CN110761344B - Method and device for constructing anchor rod internal force monitoring system - Google Patents
Method and device for constructing anchor rod internal force monitoring system Download PDFInfo
- Publication number
- CN110761344B CN110761344B CN201911215994.8A CN201911215994A CN110761344B CN 110761344 B CN110761344 B CN 110761344B CN 201911215994 A CN201911215994 A CN 201911215994A CN 110761344 B CN110761344 B CN 110761344B
- Authority
- CN
- China
- Prior art keywords
- anchor
- anchor rod
- original
- plate
- monitoring system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000012544 monitoring process Methods 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims description 7
- 230000007246 mechanism Effects 0.000 claims abstract description 95
- 238000010276 construction Methods 0.000 claims abstract description 45
- 238000004873 anchoring Methods 0.000 claims abstract description 12
- 238000001514 detection method Methods 0.000 claims description 42
- 238000006073 displacement reaction Methods 0.000 claims description 12
- 230000007774 longterm Effects 0.000 abstract description 11
- 239000011435 rock Substances 0.000 abstract description 3
- 239000002689 soil Substances 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 3
- 230000005489 elastic deformation Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000013441 quality evaluation Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 210000002435 tendon Anatomy 0.000 description 1
- 230000001550 time effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention provides a construction method and a construction device of an anchor rod internal force monitoring system, which relate to the technical field of rock and soil anchoring, wherein a support frame, a force measuring mechanism, a first anchor, a jacking mechanism and a second anchor are sequentially sleeved on an anchor rod at the outer side of an original anchor; anchoring a second anchor with the anchor rod; tensioning the anchor rod by using the jacking mechanism; detecting the internal force of the anchor rod by using a force measuring mechanism, and anchoring the first anchor device with the anchor rod when the internal force of the anchor rod reaches a set pressure value; the second anchorage device and the propping mechanism are dismantled, the construction device applied to the anchor rod internal force monitoring system can be directly installed and used on the original anchorage device, the original anchorage device is overhead through the support frame, the force measuring mechanism, the first anchorage device, the propping mechanism and the second anchorage device, the replacement of a new anchorage device under the condition that the original anchorage device is not dismounted is realized, meanwhile, the long-term monitoring of the anchor rod internal force can be realized through the force measuring mechanism, the construction is convenient, and the damage to the supporting structure is avoided.
Description
Technical Field
The invention relates to the technical field of rock and soil anchoring, in particular to a construction method and device of an anchor rod internal force monitoring system.
Background
The internal force of the anchor rod is an important index for judging the safety of the geotechnical engineering supporting structure. The general method for obtaining the internal force of the anchor rod is as follows: in the construction process of the anchor rod, an anchor rod dynamometer is pre-installed between an anchor and a backing plate, and after an anchor head is anchored, a numerical value displayed on the dynamometer is the internal force value of the measured anchor rod; the method can realize long-term monitoring of the internal force of the anchor rod and is mainly used for monitoring geotechnical engineering construction.
During geotechnical engineering support construction, sometimes the condition that the internal force of the anchor rod which is completed by construction needs to be monitored for a long time due to design scheme change, out-of-service of a support structure and the like can be met. In view of the situation, the existing operation method is to disassemble the anchor, then reinstall the dynamometer and stretch and lock the dynamometer, so that the construction is very inconvenient and damage to the supporting structure can be caused.
Disclosure of Invention
The invention aims to provide a construction method and a construction device of an anchor rod internal force monitoring system, which are used for solving the technical problems that in the existing construction method, an anchor device is required to be detached firstly, then a dynamometer is installed again, the anchor rod is tensioned to be locked, construction is very inconvenient, and a supporting structure is damaged.
The invention provides a construction method of an anchor rod internal force monitoring system, which comprises the following steps:
the support frame, the force measuring mechanism, the first anchorage device, the jacking mechanism and the second anchorage device are sequentially sleeved on the anchor rod outside the original anchorage device;
Anchoring the second anchor with the anchor rod;
Tensioning the anchor rod by using the jacking mechanism;
detecting the internal force of the anchor rod by using the force measuring mechanism, and anchoring the first anchor device with the anchor rod when the internal force of the anchor rod reaches a set pressure value;
And removing the second anchor and the jacking mechanism.
