A method for detecting the strength of concrete

Abstract

The present invention provides a method for detecting the strength of concrete, which comprises the following steps: installing a concrete strength detection device on a column to be detected, and adjusting the outer support frame of the concrete strength detection device so that its inner contour is adapted to the outer contour of the column to be detected; controlling the column climbing mechanism of the concrete strength detection device to approach the core detection area to be detected of the column to be detected; controlling the strength detection component of the concrete strength detection device to simultaneously detect a plurality of concrete strength detection points in the core detection area to be detected of the column to be detected. The present invention simultaneously detects a plurality of concrete strength detection points in the core detection area to be detected of the column to be detected to obtain the concrete strength of the detection area at the beam-column joint, can quickly detect a plurality of points, improves the detection efficiency, and solves the problem of low detection efficiency of the concrete strength detection at the existing beam-column joint.

Description

Technical Field

[0001] The present invention relates to the technical field of concrete strength detection, and more particularly, to a method for detecting concrete strength. Background Art

[0002] A concrete detection device is a measuring device used to evaluate the quality and performance of a concrete structure. The rebound method is the most commonly used detection method, which estimates the compressive strength of concrete by the restoring force of the instantaneous elastic deformation generated by hitting the concrete surface, and is a non-destructive detection method.

[0003] When pouring concrete, according to the "Code for Construction of Concrete Structures" (GB 50666-2011), when the concrete of columns is one grade higher than that of the beam and slab, it is necessary to be confirmed by the design unit before pouring the same grade of concrete as the beam and slab at the beam-column joint; when the concrete of columns is two grades higher than that of the beam and slab, it is necessary to adopt separation measures at the joint. Therefore, the concrete strength at the beam-column joint is crucial. When detecting the concrete strength, due to the high elevation of the beam-column joint, it is necessary to rely on climbing equipment such as ladders, which poses safety hazards and has low detection efficiency. Summary of the Invention

[0004] In view of this, the present invention proposes a method for detecting concrete strength, aiming to solve the problem of low detection efficiency of the existing concrete strength detection at the beam-column joint.

[0005] The present invention proposes a method for detecting concrete strength. The method for detecting concrete strength uses a concrete strength detection device capable of automatically climbing columns to detect the concrete strength, and includes the following steps: an installation step of installing the concrete strength detection device on the column to be detected and adjusting the outer support frame of the concrete strength detection device so that its inner contour is adapted to the outer contour of the column to be detected; a crawling step of controlling the column-climbing mechanism of the concrete strength detection device to drive the concrete strength detection device to approach the core detection area to be detected of the column to be detected until the concrete strength detection device moves to the beam-column joint detection area to be detected of the column to be detected; and a detection step of controlling the strength detection component of the concrete strength detection device to simultaneously detect multiple concrete strength detection points in the core detection area to be detected of the column to be detected to obtain the concrete strength of the beam-column joint detection area to be detected.

[0006] Further, in the above method for detecting concrete strength, the concrete strength detection device includes: an outer telescopic support frame for surrounding the concrete column structure; a column-climbing mechanism provided inside the outer support frame for crawling along the axial direction of the concrete column structure to climb to a preset core detection area; and a strength detection component provided on the outer support frame for simultaneously detecting multiple concrete strength detection points.

[0007] Furthermore, in the above concrete strength detection method, the outer support frame includes: two first telescopic frames and two second telescopic frames; wherein, the two first telescopic frames are arranged side by side and at intervals, the two second telescopic frames are arranged between the two first telescopic frames, and the two ends of the two second telescopic frames are respectively connected to two corresponding ends of the two first telescopic frames, and the two first telescopic frames and the two second telescopic frames enclose a rectangular structure.

[0008] Furthermore, in the above concrete strength detection method, the first telescopic frame and / or the second telescopic frame includes: a fixed support plate; two telescopic outer shells sleeved at both ends of the fixed support plate, and both of the two telescopic outer shells are connected to the fixed support plate in a slidable manner along the length direction of the fixed support plate for telescopic adjustment to adjust the overall length of the combination of the fixed support plate and the two telescopic outer shells.

[0009] Furthermore, in the above concrete strength detection method, the telescopic outer shell is connected with a driving assembly for driving the telescopic movement of the telescopic outer shell.

[0010] Furthermore, in the above concrete strength detection method, the driving assembly includes: a rotating central wheel for rotating under the action of an external force; a transmission member having two power output ends, the power input end of the transmission member is connected to the rotating central wheel, and the two power output ends of the transmission member are respectively connected to the two telescopic outer shells for converting the rotation of the rotating central wheel into the approaching or separating movement of the two telescopic outer shells.

[0011] Furthermore, in the above concrete strength detection method, the transmission member includes: a transmission gear arranged on the rotating central wheel; two racks respectively connected to the two telescopic outer shells, the two racks are respectively arranged on both sides of the rotating central wheel, and both of the two racks are meshed with the transmission gear, and when the transmission gear rotates with the rotating central wheel, the two racks drive the two telescopic outer shells to approach or separate.

