CN213867969U - Anchor rod axial force remote monitoring system based on intelligent anchor - Google Patents
Anchor rod axial force remote monitoring system based on intelligent anchor Download PDFInfo
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- CN213867969U CN213867969U CN202022788620.XU CN202022788620U CN213867969U CN 213867969 U CN213867969 U CN 213867969U CN 202022788620 U CN202022788620 U CN 202022788620U CN 213867969 U CN213867969 U CN 213867969U
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Abstract
The utility model relates to an anchor rod axial force remote monitoring system based on intelligent ground tackle, including intelligent ground tackle, treater, server and receiver, intelligent ground tackle is connected with the treater communication, and the treater is connected with the receiver communication, and intelligent ground tackle includes the anchor ring, is used for the split type ground tackle of centre gripping anchor rod muscle body, is used for the sensing the strain gage of the hoop strain of anchor ring and the data collection station who is connected with the strain gage, anchor ring suit are outside split type ground tackle, and the catch outer wall center at the anchor ring is fixed along the hoop of anchor ring to the strain gage. The utility model is suitable for an adopt the anchor engineering of anchor rope and recoverable anchor rope, have simple structure, convenient operation, the advantage that safety can reach.
Description
Technical Field
The utility model relates to a stock axial force remote monitoring system and adopt monitoring method of this system based on intelligent ground tackle is applicable to the remote monitoring of stock axial force in the interim anchor engineering.
Background
In engineering construction, rock and soil anchoring engineering is more and more, the actual stress of the anchor rod in the use stage is too low, too high and abnormal changes all have important influence on the stability of the anchor rod anchoring engineering, so that the monitoring of the axial force of the anchor rod is extremely important for the safety of the anchoring engineering.
At present, the monitoring to stock axial force mainly is at anchor head installation vibration wire formula dynamometer, regularly adopts the on-the-spot data acquisition of collector to calculate axial force, though can monitor the stock axial force better, still has following main problems: (1) the dynamometer is very expensive, and the market price of one dynamometer is generally 900-; (2) the dynamometer belongs to a disposable consumption product, the dynamometer needs to be installed and fixed below an anchorage device, an anchorage device type anchorage device is adopted in general engineering, and in order to avoid the anchorage head steel strand from interfering with subsequent construction, the anchorage device can not be disassembled and the dynamometer can not be disassembled for repeated use, the anchorage device is generally cut off; (3) the number of anchor rods monitored by the dynamometer is very limited, and because the dynamometer is expensive and basically belongs to disposable consumables, in actual engineering, axial force monitoring is generally carried out only on a vertical row of anchor rods with the most dangerous estimated cross sections, so that most of the rest anchor rods are in an out-of-control state in axial force change, and monitoring and protection on engineering safety are extremely unfavorable; (4) the dynamometer has larger size and needs to occupy certain clearance, so that the clearance from the enclosure structure to an underground structure is increased, the earthwork excavation engineering amount is increased, and the engineering construction period is prolonged; (5) the real-time automatic remote monitoring cannot be realized, the manual monitoring of the axial force of the anchor rod is difficult to realize, and when the change of the axial force of the anchor rod is abnormal, the manual monitoring may be delayed, so that the early warning cannot be realized in time; in addition, under special conditions, such as heavy rain, deterioration of construction environment, etc., the personnel safety of technicians may be endangered by carrying out manual monitoring.
In view of the above, the present inventors have made extensive studies on an intelligent anchor and a monitoring system and method thereof, and have made this proposal.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an anchor rod axial force remote monitoring system based on intelligent ground tackle and monitoring method thereof, it has with low costs, can ensure engineering safety's advantage.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
anchor rod axial force remote monitoring system based on intelligent ground tackle, including intelligent ground tackle, treater, server and receiver, intelligent ground tackle is connected with the treater communication, and the treater is connected with the receiver communication, and intelligent ground tackle includes anchor ring, the split type ground tackle that is used for centre gripping anchor rod muscle body, is used for the sensing the strain gage of the hoop strain of anchor ring and the data collection station who is connected with the strain gage, and anchor ring suit is outside split type ground tackle, and the strain gage is fixed at the catch outer wall center of anchor ring along the hoop of anchor ring.
As a preferred mode of the utility model, the treater pass through wireless communication mode with the data collection station communication is connected, and treater connection server, server pass through wireless communication mode and are connected with the receiver.