The invention provides a construction device of an anchor rod internal force monitoring system, which comprises a support frame, a force measuring mechanism, a jacking mechanism, a first anchorage device, a second anchorage device, a first locking plate and a second locking plate, wherein the support frame is arranged on the support frame;
The support frame comprises support legs and a bearing plate; one end of the supporting leg is connected with the bearing plate;
The other ends of the supporting feet are used for being abutted with the base plate, and through holes for the anchor rods to pass through are formed in the bearing plate;
When the anchor rod penetrates into the through hole on the bearing plate, the second anchor, the jacking mechanism, the first anchor and the force measuring mechanism are sequentially sleeved on the anchor rod along the direction close to the bearing plate, and the force measuring mechanism is abutted with the bearing plate;
the first locking plate is used for being loaded between the first anchor and the anchor rod and enabling the first anchor to be anchored with the anchor rod when being loaded;
The second locking plate is used for being loaded between the second anchor and the anchor rod and enabling the second anchor to be anchored with the anchor rod when being loaded.
Further, the construction device of the anchor rod internal force monitoring system comprises a displacement detection mechanism, wherein the displacement detection mechanism is used for detecting the distance between the original anchor and the backing plate.
Further, the displacement detection mechanism comprises an elastic detection piece, the elastic detection piece is connected with the base plate, the elastic detection piece is sleeved on the first anchorage device, and the elastic detection piece is positioned at the joint of the original anchorage device and the base plate and is abutted to the outer wall of the original anchorage device;
the elastic detection piece has a set thickness, and when the distance between the original anchor and the backing plate reaches the thickness of the elastic detection piece, the elastic detection piece can spring into a gap between the original anchor and the backing plate.
Further, the elastic detection piece is an elastic band.
Further, the force measuring mechanism is a hollow force measuring meter.
Further, the jacking mechanism is a hollow jack.
Further, the support frame comprises an inclined strut member, one end of the inclined strut member is connected with one support leg, and the other end of the inclined strut member is connected with the bearing plate.
Further, the bearing plate is rectangular, the number of the supporting feet is four, and each corner of the bearing plate is provided with one supporting foot.
Further, the plane of the bearing plate is parallel to the plane of the backing plate.
The invention provides a construction method of an anchor rod internal force monitoring system, which comprises the following steps: the support frame, the force measuring mechanism, the first anchorage device, the jacking mechanism and the second anchorage device are sequentially sleeved on the anchor rod outside the original anchorage device; anchoring a second anchor with the anchor rod; tensioning the anchor rod by using the jacking mechanism; detecting the internal force of the anchor rod by using a force measuring mechanism, and anchoring the first anchor device with the anchor rod when the internal force of the anchor rod reaches a set pressure value; the second anchorage device and the propping mechanism are removed, the construction method of the anchor rod internal force monitoring system is suitable for anchor rod internal force monitoring after tensioning construction is completed, the original anchorage device is overhead through the support frame, the force measuring mechanism, the first anchorage device, the propping mechanism and the second anchorage device, the replacement of the new anchorage device under the condition that the original anchorage device is not dismounted is realized, meanwhile, the long-term monitoring of the anchor rod internal force can be realized through the force measuring mechanism, the construction is convenient, and damage to a supporting structure is avoided.
