CN113687607A - Remote monitoring system of recoverable multistage self-adaptation inflation stock crowd - Google Patents
Remote monitoring system of recoverable multistage self-adaptation inflation stock crowd Download PDFInfo
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- CN113687607A CN113687607A CN202110702835.1A CN202110702835A CN113687607A CN 113687607 A CN113687607 A CN 113687607A CN 202110702835 A CN202110702835 A CN 202110702835A CN 113687607 A CN113687607 A CN 113687607A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/10—Miscellaneous comprising sensor means
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
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- G05B2219/23051—Remote control, enter program remote, detachable programmer
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Abstract
The invention discloses a remote monitoring system for a recoverable multi-section self-adaptive expansion anchor rod group, which belongs to the technical field of building data monitoring and comprises a remote monitoring center, a data transmission module and a plurality of expansion anchor rod data detection processing devices, wherein the data transmission module is wirelessly connected with the remote monitoring center, the data transmission module is arranged on one expansion anchor rod data detection processing device, the expansion anchor rod data detection processing device comprises a data processing and sending device and an anchor rod data detection device, the anchor rod data detection device is connected with the data processing and sending device, and the data transmission module is connected with the data processing and sending device. Through carrying out wireless network deployment with the stock in a building site to can transmit data each other, transmit the data that detect each other, then pass through a wireless module and give long-range management center, the management center can long-range real-time check the acceptance data of stock, has realized long-range detection and management to the stock data, makes management convenience more and swift.
Description
Technical Field
The invention relates to the technical field of building data monitoring, in particular to a remote monitoring system for a recyclable multi-section self-adaptive expansion anchor rod group.
Background
In the process of slope support construction, anchor bolt support is needed to reinforce the rock mass. The stress state of the anchor rod is related to the safety of the rock mass, so that the anchor rod needs to be subjected to stress detection, and the normal work of the anchor rod is ensured. The existing anchor rod stress detection device lacks a device for detecting the pressure of the anchor rod, so that the device can only detect the tension of the anchor rod, and the stress condition of the anchor rod cannot be comprehensively monitored. Therefore, when some anchor rods are damaged and the stress is not satisfactory, the damage cannot be found in time, and therefore accidents are easy to happen in construction. The existing anchor rod is not only free of a detection device, but also is free of a system for remotely detecting the anchor rod in real time, so that a system for remotely monitoring the acceptance data of the anchor rod in real time needs to be designed, the safety of construction in a construction site can be improved, and meanwhile, data can be remotely collected in real time.
Disclosure of Invention
The invention aims to provide a remote monitoring system capable of recycling a multi-section self-adaptive expansion anchor rod group, and solves the technical problem that the existing anchor rod cannot realize remote detection of accepted data.
The utility model provides a remote monitering system of recoverable multistage self-adaptation inflation stock crowd, including the remote monitoring center, data transmission module and a plurality of inflation stock data detection processing apparatus, data transmission module and remote monitoring center wireless connection, data transmission module sets up on an inflation stock data detection processing apparatus, inflation stock data detection processing apparatus includes data processing transmitting device and stock data detection device, stock data detection device is connected with data processing transmitting device, data transmission module is connected with data processing transmitting device.
Further, the data processing and sending device comprises a data acquisition module, a data processor and a ZigBee module, the acquisition end of the data acquisition module is connected with the anchor rod data detection device, the output end of the data acquisition module is connected with the data processor, the ZigBee module is connected with the data processor, and the ZigBee modules of the expansion anchor rod data detection and processing devices are mutually networked and transmit data to the data transmission module.
Further, the data transmission module is a 4G module and is used for transmitting the detection data to a remote monitoring center, the remote monitoring center is used for storing the detection data and comparing the detection data with a set alarm value, and when a set value with small stress is detected, an alarm is given out and a manager is prompted as to which anchor rod.
Further, stock data detection device includes the stock shell, the inside hollow structure that sets up of stock shell, the concrete that pours into in the stock shell, the stock shell sets up in the drilling of soil body, the stock shell includes a plurality of sections internal thread section and a plurality of section inflation section, be provided with one section inflation section between two sections internal thread sections, the both ends of stock shell all set up internal thread section, the stock shell installation advances internal back of soil, the inflation section outwards draws to stretch and closely laminates with the soil body, with soil body anchor.