As an optimized mode of the present invention, the receiver is Pad, smart phone, PC.
As a preferred mode of the utility model, the anchor ring includes first anchor ring and second anchor ring, and first anchor ring and second anchor ring pass through the connecting piece locking together, and first anchor ring and second anchor ring enclose into the ground tackle mounting groove that is used for installing split type ground tackle.
As the utility model discloses a preferred mode still includes the shim, and the shim is followed the axial fixity of anchor ring is at the catch outer wall of anchor ring, and the shim is connected to data collection station.
As a preferred mode of the utility model, split type ground tackle includes two the same first split type ground tackle and a slice second split type ground tackle, and second split type ground tackle sets up between two first split type ground tackle, be provided with first half taper hole and first half lacing hole on the first split type ground tackle, the both sides of second split type ground tackle all are provided with the half taper hole of second that matches with first half taper hole and the half lacing hole of second that matches with first half lacing hole, and first half taper hole and second half taper hole enclose into the taper hole, every the steel strand wires are installed in the taper hole through two clamping pieces.
As a preferred mode of the present invention, the first anchor ring and the second anchor ring all include semicircular locking rings and are disposed at the locking lugs at the two ends of the locking rings, the locking lugs are provided with bolt holes, and the connecting member is a bolt and a nut.
As an optimized mode of the utility model, the both ends of the second split type ground tackle are equipped with spacing tongue, spacing tongue support press on the anchor ring.
As an optimized mode of the utility model, the foil gage with the compensator is fixed through the mode of pasting on the anchor ring, the foil gage is the resistance foil gage.
The utility model also provides a monitoring method adopts the stock axial force remote monitoring system based on intelligent ground tackle, including following step:
(1) intelligent anchor installation
And (3) mounting an anchor ring: sticking the strain gauge and the compensating gauge on the outer wall of the locking ring of the first anchor ring according to a specified direction, packaging, closing the locking lugs of the first anchor ring and the second anchor ring, penetrating a bolt into the bolt through hole, and locking the anchor ring by using a nut to finish the installation of the anchor ring;
assembling the split anchorage device: sleeving the assembled anchor ring on an anchor rod steel strand to be locked, pressing the anchor ring against a force transmission structure beam or a plate, sleeving a first split type anchor and a second split type anchor into the anchor rod steel strand, installing the assembled split type anchor as an inner hole of the anchor ring, pressing the split type anchor to be immobile, rotating the anchor ring until a tangent line at the center vertex of the outer wall of the locking ring is parallel to the long edge of the second split type anchor, stopping rotating the anchor ring, inserting a clamping piece into the tapered hole, and finishing the assembly of the split type anchor;
(2) data signal connection
Connecting a strain gauge and a compensation gauge on the intelligent anchorage device to a data acquisition unit through a lead, connecting the data acquisition unit to a processor, connecting the processor to a server, and sending corresponding information to a receiver through the server;
(3) remote monitoring of anchor rod axial force
And (3) tensioning the anchor rod steel strand by adopting a jack, pre-stressing and locking according to design, acquiring the axial force of the anchor rod to a collector in real time, further transmitting the axial force of the anchor rod to a receiver in real time, and continuously monitoring the axial force of the anchor rod until the function of anchor rod support is finished.
Adopt the technical scheme of the utility model, have following advantage: (1) the intelligent anchor is formed by adopting a split anchor, a split anchor ring and a strain gauge adhered to the split anchor ring, the method for testing the anchor rod shaft force by adopting a traditional dynamometer can be replaced, the annular strain data of the anchor ring is detected by the strain gauge and is transmitted to a data acquisition unit, the traditional dynamometer is expensive, the price of a single strain gauge is about 900 plus 3000 yuan, and the price of a single strain gauge is about 0.5-2.0 yuan; (2) the data acquisition unit acquires the information of the strain gauge, sends the information to the processor for processing, and sends the information to the receiver, so that the monitoring cost is greatly saved, all anchor rods in the engineering can be monitored, and the monitoring cost is low; (3) the on-line, synchronous, real-time and remote monitoring is realized, the potential engineering dangerous case can be early warned in time, and the engineering safety is guaranteed; (4) after the engineering is finished, the intelligent anchorage device can be disassembled and recycled, and is reusable, energy-saving and environment-friendly.