The invention provides a construction device of an anchor rod internal force monitoring system, which comprises a support frame, a force measuring mechanism, a jacking mechanism, a first anchorage device, a second anchorage device, a first locking plate and a second locking plate, wherein the support frame is arranged on the support frame; the support frame comprises support legs and a bearing plate; one end of the supporting leg is connected with the bearing plate; the other ends of the supporting feet are used for being abutted with the base plate, and through holes for the anchor rods to pass through are formed in the bearing plate; when the anchor rod penetrates into the through hole on the bearing plate, the second anchor, the jacking mechanism, the first anchor and the force measuring mechanism are sequentially sleeved on the anchor rod along the direction close to the bearing plate, and the force measuring mechanism is abutted with the bearing plate; the first locking plate is used for being loaded between the first anchor and the anchor rod and enabling the first anchor to be anchored with the anchor rod when being loaded; the second locking plate is used for being loaded between the second anchor and the anchor rod and enabling the second anchor to be anchored with the anchor rod when being loaded. The construction device of the anchor rod internal force monitoring system is suitable for monitoring the internal force of the anchor rod with the tensioned construction completed, the support frame is installed on the anchor rod, and the anchor rod is pulled by the jacking mechanism, so that the original anchor device is overhead, the replacement of a new anchor device under the condition of not disassembling the original anchor device is realized, and the long-term monitoring of the internal force of the anchor rod can be realized through the force measuring mechanism installed between the bearing plate and the second anchor device.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a block diagram of a construction device of an anchor rod internal force monitoring system provided by an embodiment of the invention;
FIG. 2 is a block diagram of a support frame of a construction device of an anchor rod internal force monitoring system according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a force measuring mechanism of a construction device of an in-bolt force monitoring system according to an embodiment of the present invention;
FIG. 4 is a schematic diagram illustrating the installation of an elastic detection member of a construction device of an internal anchor rod force monitoring system according to an embodiment of the present invention;
fig. 5 is a block diagram of a second anchor and a jack-up mechanism of a construction device of an internal anchor force monitoring system according to an embodiment of the present invention.
Icon: 1-anchor rod; 2-waist beams; 3-cushion blocks; 4-wedge plate; 5-backing plate; 6-an elastic detection member; 7-diagonal bracing; 8-a bearing plate; 9-original anchorage; 10-an original locking plate; 11-a first anchor; 12-a first locking piece; 13-supporting feet; 14-a force measuring mechanism; 15-through holes; 16-a first fixing part; 17-a second fixing portion; 18-a jacking mechanism; 19-a second anchor; 20-a second locking piece.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1-5, during geotechnical engineering support construction, a free section of an anchor rod 1 extends out of a support pile, the anchor rod 1 is inclined, two waist beams 2 are arranged on the support pile at intervals, a cushion block 3 and a wedge-shaped plate 4 are sequentially arranged on the waist beams 2, a backing plate 5 and an original anchor 9 are arranged on the wedge-shaped plate 4, and after the anchor rod 1 sequentially passes through a gap between the two waist beams 2, the cushion block 3, the wedge-shaped plate 4 and the backing plate 5, the original anchor 9 and the anchor rod 1 are locked by an original locking plate 10 for supporting a slope and a tunnel.
The invention provides a construction method of an anchor rod internal force monitoring system, which is applied to a construction device of the anchor rod internal force monitoring system and comprises the following steps:
the support frame, the force measuring mechanism 14, the first anchor 11, the jacking mechanism 18 and the second anchor 19 are sequentially sleeved on the anchor rod 1 outside the original anchor 9.
Anchoring the second anchor 19 with the anchor rod 1; is loaded between the second anchor 19 and the bolt 1 by means of the second locking tab 20 and anchors the second anchor 19 to the bolt 1 when loaded.
The anchor rod 1 is tensioned by the jacking mechanism 18, the jacking mechanism 18 is a hollow jack, the jacking mechanism 18 drives the second anchor 19 to move in the direction away from the supporting frame, and the second anchor 19 is connected with the anchor rod 1 through the second locking plate 20, so that the original anchor 9 can be driven to move in the direction away from the backing plate 5.
Detecting the internal force of the anchor rod 1 through the force measuring mechanism 14, and anchoring the first anchorage device 11 with the anchor rod 1 when the internal force of the anchor rod 1 reaches a set pressure value; the load cell 14 may be a hollow load cell. As the original anchorage 9 is separated from the backing plate 5 after being tensioned, when the internal force of the anchor rod 1 reaches a set pressure value, the first anchorage 11 is locked with the anchor rod 1 by the first locking plate 12.