Furthermore, a non-expansion section pressure sensor is arranged on the outer side of the internal thread section and used for detecting the pressure of an external soil body and the non-expansion section of the internal thread section, an expansion section pressure sensor and a bending soft angular displacement sensor are arranged on the outer side of the section expansion section, the expansion section pressure sensor is arranged on the front half section of the outer side of the section expansion section and used for detecting the pressure of the external soil body and the section expansion section, the bending soft angular displacement sensor is used for detecting the bending angle of the section expansion section, and then the pressure of the expansion section pressure sensor is subjected to support leg decomposition according to the bending angle to obtain the pressure of the expansion section and the positive pressure of the external soil body.
Further, the expansion section is arranged to be of a hollow pipe structure, a plurality of grouting holes are formed in the side wall of the expansion section, the grouting holes are arranged to be of an oval structure, the outer portion of the inner thread section is arranged to be of a closed structure, inner threads are arranged inside the inner thread section, and the thickness of the inner thread section is thicker than that of the expansion section.
Further, the process of detecting the data by the anchor rod data detecting device is,
step 1: detecting the external friction resistance strength of the internal thread section of the anchor rod, and then calculating the anti-pulling force of the internal thread section according to the external friction resistance strength;
step 2: detecting the external friction strength of the expansion section of the anchor rod, and then calculating the pulling resistance of the expansion section according to the external friction strength;
and step 3: detecting the positive pressure of the soil body at the front end outside the expansion section of the anchor rod on the expansion end surface;
and 4, step 4: and (3) the sum of the detected positive pressures of the pullout resistance of all the internal thread sections, the pullout resistance of all the expansion sections and the total pullout resistance is the force borne by the anchor rod.
Further, in the step 1, firstly, collecting a soil structure of a construction site, drilling a hole, wherein the soil structure of the construction site is not damaged, then placing an expansion anchor rod into the hole, wherein the length of the hole of the soil structure is the same as that of a section of internal thread section, applying pressure to the periphery of the soil structure by using a pressure device outside the soil structure, then applying a drawing device at one end of the expansion anchor rod, arranging a dynamometer on the drawing device and the expansion anchor rod, applying different external forces to the soil structure, recording stress data of the dynamometer, then calculating a friction resistance table under corresponding pressure according to the stress data and the applied pressure, and then placing the pressure detected by a pressure sensor at a non-expansion section into the friction resistance table to find out corresponding friction resistance strength;
the process of calculating the pulling resistance of the internal thread section according to the friction resistance intensity comprises the following steps: the T1 provides the pull-out resistance for the side wall friction of the L1 section common non-expansion anchoring section:
T1＝πD1L1τf (1)
in the formula: d1 and L1 are the diameter and length of the non-expansion anchoring section of the anchor rod, taufThe friction resistance strength between the soil body of the non-expansion anchoring section and the side wall of the anchoring rib is obtained.
Further, in step 2, firstly, collecting a soil structure of a construction site, drilling a hole, wherein the soil structure of the construction site is not damaged, then placing an expansion anchor rod into the hole, wherein the length of the hole of the soil structure is the same as that of one expansion section, applying pressure to the periphery of the soil structure by using a pressure device outside the soil structure, then drawing and expanding the expansion section, then applying a drawing device at one end of the expansion anchor rod, the drawing device and the expansion anchor rod are provided with a dynamometer, then applying different external forces to the soil structure, recording stress data of the dynamometer, detecting the pressure of an external soil body and the expansion section by using an expansion section pressure sensor, detecting the bending angle of the expansion section by using a bending soft angle displacement sensor, then performing support leg decomposition on the pressure of the expansion section pressure sensor according to the bending angle, and obtaining the pressure of the expansion section and the positive pressure of the external soil body, then subtracting positive pressure from data of the dynamometer to obtain the withdrawal resistance of the section expansion section, then calculating a corresponding friction strength meter under the pressure according to the withdrawal resistance data and the applied pressure, and then putting the pressure detected by the expansion section pressure sensor into the friction strength meter to find out the corresponding friction strength;
the anti-pulling force process of the expansion section is calculated according to the external friction resistance strength:
t2 is the anti-pulling force that stock inflation anchor section lateral wall friction provided:
T2＝πD2L2τfd (2)
wherein D2 and L2 are the diameter and length of the non-expansion anchoring section of the anchor rod, taufdThe friction resistance strength between the soil body of the non-expansion anchoring section and the side wall of the anchoring rib is obtained.