Drawings
Fig. 1 is a plan view of the self-unlocking anchor device in a locked state after the first embodiment of the self-unlocking anchor device is assembled.
Fig. 2 is a bottom view of fig. 1 according to the present invention.
Fig. 3 is a front view of fig. 1 according to the present invention.
Fig. 4 is a left side view of fig. 1 according to the present invention.
Figure 5 is an assembled top view of a first embodiment of the anchor ring of the present invention.
Fig. 6 is a top view of a first embodiment of a first anchor ring of the present invention.
Fig. 7 is a bottom view of a first embodiment of a first anchor ring of the present invention.
Fig. 8 is a front view of fig. 6 according to the present invention.
Fig. 9 is a left side view of fig. 6 according to the present invention.
Figure 10 is a top view of a first embodiment of a second anchor ring according to the present invention.
Fig. 11 is a bottom view of the first embodiment of the second anchor ring of the present invention.
Fig. 12 is a front view of fig. 10 according to the present invention.
Fig. 13 is a left side view of fig. 10 according to the present invention.
FIG. 14 is a top view of the first embodiment of the split anchor of the present invention shown assembled.
Fig. 15 is a bottom view of the first embodiment of the split anchor of the present invention after assembly.
FIG. 16 is a disassembled view of the first embodiment of the split anchor of the present invention.
FIG. 17 is a front view of a first embodiment of a first split anchor of the present invention.
FIG. 18 is a left side view of a first split anchor embodiment of the invention.
Fig. 19 is a left side view of the first embodiment of the second divided anchor of the present invention.
Fig. 20 is a front view of the T-shaped screw of the present invention.
Fig. 21 is a plan view of the self-unlocking anchor according to the first embodiment of the present invention in an unlocked state.
Fig. 22 is a left side view of an unlocked state of an anchor ring according to a first embodiment of the self-unlocking anchor of the present invention.
FIG. 23 is a top view of a self-unlocking anchor according to a second embodiment of the present invention in a locked state.
Figure 24 is a top view of a first anchor ring of a second embodiment of the self-unlocking anchor of the present invention.
Figure 25 is a bottom view of a first anchor ring of a second embodiment of the self-unlocking anchor of the present invention.
Figure 26 is a top view of a second anchor ring of a second embodiment of the self-unlocking anchor of the present invention.
Figure 27 is a second anchor ring bottom view of a second embodiment of the self-unlocking anchor of the present invention.
FIG. 28 is a top view of a third embodiment of a self-unlocking anchor according to the present invention in a locked state.
Figure 29 is a front view of figure 28 in accordance with the present invention.
Fig. 30 is a left side view of fig. 28 according to the present invention.
Fig. 31 is a top view of a third embodiment of the anchor ring of the present invention.
Figure 32 is a front view of a third embodiment of the first split anchor ring of the present invention.
FIG. 33 is an exploded top view of a third embodiment of the split anchor assembly of the present invention.
Fig. 34 is a sectional view taken along line a-a of fig. 33 according to the present invention.
Fig. 35 is a cross-sectional view taken along line B-B of fig. 33 according to the present invention.
Fig. 36 is a cross-sectional view taken along line C-C of fig. 33 according to the present invention.
Fig. 37 is a top view of the intelligent anchor of the present invention.
Fig. 38 is a front view of fig. 37 according to the present invention.
Fig. 39 is a schematic view of the monitoring system of the present invention.
In the figure:
100 anchor ring
110 first anchor ring 111 upper wedge surface 113 of upper wedge 112 unlocking groove 114 upper end ring
120 second anchor ring 121 lower wedge table 122 lower wedge surface 123 lower end ring of screw hole 124
130 anchorage mounting groove
101 locking lug 102 bolt through hole 103 bolt 104 nut 105 locking ring
200 Split anchorage 210 first split anchorage 211 first half taper hole 212 first half rib hole 213 limit tongue
220 second split anchor 221, second half taper hole 222, second half tendon hole
230 clip 231 conical sheet 232 wing plate
300T-shaped screw 310, nut 320, screw 330
400 steel strand
501 strain gage 502 shim 503 conductor
600 data collector 601 wireless base station 602 processor 603 server
604 receiver 605 Pad 606 smartphone 607 PC 608 display terminal
Detailed Description
In order to further explain the technical solution of the present invention, the following embodiments are described in detail.
