CN110761344A - Construction method and device of anchor rod internal force monitoring system - Google Patents
Construction method and device of anchor rod internal force monitoring system Download PDFInfo
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- CN110761344A CN110761344A CN201911215994.8A CN201911215994A CN110761344A CN 110761344 A CN110761344 A CN 110761344A CN 201911215994 A CN201911215994 A CN 201911215994A CN 110761344 A CN110761344 A CN 110761344A
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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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Abstract
The invention provides a construction method and a device of an anchor rod internal force monitoring system, relating to the technical field of rock and soil anchoring.A support frame, a force measuring mechanism, a first anchor device, a top bracing mechanism and a second anchor device are sequentially sleeved on an anchor rod outside an original anchor 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 with the anchor rod when the internal force of the anchor rod reaches a set pressure value; demolish the second ground tackle with the shoring mechanism, be applied to stock internal force monitoring system's construction equipment, can directly install the use on original ground tackle, it is built on stilts with original ground tackle through support frame, force measuring mechanism, first ground tackle, shoring mechanism and second ground tackle, realized changing new ground tackle under the circumstances of not dismantling original ground tackle, simultaneously, can realize the long-term monitoring to stock internal force through force measuring mechanism, construction convenience, and can not lead to the fact the harm to supporting construction.
Description
Technical Field
The invention relates to the technical field of rock and soil anchoring, in particular to a construction method and a 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 method for acquiring the internal force of the anchor rod generally comprises the following steps: in the construction process of the anchor rod, an anchor rod dynamometer is pre-installed between the anchor device and the base plate, and after the anchor head is anchored, the 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 the supporting construction of geotechnical engineering, the situation that the internal force of the constructed anchor rod needs to be monitored for a long time due to the change of a design scheme or the over-service of a supporting structure is sometimes encountered. Aiming at the situation, the existing operation method is to disassemble the anchorage device, then reinstall the dynamometer and stretch and lock, so that the construction is very inconvenient, and the supporting structure is damaged.
Disclosure of Invention
The invention aims to provide a construction method and a device of an anchor rod internal force monitoring system, which aim to solve the technical problems that the existing construction method needs to firstly disassemble an anchor device, then reinstall a dynamometer and stretch an anchor rod to lock, 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:
a support frame, a force measuring mechanism, a first anchor, a top bracing mechanism and a second anchor are sequentially sleeved on the anchor rod outside the original anchor;
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 with the anchor rod when the internal force of the anchor rod reaches a set pressure value;
and removing the second anchorage device and the top bracing mechanism.
The construction device of the anchor rod internal force monitoring system comprises a support frame, a force measuring mechanism, a jacking mechanism, a first anchor, a second anchor, a first locking plate and a second locking plate;
the supporting frame comprises supporting 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 base plate, and a through hole for the anchor rod to penetrate through is formed in the bearing plate;
when the anchor rod penetrates through the through hole in the bearing plate, the second anchorage device, the jacking mechanism, the first anchorage device 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 to the bearing plate;
the first locking piece is used for being loaded between the first anchorage device and the anchor rod and enabling the first anchorage device and the anchor rod to be anchored when the first locking piece is loaded;
the second locking piece is used for being loaded between the second anchor device and the anchor rod and enabling the second anchor device to be anchored with the anchor rod when the second locking piece is loaded.
Further, the construction device of the anchor rod internal force monitoring system comprises a displacement detection mechanism, and the displacement detection mechanism is used for detecting the distance between the original anchor and the base plate.
Furthermore, the displacement detection mechanism comprises an elastic detection piece, the elastic detection piece is connected with the backing 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 backing plate and is abutted against the outer wall of the original anchorage device;
the elastic detection piece has a set thickness, and when the distance between the original anchorage device and the backing plate reaches the thickness of the elastic detection piece, the elastic detection piece can be bounced into a gap between the original anchorage device and the backing plate.
Further, the elasticity detection piece is a rubber band.
Further, the force measuring mechanism is a hollow dynamometer.
Further, the jacking mechanism is a hollow jack.
Furthermore, the support frame comprises an inclined support piece, one end of the inclined support piece is connected with one of the supporting legs, and the other end of the inclined support piece is connected with the bearing plate.
Furthermore, the loading board is rectangular, the number of the supporting legs is four, and each corner of the loading board is provided with one supporting leg.
