing member for fixing the connecting rod 143 to an arbitrary position in the connecting groove 142 is provided at an end of the connecting rod 143 away from the extension rule 141.
Referring to fig. 2 and 4, the fixing member includes a sliding rod 15 penetrating through and slidably connected to an end of the connecting rod 143 away from the telescopic ruler 141, a connecting plate 151 is disposed at an end of the sliding rod 15 away from the tilt angle detecting device 13 and perpendicular to the sliding rod 15, a first spring 152 is disposed between the connecting plate 151 and the connecting rod 143, the first spring 152 is sleeved on the sliding rod 15, one end of the connecting rod 143 is connected to the connecting plate 151, the other end of the connecting rod 143 is connected to the connecting rod 143, and an abutting plate 153 is disposed at an end of the sliding rod 15 away from the connecting plate 151 and perpendicular to the connecting plate 151.
With reference to fig. 2 and 4, in order to further improve the fixing effect of the connecting rod 143 fixed to the connecting groove 142, it is prevented that the abutting plate 153 moves on the fixed scale 14 due to insufficient elastic force, an accommodating groove 154 is formed in the fixed scale 14 along the length direction of the connecting groove 142, the accommodating groove 154 is located on one side of the connecting groove 142 and is parallel to the connecting groove 142, a rack 155 is arranged in the accommodating groove 154 along the length direction of the accommodating groove 154, and a clamping block 156 used for being clamped between adjacent teeth of the rack 155 is arranged on the surface of the abutting plate 153 facing the rack 155.
When the sliding block 145 is driven to slide into the sliding groove 144, the rack 155 on the fixed ruler 14 can press the clamping block 156 to move, so that the abutting plate 153 drives the first spring 152 to be pressed to a compressed state, the abutting plate 153 can resist the elastic force of the first spring 152 to drive the clamping block 156 to be clamped between adjacent tooth parts on the rack 155, the clamping block 156 and the rack 155 can stop the movement of the connecting rod 143 along the length direction of the connecting groove 142, the connecting rod 143 is fixed into the connecting groove 142, when the position of the connecting rod 143 needs to be adjusted, the abutting plate 153 is driven to move again, so that the first spring 152 is further pressed to a compressed state, the abutting plate 153 is driven to be separated from the fixed ruler 14, the abutting plate 153 is driven to move by resisting the elastic force of the first spring 152, and the fixing of the connecting rod 143 can be completed, and the fixing mode is convenient and simple.
In other embodiments, the fixing element may be a screw rod passing through and screwed to the connecting rod 143, the abutting plate 153 is disposed at an end of the screw rod, and the screw rod is driven to screw on the connecting rod 143, so that the screw rod drives the clamping block 156 on the abutting plate 153 to be clamped between adjacent teeth on the rack 155, and the fixing of the connecting rod 143 may also be completed.
As shown in fig. 2, in order to calculate the length of the adjusted blade 1, a first scale 16 is provided on the fixed scale 14 along the length direction of the connecting groove 142, and the first scale 16 and the rack 155 are respectively located at both sides of the connecting groove 142.
As shown in fig. 2, in order to observe the rotation angle of the blade 1, a second scale 17 is circumferentially provided on the base body 11 along the circumferential position of the rotation shaft 112.
A pile foundation settlement detection method comprises a pile foundation settlement detection device, and comprises the following steps:
s1: firstly, the length of the ruler body 1 is adjusted according to the distance between a pile foundation to be detected and a reference pile, the elastic force of a first spring 152 is resisted to drive a clamping block 156 on an abutting plate 153 to move, so that the first spring 152 is pulled to a further compression state, the abutting plate 153 can drive the clamping block 156 to move out between adjacent tooth parts on a rack 155 at the moment, a connecting rod 143 on a telescopic ruler 141 is driven to move in a connecting groove 142 at the moment, the length of the whole ruler body 1 is adjusted, after the specified length is adjusted, the abutting plate 153 is loosened, the first spring 152 is still in a compression state at the moment, the clamping block 156 can resist the elastic force of the first spring 152 to be clamped between the adjacent tooth parts on the rack 155, and the ruler body 1 is fixed to the adjusted length;
s3: the fixed ruler 14 and the reference pile are installed and fixed, the fixed ruler 14 drives the sleeve 18 to be inserted into the reference pile, at the moment, the reference pile can be extruded to press the abutting plate 184 to drive the rod body 181 to move on the sleeve 18, so that the second spring 183 is driven to be pulled to be in a stretching state, the abutting plate 184 can resist the elastic force of the second spring 183 to abut against the reference pile, and the fixed ruler 14 drives the sleeve 18 to be fixed on the reference pile;
s4: the ball 121 at the end part of the detection ruler is abutted to the top surface of the pile foundation to be detected, and the whole pile foundation settlement detection device is installed;
s5: when the settlement of the pile foundation changes, the ruler body 1 can drive the rotating shaft 112 to rotate in the groove body 111 on the seat body 11, and the inclination angle detection device 13 can detect the inclination angle of the ruler body 1;
s6: and determining the settlement amount of the detection rod 12 by utilizing a trigonometric function according to the length of the ruler body 1 and the inclination angle of the ruler body 1, and finishing the detection of the pile foundation settlement.