[0012] Further, for the above concrete strength detection method, the detection steps include the following sub-steps: a detection frequency sub-step, based on the standard detection height of the strength detection component and the width to be detected in the beam-column joint area to be detected, determining the initial detection position, the detection frequency, and the detection interval distance; a data acquisition sub-step, controlling the concrete strength detection device to the initial detection position in the beam-column joint area to be detected of the column to be detected, detecting the strength of the column to be detected at the initial detection position, and controlling the concrete strength detection device to crawl successively at the detection interval distance to perform sequential strength detection on each corresponding detection position until the concrete strength detection in the beam-column joint area to be detected is completed, and obtaining several groups of concrete strength data; a data processing sub-step, successively performing strength outlier tests on several groups of concrete strength data, and if there are strength outliers, removing the strength outliers; an averaging sub-step, calculating the average value of the concrete strength data after removing the strength outliers to obtain the average value of the concrete strength data, which is used as the concrete strength in the beam-column joint area to be detected.

[0013] Further, for the above concrete strength detection method, the detection frequency sub-step specifically includes: based on the standard detection height of the strength detection component and the width to be detected in the beam-column joint area to be detected, using the following formula to determine the difference detection multiple Δn between the standard detection height of the strength detection component and the width to be detected in the beam-column joint area to be detected:

[0014] Δn = floor(K / B),

[0015] where K is the width to be detected in the beam-column joint area to be detected, and B is the standard detection height of the strength detection component;

[0016] Set a first preset difference multiple n1, a second preset difference multiple n2, a third preset difference multiple n3, and a fourth preset difference multiple n4, and set a first preset detection interval L1, a second preset detection interval L2, a third preset detection interval L3, and a fourth preset detection interval L4. Also set a preset detection frequency difference reference value matrix N, set ΔN (ΔN1, ΔN2, ΔN3, ΔN4), where the first preset detection frequency difference reference value ΔN1, the second preset detection frequency difference reference value ΔN2, the third preset detection frequency difference reference value ΔN3, and the fourth preset detection frequency difference reference value ΔN4; according to the relationship between the difference detection multiple between the standard detection height of the strength detection component and the width to be detected in the beam-column joint area to be detected and each of the detection frequencies, select each of the preset detection intervals as the detection interval distance of the strength detection component and determine the detection frequency:

[0017] When Δn < n1, select the first preset detection interval L1 as the detection interval distance of the strength detection component, and select Δn - ΔN1 as the detection frequency;

[0018] When n1≤Δn<n2, a second preset detection interval L2 is selected as the detection interval of the intensity detection component, and Δn-ΔN2 is selected as the number of detections;

[0019] When n2≤Δn<n3, a third preset detection interval L3 is selected as the detection interval of the intensity detection component, and Δn-ΔN3 is selected as the number of detections;

[0020] When n3≤Δn<n4, the fourth preset detection interval L4 is selected as the detection interval of the intensity detection component, and Δn-ΔN4 is selected as the number of detections;

[0021] Based on the difference detection multiple Δn between the standard detection height of the strength detection component and the width to be detected of the beam-column junction area to be detected, the detection interval spacing of the strength detection component, and the number of detections, the initial detection position is determined according to the following formula:

[0022] ΔH=floor[(KH*f) / 2],

[0023] Wherein, f is the number of detections, K is the width of the beam-column junction area to be detected, and H is the detection interval spacing of the strength detection component.

[0024] Furthermore, in the above concrete strength detection method, the data processing sub-step adopts the Grubbs criterion to eliminate outliers.

[0025] The concrete strength detection method provided by the present invention comprises the following steps: installing the concrete strength detection device on the column to be detected, and adjusting the outer support frame of the concrete strength detection device so that its inner contour is adapted to the outer contour of the column to be detected; controlling the column climbing mechanism of the concrete strength detection device to drive the concrete strength detection device to approach the core detection area of the column to be detected, until the concrete strength detection device moves to the beam-column junction detection area of the column to be detected; controlling the strength detection component of the concrete strength detection device to simultaneously detect multiple concrete strength detection points in the core detection area of the column to be detected, so as to obtain the concrete strength of the beam-column junction detection area, and can quickly perform detection of multiple points, thereby improving the detection efficiency and solving the problem of low detection efficiency of concrete strength detection at the existing beam-column junction. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0027] Figure 1 It is a flowchart of the concrete strength detection method provided by the embodiment of the present invention;

[0028] Figure 2 It is a structural schematic diagram of the concrete strength detection device that can automatically climb columns provided by the embodiment of the present invention;

[0029] Figure 3 It is a structural schematic diagram of the inner side wall of the outer support frame provided by the embodiment of the present invention;