Furthermore, 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: a support frame, a force measuring mechanism, a first anchor, a top bracing mechanism and a second anchor are sequentially sleeved on the anchor rod outside the 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 with the anchor rod when the internal force of the anchor rod reaches a set pressure value; the construction method of the anchor rod internal force monitoring system is suitable for monitoring the internal force of the anchor rod after tensioning construction is completed, the original anchor rod is erected through the support frame, the force measuring mechanism, the first anchor rod, the top support mechanism and the second anchor rod, replacement of a new anchor rod is achieved under the condition that the original anchor rod is not detached, meanwhile, long-term monitoring on the internal force of the anchor rod can be achieved through the force measuring mechanism, construction is convenient, and damage to a supporting structure cannot be caused.
The construction device of the anchor rod internal force monitoring system comprises a support frame, a force measuring mechanism, a jacking mechanism, a first anchor, a second anchor, a first locking plate and a second locking plate; the supporting frame comprises supporting 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 base plate, and a through hole for the anchor rod to penetrate through is formed in the bearing plate; when the anchor rod penetrates through the through hole in the bearing plate, the second anchorage device, the jacking mechanism, the first anchorage device 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 to the bearing plate; the first locking piece is used for being loaded between the first anchorage device and the anchor rod and enabling the first anchorage device and the anchor rod to be anchored when the first locking piece is loaded; the second locking piece is used for being loaded between the second anchor device and the anchor rod and enabling the second anchor device to be anchored with the anchor rod when the second locking piece is loaded. The construction device of the anchor rod internal force monitoring system is suitable for monitoring the internal force of an anchor rod after tensioning construction is completed, the support frame is arranged on the anchor rod, the anchor rod is pulled by the jacking mechanism, so that an original anchor device is erected, replacement of a new anchor device is realized under the condition that the original anchor device is not disassembled, and long-term monitoring of the internal force of the anchor rod can be realized through the force measuring mechanism arranged 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 used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a structural diagram of a construction apparatus of an anchor rod internal force monitoring system according to an embodiment of the present invention;
fig. 2 is a structural 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 view of a force measuring mechanism of a construction device of the anchor rod internal force monitoring system provided by the embodiment of the invention;
fig. 4 is a schematic installation diagram of an elastic detection piece of a construction device of the anchor rod internal force monitoring system provided by the embodiment of the invention;
fig. 5 is a structural view of a second anchor and shoring-removing mechanism of a construction apparatus of an anchor rod internal force monitoring system according to an embodiment of the present invention.
Icon: 1-anchor rod; 2-waist rail; 3-cushion block; 4-a wedge-shaped plate; 5-backing plate; 6-elastic detection member; 7-diagonal stay; 8-a carrier plate; 9-original anchorage; 10-original locking plate; 11-a first anchorage; 12-a first locking tab; 13-supporting feet; 14-a force measuring mechanism; 15-a through hole; 16-a first fixed part; 17-a second fixed part; 18-a jacking mechanism; 19-a second anchorage; 20-second locking piece.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-5, during the geotechnical engineering support construction, a free section of an anchor rod 1 extends out of a support pile, the anchor rod 1 is usually inclined, two wales 2 are arranged on the support pile at intervals, a cushion block 3 and a wedge-shaped plate 4 are sequentially arranged on the wales 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 penetrates through a gap between the two wales 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 and are used for supporting a side 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:
a support frame, a force measuring mechanism 14, a first anchorage device 11, a top bracing mechanism 18 and a second anchorage device 19 are sequentially sleeved on the anchor rod 1 outside the original anchorage device 9.
Anchoring the second anchorage 19 to the anchor rod 1; the second anchor 19 is loaded between the second anchor 19 and the anchor bar 1 using the second locking tab 20 and the second anchor 19 is anchored to the anchor bar 1 when loaded.
Utilize shoring mechanism 18 stretch-draw stock 1, shoring mechanism 18 is hollow jack, and shoring mechanism 18 drive second ground tackle 19 removes to the direction of keeping away from the support frame, because of second ground tackle 19 is connected with stock 1 through second locking plate 20, so can drive original ground tackle 9 and remove to the direction of keeping away from 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 and the anchor rod 1 when the internal force of the anchor rod 1 reaches a set pressure value; the force measuring mechanism 14 may be a hollow force gauge. Because original ground tackle 9 can separate with backing plate 5 after receiving the stretch-draw, when the internal force of stock 1 reached the settlement pressure value, utilize first locking plate 12 to pin first ground tackle 11 with stock 1.
Finally, the second anchorage device 19 and the top bracing 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 device 11, the force measuring mechanism 14 and the support frame which are installed on the anchor rod 1.