By adopting the technical scheme, the invention has the following technical effects:
according to the invention, the anchor rods in a construction site are wirelessly networked, so that data can be transmitted among the anchor rods, the detected data are mutually transmitted and then transmitted to a remote management center through a wireless module, the management center can remotely check the acceptance data of the anchor rods in real time, the remote detection and management of the anchor rod data are realized, and the management is more convenient and quicker.
Drawings
FIG. 1 is a block diagram of the system of the present invention.
Fig. 2 is a schematic structural diagram of the expansion anchor shell of the invention.
Fig. 3 is a schematic structural view of the tension device of the present invention.
Reference numbers in the figures: 1-a bolt housing; 1.1-removable disks; 1.2-internal thread section; 1.3-an expansion section; 1.4-grouting holes; 1.5-expansion section pressure sensor; 1.6-bending soft angular displacement sensor; 1.7-non-expansion segment pressure sensor; 2-a tension device; 2.1-front rotating plate; 2.2-front end main rod; 2.3-front end thread; 2.4-rear rotating plate; 2.5-rear end rotating rod; 2.6-rear end main rod; 2.7-back end threading.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, preferred embodiments are given and the present invention is described in further detail. It should be noted, however, that the numerous details set forth in the description are merely for the purpose of providing the reader with a thorough understanding of one or more aspects of the present invention, which may be practiced without these specific details.
The utility model provides a remote monitering system of recoverable multistage self-adaptation inflation stock crowd, as shown in figure 1, including remote monitoring center, data transmission module and a plurality of inflation stock data detection processing apparatus, data transmission module and remote monitoring center wireless connection, data transmission module sets up on an inflation stock data detection processing apparatus, inflation stock data detection processing apparatus includes data processing transmitting device and stock data detection device, stock data detection device is connected with data processing transmitting device, data transmission module is connected with data processing transmitting device. The remote monitoring center is a management computer, an alarm is arranged after the remote monitoring center is finished, when the transmitted data is compared with the set data, when the transmitted data is smaller than the set data, the alarm gives an alarm, and meanwhile, the alarm specifically indicates that one anchor rod is taken, and a maintainer can maintain the anchor rod timely and simultaneously. The method has the advantages of remote data acquisition and remote management.
In the embodiment of the invention, the data processing and sending device comprises a data acquisition module, a data processor and a ZigBee module, wherein the acquisition end of the data acquisition module is connected with the anchor rod data detection device, the output end of the data acquisition module is connected with the data processor, the ZigBee module is connected with the data processor, and the ZigBee modules of the expansion anchor rod data detection and processing devices are mutually networked and transmit data to the data transmission module. The data transmission module is a 4G module and is used for transmitting the detection data to the remote monitoring center, the remote monitoring center is used for storing the detection data and comparing the detection data with a set alarm value, and when a set value with small stress is detected, an alarm is given out and a manager is prompted as to which anchor rod. The data processing and sending device is arranged as a fixed shell and then is connected with a sensor inside the anchor rod data detection device through a wire, and the wire is wired inside the anchor rod shell 1 and is realized through a reserved groove. The data processor is the smallest system of the STM32 series, and mainly has enough IO quantity. Mutual data transmission is realized by networking the ZigBee modules, so that the ZigBee system is more convenient and simpler in company construction.
