Auxiliary device for grouting quality detection of assembly type sleeve

Abstract

The utility model relates to the technical field of assembly type structure sleeve grouting quality testing, in particular to an auxiliary device for assembly type sleeve grouting quality detection, which comprises an instrument fixing device and a steel wire, the instrument fixing device comprises a vertical supporting column, a fixing box and a laser positioner, the vertical supporting column is fixed at the bottom of the fixing box, and the steel wire is fixed at the bottom of the fixing box. The drawing instrument is mounted in the fixed box, and a drawing chuck of the drawing instrument penetrates through the side wall of the fixed box and extends out of the fixed box; the laser positioner is installed on the side wall of the fixing box, the laser emitting end of the laser positioner and the drawing end of the drawing instrument are located on the same side, the laser positioner is a cross-shaped laser positioner, and the cross center of the laser positioner is the position of a drawing point of the drawing instrument; one end of the steel wire is connected with the drawing chuck, and the other end of the steel wire is embedded in the grouting sleeve. The device is simple and clear in structure, the position of the drawing instrument and the isolation length of the steel wire are effectively controlled, manpower is effectively reduced, and the test accuracy and efficiency are obviously improved.

Description

Technical Field

[0001] The utility model relates to the technical field of assembled structure sleeve grouting quality testing, in particular to an auxiliary device for assembled sleeve grouting quality testing. Background Art

[0002] Prefabricated structure is the abbreviation of prefabricated concrete structure. It is a concrete structure formed by assembling and connecting prefabricated components as the main load-bearing components. Compared with the cast-in-place construction method, prefabricated PC structure is conducive to green construction, because prefabricated construction can better meet the requirements of green construction such as land saving, energy saving, material saving, water saving and environmental protection, and reduce the negative impact on the environment.

[0003] As a key process in prefabricated building construction, sleeve grouting is mainly used for the connection of vertical components (such as shear walls and frame columns) and horizontal components (such as frame beams). Due to the complex structure of the steel sleeve grouting connection and the fact that it is a concealed project, the detection technology of the grouting quality inside the sleeve has always been a recognized difficulty in the industry. At present, the commonly used sleeve grouting quality detection methods include drilling endoscopy, X-ray imaging, embedded sensor method and embedded steel wire pulling method. Among them, the embedded steel wire pulling method is relatively simple and easy, low in cost and has a wide range of applications. The embedded steel wire pulling method requires pre-embedded steel wire in the sleeve grouting hole before grouting. After the grouting material solidifies for 3 days, the embedded steel wire pulling section is pulled by a puller until the steel wire is completely pulled out, and the grouting fullness is judged according to the size of the pulling force. Among them, the steel wire mainly includes an anchoring section, an isolation section, a rubber plug and a pulling section. The existing testing technology mainly has the following problems: At present, most testers use a handheld puller to pull, which is easily affected by subjective and objective factors during the test, resulting in problems such as the puller shaking, the misalignment between the pulling point and the wire; secondly, during the test, the effective isolation length of the wire and the position of the rubber plug need to be adjusted according to the actual project, and the existing testing technology cannot adjust the isolation section quickly and conveniently. In summary, the above problems will lead to deviations in test data and inconvenient detection, which greatly affects the efficiency and effectiveness of the test. Utility Model Content

[0004] Aiming at the problem that the pulling point and the steel wire are easily misaligned in the hand-held pulling in the prior art, the utility model provides an auxiliary device for detecting the quality of assembled sleeve grouting.

[0005] The utility model is realized by the following technical solutions:

[0006] An auxiliary device for quality inspection of assembled sleeve grouting includes an instrument fixing device and a steel wire. The instrument fixing device includes a vertical support column, a fixing box and a laser locator. The vertical support column is fixed to the bottom of the fixing box. A pulling instrument is installed inside the fixing box. A pulling chuck of the pulling instrument passes through the side wall of the fixing box and extends out of the fixing box. A laser locator is installed on the side wall of the fixing box, and a laser emitting end of the laser locator and a pulling end of the pulling instrument are located on the same side. The laser locator is a cross-shaped laser locator, and the cross center of the laser locator is the position of the pulling point of the pulling instrument. One end of the steel wire is connected to the pulling chuck, and the other end is buried in the grouting sleeve.