Finally, the second anchorage 19 and the jacking mechanism 18 are removed, and long-term monitoring of the internal force of the anchor rod 1 can be achieved by using the first anchorage 11, the force measuring mechanism 14 and the support frame mounted on the anchor rod 1.
According to the construction method of the anchor rod internal force monitoring system, the original anchor 9 is overhead through the supporting frame, the force measuring mechanism 14, the first anchor 11, the jacking mechanism 18 and the second anchor 19, so that the new anchor is replaced under the condition that the original anchor 9 is not dismounted, meanwhile, the long-term monitoring of the internal force of the anchor rod 1 can be realized through the force measuring mechanism 14, the construction is convenient, and the damage to a supporting structure is avoided.
The invention provides a construction device of an anchor rod internal force monitoring system, which comprises a support frame, a force measuring mechanism 14, a jacking mechanism 18, a first anchorage device 11, a second anchorage device 19, a first locking plate 12 and a second locking plate 20; the support frame comprises support feet 13 and a bearing plate 8; one end of the supporting leg 13 is connected with the bearing plate 8; the other end of the supporting leg 13 is used for being abutted with the backing plate 5, and a through hole for the anchor rod to pass through is formed in the bearing plate 8; when the anchor rod 1 penetrates into the through hole on the bearing plate 8, the second anchor 19, the jacking mechanism 18, the first anchor 11 and the force measuring mechanism 14 are sequentially sleeved on the anchor rod 1 along the direction close to the bearing plate 8, and the force measuring mechanism 14 is abutted with the bearing plate 8; the first locking plate 12 is used for being loaded between the first anchorage 11 and the anchor rod 1, and enables the first anchorage 11 to be anchored with the anchor rod 1 when being loaded; the second locking tab 20 is adapted to be loaded between the second anchor 19 and the bolt 1 and to anchor the second anchor 19 to the bolt 1 when loaded.
Specifically, a supporting frame is installed on the anchor rod 1 on the side of the original anchor 9 facing away from the backing plate 5, a force measuring mechanism 14 and a first anchor 11 are installed on the anchor rod 1 in sequence along the direction approaching to the bearing plate 8, a top supporting mechanism 18 and a second anchor 19 are installed, and the second anchor 19 is locked with the anchor rod 1 by a second locking plate 20; subsequently, the jacking mechanism 18 drives the second anchorage 19 to move in a direction away from the support frame, and the second anchorage 19 is connected with the anchor rod 1 through the second locking plate 20, so that the original anchorage 9 can be driven to move, the original anchorage 9 is separated from the backing plate 5, and when the internal force of the anchor rod 1 reaches a set pressure value, the first anchorage 11 is locked with the anchor rod 1 through the first locking plate 12; finally, the second anchorage 19 and the hollow jack are removed, and the first anchorage, the force measuring mechanism and the support frame which are arranged on the anchor rod can be used for realizing long-term monitoring of the internal force of the anchor rod.
The construction device of the anchor rod internal force monitoring system is suitable for anchor rod internal force monitoring after tensioning construction is completed, the support frame is installed on the anchor rod 1, the anchor rod 1 is pulled by the supporting mechanism 18, so that the original anchor 9 is overhead, replacement of a new anchor without disassembling the original anchor 9 is realized, and long-term monitoring of the internal force of the anchor rod 1 can be realized through the force measuring mechanism 14 installed between the bearing plate 8 and the second anchor 19.
Further, the construction means of the in-bolt force monitoring system comprises a displacement detection mechanism for detecting the distance between the original anchor 9 and the backing plate 5.
Specifically, the supporting feet 13 of the supporting frame are placed on the backing plate 5, the anchor rod 1 passes through the through holes 15 on the bearing plate 8, the force measuring mechanism 14, the first anchor 11, the jacking mechanism 18 and the second anchor 19 are sequentially installed, the second anchor 19 is fixedly connected with the anchor rod 1 by using the second locking plate 20, then the second anchor 19 connected with the second anchor 19 is driven by the jacking mechanism 18 so as to tension the anchor rod 1, the second anchor 19 has a tendency of driving the anchor rod 1 to move in a direction away from the original anchor 9, at the moment, the anchor rod 1 between the original anchor 9 and the jacking mechanism 18 is stressed gradually, and when the internal force of the anchor rod 1 is equal to the internal force of a free section of the anchor rod 1, the contact pressure between the original anchor 9 and the backing plate 5 is zero; with the continued increase of the pulling force, the original anchor 9 and the backing plate 5 are separated from each other to generate a gap, and the displacement detection mechanism can detect the size of the gap.