Referring to fig. 1 to 39, the utility model discloses at first provide a self-unlocking anchor utensil for recoverable stock, specifically refer to fig. 1 to 22, including anchor ring 100, split type ground tackle 200, clamping piece 230 and the T screw 300 that is used for centre gripping anchor rod steel strand wires, in the embodiment, anchor rod steel strand wires are steel strand wires 400, and anchor ring 100 cover is established outside split type ground tackle 200. The anchor ring 100 includes a first anchor ring 110 and a second anchor ring 120, the first anchor ring 110 includes an upper end ring 114 and two upper wedge tables 111 respectively disposed on the upper side of the upper end ring 114, each of the two upper wedge tables 111 is provided with a through elongated unlocking groove 113, the unlocking groove 113 penetrates from the upper end surface to the lower end surface of the upper wedge table 111, and the bottom of the upper wedge table 111 is provided with an inclined upper wedge surface 112. The second anchor ring 120 includes a lower end ring 124 and two lower wedge tables 121 respectively disposed on the lower sides of the lower end ring 124, each of the lower wedge tables 121 is provided with a through screw hole 123, the screw hole 123 penetrates from the upper end surface of the lower wedge table 121 to the lower end surface, the screw hole 123 corresponds to the position of the unlocking groove 113, the top of the lower wedge table 121 is provided with a lower wedge surface 122 capable of being in lap joint with the upper wedge surface 112, and after the upper wedge surface 112 and the lower wedge surface 122 are completely matched, the first anchor ring 110 and the second anchor ring 120 enclose an anchor mounting groove 130. After the upper wedge 111 and the lower wedge 121 are assembled, the screw hole 123 is matched with the bottom of the unlocking groove 113, the upper wedge 111, the upper end ring 114, the lower wedge 121 and the lower end ring 124 enclose an anchor mounting groove 130 for accommodating the split anchor 200, a nut portion 310 of the T-shaped screw 300 abuts against the top of the upper wedge 111, and a screw portion 330 of the T-shaped screw 300 is screwed in the screw hole 123 to tighten the upper wedge 111 and the lower wedge 121 together.
As a preferable mode of the present invention, the cross-section of the outer wall of the anchor ring 100 is circular, and the cross-section of the anchor mounting groove 130 is rectangular.
As a preferred aspect of the present invention, the length of the anchor installation groove 130 is equal to the length of the split type anchor 200, and the width of the anchor installation groove 130 is equal to the width of the split type anchor 200 after assembly.
As a preferred mode of the present invention, the split type anchor 200 includes two identical first split type anchors 210 and a second split type anchor 220, the second split type anchor 220 is disposed between the two first split type anchors 210, the first split type anchor 210 is provided with the first half taper hole 211 and the first half bar-passing hole 212, the two sides of the second split type anchor 220 are provided with the second half taper hole 221 matched with the first half taper hole 211 and the second half bar-passing hole 222 matched with the first half bar-passing hole 212, each steel strand is clamped in the first half taper hole 211 and the second half taper hole 221 through the two clamping pieces 230. The first half taper hole 211 and the second half taper hole 221 may enclose a taper hole, and the first half fillet hole 212 and the second half fillet hole 222 may enclose a fillet hole. The clip 230 is a conventional clip 230 in the field of anchors and comprises a conical sheet and a wing plate connected to the upper end of the conical sheet, wherein the outer diameter of the wing plate is larger than the maximum outer diameter of the semi-conical sheet. In use, two or three clips 230 are typically used to hold a single strand 400.
In a preferred embodiment of the present invention, the unlocking groove 113 has a length direction along the extending direction of the upper wedge 111. As an optimal mode of the present invention, the split type anchorage device 200 has a length direction parallel to the connecting line direction of the unlocking groove 113. As an optimized mode of the utility model, the 113 width of the unlocking groove is 27 ~ 38mm, 113 length of the unlocking groove is 54 ~ 76 mm.
As a preferred embodiment of the present invention, the sum of the lengths of the screw part 320 and the screw part 330 of the T-shaped screw 300 is the same as the height of the upper end ring 114, and the length of the position of the screw part 330 is greater than the length of the screw hole 123 of the second anchor ring 120 by 2 to 6 mm.