In the embodiment of the invention, as shown in fig. 2, the anchor rod data detection device comprises an anchor rod shell 1, the interior of the anchor rod shell 1 is provided with a hollow structure, concrete is injected into the anchor rod shell 1, the anchor rod shell 1 is arranged in a drill hole of a soil body, the anchor rod shell 1 comprises a plurality of sections of internal thread sections 1.2 and a plurality of sections of expansion sections 1.3, a section of expansion section 1.3 is arranged between the two sections of internal thread sections 1.2, the two ends of the anchor rod shell 1 are both provided with the internal thread sections 1.2, and after the anchor rod shell 1 is installed in the soil body, the expansion sections 1.3 are outwards tensioned to be tightly attached to the soil body and anchored with the soil body. The outer side of the internal thread section 1.2 is provided with a non-expansion section pressure sensor 1.7, the non-expansion section pressure sensor 1.7 is used for detecting the non-expansion section pressure of an external soil body and the internal thread section 1.2, the outer side of the section expansion section 1.3 is provided with an expansion section pressure sensor 1.5 and a bending soft angle displacement sensor 1.6, the expansion section pressure sensor 1.5 is arranged at the front half section of the outer side of the section expansion section 1.3, the expansion section pressure sensor 1.5 is used for detecting the pressure of the external soil body and the section expansion section 1.3, the bending soft angle displacement sensor 1.6 is used for detecting the bending angle of the section expansion section 1.3, and then the pressure of the expansion section pressure sensor 1.5 is subjected to support leg decomposition according to the bending angle to obtain the pressure of the expansion section and the positive pressure of the external soil body. Inflation section 1.3 sets up to empty pipe structure, is provided with a plurality of injected hole 1.4 on the lateral wall, and injected hole 1.4 sets up to oval structure, and the outside of internal thread section 1.2 sets up to the enclosed construction, and inside is provided with the internal thread, and the thickness of internal thread section 1.2 is thicker than inflation section 1.3's thickness.
In the embodiment of the invention, the process of detecting data by the anchor rod data detection device comprises the following steps,
step 1: the external friction resistance strength of the internal thread section 1.2 of the anchor rod is detected, and then the pulling resistance of the internal thread section 1.2 is calculated according to the external friction resistance strength. Gather the soil structure of construction site earlier and do the experiment, change the hole, the soil structure of construction site does not damage, then put the inflation stock in the commentaries on classics hole, the commentaries on classics hole length of soil structure is the same with the length of one section internal thread section 1.2, use pressure device to exert pressure around the soil structure outside the soil structure, then apply drawing device in the one end of inflation stock, and drawing device is provided with the dynamometer with the inflation stock, then exert different external forces to the soil structure, the atress data of record dynamometer, then calculate the friction resistance table under the corresponding pressure according to atress data and applied pressure, then put into the friction resistance table to non-inflation section pressure sensor 1.7 detection pressure and find out corresponding friction resistance intensity. The large data of the friction resistance strength of each construction site is determined mainly through experimental data, and the data in the following detection is more accurate.
The process of calculating the pulling resistance of the internal thread section 1.2 according to the friction resistance intensity is as follows: the T1 provides the pull-out resistance for the side wall friction of the L1 section common non-expansion anchoring section:
T1＝πD1L1τf (1)
in the formula: d1 and L1 are the diameter and length of the non-expansion anchoring section of the anchor rod, taufThe friction resistance strength between the soil body of the non-expansion anchoring section and the side wall of the anchoring rib is obtained. Since the received pressure of each internal thread section 1.2 is not necessarily the same, it is necessary to perform detection and calculation for each section, and the detected data is more accurate.
Step 2: and detecting the external friction strength of the expansion section 1.3 of the anchor rod, and then calculating the pulling resistance of the expansion section 1.3 according to the external friction strength. Firstly, collecting a soil structure of a construction site, turning a hole, wherein the soil structure of the construction site is not damaged, then placing an expansion anchor rod into the turning hole, wherein the length of the turning hole of the soil structure is the same as that of a section of expansion section 1.3, applying pressure to the periphery of the soil structure by using a pressure device outside the soil structure, then drawing and expanding the expansion section 1.3, then applying a drawing device at one end of the expansion anchor rod, the drawing device and the expansion anchor rod are provided with a dynamometer, then applying different external forces to the soil structure, recording stress data of the dynamometer, detecting the pressure of an external soil body and the section of expansion section 1.3 by an expansion section pressure sensor 1.5, detecting the bending angle of the section of expansion section 1.3 by a bending soft angle displacement sensor 1.6, then carrying out support leg decomposition on the pressure of the expansion section pressure sensor 1.5 according to the bending angle, and obtaining the pressure of the expansion section and the external soil body positive pressure, then subtracting positive pressure from data of the dynamometer to obtain the anti-pulling force of the section expansion section 1.3, then calculating a corresponding friction strength table under pressure according to the anti-pulling force data and the applied pressure, and then putting the pressure detected by the expansion section pressure sensor 1.5 into the friction strength table to find out the corresponding friction strength. The anti-pulling force process of the expansion section 1.3 is calculated according to the external friction resistance intensity as follows:
t2 is the anti-pulling force that stock inflation anchor section lateral wall friction provided:
T2＝πD2L2τfd (2)
wherein D2 and L2 are the diameter and length of the non-expansion anchoring section of the anchor rod, taufdThe friction resistance strength between the soil body of the non-expansion anchoring section and the side wall of the anchoring rib is obtained.