According to the construction method of the anchor rod internal force monitoring system, the original anchor 9 is erected through the support frame, the force measuring mechanism 14, the first anchor 11, the top support mechanism 18 and the second anchor 19, replacement of a new anchor is achieved under the condition that the original anchor 9 is not disassembled, meanwhile, long-term monitoring of the internal force of the anchor rod 1 can be achieved through the force measuring mechanism 14, construction is convenient, and damage to a supporting structure cannot be caused.
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 anchor 11, a second anchor 19, a first locking piece 12 and a second locking piece 20; the supporting frame comprises supporting legs 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 abutting against 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 through the through hole in the bearing plate 8, the second anchorage device 19, the jacking mechanism 18, the first anchorage device 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 against the bearing plate 8; the first locking plate 12 is used for loading between the first anchor device 11 and the anchor rod 1 and anchoring the first anchor device 11 and the anchor rod 1 when loading; the second locking tab 20 is adapted to be loaded between the second anchor 19 and the anchor bar 1 and to anchor the second anchor 19 to the anchor bar 1 when loaded.
Specifically, a support frame is arranged on the anchor rod 1 on one side, opposite to the backing plate 5, of the original anchor device 9, a force measuring mechanism 14 and a first anchor device 11 are sequentially arranged on the anchor rod 1 along the direction close to the bearing plate 8, then a top bracing mechanism 18 and a second anchor device 19 are arranged, and the second anchor device 19 and the anchor rod 1 are locked by a second locking plate 20; then, the jacking mechanism 18 drives the second anchorage device 19 to move towards the direction far away from the support frame, and the second anchorage device 19 is connected with the anchor rod 1 through the second locking plate 20, so that the original anchorage device 9 can be driven to move, the original anchorage device 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 device 11 is locked with the anchor rod 1 through the first locking plate 12; and finally, the second anchorage device 19 and the hollow jack are removed, and the first anchorage device, the force measuring mechanism and the support frame which are arranged on the anchor rod are utilized to realize 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 monitoring the internal force of an anchor rod after tensioning construction is completed, a support frame is arranged on the anchor rod 1, the anchor rod 1 is pulled by using a jacking mechanism 18, so that an original anchor device 9 is erected, replacement of a new anchor device is realized under the condition that the original anchor device 9 is not disassembled, and long-term monitoring of the internal force of the anchor rod 1 can be realized through a force measuring mechanism 14 arranged between a bearing plate 8 and a second anchor device 19.
Further, the construction device of the anchor rod internal force monitoring system comprises a displacement detection mechanism, and the displacement detection mechanism is used for detecting the distance between the original anchorage device 9 and the backing plate 5.
Specifically, the supporting leg 13 of the supporting frame is placed on the backing plate 5, the anchor rod 1 penetrates through the through hole 15 on the bearing plate 8, the force measuring mechanism 14, the first anchor 11, the top bracing 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 top bracing mechanism 18 is used for driving the second anchor 19 connected with the top bracing mechanism so as to stretch the anchor rod 1, the second anchor 19 has a tendency of driving the anchor rod 1 to move towards a direction far away from the original anchor 9, at this time, the anchor rod 1 between the original anchor 9 and the top bracing mechanism 18 is gradually stressed, and when the internal force of the anchor rod 1 in the section is equal to the internal force of the free section of the anchor rod 1, the contact pressure between the original anchor 9 and the backing plate 5 is; with the continuous increase of the tensile force, the original anchorage device 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 of the original anchorage device 9 moving relative to the backing plate 5 is read through scales on the detection ruler.
It should be noted that a displacement sensor may be provided on the original anchor 9 or the pad 5, and the distance between the original anchor 9 and the pad 5 may be detected.
The internal force value of the shank of the anchor 1 can be obtained by the following formula (ignoring the elastic deformation of the anchor): N-N0α Ed/L, wherein N is the internal force of the anchor rod 1, N0The reading of the force measuring mechanism 14 is shown as α, the number of the steel strands or the steel bars of the anchor rod 1 is shown as E, the elastic modulus of the steel strands or the steel bars is shown as D, the distance between the original anchorage device 9 and the backing plate 5 is detected by the displacement detection mechanism, and the length of the free section of the anchor rod 1 is shown as L.
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 is locked by the first locking plate 12 and the first anchor device 11, and in the tensioning process, the original anchor device 9 may also be loosened by knocking the original anchor device 9, so as to prevent the original anchor device 9 from retracting when the internal force of the anchor rod 1 is suddenly increased, 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 first 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 detection member 6 has a set thickness, and when the distance between the original anchorage 9 and the backing plate 5 reaches the thickness of the elastic detection member 6, the elastic detection member 6 can be sprung into the gap between the original anchorage 9 and the backing plate 5.