The utility model also provides a construction method that is used for the self-unlocking ground tackle of recoverable stock, including following step:
(1) and (3) mounting an anchor ring: placing the upper wedge table 111 of the first anchor ring 110 on the lower wedge table 121 of the second anchor ring 120, enabling the upper wedge table 111 of the first anchor ring 110 to abut against the lower end ring 124 of the second anchor ring 120, enabling the lower wedge table 121 of the second anchor ring 120 to abut against the upper end ring 114 of the first anchor ring 110, penetrating the T-shaped screw 300 into the bottom of the unlocking groove 113 of the first anchor ring 110, screwing the T-shaped screw into the screw hole 123 of the second anchor ring 120, and enabling the nut part 310 of the T-shaped screw 300 to press against the top surface of the first anchor ring 110, so as to finish the installation of the anchor ring 100;
(2) installation of the split anchorage 200: sleeving the installed anchor ring 100 on a steel strand of an anchor rod to be anchored, adjusting the position of the anchor ring 100 to enable the steel strand to be centered, sequentially placing a first split-type anchorage 210 and a second split-type anchorage 220 into an anchorage device installation groove 130 of the anchor ring 100, wherein the length directions of the first split-type anchorage 210 and the second split-type anchorage 220 are parallel to the connecting direction of the left unlocking groove 113 and the right unlocking groove 113; placing the clamping pieces 230 into the first half-cone hole 211 and the second half-cone hole 221, and pushing until the clamping pieces are tightened, thereby completing the installation of the split anchor 200;
(3) tensioning and locking the anchor steel strand 400: tensioning the anchor rod steel strand 400 to a designed prestress value by using a tensioning jack, and then locking to complete anchor rod construction;
(4) dismantling the self-discharging anchor: after the use of the anchor bolt support function is finished, firstly, inserting steel sheets into the lower parts of the wing plates 232 of all the clamping pieces 230 to prevent the clamping pieces 230 from further sliding into the conical holes in the unlocking process; secondly, the two T-shaped screws 300 on the anchor ring 100 are loosened slowly and symmetrically by using a wrench, and because a gap exists above the unlocking groove 113 where the T-shaped screws 300 are located, at the moment, the first split anchor 210 pushes the first anchor ring 110 under the extrusion action of the clamping piece 230 for clamping the steel strand 400, so that the first anchor ring 110 moves along the lower wedge surface 122, the clamping action on the first split anchor 210 and the second split anchor 220 is released, and because a steel sheet is plugged below the wing plate 232 of the clamping piece 230, the clamping piece 230 cannot be further locked into the conical hole, so that the first split anchor 210 is separated from the second split anchor 220; and continuously, symmetrically and synchronously loosening the T-shaped screws 300 to enable the T-shaped screws 300 to move to the top of the unlocking grooves 113, fully separating the first split type anchorage device 210 from the second split type anchorage device 220, sequentially taking out the clamping pieces 230, the split type anchorage devices 200 and the anchor rings 100, and completing the dismantling of the anchorage devices.
Referring to fig. 23 to 27, a second embodiment of the present invention provides a self-unlocking anchor of another structure, which is different from the first embodiment in the structure of the anchor ring and the structure of the split anchor.
In this embodiment, the cross-section of the anchor mounting groove 130 defined by the first anchor ring 110 and the second anchor ring 120 is circular, the cross-section of the assembled split anchor 200 is circular, and the circular split anchor 200 is matched with the circular anchor mounting groove 130.
Referring to fig. 28 to 36, a third embodiment of the present invention provides a self-unlocking anchor of another structure, which is different from the first embodiment in the structure of the anchor ring and the structure of the split type anchor.
In this embodiment, the anchor ring includes a first anchor ring 110, a second anchor ring 120, and a connecting member connecting the first anchor ring 110 and the second anchor ring 120, each of the first anchor ring 110 and the second anchor ring 120 includes a semicircular locking ring 105 and locking lugs 101 disposed at two ends of the locking ring 105, a bolt through hole 102 is disposed on the locking lugs 101, the connecting member is a bolt 103 and a nut 104, the bolt through hole 102 is disposed along a horizontal direction, after the first anchor ring 110 and the second anchor ring 120 abut against each other, the bolt 103 passes through the bolt through hole 102, the first anchor ring 110 and the second anchor ring 120 are locked together by the nut 104, and a cross section of an anchor installation groove 130 defined by the first anchor ring 110 and the second anchor ring 120 is circular.