And step 3: and detecting the positive pressure of the soil body at the external front end of the expansion section 1.3 of the anchor rod on the expansion end surface.
And 4, step 4: and (3) the sum of the detected positive pressures of the pullout resistance of all the internal thread sections 1.2, the pullout resistance of all the expansion sections 1.3 and the total pullout resistance is the force borne by the anchor rod. The positive pressure data can be obtained by directly decomposing and calculating after the sensor detects the positive pressure data, so that the positive pressure data can be directly obtained, and only the other two withdrawal resistances need to be calculated.
The construction process of the expansion anchor rod is that according to the length of the expansion anchor rod shell, a drill bit is adopted to drill an anchor rod hole matched with the expansion anchor rod shell on the surrounding rock. When the expansion anchor rod needs to be recovered, after the linear hole is drilled, large holes are drilled at intervals in the drilled linear hole by using the expansion head type drill bit, and the expansion holes are matched with the expansion section of the expansion anchor rod shell after being expanded. The length process of the expansion anchor rod shell is determined as follows: and calculating the total drawing force required by each expansion anchor rod according to the total drawing force required by the soil body and the quantity of the expansion anchor rods, analyzing the stress of each expansion section, and dividing the drawing force by the stress of each expansion section to obtain the number of the expansion sections so as to obtain the length of the expansion anchor rod shell.
Put into the stock downthehole with stock inflation shell, stock head department consolidates the clamp plate to in screwing into stock inflation shell the tension device, rotate the tension device, pressurize the stock shell, make the inflation section inflation, with the ground laminating on every side, take out the screw rod.
The tension device comprises a front-end rotating plate 2.1, a front-end main rod 2.2, front-end threads 2.3, a rear-end rotating plate 2.4, a rear-end rotating rod 2.5, a rear-end main rod 2.6 and rear-end threads 2.7, the front-end rotating plate 2.1 is arranged at one end of the front-end main rod 2.2, the front-end threads 2.3 are arranged on the side wall of the other end of the front-end main rod 2.2, a through hole is formed in the middle of the front-end main rod 2.2, the rear-end rotating rod 2.5 penetrates through the through hole, the rear-end rotating plate 2.4 is arranged at one end of the front-end main rod 2.2, the rear-end main rod 2.6 is arranged at the other end of the front-end main rod 2.2, the size of the rear-end main rod 2.6 is the same as that of the front-end main rod 2.2, and the rear-end threads 2.7 are arranged on the rear-end main rod 2.6. The interval between the expanding holes is the same as the length of the internal thread section 1.2, and the height of the expanding holes is smaller than the length of the expansion section 1.3.
The specific working process of the tension device is as follows: the front end thread 2.3 on the front end main rod 2.2 is in threaded connection with the first internal thread section 1.2 at the inlet of the anchor rod shell 1, then the rear end thread 2.7 on the rear end main rod 2.6 is screwed to be in threaded connection with the second thread section 1.2, then the front end rotating plate 2.1 is fixed, the rear end rotating plate 2.4 is pulled outwards, the expansion section 1.3 between the first internal thread section 1.2 and the second thread section 1.2 expands to be matched with the expansion hole, all the expansion sections 1.3 are pulled to expand in the same way, and the internal thread section 1.2 is accurately pulled between the two expansion holes by measuring and calculating the distance of the rear end rotating plate 2.4 pulled outwards.
And step 3: pouring concrete into the anchor rod expansion shell, filling the expansion part of the expansion section with the concrete, and forming transverse resistance with the soil body after the concrete is solidified. The expansion section 1.3 is arranged to be of an empty pipe structure, a plurality of grouting holes 1.4 are formed in the side wall, and the grouting holes 1.4 are arranged to be of an oval structure. The structure is oval at first, when the tensile appears, can become circular structure for the better combination with the soil body of pouring the outside of flowing out of slip casting hole 1.4 of concrete. The outside of internal thread section 1.2 sets up to enclosed construction, and inside is provided with the internal thread, and the thickness of internal thread section 1.2 is thicker than the thickness of inflation section 1.3. The female thread section 1.2 is provided thicker in order to avoid deformation during installation and stretching.
In the embodiment of the invention, when the anchor rod shell 1 is grouted, the arranged grouting mechanism is screwed into the anchor rod shell 1, the interior of the grouting mechanism is arranged to be a hollow structure and comprises a thread protection section and a grouting section, the thread protection section and the grouting section are arranged at intervals, a grouting leak hole is formed in the grouting section, the thread protection section and an internal thread section 1.2 of the anchor rod shell 1 are in thread arrangement, the length of the thread protection section is the same as that of the internal thread section 1.2, cement slurry is injected from the hollow shell body in the grouting mechanism, and the cement slurry flows into the expansion section 1.3 of the anchor rod shell 1 from the grouting leak hole and flows into an external soil body from the grouting hole 1.4. And after grouting is finished, screwing out the grouting mechanism after cement slurry is changed into solid from slurry for 1-2 hours, and screwing in the screw. During grouting, a special grouting structure is adopted, the grouting hole is aligned, grouting is conducted outwards, the situation that slurry pollutes internal threads, a tension rod behind the tension rod cannot be twisted in, or a drill bit matched with the threads is adopted is prevented.
After the use, when needing to retrieve, put into the expansion drill bit from the centre bore, the expansion drill bit corotation in stock shell 1 breaks intraductal grout, the bottom concrete is clear away in the reversal after arriving stock shell 1 bottom, break the grout that the bottom was poured, then turn into the recovery screw rod to the screw thread end tail section, strike downwards, use data detection device to detect inflation section pressure sensor 1.5 and crooked soft angular displacement sensor 1.6 while strikeing, look over each section inflation section 1.3's bond strength and bending degree data, make the expanding structure resume straight again, extract the stock.
An expanding drill bit is placed into a middle hole of the anchor rod shell 1, the expanding drill bit rotates forwards in the anchor rod shell 1 to break cement paste in the pipe and at the bottom of the anchor rod shell 1, then the expanding drill bit rotates backwards to remove concrete crushed materials at the bottom, a tension device is twisted into the anchor rod shell 1 to straighten the anchor rod shell 1 downwards, then the anchor rod shell 1 has no transverse resistance of a soil body, the anchor rod shell 1 is taken out, and recovery is completed. The outer diameter of the expanding drill bit is equal to the inner diameter of the anchor rod shell 1. The damage to the thread caused by the enlarged drill bit is prevented, and the concrete can be cleaned.
The specific process of straightening the anchor rod shell 1 by the tensioning device is as follows: screwing the rear main rod 2.6 into the internal thread section 1.2 at the bottommost of the anchor rod shell 1, screwing the front thread 2.3 of the front main rod 2.2 onto the internal thread section 1.2 at the penultimate section, fixing the rotary plate 2.1 at the fixed end, fixing the front main rod 2.2, and pressing the rear rotary plate 2.4 downwards with force to enable the internal thread section 1.2 with the bottommost of the rear main rod 2.6 to move towards the bottom, straightening the expansion section 1.3 between the internal thread section 1.2 at the bottommost and the internal thread section 1.2 at the penultimate section, sequentially and similarly screwing the rear main rod 2.6 into the internal thread section 1.2 at the penultimate section of the anchor rod shell 1, screwing the front thread 2.3 of the front main rod 2.2 onto the internal thread section 1.2 at the penultimate section, straightening the expansion section 1.3 between the internal thread section 1.2 at the penultimate section and the internal thread section 1.2 at the penultimate section, and sequentially straightening the whole anchor rod shell 1. The depth of the cement paste for breaking the bottom of the anchor rod shell 1 is the sum of the lengths of all expansion sections 1.3 of the anchor rod shell 1. Concrete through breaking the bottom is broken away, reserves long enough position and gives anchor rod shell 1 extension, can deposit the crushed concrete that drops simultaneously.