The displacement detection mechanism can be a detection ruler which is arranged on the backing plate 5 and along the length direction of the anchor rod, and the distance between the original anchorage 9 and the backing plate 5 is read through scales on the detection ruler.
The displacement sensor may be provided on the original anchor 9 or the backing plate 5, and may be capable of detecting the distance between the original anchor 9 and the backing plate 5.
The internal force value of the shank 1 can be obtained by the following formula (neglecting elastic deformation of the anchor): n=n 0 - αed/L, where N is the anchor rod 1 internal force; n 0 is the reading of the load cell 14; alpha is the number of steel strands or steel bars of the rod body of the anchor rod 1; e is the elastic modulus of the steel strand or the steel bar; d is the distance between the original anchorage 9 and the backing plate 5 detected by the displacement detection mechanism; l is the length of the free section of the anchor rod 1.
It should be noted that, if the internal force of the anchor rod 1 does not reach the design requirement value, the anchor rod 1 may be continuously tensioned to the design value, and the anchor rod 1 may be locked by the first locking plate 12 and the first anchor device 11, and in the tensioning process, the original anchor device 9 may be knocked to loosen, so as to prevent the original anchor device 9 from retracting when the internal force of the anchor rod 1 suddenly increases, so that the internal force value on the force measuring mechanism 14 is smaller than the actual value.
Preferably, the displacement detection mechanism comprises an elastic detection piece 6, the elastic detection piece 6 is connected with the backing plate 5, the elastic detection piece 6 is sleeved on the original anchorage device 11, and the elastic detection piece 6 is positioned at the joint of the original anchorage device 9 and the backing plate 5 and is abutted against the outer wall of the original anchorage device 9.
The elastic detecting member 6 has a set thickness, and when the distance between the original anchor 9 and the backing plate 5 reaches the thickness of the elastic detecting member 6, the elastic detecting member 6 can spring into the gap between the original anchor 9 and the backing plate 5.
Specifically, the elastic detection member 6 is attached to the side surface of the backing plate 5 facing the original anchor 9, both ends of the elastic detection member are connected with the backing plate 5, the middle portion of the elastic detection member 6 is attached to the outer wall of the original anchor 9, namely, at the joint of the original anchor 9 and the backing plate 5, and the elastic detection member 6 is subject to elastic force and has a tendency to move towards the center of the original anchor 9.
As shown in fig. 4, in this embodiment, the elastic detecting element 6 is an annular element, when in use, it is first sleeved on the original anchor 9, then is set at the joint of the original anchor 9 and the backing plate 5, and stretches and fixes the elastic detecting element 6 through the first fixing portion 16 and the second fixing portion 17 on the backing plate 5, so that the middle portion of the elastic detecting element is tightly attached to the outer wall of the original anchor 9, and can spring into the gap when the gap between the original anchor 9 and the backing plate 5 is equal to the thickness of the elastic detecting element 6.
It should be noted that, when the elastic detection member 6 has a certain thickness and the gap between the original anchor 9 and the backing plate 5 reaches the thickness of the elastic detection member 6, the elastic detection member 6 is sprung into the gap between the original anchor 9 and the backing plate 5 under the action of its elastic force, and at this time, the internal force value of the anchor rod 1 can be calculated by the above formula, where d in the formula is the thickness of the elastic detection member 6.
The elastic detecting member 6 is made of a material with elastic deformation capability, and can be a thin rubber band or a thin steel wire with two ends connected by a spring.
Preferably, the elastic detecting member 6 is a rubber band.