[0030] Figure 4 It is a structural schematic diagram of the wall-climbing mechanism provided by the embodiment of the present invention;

[0031] Figure 5 It is a structural schematic diagram of the strength detection component provided by the embodiment of the present invention;

[0032] Figure 6 It is a structural schematic diagram of the first telescopic frame body provided by the embodiment of the present invention;

[0033] Figure 7 It is a structural schematic diagram of the first driving component provided by the embodiment of the present invention;

[0034] Figure 8 It is a structural schematic diagram of the second telescopic frame body provided by the embodiment of the present invention;

[0035] Figure 9 It is a structural schematic diagram of the flexible connecting piece provided by the embodiment of the present invention;

[0036] Figure 10 It is a structural schematic diagram of the data transmission controller provided by the embodiment of the present invention;

[0037] Figure 11 It is a flowchart of the detection steps provided by the embodiment of the present invention;

[0038] Figure 12 It is a flowchart of the detection times sub-step provided by the embodiment of the present invention. Detailed implementation manners

[0039] Hereinafter, exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be completely conveyed to those skilled in the art. It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other. Hereinafter, the present invention will be described in detail with reference to the drawings and in conjunction with the embodiments.

[0040] See Figure 1 , which is a flowchart of the concrete strength detection method provided by the embodiment of the present invention. As shown in the figure, this concrete strength detection method uses a concrete strength detection device that can automatically climb columns to detect the concrete strength. This concrete strength detection method includes the following steps:

[0041] Installation step S1: Install the concrete strength detection device on the column to be detected, and adjust the outer support frame of the concrete strength detection device so that its inner contour matches the outer contour of the column to be detected.

[0042] Specifically, install the concrete strength detection device on the outer periphery of the column to be detected, and perform telescopic adjustment on the outer support frame 1 of the concrete strength detection device so that its inner contour matches the outer contour of the column to be detected, that is, the inner wall is closely attached to the outer contour of the column to be detected, especially making the column climbing mechanism 2 closely attached to the outer contour of the column to be detected.

[0043] Climbing step S2: Control the column climbing mechanism of the concrete strength detection device to drive the concrete strength detection device to approach the core detection area to be detected of the column to be detected until the concrete strength detection device moves to the detection area to be detected at the beam-column joint of the column to be detected.

[0044] Specifically, control the column climbing mechanism 2 of the concrete strength detection device to drive the concrete strength detection device to approach the core detection area to be detected of the column to be detected, that is, climb upward, until the concrete strength detection device moves to the detection area to be detected at the beam-column joint of the column to be detected.

[0045] Detection step S3: Control the strength detection component of the concrete strength detection device to simultaneously detect multiple concrete strength detection points in the core detection area to be detected of the column to be detected, so as to obtain the concrete strength of the detection area to be detected at the beam-column joint.

[0046] Specifically, control the strength detection component of the concrete strength detection device to simultaneously detect multiple concrete strength detection points in the core detection area to be detected of the column to be detected, so as to obtain the concrete strength of the detection area to be detected at the beam-column joint.

[0047] See Figures 2 to 3, which shows the preferred structure of the concrete strength detection device capable of automatically climbing columns provided by the embodiments of the present invention. As shown in the figure, the detection device includes: an outer support frame 1, a wall-climbing mechanism 2, and a strength detection component 3; wherein, the outer support frame 1 is used to surround the concrete column structure; the wall-climbing mechanism 2 is arranged inside the outer support frame 1 and is used to crawl along the axial direction of the concrete column structure to climb to a preset core detection area, that is, the beam-column joint; the strength detection component 3 is arranged on the outer support frame 1 and is used to simultaneously detect multiple concrete strength detection points.

[0048] Specifically, the outer support frame 1 is a square outer frame structure adapted to the concrete column structure and is used to surround the outer periphery of the concrete column structure to be fixed to the concrete column structure. The wall-climbing mechanism 2 is arranged inside the outer support frame 1 and is used to drive the outer support frame 1 and the strength detection component 3 to crawl along the axial direction of the concrete column structure to climb to a preset core detection area, and then the strength of the preset core detection area is detected by the strength detection component 3. Among them, the wall-climbing mechanism 2 can refer to the self-lifting column-climbing device in the self-lifting column-climbing device and the self-lifting wind power equipment maintenance system disclosed in Chinese Patent Publication No. CN202785541U, or it can be other wall-climbing mechanisms, such as the negative pressure type wall-climbing carrier in a wall-climbing image acquisition device disclosed in CN218647439U. It can also climb the wall through column-climbing wheels, as long as it can climb the wall. In this embodiment, no limitation is imposed on it. As Figure 4 shown, the wall-climbing mechanism 2 can be an automatic column-climbing wheel 21, and a limit fixator 22 is also arranged on the automatic column-climbing wheel 21 to lock the automatic column-climbing wheel 21 so that the automatic column-climbing wheel 21 is positioned on the concrete column structure to realize the fixation and stop of the device. In this embodiment, an installation buckle 23 can also be arranged on the wall-climbing mechanism 2 for installation on the outer support frame 1 to realize the connection and fixation between the wall-climbing mechanism 2 and the outer support frame 1. In this embodiment, as Figure 4 shown, the strength detection component 3 includes a fixed support plate 31; a number of detection points 311 arranged in a row are provided on the fixed support plate 31, and detection components are arranged at each detection point 311 to simultaneously detect the strength of the columns corresponding to multiple detection points. In this embodiment, the number of detection points 311 can be 16, or it can be other numbers. In this embodiment, no limitation is imposed on it. Among them, the detection method of each detection component can refer to the measurement component in the concrete strength detection device for building construction disclosed in Chinese Patent Publication No. CN118706655A, and the rebound detection is carried out on the concrete column structure surrounded by the outer support frame 1, that is, the compressive strength of the concrete is deduced by the restoring force of the instantaneous elastic deformation generated by hitting the concrete surface.