Through fixing chi body 1 to different length for 1 is applicable in the reference pile of different intervals of chi body and treats the pile foundation, has improved pile foundation settlement detection device's application scope.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (7)
1. The utility model provides a pile foundation settlement detection device, includes blade (1), the one end of blade (1) is provided with pedestal (11) that are used for arranging in the benchmark stake, the other end of blade (1) be provided with be used for with wait to detect measuring stick (12) of the top surface butt of pile foundation, its characterized in that: the adjustable ruler is characterized in that a groove body (111) used for allowing one end of the ruler body (1) to move in is formed in the base body (11), one end of the ruler body (1) penetrates through and is fixedly connected with a rotating shaft (112), two ends of the rotating shaft (112) penetrate through and are rotatably connected to opposite faces of the groove body (111), an inclination angle detection device (13) used for detecting the inclination angle of the ruler body (1) is arranged on the ruler body (1), the ruler body (1) is of a telescopic structure, the telescopic structure comprises a fixed ruler (14) and a telescopic ruler (141), a connecting groove (142) is formed in one end of the fixed ruler (14) towards the fixed ruler (14), a connecting rod (143) which is inserted into and is slidably connected into the connecting groove (142) is arranged at one end of the telescopic ruler (141), the fixed ruler (14) and the connecting rod (143) are located on the same plane, sliding grooves (144) are formed in the connecting groove (142) and located on opposite faces of the connecting groove (142), the connecting rod (143) is provided with sliding blocks (145) which are connected with both sides in a sliding groove (144), the rotating shaft (112) is arranged at the end part of the fixed ruler (14) far away from the connecting groove (142), the detection rod (12) is arranged at the end part of the telescopic ruler (141) far away from the connecting rod (143), the inclination angle detection device (13) is arranged on the fixed ruler (14), the end part of the connecting rod (143) far away from the telescopic ruler (141) is provided with a fixing part used for fixing the connecting rod (143) to any position in the connecting groove (142), the fixing part comprises a sliding rod (15) which is arranged in a penetrating way and connected with the end part of the connecting rod (143) far away from the telescopic ruler (141) in a sliding way, the end part of the sliding rod (15) far away from the inclination angle detection device (13) is provided with a connecting plate (151) vertical to the sliding rod (15), and a first spring (152) is arranged between the connecting plate (151) and the connecting rod (143), the first spring (152) is sleeved on the sliding rod (15), one end of the connecting rod (143) is connected to the connecting plate (151), the other end of the connecting rod (143) is connected to the connecting rod (143), and an abutting plate (153) is arranged on the end portion, far away from the connecting plate (151), of the sliding rod (15) and perpendicular to the connecting plate (151).
2. The pile foundation settlement detecting device of claim 1, wherein: holding tank (154) have been seted up along the length direction of connecting groove (142) on fixed scale (14), holding tank (154) are located one side of connecting groove (142) and are parallel to each other setting with connecting groove (142), be provided with rack (155) along the length direction of holding tank (154) in holding tank (154), butt joint board (153) are provided with joint piece (156) that are used for the joint to go up between the adjacent tooth portion on rack (155) towards rack (155).
3. The pile foundation settlement detecting device of claim 2, wherein: the length direction of going up along spread groove (142) on fixed scale (14) is provided with first scale (16), first scale (16) are used for showing the length of whole blade (1), first scale (16) and rack (155) are located the both sides of spread groove (142) respectively, circumferential position hoop along axis of rotation (112) is provided with second scale (17) on pedestal (11), second scale (17) are used for showing the inclination of blade (1).