In this embodiment, the split type anchor 200 includes two identical first split type anchors 210 and one second split type anchor 220, the second split type anchor 220 is disposed between the two first split type anchors 210, the first split type anchor 210 is provided with a first half taper hole 211 and a first half tendon passing hole 212, both sides of the second split type anchor 220 are provided with a second half taper hole 221 matched with the first half taper hole 211 and a second half tendon passing hole 222 matched with the first half tendon passing hole 212, the first half taper hole 211 and the second half taper hole 221 enclose a taper hole, and each of the anchor rod steel strands 400 is installed in the taper hole through two clamping pieces 230. The difference from the first embodiment is that the cross-section of the outer wall of the split anchor 200 is circular in shape, and the split anchor 200 is formed by assembling two pieces of the first split anchor 210 and one piece of the second split anchor 220. In addition, both ends of the second split anchor 220 are provided with a limiting tongue 213, and the limiting tongue 213 is just pressed against the upper end of the anchor ring 100.
The utility model also provides an intelligence ground tackle, including anchor ring 100 and the split type ground tackle 200 that is used for centre gripping stock steel strand wires, anchor ring 100 includes first anchor ring 110 and second anchor ring 120, and first anchor ring 110 and second anchor ring 120 pass through the connecting piece locking together, and first anchor ring 110 and second anchor ring 120 enclose into the ground tackle mounting groove 130 that is used for installing split type ground tackle 200, still including being used for the sensing strain gage 501 and data collection station 600 that the hoop of anchor ring 100 is met an emergency, and strain gage 501 is connected to data collection station 600 through wire 503, and strain gage 501 fixes the positive intermediate position of the outer wall at catch 105 of anchor ring 100 along the hoop of anchor ring 100. The utility model discloses the anchor ring 100 and the split type ground tackle 200 that well intelligent ground tackle related can adopt the structure that the above-mentioned second kind of embodiment introduced, also can adopt the structure that the third kind of embodiment introduced.
The utility model discloses in can also include compensator 502, compensator 502 follows the outer wall axial fixity of catch 105 of anchor ring 100, compensator 502 is connected to through wire 503 data collection station 600 because split type anchor ring 100's axial does not produce the strain, and compensator 502 can be used to the strain difference that strain gage 501 balance temperature arouses.
The utility model discloses well foil gage 501 and shim 502 all can adopt common resistance-type foil gage 501 on the market, and it is fixed at the catch 105 outer wall of anchor ring 100 through the mode of pasting, can take epoxy parcel back, further encapsulates the protection.
The utility model also provides an intelligent ground tackle test anchor rod axle power adopts the ground tackle of foretell second kind embodiment and third kind embodiment, with following calculation mode:
(1) hoop strain of the outer wall of the first anchor ring 110
The calculation formula of (2):
formula for calculation
In the formula: u. ofρRadial displacement of the outer wall of the first anchor ring 110, meters;
r2the outer diameter of the first anchor ring 110, meters;
(2) the formula for the calculation of the radial displacement of the outer wall of the first anchor ring 110:
in the formula: e-modulus of elasticity of the first anchor ring 110, kilopascals;
μ -poisson's ratio of the first anchor ring 110;
q-inner wall confining pressure of anchor ring 100, kilopascal;
r1the inner diameter of the anchor ring 100, meters;
(3) the hoop strain of the outer wall of the first anchor ring 110 is obtained:
(4) obtaining the confining pressure of the inner wall of the anchor ring 100:
(5) the calculation formula of the axial force N of the anchor rod is as follows:
In the formula: inclination angle, degree of the beta-taper hole;
h-height of anchor ring 100, meter;
a pi-circumference ratio;
k-axial force coefficient to obtain
Alpha-anchor ring shape coefficient, default 1.0; and (5) calibrating before leaving the factory.
The method specifically comprises the following steps:
(1) connecting the strain gauge 501 and the compensation gauge 502 on the anchor ring 100 to the data acquisition unit 600 by using a lead 503;
(2) according to the size, the elastic modulus, the Poisson's ratio and the taper angle of the taper hole of the split anchorage device 200 of the anchor ring 100, the formula is adopted
Calculating an axial force coefficient k;
(3) the axial force coefficient k is input into the strain gauge 501 information option frame of the data acquisition unit 600, the anchor ring shape coefficient alpha is input into the data acquisition unit 600, and the data acquisition unit 600 automatically follows the formula according to the annular strain measured by the strain gauge 501 on the anchor ring 100
And calculating and outputting the axial force of the anchor rod.