Specifically, the elastic detection piece 6 is attached to the side face, facing the original anchorage device 9, of the backing plate 5, two ends of the elastic detection piece are connected with the backing plate 5, the middle portion of the elastic detection piece 6 is attached to the outer wall of the original anchorage device 9, namely, the elastic detection piece 6 is located at the joint of the original anchorage device 9 and the backing plate 5, and has a tendency of moving towards the center of the original anchorage device 9 under the action of elasticity.
As shown in fig. 4, in this embodiment, the elastic detection member 6 is a ring-shaped member, and when in use, the ring-shaped member is firstly sleeved on the original anchor 9, then is arranged at the joint of the original anchor 9 and the backing plate 5, and the elastic detection member 6 is fixed by stretching 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 detection member is tightly attached to the outer wall of the original anchor 9, and can be sprung into the gap when the gap between the original anchor 9 and the backing plate 5 is equal to the thickness of the elastic detection member 6.
It should be noted that the elastic detection member 6 has a certain thickness, and when 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 springs into the gap between the original anchor 9 and the backing plate 5 under the action of its elastic force, 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 detection member 6 is made of a material having elastic deformation capability, and may be a thin rubber band or a thin steel wire with two ends connected by a spring.
Preferably, the elastic detection member 6 is a rubber band.
Specifically, the elastic detection member 6 may be a rubber band, which is first sleeved on the original anchor 9 and then disposed at the joint of the original anchor 9 and the backing plate 5.
It should be noted that, in this embodiment, the stretching of the rubber band is not too large, as long as the distance between the original anchor 9 and the backing plate 5 is equal to the thickness of the rubber band, the rubber band can be bounced into the gap, and therefore, the change of the thickness of the rubber band caused by the elastic deformation can be ignored.
Further, the force measuring mechanism 14 is a hollow force gauge.
In particular, the hollow dynamometer may be a JDMSJ-202 vibrating wire anchor line dynamometer, which is mainly used to measure and monitor the loss of load and prestress in various anchor rods, anchor lines, rock bolts, pillars, supports in tunnels and underground caverns, and in large prestressed reinforced concrete structures (bridges, dams, etc.). The hollow structure and the three-chord measurement can eliminate the influence of uneven and eccentric load, and the cable 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.
The hollow jack is also called a center-penetrating jack, and is a double-acting jack for tensioning the prestressed rib and jacking the anchorage by using double hydraulic cylinders. The hollow jack is suitable for stretching a reinforcing steel bar bundle or a steel strand bundle of an anchorage device.
It should be noted that hollow jack of SL-RCH120 model can be selected.
Furthermore, the support frame comprises a diagonal support member 7, one end of the diagonal support member 7 is connected with one support leg 13, and the other end of the diagonal support member 7 is connected with the bearing plate 8.
Specifically, the quantity of diagonal brace piece 7 is a plurality of, and diagonal brace piece 7 is used for connecting supporting legs 13 and loading board 8, utilizes a plurality of diagonal brace pieces 7 that set up to make supporting legs 13 and 8 of loading board be connected more firmly, improve the stability of support frame when using.
The carrier plate 8 may be rectangular, but may also be of other shapes, such as circular, hexagonal, etc.
Preferably, the carrier plate 8 is rectangular, the number of support feet 13 is four, and one support foot 13 is provided at each corner of the carrier plate 8.
Specifically, the bearing plate 8 may be rectangular or square, one supporting leg 13 is disposed at each corner of the bearing plate 8, and two diagonal supporting members 7 are disposed between two supporting legs 13 on each side of the bearing plate 8.
It should be noted that the carrier plate 8 may also have other shapes, which may be sufficient for supporting the air dynamometer.
Further, the plane of the bearing plate 8 is parallel to the plane of the backing plate 5.
Specifically, bearing plate 8 is parallel with backing plate 5, conveniently sets up the hollow dynamometer on bearing plate 8 and detects the internal force value of stock 1, need not do other too much conversions again, also easy to assemble hollow jack and second ground tackle 19.