[0049] Continue to refer to Figure 2, the outer support frame 1 is a telescopic support frame to adapt to concrete column structures with different cross-sections. The outer support frame 1 includes: two first telescopic frames 11 and two second telescopic frames 12. Among them, the two first telescopic frames 11 are arranged side by side and at intervals, and the two second telescopic frames 12 are arranged between the two first telescopic frames 11. Moreover, the two ends of the two second telescopic frames 12 are respectively connected to two corresponding ends of the two first telescopic frames 11. The two first telescopic frames 11 and the two second telescopic frames 12 enclose a rectangular structure.

[0050] Specifically, the first telescopic frame 11 serves as the long-side side, and the second telescopic frame 12 can serve as the short-side side. The two first telescopic frames 11 and the two second telescopic frames 12 enclose a rectangular structure. The concrete strength detection method is to estimate the compressive strength of concrete through the restoring force of the instantaneous elastic deformation generated by hitting the concrete surface. Since hitting the concrete surface will generate a large vibration load, to avoid the vibration of the outer support frame 1, preferably, the first telescopic frame 11 and the second telescopic frame 12 are connected by a flexible connector 13 to reduce the adverse effects caused by the vibration load.

[0051] See Figure 6 , which is a schematic structural diagram of the first telescopic frame provided by an embodiment of the present invention. As shown in the figure, the first telescopic frame 11 includes: a first fixed support plate 111 and a first telescopic housing 112. Among them, the first telescopic housing 112 is sleeved on the end of the first fixed support plate 111. Moreover, the first telescopic housing 112 is connected to the first fixed support plate 111 in a slidable manner along the length direction of the first fixed support plate 111 (such as Figure 6 the horizontal direction shown) for telescopic adjustment to adjust the overall length of the combination of the first fixed support plate 111 and the first telescopic housing 112.

[0052] Specifically, the first fixed support plate 111 serves as a support plate member, and the first telescopic housing 112 is slidably sleeved on the outer periphery of the first fixed support plate 111 along the length direction of the first fixed support plate 111 (such as Figure 6 the horizontal direction shown) to adjust the distance between the two second telescopic frames 12 connected thereto. In this embodiment, the first telescopic housing 112 is further connected with a first driving assembly 113 for driving the sliding of the first telescopic housing 112 to adjust the telescoping of the first telescopic housing 112. The first telescopic housing 112 is also provided with a first telescopic control buckle 114 for controlling the first telescopic housing 112 to be locked and fixed when the first telescopic housing 112 slides in place. For example, the first telescopic housing 112 can be locked to the first fixed support plate 111 to prevent the self-sliding of the first telescopic housing 112.

[0053] See Figure 7 , which is a schematic structural diagram of the first driving component provided by an embodiment of the present invention. As shown in the figure, the first driving component 113 includes: a first rotating center wheel 1131 and a first transmission member 1132; wherein, the first rotating center wheel 1131 is used to rotate under the action of an external force; the power input end of the first transmission member 1132 is connected to the rotating center wheel 1131, and the power output end of the transmission member is connected to the first telescopic housing 112, and is used to convert the rotation of the rotating center wheel 1131 into the reciprocating linear motion of the first telescopic housing 112.

[0054] In an implementation manner of this embodiment, the first transmission member 1132 can be a telescopic chain. A motion track 1133 is provided on the first fixed support plate 111. The telescopic chain is slidably placed in the motion track, connected to the first rotating center wheel 1131 at one end, and can be wound around the first rotating center wheel 1131, and connected to the first telescopic housing 112 at the other end, and is used to pull the first telescopic housing 112 to slide. In this embodiment, a limit buckle 1334 can also be provided at the end of the telescopic chain, and is used to be fixed on the first fixed support plate 111 after the telescopic chain moves in place, so as to realize the locking of the telescopic chain. Among them, the rotation of the first rotating center wheel 1131 can drive the telescopic chain to reciprocate in the motion track, so as to pull the first telescopic housing 112 to slide, and after the first telescopic housing 112 slides in place, the telescopic chain is locked by the limit buckle 1334. Of course, the first transmission member 1132 can also be other structures, and no limitation is made thereto in this embodiment.