Specifically, the elastic detecting member 6 may be a rubber band, which is first sleeved on the original anchor 9, and then the rubber band is disposed at the junction between the original anchor 9 and the backing plate 5.
In this embodiment, the elastic band is not stretched too much, so long as the distance between the original anchor 9 and the backing plate 5 is equal to the thickness of the elastic band, and the elastic band can be sprung into the gap, so that the thickness change of the elastic band caused by elastic deformation is negligible.
Further, the load cell 14 is a hollow load cell.
In particular, the hollow dynamometer can be a JDMSJ-202 vibrating wire type anchor cable dynamometer, and is mainly used for measuring and monitoring various anchor rods, anchor cables, rock bolts, struts, tunnels and supports in underground chambers and loss conditions of loads and prestress in large-scale prestressed reinforced concrete structures (bridges, dams and the like). The hollow structure can eliminate the influence of uneven and eccentric load in three-string measurement, and has the advantages of long-term stability, high sensitivity, good waterproof performance and no influence of long cables.
Further, the jacking mechanism 18 is a hollow jack.
Specifically, the hollow jack is also called a penetration jack, and the hollow jack is a double-acting jack which stretches prestressed tendons and presses an anchor by using a double hydraulic cylinder. The hollow jack is suitable for stretching the steel bar bundles or the steel strand bundles of the anchor.
It should be noted that a hollow jack of the SL-RCH120 type may be used.
Further, the support frame comprises a diagonal bracing piece 7, one end of the diagonal bracing piece 7 is connected with one supporting foot 13, and the other end of the diagonal bracing piece 7 is connected with the bearing plate 8.
Specifically, the number of the diagonal members 7 is multiple, the diagonal members 7 are used for connecting the supporting legs 13 and the bearing plate 8, and the multiple diagonal members 7 are utilized to enable the supporting legs 13 to be connected with the bearing plate 8 more firmly, so that the stability of the supporting frame in use is improved.
The carrier plate 8 may be rectangular or may be other shapes, such as circular, hexagonal, etc.
Preferably, the carrier plate 8 has a rectangular shape, the number of support feet 13 being four, one support foot 13 being provided at each corner of the carrier plate 8.
In particular, the carrier plate 8 may be rectangular or square, one support leg 13 being provided at each corner of the carrier plate 8, two diagonal members 7 being provided between two support legs 13 on each side of the carrier plate 8.
The carrier plate 8 may have other shapes, and may be sufficient to support the hollow dynamometer.
Further, the plane of the bearing plate 8 is parallel to the plane of the backing plate 5.
Specifically, the bearing plate 8 is parallel to the backing plate 5, so that the hollow dynamometer arranged on the bearing plate 8 can conveniently detect the internal force value of the anchor rod 1, and the hollow jack and the second anchor 19 can be conveniently installed without performing excessive conversion.
In summary, according to the construction device of the anchor rod internal force monitoring system provided by the invention, the support frame is arranged on the anchor rod 1 at one side of the original anchor 9, which is opposite to the backing plate 5, the force measuring mechanism 14 and the first anchor 11 are arranged on the support frame, the supporting mechanism 18 and the second anchor 19 are arranged on the support frame, and the second anchor 19 is locked with the anchor rod 1 by the second locking plate 20; then, the jacking mechanism 18 works to drive the second anchorage 19 to move in a direction away from the supporting frame, and the second anchorage 19 is connected with the anchor rod 1, so that the original anchorage 9 can be driven to be separated from the backing plate 5, and when the internal force of the anchor rod 1 reaches a set pressure value, the first anchorage 11 is locked with the anchor rod 1 by the first locking plate 12; finally, the second anchorage 19 and the jack are removed, the original anchorage 9 is replaced by the first anchorage 11, the force measuring mechanism 14 and the supporting frame which are arranged on the anchor rod 1, and the long-term monitoring of the internal force of the anchor rod 1 can be realized through the force measuring mechanism 14.