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 on the side of the original anchor device 9 opposite to the backing plate 5, the force measuring mechanism 14 and the first anchor device 11 are arranged on the support frame, the top bracing mechanism 18 and the second anchor device 19 are arranged in the support frame, and the second anchor device 19 and the anchor rod 1 are locked by the second locking plate 20; then, the top bracing mechanism 18 works to drive the second anchorage device 19 to move towards the direction far away from the support frame, the original anchorage device 9 can be driven to be separated from the backing plate 5 because the second anchorage device 19 is connected with the anchor rod 1, and when the internal force of the anchor rod 1 reaches a set pressure value, the first anchorage device 11 is locked with the anchor rod 1 by using the first locking plate 12; and finally, removing the second anchorage device 19 and the jack, replacing the original anchorage device 9 by using the first anchorage device 11, the force measuring mechanism 14 and the support frame which are arranged on the anchor rod 1, and realizing long-term monitoring of the internal force of the anchor rod 1 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 the tensioning construction is finished, the original internal force value of the anchor rod 1 during the test can be obtained through the time node of the detachment of the original anchor 9 and the base plate 5 under the condition that the original anchor 9 is not detached, and the value can be used for supporting structure construction quality evaluation, structural stability analysis, scientific research on 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 through the dynamometer arranged below the first anchorage device 11, and the defect that the internal force value of the anchor rod 1 at a certain moment can only be obtained in a drawing test is overcome.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A construction method of an anchor rod internal force monitoring system is characterized by comprising the following steps:
a support frame, a force measuring mechanism, a first anchor, a top bracing mechanism and a second anchor are sequentially sleeved on the anchor rod outside the original anchor;
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 with the anchor rod when the internal force of the anchor rod reaches a set pressure value;
and removing the second anchorage device and the top bracing mechanism.
2. The device for constructing the anchor rod internal force monitoring system is characterized by comprising a support frame, a force measuring mechanism, a jacking mechanism, a first anchor, a second anchor, a first locking plate and a second locking plate;
the supporting frame comprises supporting 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 base plate, and a through hole for the anchor rod to penetrate through is formed in the bearing plate;
when the anchor rod penetrates through the through hole in the bearing plate, the second anchorage device, the jacking mechanism, the first anchorage device 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 to the bearing plate;
the first locking piece is used for being loaded between the first anchorage device and the anchor rod and enabling the first anchorage device and the anchor rod to be anchored when the first locking piece is loaded;
the second locking piece is used for being loaded between the second anchor device and the anchor rod and enabling the second anchor device to be anchored with the anchor rod when the second locking piece is loaded.
3. The apparatus of claim 2, wherein the apparatus comprises a displacement detection mechanism for detecting a distance between the primary anchor and the backing plate.
4. The device for constructing the anchor rod internal force monitoring system according to claim 3, wherein the displacement detecting mechanism comprises an elastic detecting piece, the elastic detecting piece is connected with the backing plate, the elastic detecting piece is sleeved on the first anchor device, and the elastic detecting piece is positioned at the joint of the original anchor device and the backing plate and is abutted against the outer wall of the original anchor device;
the elastic detection piece has a set thickness, and when the distance between the original anchorage device and the backing plate reaches the thickness of the elastic detection piece, the elastic detection piece can be bounced into a gap between the original anchorage device and the backing plate.
5. The device for constructing an anchor rod internal force monitoring system according to claim 4, wherein the elastic detection member is a rubber band.
6. The apparatus of claim 2, wherein the force measuring mechanism is a hollow force gauge.
7. The apparatus for constructing an anchor rod internal force monitoring system according to claim 2, wherein the shoring mechanism is a hollow jack.
8. The anchor rod internal force monitoring system construction device according to claim 2, wherein the support frame comprises diagonal support members, one ends of the diagonal support members are connected with one of the support legs, and the other ends of the diagonal support members are connected with the bearing plate.
9. The device for constructing the anchor rod internal force monitoring system according to claim 2, wherein the bearing plate is rectangular, the number of the supporting legs is four, and one supporting leg is provided at each corner of the bearing plate.
10. The apparatus of claim 2, wherein the plane of the bearing plate is parallel to the plane of the backing plate.
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| CN201911215994.8A CN110761344A (en) | 2019-12-02 | 2019-12-02 | Construction method and device of anchor rod internal force monitoring system |
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| CN201911215994.8A CN110761344A (en) | 2019-12-02 | 2019-12-02 | Construction method and device of anchor rod internal force monitoring system |
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| 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 |
| CN113503180A (en) * | 2021-09-13 | 2021-10-15 | 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 |
| CN114000550A (en) * | 2021-11-27 | 2022-02-01 | 广东居安建筑工程检测有限公司 | Anchor cable stress automatic monitoring system for foundation pit support |
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| 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 |
| CN113503180A (en) * | 2021-09-13 | 2021-10-15 | 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 |
| 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 |
| CN114000550A (en) * | 2021-11-27 | 2022-02-01 | 广东居安建筑工程检测有限公司 | Anchor cable stress automatic monitoring system for foundation pit support |
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