[0055] In another implementation manner of this embodiment, the first transmission member 1132 can be a gear-rack structure.

[0056] See Figure 8 , which is a schematic structural diagram of the second telescopic frame body provided by an embodiment of the present invention. As shown in the figure, the second telescopic frame body 12 includes: a second fixed support plate 121 and two second telescopic housings 122; wherein, the second telescopic housing 122 is sleeved at both ends of the second fixed support plate 121 (such as Figure 7at the left and right ends shown), and both of the second telescopic housings 122 are connected to the second fixed support plate 121 in a slidable manner along the length direction of the second fixed support plate 121 for telescopic adjustment to adjust the overall length of the combination of the second fixed support plate 121 and the two second telescopic housings 122. Specifically, the structure of the second telescopic frame 12 can also refer to that of the first telescopic frame 11, the difference being that telescopic housings are provided at both ends, and the length is adjusted by the synchronous telescoping of the two second telescopic housings 122 to adjust the lengths of the two first telescopic frames 11. In this embodiment, the second telescopic housing 122 is further connected to a second driving assembly 123 for driving the synchronous telescoping of the two second telescopic housings 122. The second telescopic housing 122 is further provided with a second telescopic control buckle 124 for controlling the locking and fixing of the second telescopic housing 122 when the second telescopic housing 122 slides in place. For example, the second telescopic housing 122 can be locked to the second fixed support plate 121 to prevent the second telescopic housing 122 from sliding by itself.

[0057] In this embodiment, the structure of the second driving assembly 123 can refer to that of the first driving assembly 113. Among them, the second driving assembly 123 can include: a second rotating center wheel and a second transmission member; wherein, the second rotating center wheel is used for rotating under the action of an external force; the second transmission member has two power output ends, the power input end of the second transmission member is connected to the second rotating center wheel, and the two power output ends of the second transmission member are respectively connected to the two second telescopic housings 122 for converting the rotation of the second rotating center wheel into the relative movement or the opposite movement of the two second telescopic housings. Specifically, by converting the rotation of the second rotating center wheel into the relative movement or the opposite movement of the two second telescopic housings 122 through the second transmission member, the synchronous telescoping of the two second telescopic housings 122 can be realized, thereby improving the efficiency of telescopic adjustment.

[0058] In one implementation of this embodiment, the second transmission member can be a hoisting structure, which includes: a hoisting wheel is arranged on the second rotating center wheel; one ends of two connecting ropes are both arranged on the hoisting wheel, and the other ends extend in two opposite directions and are respectively connected to the two second telescopic housings 122, and are used for when the hoisting wheel rotates with the rotating center wheel, the two connecting ropes are wound onto the hoisting wheel for winding, so as to pull the two second telescopic housings 122 to move towards each other; two elastic stretching members respectively correspond to the two second telescopic housings 122, the two elastic stretching members are respectively arranged between the corresponding second telescopic housing 122 and the second fixed support plate 121, and two ends of the two elastic stretching members are respectively connected to the corresponding second telescopic housing 122 and the second fixed support plate 121, and are used for elastically deforming when the connecting ropes pull the two second telescopic housings 122 to move away from each other, and applying a force to the two second telescopic housings 122 when the connecting ropes are released, so that the two second telescopic housings 122 move towards each other.

[0059] In another implementation of this embodiment, the second transmission member can be a hoisting structure, which includes: a hoisting wheel, two connecting ropes, and an elastic stretching member; wherein, the hoisting wheel is arranged on the rotating center wheel; one ends of the two connecting ropes are both arranged on the hoisting wheel, and the other ends extend in two opposite directions and are respectively connected to the two second telescopic housings 122, and are used for when the hoisting wheel rotates with the rotating center wheel, the two connecting ropes are wound onto the hoisting wheel for winding, so as to pull the two second telescopic housings to move towards each other, and the two connecting ropes are released from the hoisting wheel; two ends of the elastic stretching member are respectively connected to the two second telescopic housings 122, and are used for elastically deforming when the connecting ropes pull the two second telescopic housings to move away from each other, and applying a force to the two second telescopic housings when the connecting ropes are released, so that the two second telescopic housings move towards each other.

[0060] In the above two implementations, the connecting rope can refer to the telescopic chain 1132 of the first driving assembly 113, and movement regulations and limit buckles can be correspondingly arranged to realize movement guidance and locking limit.