The construction method of the anchor rod internal force monitoring system is suitable for monitoring the internal force of the anchor rod 1 after tensioning construction is completed, and the original internal force value of the anchor rod 1 during testing can be obtained through the time node of the original anchor 9 and the backing plate 5 under the condition that the original anchor 9 is not dismantled, and can be used for construction quality evaluation of a supporting structure, structural stability analysis, scientific research of the time effect of the internal force of the anchor rod 1 and the like. The long-term monitoring of the internal force of the anchor rod 1 is realized by the dynamometer arranged below the first anchorage device 11, and the defect that the drawing test can only obtain the internal force value of the anchor rod 1 at a certain moment is overcome.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (8)
1. The construction device of the anchor rod internal force monitoring system is characterized by comprising a support frame, a force measuring mechanism, a jacking mechanism, a first anchorage device, a second anchorage device, a first locking plate and a second locking plate;
The anchor rod sequentially passes through the original anchor device and the backing plate;
The support frame comprises support legs and a bearing plate; one end of the supporting leg is connected with the bearing plate;
the other end of the supporting leg is used for abutting against the surface, close to the original anchorage, of the base plate, and a through hole for the anchor rod to pass through is formed in the bearing plate;
when the anchor rod penetrates into the through hole on the bearing plate, the force measuring mechanism, the first anchor, the jacking mechanism and the second anchor are sequentially sleeved on the anchor rod along the direction close to the bearing plate, and the force measuring mechanism is abutted with the bearing plate;
the first locking plate is used for being loaded between the first anchor and the anchor rod and enabling the first anchor to be anchored with the anchor rod when being loaded;
The second locking plate is used for being loaded between the second anchor and the anchor rod and enabling the second anchor to be anchored with the anchor rod when being loaded;
the construction device of the anchor rod internal force monitoring system comprises a displacement detection mechanism, wherein the displacement detection mechanism is used for detecting the distance between an original anchor and the backing plate;
The displacement detection mechanism comprises an elastic detection piece, the elastic detection piece is connected with the base plate, the elastic detection piece is sleeved on the original anchor, and the elastic detection piece is positioned at the joint of the original anchor and the base plate and is abutted against the outer wall of the original anchor;
the elastic detection piece has a set thickness, and when the distance between the original anchor and the backing plate reaches the thickness of the elastic detection piece, the elastic detection piece can spring into a gap between the original anchor and the backing plate.
2. The apparatus for constructing an internal anchor rod force monitoring system according to claim 1, wherein the elastic detecting member is a rubber band.
3. The apparatus for constructing an in-bolt force monitoring system according to claim 1, wherein the force measuring mechanism is a hollow load cell.
4. The apparatus for constructing an internal anchor rod force monitoring system according to claim 1, wherein the jacking mechanism is a hollow jack.
5. The apparatus for constructing an in-bolt force monitoring system according to claim 1, wherein the supporting frame includes a diagonal member, one end of the diagonal member is connected to one of the supporting legs, and the other end of the diagonal member is connected to the loading plate.
6. The apparatus for constructing an in-bolt force monitoring system according to claim 1, wherein the carrier plate is rectangular, the number of the support legs is four, and each corner of the carrier plate is provided with one of the support legs.
7. The apparatus for constructing an in-bolt force monitoring system according to claim 1, wherein the plane of the load bearing plate is parallel to the plane of the shim plate.
