CN108560831B - Reinforcing steel bar stress meter connecting device and mounting method thereof - Google Patents
Reinforcing steel bar stress meter connecting device and mounting method thereof Download PDFInfo
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- CN108560831B CN108560831B CN201810120836.3A CN201810120836A CN108560831B CN 108560831 B CN108560831 B CN 108560831B CN 201810120836 A CN201810120836 A CN 201810120836A CN 108560831 B CN108560831 B CN 108560831B
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- 238000000034 method Methods 0.000 title claims abstract description 41
- 229910001294 Reinforcing steel Inorganic materials 0.000 title claims description 50
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 80
- 239000010959 steel Substances 0.000 claims abstract description 80
- 238000009434 installation Methods 0.000 claims abstract description 60
- 238000003825 pressing Methods 0.000 claims abstract description 42
- 238000013461 design Methods 0.000 claims description 15
- 238000004804 winding Methods 0.000 claims description 10
- 238000010276 construction Methods 0.000 claims description 9
- 239000002390 adhesive tape Substances 0.000 claims description 8
- 238000005520 cutting process Methods 0.000 claims description 7
- 238000010079 rubber tapping Methods 0.000 claims description 7
- 238000011900 installation process Methods 0.000 claims description 6
- 239000004567 concrete Substances 0.000 claims description 5
- 239000010687 lubricating oil Substances 0.000 claims description 5
- 230000001680 brushing effect Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 5
- 238000012544 monitoring process Methods 0.000 description 6
- 230000003014 reinforcing effect Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000004083 survival effect Effects 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 241000411851 herbal medicine Species 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000010420 art technique Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008570 general process Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0047—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes measuring forces due to residual stresses
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- Reinforcement Elements For Buildings (AREA)
Abstract
The invention relates to a connecting device of a steel bar stress meter and an installing method thereof, wherein the connecting device of the steel bar stress meter comprises a sub-sleeve and a main sleeve, wherein parts arranged in the sub-sleeve are provided with a wedge-shaped pressing block, a wedge-shaped pushing block and two wedge-shaped locking blocks. According to the steel bar stress meter connecting device, the traditional sleeve connecting device is replaced by the lock catch, so that the installation procedure of the stress meter is simplified, the labor, material and time costs are greatly saved, and the steel bar stress meter connecting device has a good application prospect.
Description
Technical Field
The invention relates to the technical field of engineering monitoring, in particular to a connecting device of a steel bar stress meter and an installation method thereof.
Background
In recent years, along with the development of large-scale and comprehensive construction and operation of hydraulic buildings, the positions of newly built hydraulic buildings in many areas are more and more remote, the construction conditions are more and more severe, and the encountered adverse factors are more and more. In order to study the deformation and stability of the hydraulic building structure, real-time monitoring of the steel bar stress of a large-volume reinforced concrete structure has become one of the indispensable contents, and a steel bar stress meter is generally adopted for direct measurement.
At present, a sleeve connection method is mostly adopted for installing the reinforcing steel bar stress gauge: cutting reinforcing steel bars, threading, butt welding and assembling, wherein the general process comprises the following steps: firstly, manufacturing a reinforcing steel bar connecting rod with the length of 30cm in a prefabrication factory, wherein the connecting rod is required to be the same as the reinforcing steel bar at the installation position; threading one end of the connecting rod through a threading machine; cutting off the steel bars at the positioned measuring points, and butt welding the non-threading ends of the connectors with the connecting rods through a butt welding machine; and the two ends of the steel bar stress gauge are connected to the steel bars through the rotary sleeve to complete instrument installation.
The conventional method for installing the reinforcing bar stress meter has the following problems and disadvantages: on one hand, the installation method is tedious, and time and labor are wasted; on the other hand, the problems of difficult winding and difficult unwinding of the measuring cable, damaged instrument precision and the like are easily caused; these directly or indirectly affect the monitoring of structural deformations and stability.
Analyzing the cause, the main influencing factors are three points:
1. And the problem of manpower and material resources. The traditional installation steps are more, more equipment is needed to be used, and the traditional installation steps comprise a cutting machine, a threading machine, a butt welding machine, a sleeve machining lathe and the like, and each machine also needs a plurality of professionals to support the operation of on duty, so that the input manpower and material resources are large. In addition, the rebars used in large volume reinforced concrete structures are typically up to 9 meters in length, and a small portion is even up to 12 meters in length. Therefore, two persons are required to lift the steel bars and slowly rotate during installation, a third person is required to rotationally connect the instrument and the steel bars through the sleeve by means of the pipe tongs at the instrument installation position, and the direction of the steel bar gauge is required to be consistent with that of the two sections of steel bars at the moment, so that higher requirements are also provided for the pipe tongs operation technology and the mutually matched mercy degree of installation personnel.
2. The problem of cable winding. The cable of the steel bar stress meter is generally different from tens meters to hundreds meters. In the installation process of the instrument, as the reinforcing steel bar rotates, the reinforcing steel bar meter is always driven to rotate along with the reinforcing steel bar meter due to the force transmission effect, so that the cable led out from the reinforcing steel bar meter can be wound on the reinforcing steel bar one by one along with the rotation of the reinforcing steel bar meter, messy or even knotting of the cable is caused, and the cable is required to be unwound slowly to be reeled after the instrument is installed; on the other hand, the cable is stretched out by a little attention in the process of rotating the pipe wrench, so that the instrument is damaged.
3. Instrument accuracy problems. The steel bars bound in the construction of the large-volume concrete structure are usually in a net shape or a cage shape, and the traditional installation mode of the steel bar stress meter generally does not allow the steel bars to be installed in the field, and the steel bars are generally transported to a designated position after being installed outside the field. The length of the steel bars after connection is up to 30m, and the steel bar meter is inevitably subjected to stress-release-stress circulation in the process of lifting and transporting, so that the accuracy of the instrument is unpredictably influenced.
Chinese patent No. cn201220470987.X discloses a bar stress meter comprising a stress meter, two connecting bars; the first ends of the connecting bars are respectively connected with the two ends of the stress gauge, the two sleeves are respectively connected with the second ends of the connecting bars, and the second ends of the sleeves are respectively connected with the connecting ends of the bars to be tested. The connecting steel bar of the steel bar stress meter is connected with the steel bar to be measured in a connecting mode of the straight thread sleeve, so that the connecting steel bar and the steel bar are connected coaxially, and the connecting quality meets the requirements of technical regulations for steel bar mechanical connection (JGJ 107-2010). The construction quality of the installation of the reinforcing steel bar stress meter is guaranteed, and the working performance of the reinforcing steel bar stress meter is improved. However, the utility model only connects the axes of the steel bars which are connected by installation, but can not simplify the installation procedure, thereby achieving the purposes of saving manpower and material resources and solving the problem of winding and knotting of cables.
Therefore, it is necessary to develop a convenient and efficient connection device for the reinforcing steel bar stress meter and to adopt a matched installation method.
Disclosure of Invention
In order to overcome the defects, the invention creatively develops a connecting device of a steel bar stress meter and an installation method thereof, and specifically adopts the following technical scheme:
The utility model provides a reinforcing bar stress meter connecting device, its includes sub-sleeve and female sleeve, its characterized in that: the sleeve is provided with two ends, one end of the sleeve is the same as the traditional sleeve, tapping is carried out according to the size of a steel bar stress meter to form a hollow end with internal threads, which is defined as a P end, and the other end of the sleeve is provided with three openings, which is defined as an O end; the assembly parts of the O end of the sub-sleeve comprise a wedge-shaped pressing block, a wedge-shaped pushing block and two wedge-shaped locking blocks.
The female sleeve is provided with two ends, one end of the female sleeve is the same as the traditional sleeve, tapping is carried out according to the size of a reinforcing steel bar, a hollow end with internal threads is formed, and the hollow end is defined as an R end; the other end is defined as an S end, the structure of the sleeve is matched with that of the sub-sleeve, the sleeve is provided with a cavity for accommodating the O end of the sub-sleeve, and the inner diameter of the cavity is equal to the outer diameter of the sub-sleeve.
Further, the sub-sleeve is a sleeve with the same size as the outer diameter of the reinforcing steel bar stress meter and is provided with three open O ends, and the specific structure of the three openings is as follows:
One is a radial through square hole passing through the central axis along the radial direction on the surface of the cylindrical sub-sleeve, two identical wedge-shaped locking blocks are oppositely arranged in the radial through square hole, and the shape, the size and the wedge-shaped locking blocks of the radial through square hole are matched;
The hollow end with internal threads of the sub sleeve is provided with an axial non-through square hole which is formed along the central axis and radially penetrates through the square hole, is communicated with the radial through square hole, and forms a V-shaped groove on the side wall of the radial through square hole after penetrating through the radial through square hole, and is used for accommodating a V-shaped tip structure which is pushed inwards when the wedge-shaped tip of the wedge-shaped locking block is clamped by the wedge-shaped push block limiting groove;
The other is a radial non-through square hole passing through the central axis along the radial direction from the surface of the sub-sleeve until the sub-sleeve is communicated with the axial non-through square hole, wherein the hole opening position is positioned between the P end and the radial through square hole, and a wedge-shaped pressing block is arranged in the radial non-through square hole.
Further, the wedge-shaped pressing block is matched with the radial non-through square hole of the sub-sleeve, the main body of the wedge-shaped pressing block is a cuboid with a square transverse section, and the upper end of the wedge-shaped pressing block is square, and the lower end of the wedge-shaped pressing block is wedge-shaped; the wedge-shaped pushing block is similar to the wedge-shaped pressing block in shape, is matched with the axial non-through square hole of the sub-sleeve, has a wedge-shaped end at one end and a V-shaped tip at the other end, and is provided with a self-locking structure at the large caliber of the V-shaped tip, and is provided with two limiting grooves which are arranged on the wedge-shaped surface and are shaped like V-shaped or V-shaped; the wedge surface of the wedge-shaped pressing block is matched with the wedge surface of the wedge-shaped pushing block; the wedge-shaped locking blocks are similar to the wedge-shaped pressing blocks and are matched with radial through square holes of the sub-sleeves, and the wedge-shaped surfaces of the two wedge-shaped locking blocks are matched with the two side surfaces of the V-shaped tip of the wedge-shaped pushing block; two square non-through slotted holes are symmetrically formed in the inner wall of the S end of the female sleeve in the radial direction, and the positions of the two square non-through slotted holes correspond to the positions of the radial through square holes respectively and are used for fixing the wedge-shaped locking blocks.
Further, the square side length of the upper end of the wedge-shaped pressing block is smaller than the side length of the radial non-through square hole of the sub-sleeve, the height is equal to the radius of the sub-sleeve, the side length of the upper end of the wedge-shaped pressing block is 5mm, and the height is 15mm; the square side length of the upper end of the wedge-shaped push block is smaller than the side length of the axial non-through square hole, the length is slightly smaller than the distance from the tapping end of the sub-sleeve to the radial through square hole, the diameter depth of the limiting groove is greater than 1.5mm, the side length of the upper end of the push block is 5mm, and the length is 18mm; the square side length of the upper end of the wedge-shaped locking piece is smaller than the side length of the radial through square hole, the height is slightly smaller than the sum of the radius of the sub sleeve and the depth of the non-through slot hole on the main sleeve, the side length of the upper end of the wedge-shaped locking piece is 5mm, and the height is 13mm.
Further, the two square non-through slots at the S end of the female sleeve are provided with slotting position indication marks at the corresponding outer surfaces.
Further, the inner diameter of the cavity of the main sleeve (2) is equal to the outer diameter of the sub sleeve (1), and the square side length of the non-through slot hole (9) is slightly larger than the square side length of the wedge-shaped locking block (5), wherein the square side length is 5.5mm.
The installation method of the reinforcing steel bar stress meter connecting device is characterized by comprising the following steps of: the assembling method of the connecting device of the steel bar stress meter comprises the following steps:
S1) brushing lubricating oil on the inner walls of three open square holes of the sub-sleeve and the outer surfaces of the wedge-shaped push block, the wedge-shaped push block and the wedge-shaped locking block parts by using brushes, so as to ensure that the lubricating oil can smoothly move in each square hole formed in the sub-sleeve;
S2) oppositely placing the two wedge-shaped locking blocks into radial through square holes of the sub-sleeve;
S3) winding the adhesive tape for one circle to fix the two wedge-shaped locking blocks so as to prevent the two wedge-shaped locking blocks from falling out in the installation process;
S4) placing the wedge-shaped push block into the square hole which is axially not penetrated and is arranged at the axis through the inside of the terminal sleeve with the threaded end, and enabling the tip end part to prop against the two wedge-shaped locking blocks;
s5) putting the wedge-shaped pressing block into a radial non-through square hole formed in the middle position of the sleeve, and completing the installation of the sub-sleeve;
s6) the female sleeve is of a prefabricated integral structure, and assembly is not needed.
Further, the installation method of the connection device of the steel bar stress meter is characterized in that: the installation method further comprises the following steps:
S7) arranging the reinforcing steel bar stress gauge, the assembled sub sleeve, the assembled main sleeve and the related tools in a reserved installation position, and preparing for installation;
s8) installing one end of the sub-sleeve with the internal thread to the end part of the reinforcement bar stress gauge;
S9) installing one threaded end of the female sleeve to the reinforced joint part;
S10) after the adhesive tape on the surface of the wedge-shaped locking block is stripped off, the sub-sleeve is arranged in the main sleeve according to a slotting position indication mark at the position of the outer surface corresponding to the square non-through slotted hole (9), one end of the sub-sleeve with the wedge-shaped locking block is pushed into one end of the slotted hole of the main sleeve, the wedge-shaped pressing block is pressed forcefully, and the wedge-shaped pushing block is pushed further, so that the limit slot of the wedge-shaped pushing block clamps the wedge-shaped tip end of the wedge-shaped locking block.
Further, the installation method of the connection device of the steel bar stress meter is characterized in that:
the method comprises the following steps of:
grouping numbers, namely determining the number of the reinforcing steel bar stress meters to be installed according to the design scheme requirements, and grouping and numbering the installation positions of the reinforcing steel bar stress meters according to the design survey lines;
the method further comprises the following steps before the step S7:
step S7-01: setting out the mounting position of the sensor according to the requirements of a design drawing, and marking;
step S7-02: cutting off stressed steel bars, threading the joint parts of the two steel bars, transporting the steel bars to a construction site, placing the steel bars according to the design scheme, reserving the installation position of a steel bar stress meter, and recording the installation sequence number.
Further, the method for installing the connection device of the reinforcing steel bar stress meter is characterized by further comprising the following steps:
S11) when one end of the steel bar stress meter is installed, repeating the steps S8-S10, and connecting the other end of the steel bar stress meter with the steel bar joint;
S12) unwinding a cable of the steel bar stress gauge, moving the cable to the outside of the field along the steel bars, and binding the cable to the nearest steel bar along the line by using binding wires or binding belts so as to prevent damage;
s13) circulating the steps S7-S11 until the installation of all the survey line reinforcing steel bar stress meters is completed;
s14) hoisting the inner and outer templates, pouring concrete, introducing the cable led to the outside of the site into an observation room, and accessing the cable into an MCU or a secondary instrument, thereby completing the installation of the steel bar stress meter.
Compared with the prior art, the invention has the following advantages:
The traditional sleeve connecting device is replaced by the locking device, so that the installation procedure is simplified, the pipe tongs are not needed, the installation personnel can be reduced to one person from a plurality of persons, and various certificate holding operators are not needed; secondly, the locking device does not need to rotate, and the lock is pressed, so that the device is convenient and quick; finally, the traditional off-site installation is improved to on-site installation, so that the procedure of carrying overlong reinforcing steel bars is omitted, the accuracy of the reinforcing steel bar stress gauge is ensured, and the service life of the reinforcing steel bar stress gauge is not reduced. The beneficial effects of the Chinese herbal medicine are analyzed, and the Chinese herbal medicine mainly comprises the following three points:
1) And labor, material resources and time cost are greatly saved. The connecting device is directly prefabricated and processed through a lathe and a die, and a cutting machine, a threading machine and a butt welding machine are not needed on site, so that various certificate holding operators are not needed. The invention can be used for installing the steel bar stress meter in the field, thereby saving the middle carrying time. The installation procedure is greatly simplified, tools such as pipe tongs and the like are not required to be used, the steel bars do not need to be rotated, installation staff can be reduced to one person from multiple persons, and the installation is achieved through manual installation, so that the installation method is safe and rapid.
2) Solves the problem of winding and knotting of the cable. The device replaces the traditional pure sleeve connection mode through the locking device, so that the reinforcing steel bar meter does not need to rotate, the problem that a cable is wound and knotted along with the rotation of the reinforcing steel bar meter is properly solved, a large amount of time is saved, and the cable is protected from being damaged.
3) The installation survival rate and the measurement accuracy of the instrument are improved. The invention omits the pipe wrench mounting step and avoids the damage of the pipe wrench to the cable. The invention can be used for installing the reinforcing steel bar stress meter in the field, so that the reinforcing steel bar stress meter can not bear the cyclic actions of stress, release, re-stress and the like in the carrying process. The survival rate and the measurement accuracy of the instrument are greatly improved, and the service life is prolonged.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1.1 is a three-dimensional schematic view of a sub-sleeve;
fig. 1.2 shows a cross-section through the sub-sleeve in radial direction through the square hole 8;
Fig. 1.3 shows a cross-section of a sub-sleeve radially without through square holes 6;
FIG. 2.1 is a three-dimensional schematic of a female sleeve;
fig. 2.2 shows a cross-section of the female sleeve along the slot 9;
FIG. 3.1 is a three-dimensional schematic of a wedge-shaped press block;
FIG. 3.2 is a three view of a wedge-shaped press block;
FIG. 4.1 is a three-dimensional schematic of a wedge pusher;
FIG. 4.2 is a three view of a wedge pusher;
FIG. 5.1 is a three-dimensional schematic view of a wedge lock;
FIG. 5.2 shows three views of a wedge lock block;
FIG. 6.1 is a three-dimensional schematic of a sub-sleeve with parts installed;
fig. 6.2 shows a cross-section through a square radial hole 8 of a sub-sleeve with components mounted therein;
fig. 6.3 shows a cross-section of the sub-sleeve with the installed components in a radial non-through square hole 6;
fig. 7 is a schematic view showing the installation of the bar strengthener attachment device between the bar and the bar strengthener.
Reference numeral 1, a sub-sleeve; 2. a female sleeve; 3. wedge-shaped pressing blocks; 4. wedge-shaped push blocks; 5. a wedge lock block; 6. radial non-through square holes; 7. the axial direction is not communicated with the square hole; 8. radial through square holes; 9. a slot hole; 10. a steel bar stress meter; 11. a reinforcing bar joint; 12. a cable of the steel bar stress meter.
Detailed Description
The system provided by the invention and the working method thereof will be described in detail by way of example with reference to the accompanying drawings. It should be noted that the description of these examples is for aiding in understanding the present invention, but is not intended to limit the present invention.
The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: the terms "/and" herein describe another associative object relationship, indicating that there may be two relationships, e.g., a/and B, may indicate that: the character "/" herein generally indicates that the associated object is an "or" relationship.
Example 1
The embodiment mainly describes the structure of the connecting device of the reinforcing steel bar stress meter.
1. Main body structure
The main body structure of the reinforcing steel bar stress meter connecting device comprises a sub sleeve 1 and a main sleeve 2.
As shown in fig. 1.1, which is a three-dimensional schematic of the sub-sleeve. As shown in the figure, the sub-sleeve 1 has two ends, one end of which is the same as the conventional sleeve, is tapped with the size of a reinforcing bar stress gauge to form a hollow end with internal threads, which is defined as a P end, and the other end is defined as an O end, and is subjected to three openings; the three openings comprise a radial through square hole 8 passing radially through the central axis, an axial non-through square hole 7 passing axially along the central axis, and a radial non-through square hole 6 passing radially through the central axis. Their specific opening patterns and positions are as follows:
As shown in fig. 1.2, which is a cross-sectional view of a sub-sleeve through a square hole 8 in a radial direction. As shown in the figure, the radial through square hole 8 is formed by: the open pore position is at the O end of sleeve, and radial through square hole 8 is opened along radial central axis at cylindrical sub-sleeve 1 surface, and inside relative two wedge locking piece 5 of placing, the shape of square hole and wedge locking piece 5's shape phase-match.
The mode of opening the square hole 7 which is not penetrated in the axial direction is as follows: the axial non-through square hole 7 is formed along the central axis from the P end of the sub sleeve to the O end (namely, the axial non-through square hole formed along the central axis to the radial through square hole from the hollow end with internal threads of the sub sleeve) and is communicated with the radial through square hole, and a V-shaped groove is formed on the side wall of the radial through square hole after passing through the radial through square hole and is used for accommodating a V-shaped tip structure which is pushed inwards when the wedge-shaped tip of the wedge-shaped locking block is blocked by the wedge-shaped push block limiting groove.
As shown in fig. 1.3, which is a cross-sectional view of the sub-sleeve without passing through the square hole 6 in the radial direction. As shown in the figure, the radial non-through square hole 6 is formed by: between the end P and the end O of the sub-sleeve, a radial non-through square hole 6 is formed from the surface of the sub-sleeve along the radial central axis, the hole is formed between the end P and the radial non-through square hole, and a wedge-shaped pressing block 3 is arranged in the middle of the radial non-through square hole until the hole is communicated with the axial non-through square hole 7.
As shown in fig. 2.1, which is a three-dimensional schematic of the female sleeve.
The female sleeve 2 is provided with two ends, one end of the female sleeve 2 is the same as the traditional sleeve, tapping is carried out according to the size of a reinforcing steel bar, a hollow end with internal threads is formed, and the hollow end is defined as an R end; the other end is defined as an S end, the structure of the S end is matched with that of the sub-sleeve, the S end is provided with a cavity for accommodating the O end of the sub-sleeve, and the inner diameter of the cavity is equal to the outer diameter of the sub-sleeve.
Further, as shown in fig. 2.2, two square non-through slots 9 are symmetrically opened on the inner wall of the S end in the radial direction. Fig. 2.2 is a cross-sectional view of the female sleeve along the slot 9. The positions of the square non-through slotted holes 9 respectively correspond to the positions of the radial through square holes 8, so as to fix/accommodate the wedge-shaped locking blocks 5, and the outer surfaces correspond to slotted position indication marks. The square side of the slot 9 is greater than the square side of the wedge lock, preferably 5.5 mm.
2. Structure of parts
The assembly parts of the O end of the sub-sleeve comprise a wedge-shaped pressing block 3, a wedge-shaped pushing block 4 and two wedge-shaped locking blocks 5. Hereinafter, description will be made separately.
1) Wedge-shaped pressing block 3
As shown in fig. 3.1, which is a three-dimensional schematic of a wedge-shaped press block; as shown in fig. 3.2, which is a three-view of a wedge-shaped press block;
The wedge-shaped pressing block 3 is a structure with square upper end and wedge lower end matched with the radial non-through square hole 6 of the sub-sleeve 1, the main body of the wedge-shaped pressing block is rectangular, the transverse section of the wedge-shaped pressing block is square, and the front view of the wedge lower end of the wedge-shaped pressing block is square. The side length range of the square at the upper end of the wedge-shaped pressing block is smaller than the side length of the radial non-through square hole 6, and the height range is smaller than the radius of the sub-sleeve. The upper end edge of the wedge-shaped pressing block is preferably 5mm long, and the height is preferably 15 mm.
2) Wedge-shaped push block 4
As shown in fig. 4.1, which is a three-dimensional schematic of a wedge-shaped pusher; as shown in fig. 4.2, which is a three-view of a wedge pusher.
The wedge-shaped push block 4 is similar to the wedge-shaped push block in shape, is matched with the axial non-through square hole 7 of the sub-sleeve, has a wedge-shaped end and a V-shaped tip (the angle of the V-shaped inclined surface is 45 degrees as an option), and is provided with a self-locking structure at the large caliber of the V-shaped tip in a mode of two limit grooves, wherein the limit grooves are arranged on the wedge-shaped surface and are shaped as V-shaped or V-shaped; the wedge surface of the wedge-shaped pressing block is matched with the wedge surface of the wedge-shaped pushing block. The square side length range of the upper end of the wedge-shaped push block is smaller than the side length of the axial non-through square hole 7, the length is smaller than the distance from the thread end point of the end of the sub-sleeve P to the radial through square hole 8, and the diameter depth of the limiting groove is larger than 1.5 mm.
Alternatively, the side length of the upper end of the push block is preferably 5mm, the length is preferably 18 mm, the diameter depth of the limiting groove is preferably 1.5 mm, and the angle is 45 degrees with the wedge angle of the locking block.
3) Wedge lock 5
As shown in fig. 5.1, which is a three-dimensional schematic view of the wedge lock; as shown in fig. 5.2, which is a three-view of the wedge lock.
The wedge-shaped locking blocks 5 are similar to the wedge-shaped pressing blocks 3 and are matched with radial through square holes 8 of the sub-sleeve 1, and the wedge-shaped surfaces of the two wedge-shaped locking blocks are matched with the two side surfaces of the V-shaped tip of the wedge-shaped pushing block; two square non-through slotted holes 9 are symmetrically formed in the inner wall of the S end of the female sleeve in the radial direction, and the positions of the two square non-through slotted holes correspond to the positions of the radial through square holes respectively and are used for fixing the wedge-shaped locking blocks. The side length range of the upper end of the wedge-shaped locking block is smaller than the side length of the radial through square hole 8, the height range is smaller than the sum of the radius of the sub sleeve and the depth of the non-through slotted hole 9 of the main sleeve, and the difference between the radius and the depth is larger than the difference between the radius and the depth.
Alternatively, the upper end edge of the wedge lock is preferably 5 mm long and more preferably 13 mm long.
Example 2
This embodiment is based on the first embodiment, and mainly describes a method for assembling a connection device of a reinforcing bar stress gauge according to the present invention.
The installation method of the reinforcing steel bar stress meter connecting device comprises the following steps of:
s1) brushing lubricating oil on the inner walls of three open square holes of the sub-sleeve 1 and the outer surfaces of the wedge-shaped push blocks 3, the wedge-shaped push blocks 4 and the wedge-shaped locking block 5 by using brushes, so as to ensure that the parts can move smoothly in all square holes of the sub-sleeve;
S2) oppositely placing the two wedge-shaped locking blocks 5 into radial through square holes 8 of the sub sleeve 1;
S3) winding the adhesive tape for one circle to fix the two wedge-shaped locking blocks so as to prevent the two wedge-shaped locking blocks from falling out in the installation process;
S4) putting the wedge-shaped push block 4 into the square hole 7 which is axially not penetrated and is arranged at the axis through the inner part of the sleeve with one threaded end, and propping the two wedge-shaped locking blocks 5 by the tip part;
s5) putting the wedge-shaped pressing block 3 into a radial non-through square hole 6 formed in the middle position of the sleeve, and completing the installation of the sub-sleeve 1;
S6) the female sleeve 2 is of a prefabricated integral structure, and is not required to be assembled again.
As shown in fig. 6.1, which is a three-dimensional schematic of the sub-sleeve with the parts installed; as shown in fig. 6.2, which is a cross-sectional view of the radial through square hole 8 of the sub-sleeve with the components mounted thereon; as shown in fig. 6.3, a cross-sectional view of the sub-sleeve with the components mounted thereon is shown without passing through the square hole 6 in the radial direction.
Example 3
This embodiment is based on the first and second embodiments, and mainly describes a method for installing a reinforcing bar stress meter connecting device according to the present invention.
As shown in fig. 7, which is a schematic view of the installation of the bar strengthener attachment device between the bar and the bar strengthener.
The method for installing the connection device of the steel bar stress meter further comprises the following steps:
1. Grouping number (S0)
Determining the number of the reinforcing steel bar stress meters to be installed according to the design scheme requirements, and numbering the installation positions of the reinforcing steel bar stress meters in groups according to the design survey lines;
2. Assembled independent unit (cycle S1-S6)
Assembling the sub-sleeve 1 and the main sleeve 2: the assembly method of the connecting device of the steel bar stress meter is shown;
3. Stress meter for installing reinforcing steel bar
1) Setting out the mounting position of the sensor according to the requirements of a design drawing, and marking; (S7-01)
2) Cutting off stressed steel bars, threading the joint parts of the two steel bars, transporting the steel bars to a construction site, placing the steel bars according to the design scheme, reserving the installation position of a steel bar stress meter, and recording the installation sequence number; (S7-02)
3) The steel bar stress gauge, the assembled sub sleeve, the assembled main sleeve, the related tools and other parts are prepared, placed at a reserved installation position and prepared for installation; (S7)
4) Mounting the threaded end of the sub-sleeve to the end of the bar gauge 10; (S8)
5) Installing the threaded end of the female sleeve at the position of the reinforcing steel bar joint 11; (S9)
6) After the adhesive tape on the surface of the wedge-shaped locking block is removed, the sub-sleeve corresponding to the slotting position indication mark is arranged in the main sleeve, the wedge-shaped pressing block is pressed forcefully, one end of the sub-sleeve with the wedge-shaped locking block 5 is pushed into one end of the main sleeve with the slotted hole 9, and the wedge-shaped pushing block is pushed forcefully, so that the limit slot of the wedge-shaped pushing block clamps the wedge-shaped tip of the wedge-shaped locking block; (S10)
7) At this time, one end of the steel bar stress meter is installed, repeating the steps 4) to 6), and connecting the other end of the steel bar stress meter with the steel bar joint; (S11)
8) The meter bar gauge cable 12 is unwound, moved outwardly along the bar to the outside of the field, and tied along the line with a tie or tie to the nearest bar to prevent damage. (S12)
9) Circulating the steps 3) to 8) until the installation of all the survey line reinforcing steel bar stress meters is completed; (S13)
10 Hoisting the inner and outer templates, pouring concrete, introducing the cable led to the outside of the field into an observation room, and connecting the cable into an MCU or a secondary instrument to finish the installation of the steel bar stress meter. (S14)
Example 4
The present embodiment is performed based on the second or third embodiment, and mainly introduces an optimization technical scheme of the installation method of the reinforcing steel bar stress meter connection device.
The assembling method of the connecting device of the steel bar stress meter comprises the following steps that S3, two wedge-shaped locking blocks are fixed by winding an adhesive tape for one circle so as to prevent falling out in the installation process, and the purpose of fixing can be achieved by using the adhesive tape for winding, but the operation is slightly inconvenient; therefore, as an optimization scheme, the outer surfaces of three parts (the wedge-shaped pressing block 3, the wedge-shaped pushing block 4 and the wedge-shaped locking block 5) and the inner surfaces of the three opening square holes of the sub-sleeve can be made of magnetic materials or are made to be magnetic, so that in the installation process, the parts and the inner walls of the square holes can be attracted to each other, the fixing effect is achieved, and meanwhile, the operation is greatly simplified.
Example 5
The invention will be further described and its effect will be verified in conjunction with actual engineering. The specific embodiments described herein are to be considered in an illustrative sense only and are not intended to limit the invention.
In order to reduce the internal force of the lock chamber wall and improve the anti-capsizing capability of the lock chamber, the safety emblem river south lawn ship lock adopts an integral lock chamber structure with unloading plates for the first time, and the structure is formed into a whole by a cushion layer, a bottom plate, the lock chamber wall and the unloading plates on two sides of the lock chamber wall. The design stage only carries out preliminary calculation on the influence of the internal force of the lock chamber, but detailed research is not carried out on the aspects of structural type, setting height, mutual influence with the earth filling after the wall and the like, and the design rationality of the integral structural type and the safety of the construction and operation period are unknown. In order to study the problem of the stability and deformation of the integral lock chamber structure with the unloading plate, the integral structure in the construction and water-through operation process needs to be monitored and detected on site. Therefore, the monitoring of the change of the stress born by the bottom plate stressed steel bars along with time and backfill elevation is a precondition for the deformation and stability analysis of the brake chamber.
According to the monitoring requirements, 6 groups of reinforcing steel bar meters are respectively arranged in the upper and lower transverse reinforcing steel bars of the bottom plate, and the connecting device and the mounting method provided by the invention are adopted. The installation of the instrument completely meets the design requirement, the connection process of the reinforcing steel bar meter is not rotated, the winding condition is not generated, and the survival rate is 100%. After long-term monitoring, the analysis and observation data has good regularity of change, and is completely matched with the actual situation, so that the reinforcing steel bar stress meter works normally, and the internal stress data of the structure is real and accurate and has high reliability. Powerful data support is provided for analyzing the internal stress acting on the bottom plate and the distribution thereof and researching the stability and deformation of the integral chamber structure with the unloading plate.
As described above, the present invention can be preferably implemented. Variations, modifications, substitutions, integration and alterations to these embodiments are within the scope of this disclosure for those skilled in the art without departing from the principles and spirit of this disclosure. The invention is not specifically described or defined in any particular section and is practiced using prior art techniques.
Claims (4)
1. The method for installing the connection device of the steel bar stress meter is characterized by comprising the following steps of: the assembling method of the connecting device of the steel bar stress meter comprises the following steps:
S1) brushing lubricating oil on the inner walls of three open square holes of the sub-sleeve and the outer surfaces of the wedge-shaped push block, the wedge-shaped push block and the wedge-shaped locking block parts by using brushes, so as to ensure that the lubricating oil can smoothly move in each square hole formed in the sub-sleeve;
S2) oppositely placing the two wedge-shaped locking blocks into radial through square holes of the sub-sleeve;
S3) winding the adhesive tape for one circle to fix the two wedge-shaped locking blocks so as to prevent the two wedge-shaped locking blocks from falling out in the installation process;
S4) placing the wedge-shaped push block into the square hole which is axially not penetrated and is arranged at the axis through the inside of the terminal sleeve with the threaded end, and enabling the tip end part to prop against the two wedge-shaped locking blocks;
s5) putting the wedge-shaped pressing block into a radial non-through square hole formed in the middle position of the sleeve, and completing the installation of the sub-sleeve;
S6) the female sleeve is of a prefabricated integral structure, and assembly is not needed;
the steel bar stress meter connecting device comprises a sub sleeve (1) and a main sleeve (2), wherein one end of the sub sleeve (1) is the same as the traditional sleeve, tapping is carried out according to the size of a steel bar stress meter to form a hollow end with internal threads, which is defined as a P end, and the other end of the sub sleeve is provided with three openings, which is defined as an O end; the assembly part of the O end of the sub sleeve (1) comprises a wedge-shaped pressing block (3), a wedge-shaped pushing block (4) and two wedge-shaped locking blocks (5);
The female sleeve (2) is provided with two ends, one end of the female sleeve is the same as the traditional sleeve, tapping is carried out according to the size of a reinforcing steel bar, a hollow end with internal threads is formed, and the hollow end is defined as an R end; the other end is defined as an S end, the structure of the S end is matched with that of the sub-sleeve (1), a cavity for accommodating the O end of the sub-sleeve (1) is formed, and the inner diameter of the cavity is equal to the outer diameter of the sub-sleeve (1);
The sub-sleeve (1) is a sleeve with the same size as the outer diameter of the reinforcing steel bar stress meter and is provided with three open O ends, and the concrete structure of the three openings is as follows:
One is a radial through square hole (8) passing through the central axis along the radial direction on the surface of the cylindrical sub-sleeve (1), two identical wedge-shaped lock blocks (5) are oppositely arranged in the radial through square hole (8), and the shape and the size of the radial through square hole (8) are matched with those of the wedge-shaped lock blocks (5);
the hollow end with internal threads of the sub sleeve (1) is provided with an axial non-through square hole (7) which is arranged along a central axis and radially penetrates through the square hole (8), is communicated with the radial through square hole (8), and forms a V-shaped groove on the side wall of the radial through square hole (8) after penetrating through the radial through square hole (8) so as to accommodate a V-shaped tip structure which is pushed inwards when a limit groove of the wedge-shaped push block (4) clamps a wedge-shaped tip of the wedge-shaped locking block (5);
The other is a radial non-through square hole (6) passing through the central axis along the radial direction from the surface of the sub sleeve (1) until being communicated with the axial non-through square hole (7), the hole opening position is positioned between the P end and the radial through square hole (8), and a wedge-shaped pressing block (3) is arranged in the radial non-through square hole (6);
The wedge-shaped pressing block (3) is matched with the radial non-through square hole (6) of the sub-sleeve (1), the main body of the wedge-shaped pressing block is a cuboid with a square transverse section, and the upper end of the wedge-shaped pressing block is square and the lower end of the wedge-shaped pressing block is wedge-shaped; the wedge-shaped pushing block (4) is similar to the wedge-shaped pressing block (3), is matched with the axial non-through square hole (7) of the sub-sleeve (1), is wedge-shaped at one end and is provided with a V-shaped tip at the other end, and is provided with a self-locking structure at the large caliber of the V-shaped tip in the form of two limit grooves which are arranged on the wedge-shaped surface and are shaped like V-shaped or V-shaped; the wedge-shaped surface of the wedge-shaped pressing block (3) is matched with the wedge-shaped surface of the wedge-shaped pushing block (4); the wedge-shaped locking blocks (5) are similar to the wedge-shaped pressing blocks (3), are matched with radial through square holes (8) of the sub-sleeve (1), and the wedge-shaped surfaces of the two wedge-shaped locking blocks (5) are matched with the two side surfaces of the V-shaped tip of the wedge-shaped pushing block (4); two square non-through slotted holes (9) are symmetrically formed in the S-end inner wall of the female sleeve (2) along the radial direction, and the positions of the two square non-through slotted holes correspond to the positions of the radial through square holes (8) respectively and are used for fixing the wedge-shaped locking blocks (5);
The square side length of the upper end of the wedge-shaped pressing block (3) is smaller than the side length of the radial non-through square hole (6) of the sub-sleeve, the height is equal to the radius of the sub-sleeve (1), the side length of the upper end of the wedge-shaped pressing block (3) is 5mm, and the height is 15mm; the square side length of the upper end of the wedge-shaped push block (4) is smaller than the side length of the axial non-through square hole (7), the length is slightly smaller than the distance from the tapping end of the sub-sleeve (1) to the radial through square hole (8), the diameter depth of the limiting groove is larger than 1.5mm, the side length of the upper end of the push block is 5mm, and the length is 18mm; the square side length of the upper end of the wedge-shaped locking block (5) is smaller than the side length of the radial through square hole (8), the height is slightly smaller than the sum of the radius of the sub sleeve (1) and the depth of the non-through slot hole (9) on the main sleeve, and the side length of the upper end of the wedge-shaped locking block is 5mm and the height is 13mm;
The corresponding outer surfaces of the two square non-through slotted holes (9) are provided with slotting position indication marks;
the inner diameter of the cavity of the main sleeve (2) is equal to the outer diameter of the sub sleeve (1), and the square side length of the non-through slot hole (9) is slightly larger than that of the wedge-shaped locking block (5), wherein the square side length is 5.5mm.
2. A method of installing a rebar stress meter connection according to claim 1, wherein: the installation method further comprises the following steps:
S7) arranging the reinforcing steel bar stress gauge, the assembled sub sleeve, the assembled main sleeve and the related tools in a reserved installation position, and preparing for installation;
S8) installing one end of the sub-sleeve with the internal thread to the end part of the steel bar stress meter;
S9) installing one threaded end of the female sleeve to the reinforced joint part;
S10) after the adhesive tape on the surface of the wedge-shaped locking block is stripped off, the sub-sleeve is arranged in the main sleeve according to a slotting position indication mark at the position of the outer surface corresponding to the square non-through slotted hole (9), one end of the sub-sleeve with the wedge-shaped locking block is pushed into one end of the slotted hole of the main sleeve, the wedge-shaped pressing block is pressed forcefully, and the wedge-shaped pushing block is pushed further, so that the limit slot of the wedge-shaped pushing block clamps the wedge-shaped tip end of the wedge-shaped locking block.
3. A method of installing a rebar stress meter connection according to claim 2, wherein: the method comprises the following steps of:
grouping numbers, namely determining the number of the reinforcing steel bar stress meters to be installed according to the design scheme requirements, and grouping and numbering the installation positions of the reinforcing steel bar stress meters according to the design survey lines;
the method further comprises the following steps before the step S7:
step S7-01: setting out the mounting position of the sensor according to the requirements of a design drawing, and marking;
Step S7-02: cutting off stressed steel bars, threading the joint parts of the two steel bars, transporting the steel bars to a construction site, placing the steel bars according to the design scheme, reserving the installation position of a steel bar stress meter, and recording the installation sequence number.
4. A method of installing a rebar stress meter connection according to claim 3, wherein: the method also comprises the following steps:
S11) when one end of the steel bar stress meter is installed, repeating the steps S8-S10, and connecting the other end of the steel bar stress meter with the steel bar joint;
S12) unwinding a cable of the steel bar stress gauge, moving the cable to the outside of the field along the steel bars, and binding the cable to the nearest steel bar along the line by using binding wires or binding belts so as to prevent damage;
s13) circulating the steps S7-S12 until the installation of all the survey line reinforcing steel bar stress meters is completed;
S14) hoisting the inner and outer templates, pouring concrete, introducing the cable led to the outside of the site into an observation room, and accessing the cable into an MCU or a secondary instrument, thereby completing the installation of the steel bar stress meter.
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| CN201810120836.3A CN108560831B (en) | 2018-02-07 | 2018-02-07 | Reinforcing steel bar stress meter connecting device and mounting method thereof |
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| CN201810120836.3A CN108560831B (en) | 2018-02-07 | 2018-02-07 | Reinforcing steel bar stress meter connecting device and mounting method thereof |
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| CN2627106Y (en) * | 2003-01-24 | 2004-07-21 | 董满林 | Reinforced bar connector with pretension device |
| CN102261167A (en) * | 2011-05-05 | 2011-11-30 | 建研科技股份有限公司 | Adjustable type reinforcing bar threaded connection device |
| CN106592872A (en) * | 2016-11-24 | 2017-04-26 | 浙江大学建筑设计研究院有限公司 | Steel bar mechanical connecting structure and installation method |
| CN206495423U (en) * | 2016-12-27 | 2017-09-15 | 北京巧力神金属结构有限公司 | Line bar connector |
| CN208293908U (en) * | 2018-02-07 | 2018-12-28 | 水利部交通运输部国家能源局南京水利科学研究院 | A kind of stress meter pre-embedded device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2627106Y (en) * | 2003-01-24 | 2004-07-21 | 董满林 | Reinforced bar connector with pretension device |
| CN102261167A (en) * | 2011-05-05 | 2011-11-30 | 建研科技股份有限公司 | Adjustable type reinforcing bar threaded connection device |
| CN106592872A (en) * | 2016-11-24 | 2017-04-26 | 浙江大学建筑设计研究院有限公司 | Steel bar mechanical connecting structure and installation method |
| CN206495423U (en) * | 2016-12-27 | 2017-09-15 | 北京巧力神金属结构有限公司 | Line bar connector |
| CN208293908U (en) * | 2018-02-07 | 2018-12-28 | 水利部交通运输部国家能源局南京水利科学研究院 | A kind of stress meter pre-embedded device |
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