[0061] In still another implementation of this embodiment, the second transmission member includes: a transmission gear and two racks; wherein, the transmission gear is arranged on the second rotating center wheel; the two racks are respectively connected to the two second telescopic housings 122, the two racks are respectively arranged on both sides of the second rotating center wheel, and both of the two racks are meshed with the transmission gear, and when the transmission gear rotates with the rotating center wheel, the two racks drive the two second telescopic housings 122 to move towards each other or move away from each other.

[0062] See Figure 9 , which is a schematic structural diagram of the flexible connector provided by the embodiment of the present invention. As shown in the figure, the flexible connector 13 includes: a first connector 131, a second connector (not shown in the figure), and a damper 132; wherein, both ends of the damper 132 are respectively connected to the first connector 131 and the second connector, and the first connector 131 and the second connector are respectively used to connect the first telescopic frame 11 and the second telescopic frame 12 to achieve flexible connection between the two. Specifically, the first connector 131 and the second connector can also be flexible members, which can reduce the adverse effects of vibration loads on the first telescopic frame 11 and the second telescopic frame 12.

[0063] In this embodiment, a data transmission controller 31 may also be provided on the strength detection component 3 for data storage and data transmission. As Figure 10 shown, a digital display screen 311 is provided on the data transmission controller 31, which can display the rebound strength detection value of the concrete member. A control key position 312 may also be provided on the data transmission controller 31, and the detection history values for several times can also be read.

[0064] See Figure 11 , which is a flow chart of the detection steps provided by the embodiment of the present invention. As shown in the figure, the detection step S3 includes the following sub-steps:

[0065] The detection times sub-step S31, based on the standard detection height of the strength detection component and the width to be detected in the beam-column joint area to be detected, determines the initial detection position, the number of detections, and the detection interval distance.

[0066] Specifically, based on the standard detection height of the strength detection component and the width to be detected in the beam-column joint area to be detected, the initial detection position, the number of detections, and the detection interval distance are determined to determine the detection process, especially the detection positions of multiple groups of data.

[0067] The data acquisition sub-step S32, controls the concrete strength detection device to the initial detection position in the beam-column joint area to be detected of the column to be detected, performs strength detection on the column to be detected at the initial detection position, and controls the concrete strength detection device to crawl successively according to the detection interval distance to perform sequential strength detection on each corresponding detection position until the concrete strength detection in the beam-column joint area to be detected is completed, and obtains several groups of concrete strength data.

[0068] Specifically, based on the initial detection position, the number of detections, and the detection interval determined in the sub-step S31 of the number of detections, control the concrete strength detection device to the initial detection position in the to-be-detected area at the beam-column joint of the to-be-detected column, perform the initial detection, and control the concrete strength detection device to crawl successively according to the detection interval. After each crawl ends, perform strength detection on each corresponding detection position to complete each detection with the determined number of detections, that is, complete the concrete strength detection in the to-be-detected area at the beam-column joint, and obtain several groups of concrete strength data.

[0069] Data processing sub-step S33: successively perform strength outlier tests on several groups of concrete strength data. If there are strength outliers, then eliminate the strength outliers.

[0070] Specifically, successively perform strength outlier tests on several groups of concrete strength data. If there are strength outliers, then eliminate the strength outliers. The Grubbs criterion can be used to eliminate the outliers.

[0071] Average calculation sub-step S34: calculate the average value of the concrete strength data after eliminating the strength outliers to obtain the average value of the concrete strength data, which is used as the concrete strength in the to-be-detected area at the beam-column joint.

[0072] Specifically, the average value of the concrete strength data after eliminating the strength outliers can be calculated to obtain the average value of the concrete strength data, which is used as the concrete strength in the to-be-detected area at the beam-column joint.

[0073] See Figure 12 , which is the flow chart of the sub-step of the number of detections provided by the embodiment of the present invention. As shown in the figure, the sub-step S31 of the number of detections includes:

[0074] S311: Based on the standard detection height of the strength detection component and the to-be-detected width of the to-be-detected area at the beam-column joint, use the following formula to determine the difference detection multiple Δn between the standard detection height of the strength detection component and the to-be-detected width of the to-be-detected area at the beam-column joint:

[0075] Δn = floor(K / B),

[0076] where K is the to-be-detected width of the to-be-detected area at the beam-column joint, and B is the standard detection height of the strength detection component.