4. The pile foundation settlement detecting device of claim 3, wherein: be provided with sleeve (18) that are used for pegging graft to the stake of benchmark under pedestal (11), wear to establish and sliding connection has the body of rod (181) on sleeve (18) and be located one side of sleeve (18), the body of rod (181) is located the outer tip perpendicular to body of rod (181) of sleeve (18) and is provided with plate body (182), be provided with second spring (183) between plate body (182) and sleeve (18), the body of rod (181) is located to second spring (183) cover, the one end of second spring (183) is connected to on plate body (182), and the other end is connected to on sleeve (18), the tip perpendicular to body of rod (181) that body of rod (181) is located sleeve (18) is provided with and supports tight board (184), support tight board (184) and be used for with the stake butt of benchmark.
5. The pile foundation settlement detection device of claim 4, wherein: both ends of axis of rotation (112) are provided with screw thread portion (113), axis of rotation (112) drive screw thread portion (113) wear to establish and rotate and connect on the face that cell body (111) is relative, both sides all overlap on screw thread portion (113) and establish and threaded connection has nut (114), axis of rotation (112) can be dismantled through screw thread portion (113) and nut (114) and be connected to on pedestal (11).
6. The pile foundation settlement detecting device of claim 5, wherein: the end part of the detection rod (12) far away from the telescopic ruler (141) is clamped and embedded and is rotationally connected with a ball (121).
7. A pile foundation settlement detection method comprising the pile foundation settlement detection device of claim 6, characterized in that: the method comprises the following steps:
s1: firstly, the length of a ruler body (1) is adjusted according to the distance between a pile foundation to be detected and a reference pile, a clamping block (156) on an abutting plate (153) is driven to move by resisting the elastic force of a first spring (152), so that the first spring (152) is pulled to be in a further compression state, the abutting plate (153) can drive the clamping block (156) to move out between adjacent tooth parts on a rack (155), a connecting rod (143) on a telescopic ruler (141) is driven to move in a connecting groove (142), the length of the whole ruler body (1) is adjusted, after the ruler body is adjusted to be in a specified length, the abutting plate (153) is loosened, the first spring (152) is still in the compression state, and the clamping block (156) can resist the elastic force of the first spring (152) and be clamped between the adjacent tooth parts on the rack (155), so that the ruler body (1) is fixed to the adjusted length;
s3: the fixed ruler (14) and the reference pile are installed and fixed, the fixed ruler (14) drives the sleeve (18) to be inserted into the reference pile, the reference pile can be extruded to press the abutting plate (184) to drive the rod body (181) to move on the sleeve (18), so that the second spring (183) is driven to be pulled to be in a stretching state, the abutting plate (184) can resist the elastic force of the second spring (183) to abut against the reference pile, and the fixed ruler (14) drives the sleeve (18) to be fixed to the reference pile;
s4: the ball (121) at the end part of the detection ruler is abutted to the top surface of the pile foundation to be detected, and the whole pile foundation settlement detection device is installed;
s5: when the settlement of the pile foundation changes, the ruler body (1) can drive the rotating shaft (112) to rotate in the groove body (111) on the base body (11), and the inclination angle detection device (13) can detect the inclination angle of the ruler body (1);
s6: and determining the settlement amount of the detection rod (12) by utilizing a trigonometric function according to the length of the ruler body (1) and the inclination angle of the ruler body (1), and finishing the detection of the pile foundation settlement.
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| CN112575828A (en) * | 2020-12-15 | 2021-03-30 | 南京南房建设工程检测有限公司 | Pile foundation settlement detection device and detection method thereof |
| CN113238296B (en) * | 2021-07-12 | 2021-10-29 | 深圳市勘察研究院有限公司 | Intelligent ground collapse exploration and detection platform |
| CN113418438B (en) * | 2021-07-17 | 2023-02-07 | 黄淮学院 | Intelligent monitoring device for uneven deformation of foundation pit |
| CN114719819B (en) * | 2022-03-07 | 2022-10-28 | 浙江宏业检测科技有限公司 | Pile foundation settlement detection equipment for engineering detection and detection method |
| CN115142394A (en) * | 2022-08-10 | 2022-10-04 | 安徽远信工程项目管理有限公司 | Deformation monitoring and early warning method for high fill and soft foundation engineering |
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