The concrete process of taking out the anchor rod shell 1 comprises the following steps: the screw rod is screwed into the anchor rod shell 1, then the outer end of the anchor rod shell 1 and the screw rod are fixed into a whole, then the force is pulled out outwards, the screw rod protects the connectivity inside the anchor rod shell 1, the anchor rod shell 1 is completely taken out, then the screw rod is unscrewed, and the complete anchor rod shell 1 is recovered. The screw rod protects the anchor rod shell 1, prevents to appear breaking when pulling out, the condition that the part can't be retrieved appears, when flare-outing, when the fracture does not appear in expansion section 1.3 simultaneously, can be at reuse.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be construed as the protection scope of the present invention.
Claims (9)
1. The utility model provides a remote monitering system of recoverable multistage self-adaptation inflation stock crowd which characterized in that: including remote monitoring center, data transmission module and a plurality of inflation stock data detection processing apparatus, data transmission module and remote monitoring center wireless connection, data transmission module sets up on an inflation stock data detection processing apparatus, inflation stock data detection processing apparatus includes data processing transmitting device and stock data detection device, and stock data detection device is connected with data processing transmitting device, and data transmission module is connected with data processing transmitting device.
2. The remote monitoring system for the retrievable multi-segment adaptive expansion anchor rod group according to claim 1, wherein: the data processing and sending device comprises a data acquisition module, a data processor and a ZigBee module, the acquisition end of the data acquisition module is connected with the anchor rod data detection device, the output end of the data acquisition module is connected with the data processor, the ZigBee module is connected with the data processor, and the ZigBee modules of the expansion anchor rod data detection and processing device are mutually networked and transmit data to the data transmission module.
3. A remote monitoring system for retrievable multi-section adaptive expansion bolt clusters according to claim 2, wherein: the data transmission module is a 4G module and is used for transmitting the detection data to the remote monitoring center, the remote monitoring center is used for storing the detection data and comparing the detection data with a set alarm value, and when a set value with small stress is detected, an alarm is given out and a manager is prompted as to which anchor rod.
4. A remote monitoring system for retrievable multi-section adaptive expansion bolt clusters according to claim 2, wherein: the anchor rod data detection device comprises an anchor rod shell (1), the interior of the anchor rod shell (1) is arranged to be a hollow structure, concrete is injected into the anchor rod shell (1), the anchor rod shell (1) is arranged in a drill hole of a soil body, the anchor rod shell (1) comprises a plurality of sections of internal thread sections (1.2) and a plurality of sections of expansion sections (1.3), one section of expansion section (1.3) is arranged between the two sections of internal thread sections (1.2), the two ends of the anchor rod shell (1) are both provided with the internal thread sections (1.2), the anchor rod shell (1) is installed in the soil body, and the expansion sections (1.3) are outwards tensioned to be tightly attached to the soil body and anchored to the soil body.
5. The remote monitoring system for the retrievable multi-segment adaptive expansion anchor rod group according to claim 4, wherein: the outer side of the internal thread section (1.2) is provided with a non-expansion section pressure sensor (1.7), the non-expansion section pressure sensor (1.7) is used for detecting the non-expansion section pressure of an external soil body and the internal thread section (1.2), the outer side of the section expansion section (1.3) is provided with an expansion section pressure sensor (1.5) and a bending soft angle displacement sensor (1.6), the expansion section pressure sensor (1.5) is arranged at the front half section of the outer side of the section expansion section (1.3), the expansion section pressure sensor (1.5) is used for detecting the pressure of the external soil body and the section expansion section (1.3), the bending soft angle displacement sensor (1.6) is used for detecting the bending angle of the section expansion section (1.3), and then the pressure of the expansion section pressure sensor (1.5) is subjected to support leg decomposition according to the bending angle, so that the expansion section pressure and the positive pressure of the external soil body are obtained.
6. The remote monitoring system for the retrievable multi-segment adaptive expansion anchor rod group according to claim 5, wherein: the expansion section (1.3) is arranged to be of a hollow pipe structure, a plurality of grouting holes (1.4) are formed in the side wall, the grouting holes (1.4) are arranged to be of an oval structure, the outer portion of the internal thread section (1.2) is arranged to be of a closed structure, internal threads are arranged inside the closed structure, and the thickness of the internal thread section (1.2) is thicker than that of the expansion section (1.3).
7. The remote monitoring system for the retrievable multi-segment adaptive expansion anchor rod group according to claim 5, wherein: the process of detecting data by the anchor rod data detection device is that,
step 1: detecting the external friction resistance strength of the internal thread section (1.2) of the anchor rod, and then calculating the pulling resistance of the internal thread section (1.2) according to the external friction resistance strength;
step 2: detecting the external friction strength of the expansion section (1.3) of the anchor rod, and then calculating the pulling resistance of the expansion section (1.3) according to the external friction strength;
and step 3: detecting the positive pressure of the soil body at the outer front end of the expansion section (1.3) of the anchor rod on the expansion end surface;
and 4, step 4: and (3) the sum of the detected anti-pulling force of all the internal thread sections (1.2), the detected anti-pulling force of all the expansion sections (1.3) and the positive pressure of all the total anti-pulling forces is the force borne by the anchor rod.
8. The remote monitoring system for the retrievable multi-segment adaptive expansion bolt group according to claim 7, wherein: in the step 1, firstly, collecting a soil structure of a construction site, drilling a hole, wherein the soil structure of the construction site is not damaged, then placing an expansion anchor rod into the hole, wherein the length of the hole of the soil structure is the same as that of a section of internal thread section (1.2), applying pressure to the periphery of the soil structure by using a pressure device outside the soil structure, then applying a drawing device at one end of the expansion anchor rod, arranging a dynamometer on the drawing device and the expansion anchor rod, then applying different external forces to the soil structure, recording stress data of the dynamometer, then calculating a friction strength meter under corresponding pressure according to the stress data and the applied pressure, and then placing a pressure sensor (1.7) at a non-expansion section into the friction strength meter to find out corresponding friction strength;
the process of calculating the pulling resistance of the internal thread section (1.2) according to the friction resistance intensity comprises the following steps: the T1 provides the pull-out resistance for the side wall friction of the L1 section common non-expansion anchoring section:
T1＝πD1L1τf (1)
in the formula: d1 and L1 are the diameter and length of the non-expansion anchoring section of the anchor rod, taufThe friction resistance strength between the soil body of the non-expansion anchoring section and the side wall of the anchoring rib is obtained.
9. The remote monitoring system for the retrievable multi-segment adaptive expansion bolt group according to claim 7, wherein: in step 2, firstly, a soil structure of a construction site is collected and is subjected to hole turning, the soil structure of the construction site is not damaged, then an expansion anchor rod is placed into the hole turning, the hole turning length of the soil structure is the same as the length of a section of expansion section (1.3), a pressure device is used outside the soil structure to apply pressure to the periphery of the soil structure, then the expansion section (1.3) is subjected to drawing expansion, then a drawing device is applied to one end of the expansion anchor rod, the drawing device and the expansion anchor rod are provided with a dynamometer, then different external forces are applied to the soil structure, stress data of the dynamometer are recorded, an expansion section pressure sensor (1.5) detects the pressure of an external soil body and the section expansion section (1.3), a bending soft angle displacement sensor (1.6) detects the bending angle of the section expansion section (1.3), and then support leg decomposition is carried out on the pressure of the expansion section pressure sensor (1.5) according to the bending angle, obtaining the pressure of an expansion section and the positive pressure of an external soil body, subtracting the positive pressure from the data of the dynamometer to obtain the uplift resistance of the expansion section (1.3), calculating a corresponding friction strength table under the pressure according to the uplift resistance data and the applied pressure, and putting the pressure detected by the expansion section pressure sensor (1.5) into the friction strength table to find out the corresponding friction strength;
the anti-pulling force process of the expansion section (1.3) is calculated according to the external friction resistance intensity as follows:
t2 is the anti-pulling force that stock inflation anchor section lateral wall friction provided:
T2＝πD2L2τfd (2)
wherein D2 and L2 are the diameter and length of the non-expansion anchoring section of the anchor rod, taufdThe friction resistance strength between the soil body of the non-expansion anchoring section and the side wall of the anchoring rib is obtained.
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