[0077] S312. Set the first preset difference multiple n1, the second preset difference multiple n2, the third preset difference multiple n3, and the fourth preset difference multiple n4. Also set the first preset detection distance L1, the second preset detection distance L2, the third preset detection distance L3, and the fourth preset detection distance L4. Further set the preset detection times difference reference value matrix N, and set ΔN (ΔN1, ΔN2, ΔN3, ΔN4), where the first preset detection times difference reference value ΔN1, the second preset detection times difference reference value ΔN2, the third preset detection times difference reference value ΔN3, and the fourth preset detection times difference reference value ΔN4. According to the relationship between the difference detection multiple between the standard detection height of the strength detection component and the width to be detected in the beam-column joint area to be detected, and each of the detection times, select each of the preset detection distances as the detection interval distance of the strength detection component, and determine the detection times:

[0078] When Δn < n1, select the first preset detection distance L1 as the detection interval distance of the strength detection component, and select Δn - ΔN1 as the detection times;

[0079] When n1 ≤ Δn < n2, select the second preset detection distance L2 as the detection interval distance of the strength detection component, and select Δn - ΔN2 as the detection times;

[0080] When n2 ≤ Δn < n3, select the third preset detection distance L3 as the detection interval distance of the strength detection component, and select Δn - ΔN3 as the detection times;

[0081] When n3 ≤ Δn < n4, select the fourth preset detection distance L4 as the detection interval distance of the strength detection component, and select Δn - ΔN4 as the detection times.

[0082] Among them, L1, L2, L3, L4 increase gradually, and ΔN1, ΔN2, ΔN3, ΔN4 increase gradually, and n1, n2, n3, and n4 increase gradually.

[0083] S313. Based on the difference detection multiple Δn between the standard detection height of the strength detection component and the width to be detected in the beam-column joint area to be detected, the detection interval distance of the strength detection component, and the detection times, determine the initial detection position according to the following formula:

[0084] ΔH = floor[(K - H * f) / 2],

[0085] where f is the detection times, K is the width to be detected in the beam-column joint area to be detected, and H is the detection interval distance of the strength detection component.

[0086] It can be seen that by determining the relationship between the difference detection multiple Δn between the standard detection height of the strength detection component and the to-be-detected width of the beam-column joint to-be-detected area and the number of each detection, selecting each of the preset detection spacings as the detection interval spacing of the strength detection component, and selecting the corresponding data as the number of times, it is possible to effectively adjust the detection interval spacing and the number of detections according to the relationship between the standard detection height of the strength detection component and the to-be-detected width of the beam-column joint to-be-detected area, so that appropriate positions can be selected for detection, thereby improving the detection efficiency and accuracy. Moreover, when the difference detection multiple between the standard detection height of the strength detection component and the to-be-detected width of the beam-column joint to-be-detected area is larger, the detection spacing is increased and the difference in the number of detections is reduced. In a large-scale detection area, on the premise of ensuring the accuracy of the detection data, the detection of the corresponding position is carried out precisely.

[0087] In summary, for the concrete strength detection method provided in this embodiment, the concrete strength detection device is installed on the to-be-detected column, and the outer support frame of the concrete strength detection device is adjusted so that its inner contour is adapted to the outer contour of the to-be-detected column; the column-climbing mechanism of the concrete strength detection device is controlled to drive the concrete strength detection device to approach the core to-be-detected area of the to-be-detected column until the concrete strength detection device moves to the beam-column joint to-be-detected area of the to-be-detected column; the strength detection component of the concrete strength detection device is controlled to simultaneously detect multiple concrete strength detection points in the core to-be-detected area of the to-be-detected column, so as to obtain the concrete strength of the beam-column joint to-be-detected area. Multiple points can be detected quickly, the detection efficiency is improved, and the problem of low detection efficiency in the existing concrete strength detection at the beam-column joint is solved.

[0088] It should be noted that in the description of the present invention, the terms indicating the direction or position relationship such as "upper", "lower", "left", "right", "inner", "outer", etc. are based on the direction or position relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0089] In addition, it should also be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0090] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims

1. A method for detecting the strength of concrete, characterized in that, The concrete strength detection device capable of automatically climbing columns is used to detect the concrete strength, including the following steps: An installation step, installing the concrete strength detection device on the column to be detected, and adjusting the outer support frame of the concrete strength detection device so that its inner contour is adapted to the outer contour of the column to be detected; A crawling step, controlling the column climbing mechanism of the concrete strength detection device to drive the concrete strength detection device to approach the core detection area of the column to be detected, until the concrete strength detection device moves to the detection area at the junction of the beam and column of the column to be detected; A detection step, controlling the strength detection component of the concrete strength detection device to simultaneously detect multiple concrete strength detection points in the core to-be-detected area of the to-be-detected column to obtain the concrete strength of the to-be-detected area at the junction of the beam and column; The detection step includes the following sub-steps: The detection times sub-step is to determine the initial detection position, the detection times and the detection interval spacing based on the standard detection height of the strength detection component and the detection width of the beam-column junction detection area; The data collection sub-step controls the concrete strength detection device to the initial detection position of the beam-column junction area to be detected of the column to be detected, performs strength detection on the column to be detected at the initial detection position, and controls the concrete strength detection device to crawl one by one according to the detection interval to perform strength detection on each corresponding detection position in sequence, until the concrete strength detection of the beam-column junction area to be detected is completed, and a plurality of groups of concrete strength data are obtained; In the data processing sub-step, a strength outlier test is performed on several groups of concrete strength data in turn, and if there is a strength outlier, the strength outlier is removed; The averaging sub-step is to calculate the average value of the concrete strength data after removing the abnormal strength values, and obtain the average value of the concrete strength data as the concrete strength of the beam-column junction area to be tested; The detection times sub-step specifically includes: Based on the standard detection height of the strength detection component and the width of the beam-column junction area to be detected, the phase difference detection multiple Δn between the standard detection height of the strength detection component and the width of the beam-column junction area to be detected is determined using the following formula: Δn=floor(K / B), Among them, K is the width of the inspection area at the junction of the beam and column, and B is the standard inspection height of the strength inspection component; A first preset phase difference multiple n1, a second preset phase difference multiple n2, a third preset phase difference multiple n3 and a fourth preset phase difference multiple n4 are set, and a first preset detection spacing L1, a second preset detection spacing L2, a third preset detection spacing L3 and a fourth preset detection spacing L4 are set, and a preset detection number difference reference value matrix N is set, and ΔN (ΔN1, ΔN2, ΔN3, ΔN4) is set, wherein the first preset detection number difference reference value ΔN1, the second preset detection number difference reference value ΔN2, the third preset detection number difference reference value ΔN3 and the fourth preset detection number difference reference value ΔN4 are set; according to the relationship between the phase difference detection multiple between the standard detection height of the strength detection component and the width to be detected of the beam-column junction area to be detected, and each of the detection times, each of the preset detection spacings is selected as the detection interval spacing of the strength detection component, and the detection times are determined: When Δn<n1, the first preset detection interval L1 is selected as the detection interval of the intensity detection component, and Δn-ΔN1 is selected as the number of detections; When n1≤Δn<n2, a second preset detection interval L2 is selected as the detection interval of the intensity detection component, and Δn-ΔN2 is selected as the number of detections; When n2≤Δn<n3, a third preset detection interval L3 is selected as the detection interval of the intensity detection component, and Δn-ΔN3 is selected as the number of detections; When n3≤Δn<n4, the fourth preset detection interval L4 is selected as the detection interval of the intensity detection component, and Δn-ΔN4 is selected as the number of detections; Based on the difference detection multiple Δn between the standard detection height of the strength detection component and the width to be detected of the beam-column junction area to be detected, the detection interval spacing of the strength detection component, and the number of detections, the initial detection position is determined according to the following formula: ΔH=floor[(KH*f) / 2], Among them, f is the number of tests, K is the width of the beam-column junction area to be tested, and H is the testing interval spacing of the strength testing component; The data processing sub-step uses the Grubbs criterion to eliminate outliers.

2. The concrete strength detection method according to claim 1, wherein, The concrete strength detection device comprises: An external telescopic support frame is used to surround the concrete column structure; A column climbing mechanism, arranged on the inner side of the outer support frame, for climbing along the axial direction of the concrete column structure to climb to a preset core detection area; The strength detection component is arranged on the outer support frame and is used for simultaneously detecting a plurality of concrete strength detection points.

3. The concrete strength detection method according to claim 2, characterized in that, The outer support frame includes: two first telescopic frames and two second telescopic frames; wherein, The two first telescopic frames are arranged side by side and at intervals, the two second telescopic frames are arranged between the two first telescopic frames, and the two ends of the two second telescopic frames are respectively connected to the two corresponding ends of the two first telescopic frames, and the two first telescopic frames and the two second telescopic frames are arranged to form a rectangular structure.

4. The concrete strength detection method according to claim 3, characterized in that, The first telescopic frame and / or the second telescopic frame comprises: Fixing support plate; Two telescopic housings are sleeved at both ends of the fixed support plate. Moreover, both of the two telescopic housings are connected to the fixed support plate in a slidable manner along the length direction of the fixed support plate for telescopic adjustment to adjust the overall length of the combination of the fixed support plate and the two telescopic housings.

5. The concrete strength detection method according to claim 4, wherein The telescopic housing is connected with a driving component for driving the telescopic movement of the telescopic housing.

6. The concrete strength detection method according to claim 5, characterized in that, The driving component includes: A rotary center wheel for rotating under the action of an external force; A transmission member having two power output ends. The power input end of the transmission member is connected to the rotary center wheel, and the two power output ends of the transmission member are respectively connected to the two telescopic housings for converting the rotation of the rotary center wheel into the approaching or separating movement of the two telescopic housings.

7. The concrete strength detection method according to claim 6, characterized in that, The transmission member includes: A transmission gear disposed on the rotary center wheel; Two racks respectively connected to the two telescopic housings. The two racks are respectively disposed on both sides of the rotary center wheel, and both of the two racks are engaged with the transmission gear. When the transmission gear rotates with the rotary center wheel, the two racks drive the two telescopic housings to move towards or away from each other.

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