8. A method of constructing an internal anchor force monitoring system using the construction apparatus of an internal anchor force monitoring system as claimed in any one of claims 1 to 7, comprising the steps of:
the support frame, the force measuring mechanism, the first anchorage device, the jacking mechanism and the second anchorage device are sequentially sleeved on the anchor rod outside the original anchorage device;
Anchoring the second anchor with the anchor rod;
Tensioning the anchor rod by using the jacking mechanism;
detecting the internal force of the anchor rod by using the force measuring mechanism, and anchoring the first anchor device with the anchor rod when the internal force of the anchor rod reaches a set pressure value;
And removing the second anchor and the jacking mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911215994.8A CN110761344B (en) | 2019-12-02 | 2019-12-02 | Method and device for constructing anchor rod internal force monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911215994.8A CN110761344B (en) | 2019-12-02 | 2019-12-02 | Method and device for constructing anchor rod internal force monitoring system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110761344A CN110761344A (en) | 2020-02-07 |
| CN110761344B true CN110761344B (en) | 2024-09-24 |
Family
ID=69340559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911215994.8A Active CN110761344B (en) | 2019-12-02 | 2019-12-02 | Method and device for constructing anchor rod internal force monitoring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110761344B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113482068A (en) * | 2021-07-24 | 2021-10-08 | 中铁广州工程局集团深圳工程有限公司 | Foundation pit support automatic monitoring system |
| CN113503180B (en) * | 2021-09-13 | 2021-11-16 | 徐州成瑞建筑科技研究院有限公司 | Anchor rod capable of displaying magnitude of tension borne by tail of anchor rod |
| CN114000550B (en) * | 2021-11-27 | 2023-03-21 | 广东居安建筑工程检测有限公司 | Foundation pit supporting anchor cable stress automatic monitoring system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107130651A (en) * | 2017-07-10 | 2017-09-05 | 河北建科唐秦建筑科技有限公司 | The detection means and its detection method of anchor pole internal force exterior measuring |
| CN211257108U (en) * | 2019-12-02 | 2020-08-14 | 山东建勘集团有限公司 | Building device of anchor rod internal force monitoring system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4511276B2 (en) * | 2004-08-03 | 2010-07-28 | ライト工業株式会社 | Anchor lift-off test equipment |
-
2019
- 2019-12-02 CN CN201911215994.8A patent/CN110761344B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107130651A (en) * | 2017-07-10 | 2017-09-05 | 河北建科唐秦建筑科技有限公司 | The detection means and its detection method of anchor pole internal force exterior measuring |
| CN211257108U (en) * | 2019-12-02 | 2020-08-14 | 山东建勘集团有限公司 | Building device of anchor rod internal force monitoring system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110761344A (en) | 2020-02-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110761344B (en) | Method and device for constructing anchor rod internal force monitoring system | |
| CN103076192A (en) | Portable performance test device for automatic control of combined action of bidirectional load of beam-column joint and determination method | |
| CN204530483U (en) | Capping construction support | |
| CN211257108U (en) | Building device of anchor rod internal force monitoring system | |
| CN107503386A (en) | Anchor rod body holds the detection means and detection method of load | |
| CN103837279A (en) | Prestress anchoring structure tensioning force detecting system based on single-freedom-degree system | |
| KR20180035427A (en) | Apparatus for pile load test | |
| KR100305107B1 (en) | an process of loading teste for loading structure use of transferable loading-apparatus | |
| CN107402155B (en) | Destruction test method and device for a column of a flood wall | |
| CN107059958B (en) | System and method for detecting tension of prestressed steel strand anchor cable | |
| CN105699190B (en) | A kind of experimental rig for testing FRP cloth stress relaxation | |
| CN109100232B (en) | Testing device for detecting vertical bearing capacity of climbing cone of bridge tower and using method | |
| Pang et al. | Full-size testing to determine stress concentration factors of dragline tubular joints | |
| CN205607767U (en) | Test FRP cloth stress relaxation's device | |
| CN209760227U (en) | prestressed anchor rod tensioning device of top pivoting frame of miter gate | |
| CN220708900U (en) | UHPC test piece tensile stress-strain full curve test fixture and test device | |
| RU188385U1 (en) | Installation for testing piles with static pressing load using anchor piles | |
| KR20120012842A (en) | On-Line Evaluation Technique of the Spring Support | |
| CN111766165B (en) | Prestressed tendon fatigue-stress relaxation test method for simulating actual service state | |
| JP2006220464A (en) | Anchor load measuring instrument, and anchor load measuring method | |
| CN105045944B (en) | A kind of engineering prestressing technique use state appraisal procedure | |
| KR100349246B1 (en) | an loading apparatus of transferable | |
| KR20190055960A (en) | Apparatus for pile load test | |
| CN222227391U (en) | A pile foundation pull-out performance testing device | |
| CN213926413U (en) | Combined small cross beam for single-pile static load test |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |