CN113432979B - Bearing capacity detection equipment for reinforced concrete structure and reinforced concrete detection method - Google Patents
Bearing capacity detection equipment for reinforced concrete structure and reinforced concrete detection method Download PDFInfo
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- CN113432979B CN113432979B CN202110693488.0A CN202110693488A CN113432979B CN 113432979 B CN113432979 B CN 113432979B CN 202110693488 A CN202110693488 A CN 202110693488A CN 113432979 B CN113432979 B CN 113432979B
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
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Abstract
The application relates to bearing capacity detection equipment and a reinforced concrete detection method for a reinforced concrete structure, and the bearing capacity detection equipment comprises an installation column and a displacement meter, wherein a lifting assembly used for lifting the displacement meter is arranged on the installation column, and the lifting assembly comprises a driving handle, a driving screw rod and a lifting block; one end of the driving screw rod is rotatably connected to the mounting column; the lifting block is arranged on the displacement meter, the lifting block is circumferentially clamped with the mounting column, and the lifting block is in threaded connection with the driving screw rod; the driving handle is arranged on the driving screw rod. This application has and makes things convenient for operating personnel to accomplish the back with the erection column installation, will adjust the displacement meter and the effect that the roof beam is contradicted by the inspection.
Description
Technical Field
The application relates to the field of reinforced concrete detection, in particular to bearing capacity detection equipment and a reinforced concrete detection method for a reinforced concrete structure.
Background
The bearing capacity detection equipment for the reinforced concrete structure is detection equipment for carrying out a pressure resistance test on reinforced concrete.
The patent of the utility model discloses a chinese utility model with the granted publication number CN209820936U discloses an on-site detection device suitable for the bearing capacity of a reinforced concrete beam, which comprises a detected beam, a floor slab arranged at the upper end of the detected beam and bearing columns at two sides, wherein a displacement meter bracket is horizontally arranged at the lower side of the detected beam, two sides of the displacement meter bracket can be detachably fixed between the two bearing columns, and a displacement meter is arranged between the detected beam and the displacement meter bracket; the device is characterized in that a loading water tank is arranged at the upper end of the detected beam, a water delivery pipeline is arranged on one side of the loading water tank, and a plurality of strain gauges are attached to key stress points of the steel bars of the detected beam. This application has simple to operate swift effect.
When the bearing capacity of the reinforced concrete is detected, the displacement meter needs to be aligned with the middle part of the detected beam and kept perpendicular to the detected beam.
With respect to the related art among the above, the inventors consider that the following drawbacks exist: need contradict displacement meter and examined roof beam when detecting, discover to have the certain distance between displacement meter and the examined roof beam after operating personnel installs displacement meter support steel pipe between two posts, need dismantle inconvenient operating personnel's operation between two posts with the support steel pipe again.
Disclosure of Invention
In order to facilitate installation of the installation column by an operator, the displacement meter is adjusted to be abutted to the detected beam, and the application provides the bearing capacity detection equipment for the reinforced concrete structure and the reinforced concrete detection method.
First aspect, the application provides a bearing capacity check out test set that reinforced concrete structure used adopts following technical scheme:
the bearing capacity detection equipment for the reinforced concrete structure comprises an installation column and a displacement meter, wherein a lifting assembly used for lifting the displacement meter is arranged on the installation column, and the lifting assembly comprises a driving handle, a driving screw rod and a lifting block; one end of the driving screw rod is rotatably connected to the mounting column; the lifting block is arranged on the displacement meter, the lifting block is circumferentially clamped with the mounting column, and the lifting block is in threaded connection with the driving screw rod; the driving handle is arranged on the driving screw rod.
Through adopting above-mentioned technical scheme, accomplish the back with the erection column installation, if operating personnel discovers that displacement meter and examined the roof beam and have certain distance, operating personnel only need drive the drive lead screw through the handle and rotate, and drive lead screw drives the elevator and goes up and down afterwards, realizes adjusting displacement meter direction of height, makes things convenient for operating personnel to ensure that displacement meter and examined the roof beam and contradict, makes things convenient for operating personnel's operation.
Optionally, one end of the mounting column is provided with a collision assembly, and the collision assembly comprises an adjusting screw and a collision block; the adjusting screw is in threaded connection with one end of the mounting column; the conflict piece sets up in the one end that the erection column was kept away from to adjusting screw.
Through adopting above-mentioned technical scheme, when the distance between two posts increases, operating personnel realizes supporting the touch multitouch and supports tightly with the post through rotating adjusting screw, realizes that the erection column can install between the post of different intervals for the more reliable installation of erection column is between two posts.
Optionally, an adjusting assembly is arranged between the driving screw rod and the mounting column, and the adjusting assembly comprises a sliding block and a locking member for locking the sliding block on the mounting column; the sliding block is connected to the mounting column in a sliding manner along the length direction of the mounting column; one end of the driving screw rod is rotatably connected to the sliding block.
Through adopting above-mentioned technical scheme, when the length change of the roof beam that is examined, operating personnel accessible retaining member loosens the sliding block, removes the sliding block afterwards for displacement meter on the sliding block is located under the roof beam middle part that is examined, realizes locking the sliding block on the erection column through the retaining member afterwards, realizes the centering to the displacement meter again.
Optionally, the locking member comprises a driving rack, a driven rack, a large gear, a small gear and an idler gear; the large gear and the small gear are coaxially arranged, the small gear is rotationally connected to the mounting column, and the reference circle of the large gear is twice that of the small gear; the size of the reference circle of the idle wheel is consistent with that of the reference circle of the pinion, and the idle wheel is rotationally connected to the mounting column and meshed with the pinion; one end of the driving rack is provided with a connecting assembly used for being installed with the abutting block, the driving rack is connected to the installation column in a sliding mode along the length direction of the installation column, and the driving rack is meshed with the large gear; the driven rack is connected to the mounting column in a sliding mode along the length direction of the mounting column, the driven rack is meshed with the idler wheel, and one end of the driven rack is arranged on the sliding block.
By adopting the technical scheme, when the distance between the two columns changes, an operator can rotate the adjusting screw rod, the adjusting screw rod drives the driving rack to move along with the adjusting screw rod through the contact block and the connecting assembly, the driving rack drives the sliding block to move through the large gear, the small gear, the idle gear and the driven gear, the moving distance of the adjusting screw rod is L, the moving distance of the sliding block is L/2, the centering of the displacement meter is realized when the mounting column is installed between the two columns by adjusting the length of the screw rod, the operation of the operator is greatly facilitated, the centering accuracy of the displacement meter is improved, and the measurement precision of the displacement meter is improved; through auto-lock between adjusting screw and the erection column when using, on the one hand has done things to the locking of contact block, and on the other hand has also realized the locking to the sliding block.
Optionally, the connecting assembly includes a limiting block; the stopper sets up on active rack, offer on the stopper and be used for spacing the spacing groove on the stopper with the conflict piece, conflict piece radial cross-section is circular, the conflict piece is located the spacing inslot.
By adopting the technical scheme, the abutting block is positioned in the limiting groove, so that the abutting block drives the driving rack to synchronously move, and the structure is simple; during installation, an operator only needs to place the contact block in the limiting groove, then the adjusting screw is connected into the mounting column in a threaded mode, the driving rack is connected to the mounting column in a sliding mode, installation is achieved, and operation of the operator is facilitated.
Optionally, a leveling transparent pipe is arranged on the mounting column, and two ends of the leveling transparent pipe are arranged on the mounting column; the leveling transparent tube is provided with horizontal scales.
By adopting the technical scheme, after the mounting column is pre-positioned between the two columns, an operator can realize the leveling of the mounting column by adjusting the mounting column and observing the relative position of the liquid level and the horizontal scale in the leveling transparent pipe when the liquid level and the horizontal scale in the leveling transparent pipe are aligned.
Optionally, the leveling transparent pipe both ends all are provided with sealed lid, sealed covering is equipped with wears to establish the post, it is used for wearing to establish in the erection column to wear to establish the post.
By adopting the technical scheme, the sealing cover reduces the leakage of liquid in the leveling transparent pipe from the two ends of the leveling transparent pipe; when the leveling transparent pipe needs to be disassembled, an operator only needs to slide the penetrating column out of the mounting column, and the leveling transparent pipe is disassembled.
Optionally, a communicating pipe for communicating two ends of the leveling transparent pipe is arranged between the two sealing covers, one end of the communicating pipe penetrates through one sealing cover, and the other end of the communicating pipe penetrates through the other sealing cover.
By adopting the technical scheme, the communicating pipe enables the atmospheric pressures at the two ends of the leveling transparent pipe to be communicated, so that the liquid in the leveling transparent pipe flows more smoothly, the influence of the atmospheric pressure on the liquid level in the leveling transparent pipe is reduced, the leveling accuracy is improved, and the measurement accuracy of the displacement meter is further improved.
Optionally, a pre-positioning bracket is arranged on the mounting column, the pre-positioning bracket includes two support rods and a limiting rod, the two support rods are arranged in a crossed manner, and the mounting column is placed between the two support rods; the gag lever post is vertical to be set up, gag lever post one end sets up on the bracing piece, the gag lever post is used for wearing to locate the erection column.
Through adopting above-mentioned technical scheme, during the use operating personnel places the erection column between two bracing pieces for the gag lever post is worn to establish on the erection column, realizes the prepositioning to the erection column, and the reduction drives the erection column pivoted condition when operating personnel drives adjusting screw and rotates and takes place, makes things convenient for operating personnel's installation.
In a second aspect, the present application provides a method for detecting a bearing capacity of a reinforced concrete structure, which adopts the following technical scheme:
s1, steel bar surface cleaning: cleaning the reinforcing steel bars at key stress positions, and cleaning oil dirt and dust on the surfaces of the reinforcing steel bars;
s2, pasting a strain gauge: pasting the strain gauge on the steel bar, and enabling the strain gauge to be parallel to the direction of the steel bar;
s3, cleaning the concrete surface: cleaning the top surface and the bottom surface of the concrete beam to remove oil dirt and dust on the surface;
s4, pasting a strain gauge: adhering strain gauges to the top surface and the bottom surface of the concrete beam;
s5, welding and connecting wires: welding a lead-out wire and an output wire of the strain gauge;
s6, fixing the displacement sensor: installing a displacement meter through the bearing capacity detection equipment for the reinforced concrete structure;
s7, loading: pressing the concrete beam;
s8, data acquisition: and forming a load midspan displacement curve, a load strain curve and the like by using the data measured by the strain gauge and the displacement meter.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the state that the displacement meter is abutted to the detected beam is convenient for operators to ensure through the lifting assembly, the operation of the operators is convenient, and the working efficiency is improved;
2. the length of the mounting column is adjusted through the abutting assembly, the adjusting assembly and the connecting assembly, and meanwhile, the displacement meter is centered, so that the mounting of an operator on the displacement meter is further facilitated, and the measurement precision of the displacement meter is improved;
3. the mounting column is convenient for an operator to mount between the two columns through the pre-positioning support.
Drawings
Fig. 1 is a schematic structural diagram of a specific embodiment of the bearing capacity detection apparatus for a reinforced concrete structure according to the present application.
Fig. 2 is a schematic view of the structure of the mounting post of fig. 1.
Fig. 3 is a cross-sectional view of the mounting post of fig. 2, showing the lifting assembly and the adjustment assembly.
Fig. 4 is an enlarged view at a in fig. 3.
Fig. 5 is a partial view of fig. 3 showing the structure of the retaining member.
Fig. 6 is a partial view of fig. 3 showing the structure of the connecting member and the interference member.
Fig. 7 is a schematic diagram of the pre-positioning stent of fig. 3.
FIG. 8 is an overall view of FIG. 3 showing the mounting structure between the leveling transparent tube and the mounting post.
Fig. 9 is an enlarged view at B in fig. 8, showing the through-penetrating post.
Reference numerals: 1. a column; 11. a subject beam; 2. mounting a column; 21. a displacement meter; 22. a first sliding groove; 23. a second sliding groove; 24. a sliding frame body; 3. an adjustment assembly; 31. a sliding block; 32. a slide bar; 33. a locking member; 331. a driving rack; 332. a driven rack; 333. a bull gear; 334. a pinion gear; 335. an idler pulley; 4. a lifting assembly; 41. a drive handle; 42. driving the screw rod; 43. a vertical rod; 44. a lifting block; 5. a collision component; 51. adjusting the screw rod; 52. a contact block; 521. a limiting circular plate; 522. abutting against the circular plate; 6. a connecting assembly; 61. a limiting block; 62. a vertical block; 63. a connecting rod; 64. a limiting groove; 7. pre-positioning the bracket; 71. a support bar; 72. connecting columns; 73. a limiting rod; 8. leveling the transparent tube; 81. horizontal calibration; 82. a sealing cover; 83. penetrating the column; 84. a communicating pipe; 9. the water tank is loaded.
Detailed Description
The present application is described in further detail below with reference to figures 1-9.
Bearing capacity check out test set that reinforced concrete structure was used carries out the equipment that bearing capacity detected to the testee, and the testee includes two posts 1 and integrated into one piece at two examined roof beams 11 on post 1, and load tank 9 has been placed to examined roof beam 11 upper end.
The embodiment of the application discloses bearing capacity check out test set that reinforced concrete structure was used. Referring to fig. 1 and 2, the bearing capacity detecting apparatus for a reinforced concrete structure includes a mounting column 2 and a displacement meter 21; the mounting column 2 is provided with a lifting component 4 for driving the displacement meter 21 to lift; after the operator installs erection column 2 between two posts 1, accessible lifting unit 4 adjusts the position between displacement meter 21 and the examined roof beam 11, ensures the state that displacement meter 21 and examined roof beam 11 are contradicted.
Referring to fig. 3 and 4, a first sliding groove 22 extending along the length direction of the mounting column 2 is formed in the mounting column 2, two second sliding grooves 23 are formed in the side wall of the sliding groove, and the two second sliding grooves 23 are distributed along the width direction of the mounting column 2; the mounting column 2 is provided with an adjusting component 3, and the adjusting component 3 comprises a sliding block 31 and two sliding rods 32; the sliding block 31 is connected in the first sliding groove 22 in a sliding manner; two slide bar 32 homogeneous formations are on the lateral wall of sliding block 31, and two slide bar 32 distribute along the 2 width direction of erection column, and two slide bar 32 and two second grooves 23 one-to-one that slide, slide bar 32 slide and connect in second groove 23 that slides.
Referring to fig. 3 and 4, the lifting assembly 4 includes a driving handle 41, a driving screw 42, a vertical rod 43, and a lifting block 44; the driving screw rod 42 is vertically arranged, and one end of the driving screw rod 42 is rotatably connected to the upper end of the sliding block 31; one end of the vertical rod 43 is fixedly connected to the upper end of the sliding block 31; the lifting block 44 is connected to the vertical rod 43 in a sliding manner and is connected to the driving screw rod 42 in a threaded manner; the displacement meter 21 is vertically arranged, and the displacement meter 21 is fixedly connected to the upper end of the lifting block 44; the driving handle 41 is fixedly connected to the lower end of the driving screw rod 42.
When the displacement meter 21 after the installation is required to be lifted, an operator only needs to drive the driving screw rod 42 to rotate through the driving handle 41, the driving screw rod 42 drives the lifting block 44 to lift, the height of the displacement meter 21 is adjusted, the displacement meter 21 is ensured to be abutted to the detected beam 11, and the operation of the operator is facilitated.
Referring to fig. 2 and 3, one end of the mounting column 2 is provided with a collision component 5 for colliding with the column 1, and the collision component 5 comprises an adjusting screw 51 and a collision block 52; the adjusting screw 51 is in threaded connection with one end of the mounting column 2; the contact block 52 comprises a limit circular plate 521 and a contact circular plate 522; the limiting circular plate 521 is coaxially and fixedly connected to one end of the adjusting screw 51 far away from the mounting column 2; the interference circular plate 522 is coaxially and fixedly connected with one end of the limiting circular plate 521 far away from the mounting column 2.
Referring to fig. 3 and 5, the adjustment assembly 3 further includes a locker 33, the locker 33 including a driving rack 331, a driven rack 332, a large gear 333, a small gear 334, and an idle gear 335; the upper end of the mounting column 2 is fixedly connected with a sliding frame body 24, the length direction of the sliding frame body 24 is parallel to the length direction of the mounting column 2, the driving rack 331 is connected in the sliding frame body 24 in a sliding mode, and one end of the driving rack 331 is provided with a connecting assembly 6.
Referring to fig. 3 and 6, the connection assembly 6 includes a stopper 61, a vertical block 62, and a connection rod 63; the length direction of the connecting rod 63 is parallel to the length direction of the driving rack 331, and one end of the connecting rod 63 and one end of the driving rack 331 are integrally formed; the vertical block 62 is fixedly connected to one end of the connecting rod 63 far away from the driving rack 331, and the vertical block 62 is positioned on one side of the limiting circular plate 521; the limiting block 61 is fixedly connected to one end, close to the limiting circular plate 521, of the vertical block 62, a limiting groove 64 is formed in one end, close to the limiting circular plate 521, of the limiting block 61, and the limiting circular plate 521 is partially located in the limiting groove 64.
Referring to fig. 3 and 5, the longitudinal direction of the driven rack 332 is parallel to the longitudinal direction of the mounting post 2, and one end of the driven rack 332 is fixedly connected to one end of the sliding block 31 close to the limiting circular plate 521; the large gear 333 is coaxially and fixedly connected with the small gear 334, the reference circle of the large gear 333 is twice that of the small gear 334, the large gear 333 is positioned between the driving rack 331 and the driven rack 332, the small gear 334 is positioned between the large gear 333 and the mounting column 2, the small gear 334 is rotatably connected to the upper end of the mounting column 2, and the large gear 333 is meshed with the driving rack 331; the reference circle of the idle gear 335 is the same as the reference circle of the pinion gear 334, the idle gear 335 is positioned between the pinion gear 334 and the driven rack 332, the idle gear 335 is rotatably connected to the upper end of the mounting post 2, the idle gear 335 is meshed with the pinion gear 334, and the idle gear 335 is meshed with the driven rack 332.
When the distance between the two columns 1 changes and an operator needs to adjust the length of the mounting column 2, the operator only needs to drive the contact block 52 to rotate, the contact block 52 drives the driving rack 331 to move through the connecting component 6, the driving rack 331 drives the driven rack 332 to move through the large gear 333, the small gear 334 and the idle gear 335, the moving distance of the sliding block 31 is L/2 when the moving distance of the contact block 52 is L, and the adjusting screw 51 realizes self-locking of the contact block 52 and locking of the sliding block 31.
Referring to fig. 3 and 7, the mounting post 2 is provided with a pre-positioning bracket 7, and the pre-positioning bracket 7 includes four support rods 71, a connecting post 72 and a limiting rod 73; two of the support rods 71 are crossed and integrally formed, the other two support rods 71 are crossed and integrally formed, and the mounting column 2 is placed between the two support rods 71; two ends of the connecting column 72 are respectively and fixedly connected with the intersection of the two support rods 71; the limiting rod 73 is vertically arranged, the lower end of the limiting rod 73 is integrally formed between the two supporting rods 71, and the limiting rod 73 is used for being arranged on the mounting column 2 in a penetrating mode.
Referring to fig. 8 and 9, a leveling transparent tube 8 is arranged on the mounting column 2, a horizontal scale 81 is arranged on the leveling transparent tube 8, and liquid is stored in the leveling transparent tube 8; the two ends of the leveling transparent pipe 8 are fixedly connected with sealing covers 82, the side walls of the sealing covers 82 are fixedly connected with penetrating columns 83, and the penetrating columns 83 penetrate through the mounting columns 2; a communication pipe 84 is arranged between the two sealing covers 82, one end of the communication pipe 84 is communicated with one sealing cover 82, and the other end of the communication pipe 84 is communicated with the other sealing cover 82.
When the mounting column 2 needs to be leveled, an operator only needs to adjust the mounting column 2, so that when the horizontal scale 81 is consistent with the liquid level in the leveling transparent pipe 8, the leveling of the mounting column 2 is realized, the liquid in the leveling transparent pipe 8 can flow more easily through the communicating pipe 84, the leveling accuracy is improved, and the operation is convenient.
The implementation principle of the bearing capacity check out test set that reinforced concrete structure used of this application embodiment is: when the mounting column is used, an operator penetrates the supporting rods 71 into soil, then the mounting column 2 is placed on the two supporting rods 71, and the limiting rod 73 penetrates into the mounting column 2 to limit circumferential rotation of the mounting column 2; an operator rotates the adjusting screw 51 to enable the interference circular plate 522 to be abutted against one of the columns 1, the limiting circular plate 521 on the interference circular plate 522 drives the sliding block 31 through the connecting assembly 6, the driving rack 331, the large gear 333, the small gear 334, the idle gear 335 and the driven rack 332, the length of the mounting column 2 is adjusted, meanwhile, the centering of the displacement meter 21 is achieved, the operation of the operator is facilitated, and the measuring accuracy is improved; the operator then effects leveling of the mounting post 2 by leveling the transparent tube 8.
After the mounting column 2 is mounted between the two columns 1, an operator drives the driving handle 41 to drive the driving screw rod 42 to rotate, the driving screw rod 42 drives the lifting block 44 to lift, so that the height direction of the displacement meter 21 is adjusted, and the displacement meter 21 is ensured to be abutted to the detected beam 11.
The embodiment of the application also discloses a method for detecting the bearing capacity of the reinforced concrete structure, which comprises the following steps:
s1, steel bar surface cleaning: cleaning the reinforcing steel bars at key stress positions, and cleaning oil dirt and dust on the surfaces of the reinforcing steel bars;
s2, pasting a strain gauge: pasting the strain gauge on the steel bar, and enabling the strain gauge to be parallel to the direction of the steel bar;
s3, cleaning the concrete surface: cleaning the top surface and the bottom surface of the concrete beam to remove oil dirt and dust on the surface;
s4, pasting a strain gauge: adhering strain gauges to the top surface and the bottom surface of the concrete beam;
s5, welding and connecting wires: welding a lead-out wire and an output wire of the strain gauge;
s6, fixing the displacement sensor: installing a displacement meter through the bearing capacity detection equipment for the reinforced concrete structure;
s7, loading: pressing the concrete beam;
s8, data acquisition: and forming a load midspan displacement curve, a load strain curve and the like by using the data measured by the strain gauge and the displacement meter.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (6)
1. Bearing capacity check out test set that reinforced concrete structure was used, its characterized in that: the device comprises an installation column (2) and a displacement meter (21), wherein a lifting component (4) used for lifting the displacement meter (21) is arranged on the installation column (2), and the lifting component (4) comprises a driving handle (41), a driving screw rod (42) and a lifting block (44); one end of the driving screw rod (42) is rotatably connected to the mounting column (2); the lifting block (44) is arranged on the displacement meter (21), the lifting block (44) is circumferentially clamped with the mounting column (2), and the lifting block (44) is in threaded connection with the driving screw rod (42); the driving handle (41) is arranged on the driving screw rod (42);
one end of the mounting column (2) is provided with a collision component (5), and the collision component (5) comprises an adjusting screw rod (51) and a collision block (52); the adjusting screw rod (51) is in threaded connection with one end of the mounting column (2); the contact block (52) is arranged at one end of the adjusting screw rod (51) far away from the mounting column (2);
an adjusting assembly (3) is arranged between the driving screw rod (42) and the mounting column (2), and the adjusting assembly (3) comprises a sliding block (31) and a locking piece (33) used for locking the sliding block (31) on the mounting column (2); the sliding block (31) is connected to the mounting column (2) in a sliding manner along the length direction of the mounting column (2); one end of the driving screw rod (42) is rotatably connected to the sliding block (31);
the locking piece (33) comprises a driving rack (331), a driven rack (332), a large gear (333), a small gear (334) and an idle gear (335); the large gear (333) and the small gear (334) are coaxially arranged, the small gear (334) is rotationally connected to the mounting column (2), and the reference circle of the large gear (333) is twice that of the small gear (334); the reference circle of the idle gear (335) is consistent with the reference circle of the pinion (334), and the idle gear (335) is rotationally connected to the mounting column (2) and meshed with the pinion (334); one end of the driving rack (331) is provided with a connecting component (6) used for being installed with the contact block (52), the driving rack (331) is connected to the installation column (2) in a sliding mode along the length direction of the installation column (2), and the driving rack (331) is meshed with the large gear (333); the driven rack (332) is connected to the mounting column (2) in a sliding mode along the length direction of the mounting column (2), the driven rack (332) is meshed with the idle wheel (335), and one end of the driven rack (332) is arranged on the sliding block (31);
the connecting assembly (6) comprises a limiting block (61); the limiting block (61) is arranged on the driving rack (331), a limiting groove (64) used for limiting the contact block (52) on the limiting block (61) is formed in the limiting block (61), the radial section of the contact block (52) is circular, and the contact block (52) is located in the limiting groove (64).
2. The bearing capacity detecting apparatus for a reinforced concrete structure according to claim 1, wherein: the mounting column (2) is provided with a leveling transparent pipe (8), and two ends of the leveling transparent pipe (8) are arranged on the mounting column (2); the leveling transparent tube (8) is provided with a horizontal scale (81).
3. The bearing capacity detecting apparatus for a reinforced concrete structure according to claim 2, wherein: the leveling transparent pipe (8) is characterized in that sealing covers (82) are arranged at two ends of the leveling transparent pipe, a penetrating column (83) is arranged on each sealing cover (82), and the penetrating column (83) is used for penetrating into the mounting column (2).
4. The bearing capacity detecting apparatus for a reinforced concrete structure according to claim 3, wherein: a communicating pipe (84) used for communicating two ends of the leveling transparent pipe (8) is arranged between the two sealing covers (82), one end of the communicating pipe (84) penetrates through one sealing cover (82), and the other end of the communicating pipe (84) penetrates through the other sealing cover (82).
5. The bearing capacity detecting apparatus for a reinforced concrete structure according to claim 1, wherein: a pre-positioning support (7) is arranged on the mounting column (2), the pre-positioning support (7) comprises two support rods (71) and a limiting rod (73), the two support rods (71) are arranged in a crossed mode, and the mounting column (2) is placed between the two support rods (71); the limiting rod (73) is vertically arranged, one end of the limiting rod (73) is arranged on the supporting rod (71), and the limiting rod (73) is used for penetrating through the mounting column (2).
6. A method for detecting the bearing capacity of a reinforced concrete structure is characterized by comprising the following steps:
s1, steel bar surface cleaning: cleaning the reinforcing steel bars at key stress positions, and cleaning oil dirt and dust on the surfaces of the reinforcing steel bars;
s2, pasting a strain gauge: pasting the strain gauge on the steel bar, and enabling the strain gauge to be parallel to the direction of the steel bar;
s3, cleaning the concrete surface: cleaning the top surface and the bottom surface of the concrete beam to remove oil dirt and dust on the surface;
s4, pasting a strain gauge: adhering strain gauges to the top surface and the bottom surface of the concrete beam;
s5, welding and connecting wires: welding an outgoing line and an output line of the strain gauge;
s6, fixing the displacement sensor: installing a displacement meter by the bearing capacity detecting device for the reinforced concrete structure according to any one of claims 1 to 5;
s7, loading: pressing the concrete beam;
s8, data acquisition: and forming a load midspan displacement curve and a load strain curve by using the data measured by the strain gauge and the displacement meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110693488.0A CN113432979B (en) | 2021-06-22 | 2021-06-22 | Bearing capacity detection equipment for reinforced concrete structure and reinforced concrete detection method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110693488.0A CN113432979B (en) | 2021-06-22 | 2021-06-22 | Bearing capacity detection equipment for reinforced concrete structure and reinforced concrete detection method |
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| Publication Number | Publication Date |
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| CN113432979A CN113432979A (en) | 2021-09-24 |
| CN113432979B true CN113432979B (en) | 2022-08-05 |
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| CN202110693488.0A Active CN113432979B (en) | 2021-06-22 | 2021-06-22 | Bearing capacity detection equipment for reinforced concrete structure and reinforced concrete detection method |
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Citations (10)
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