Because technical scheme's application, compare with current ground tackle, the utility model has the following advantage of showing:
(1) the first anchor ring 110 and the second anchor ring 120 are tightly connected through high-strength bolts, so that the assembly is convenient; (2) when the steel strand 400 is locked, the split parts of the split type anchorage device 200 are pushed, at the moment, the anchor ring 100 can effectively tightly hoop the split type anchorage device 200, and then the steel strand 400 is firmly clamped; (3) in the anchor rod axial force calculation formula, the strain of the strain gauge 501 can be collected in real time, other parameters are known quantities, the anchor rod axial force coefficient can be calculated in advance according to known parameters, the anchor ring shape coefficient can be calibrated and determined before delivery, after the parameters and the coefficients are input into a system stored in the data acquisition unit 600, the data acquisition unit 600 directly and automatically operates according to the test value of the strain gauge 501, and the anchor rod axial force value is output in real time; (4) the intelligent anchor is formed by adopting the split anchor 200, the split anchor ring 100 and the strain gauge 501 adhered on the split anchor ring, and the method for testing the axis force of the anchor rod by adopting a dynamometer can be replaced; (5) the traditional dynamometer has high price, the price of a single strain gauge is about 900-3000 yuan, the price of a single strain gauge 501 is about 0.5-2.0 yuan, and the intelligent anchorage device can be recycled, so that the construction cost is obviously saved; (6) because intelligent ground tackle can retrieve and use repeatedly, foil gage 501 low price can carry out real-time supervision to the axial force of whole stock of anchor engineering, in case discover dangerous situation can in time accurate early warning, ensures engineering safety.
The utility model also provides an anchor rod axial force remote monitoring system based on intelligent ground tackle, including intelligent ground tackle, treater 602, server 603 and receiver 604, intelligent ground tackle is connected with treater 602 communication, and treater 602 is connected with receiver 604 communication, and intelligent ground tackle includes anchor ring 100, is used for the split type ground tackle 200 of centre gripping anchor rod steel strand wires 400, is used for the sensing the foil gage 501 that the hoop of anchor ring 100 is met an emergency and the data collection station 600 of being connected with foil gage 501, anchor ring 100 suit are outside split type ground tackle 200, and the ring 105 outer wall at anchor ring 100 is fixed along the hoop of anchor ring 100 to foil gage 501.
As an optimized mode of the present invention, the processor 602 is connected to the data collector 600 through a wireless communication mode, specifically, the wireless base station 601 transmits signals in succession, the processor 602 is connected to the server 603, and the server 603 is connected to the receiver 604 through a wireless communication mode. As a preferred mode of the present invention, the receiver 604 is Pad605, smart phone 606, PC607, or other display terminal 608. Based on the utility model discloses a gather foil gage 501 data and carry out the design of stock monitoring, corresponding data collection station 600, treater 602 and server 603 can be chooseed for use to the technical personnel in the field, realize the utility model discloses a purpose.
The utility model also provides a monitoring method adopts the stock axial force remote monitoring system based on intelligent ground tackle, and second kind and third kind ground tackle in the ground tackle that above-mentioned introduction can be adopted to intelligent ground tackle in the third kind implementation is exemplified, including following step:
(1) intelligent anchor installation
Installation of the anchor ring 100: sticking the strain gauge 501 and the compensating gauge 502 on the outer wall of the locking ring 105 of the first anchor ring 110 according to a specified direction, packaging, closing the locking lugs 101 of the first anchor ring 110 and the second anchor ring 120, penetrating the bolt 103 into the bolt through hole 102, locking the anchor ring 100 by the nut 104, and finishing the installation of the anchor ring 100;
assembling the split anchorage device 200: sleeving the assembled anchor ring 100 on an anchor rod steel strand 400 to be locked, pressing the anchor rod steel strand 400 against a force transmission structure beam or plate, sleeving the first split-type anchor 210 and the second split-type anchor 220 into the anchor rod steel strand 400, installing the assembled split-type anchor 200 into an inner hole of the anchor ring 100, pressing the split-type anchor 200 to be fixed, rotating the anchor ring 100 until a tangent line at the center vertex of the outer wall of the locking ring 105 is parallel to the long edge of the second split-type anchor 220, stopping rotating the anchor ring 100, inserting the clamping piece 230 into the tapered hole, and finishing the assembly of the split-type anchor 200;
(2) data signal connection
Connecting a strain gauge 501 and a compensation gauge 502 on the intelligent anchor to a data acquisition unit 600 through a wire 503, connecting the data acquisition unit 600 to a processor 602, connecting the processor 602 to a server 603, and sending corresponding information to a receiver 604 through the server 603;
(3) remote monitoring of anchor rod axial force
The anchor rod steel strand 400 is tensioned by a jack, pre-stressed and locked according to design, the axial force of the anchor rod is collected to the collector 600 in real time and further transmitted to the receiver 604 in real time, and the axial force of the anchor rod is continuously monitored until the function of anchor rod support is finished.
The present invention has been described in detail with reference to the accompanying drawings, but the embodiments of the present invention are not limited to the above embodiments, and those skilled in the art can make various modifications according to the prior art, and all belong to the protection scope of the present invention.
Claims (9)
1. Anchor rod axial force remote monitoring system based on intelligent ground tackle, its characterized in that: the intelligent anchor comprises an anchor ring, a split anchor used for clamping an anchor rod steel strand, a strain gauge used for sensing circumferential strain of the anchor ring and a data acquisition unit connected with the strain gauge, wherein the anchor ring is sleeved outside the split anchor, and the strain gauge is fixed on the outer wall of a lock ring of the anchor ring along the circumferential direction of the anchor ring.
2. The intelligent anchor based anchor rod axial force remote monitoring system of claim 1, wherein: the processor is in communication connection with the data acquisition device in a wireless communication mode, the processor is connected with the server, and the server is connected with the receiver in a wireless communication mode.
3. The intelligent anchor based anchor rod axial force remote monitoring system of claim 2, wherein: the receiver is a Pad, a smart phone, a PC or other display terminals.
4. The intelligent anchor based anchor rod axial force remote monitoring system of claim 3, wherein: the anchor ring comprises a first anchor ring and a second anchor ring, the first anchor ring and the second anchor ring are locked together through a connecting piece, and the first anchor ring and the second anchor ring enclose an anchor device installation groove for installing the split type anchor device.
5. The intelligent anchor based anchor rod axial force remote monitoring system of claim 4, wherein: the compensation piece is fixed on the outer wall of the locking ring of the anchor ring along the axial direction of the anchor ring and connected to the data collector.
6. The intelligent anchor based anchor rod axial force remote monitoring system of claim 5, wherein: the split type anchorage device comprises two identical first split type anchorage devices and a second split type anchorage device, wherein the second split type anchorage device is arranged between the two first split type anchorage devices, a first half taper hole and a first half bar penetrating hole are formed in the first split type anchorage device, two sides of the second split type anchorage device are respectively provided with a second half taper hole matched with the first half taper hole and a second half bar penetrating hole matched with the first half bar penetrating hole, the first half taper hole and the second half taper hole are enclosed to form a taper hole, and the steel strand of each anchor rod is installed in the taper hole through the two clamping pieces.
7. The intelligent anchor based anchor rod axial force remote monitoring system of claim 6, wherein: the first anchor ring and the second anchor ring respectively comprise a semicircular locking ring and locking lugs arranged at two ends of the locking ring, bolt through holes are formed in the locking lugs, and the connecting pieces are bolts and nuts.
8. The intelligent anchor based anchor rod axial force remote monitoring system of claim 7, wherein: and two ends of the second split anchor are provided with limiting tongues, and the limiting tongues are pressed against the anchor ring.
9. The intelligent anchor based anchor rod axial force remote monitoring system of claim 8, wherein: the strain gauge and the compensation gauge are fixed on the anchor ring in a sticking mode, and the strain gauge is a resistance strain gauge.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112378555A (en) * | 2020-11-26 | 2021-02-19 | 华侨大学 | Intelligent anchor and method for testing anchor rod axial force |
| CN112411639A (en) * | 2020-11-26 | 2021-02-26 | 华侨大学 | Intelligent anchor device-based anchor rod axial force remote monitoring system and monitoring method using same |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112378555A (en) * | 2020-11-26 | 2021-02-19 | 华侨大学 | Intelligent anchor and method for testing anchor rod axial force |
| CN112411639A (en) * | 2020-11-26 | 2021-02-26 | 华侨大学 | Intelligent anchor device-based anchor rod axial force remote monitoring system and monitoring method using same |
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