[0007] Preferably, an installation box is fixed inside the fixed box, the installation box is horizontally fixed at the center of the fixed box, and forms a U-shaped box structure with the fixed box, the pulling instrument is fixed in the installation box, and the pulling axis of the pulling instrument is coaxial with the horizontal axis of the installation box.

[0008] Preferably, the steel wire is divided into an anchoring section, an isolation section and a drawing section which are connected in sequence according to their positions. The anchoring section and the isolation section are both buried in the grouting sleeve. A threaded telescopic rod is sleeved on the outer side of the isolation section. A rubber end plug is provided at one end of the threaded telescopic rod, and a rubber plug is provided at the other end. Both the rubber end plug and the rubber plug slide on the isolation section. The rubber plug is used to seal the grouting outlet of the grouting sleeve. The end of the drawing section away from the isolation section is connected to the drawing chuck.

[0009] Preferably, the threaded telescopic rod comprises a first rod and a second rod, one end of the first rod is connected to the rubber end plug, the other end of the first rod is threadedly connected to the second rod, and the other end of the second rod is connected to the rubber plug.

[0010] Preferably, a universal level bubble is installed on the top of the fixed box.

[0011] Preferably, the fixing box is made of colorless and transparent organic glass material.

[0012] Preferably, a fixing opening is provided on the fixing box, and the housing of the laser locator is fixed in the fixing opening by an adhesive.

[0013] Preferably, a manual adjustment hole is provided on a side panel of the fixed box close to the laser locator.

[0014] Preferably, the vertical support column is a telescopic rod structure.

[0015] Preferably, a plate-shaped column foot is provided at the bottom of the vertical support column.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] The utility model is an auxiliary device for quality inspection of assembled sleeve grouting, in which a fixed box is provided to effectively control the position of a puller, and a laser locator is provided on the same side as the chuck of the puller, and the pulling point of the puller is determined by using the cross center of the laser locator. During the test, the stability of the puller can be ensured by the fixed box, thereby avoiding artificial disturbance and ensuring that the pulling point and the steel wire are always centrally aligned, which can solve the problem of the puller being easily disturbed and causing the pulling point and the steel wire to be misaligned in the pre-buried steel wire pulling test for quality inspection of assembled sleeve grouting, thereby reducing the deviation of the test data and thus helping to improve the test efficiency.

[0018] Furthermore, the mounting box is used to fix the pulling instrument and provide an installation space for the pulling instrument.

[0019] Furthermore, the length of the wire isolation section can be adjusted by providing a threaded telescopic rod, and the overlapping length of the threads can be adjusted by rotating the threaded telescopic rod, thereby achieving adjustment of the length of the isolation section.

[0020] Furthermore, the universal level bubble can be used to determine the horizontal state of the fixed box and the puller, which helps to improve data accuracy.

[0021] Furthermore, the vertical support column of the telescopic rod structure can adjust the vertical height of the fixed box, thereby adjusting the height of the puller and the laser locator to adapt to pull-out tests at different heights.

[0022] Furthermore, the plate-shaped column foot is for the purpose of facilitating fixation, thereby increasing the stability of the fixed box and ensuring the accuracy of the test data. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of an auxiliary device for quality detection of assembled sleeve grouting according to the utility model;

[0024] Figure 2 It is a schematic diagram of a steel wire in an auxiliary device for quality detection of assembled sleeve grouting of the utility model;

[0025] Figure 3 It is an assembly diagram of an isolation section and a rubber end plug in an auxiliary device for quality inspection of assembled sleeve grouting of the utility model;

[0026] Figure 4 The utility model discloses an assembly diagram of an auxiliary device for detecting quality of assembled sleeve grouting.

[0027] In the figure, 1. fixing box; 2. vertical supporting column; 3. plate-shaped column foot; 4. pulling instrument; 5. manual adjustment hole; 6. laser locator; 7. rubber plug; 8. steel wire; 9. universal level bubble; 10. isolation section; 11. rubber end plug; 12. anchoring section; 13. steel bar; 14. sleeve; 15. structural longitudinal member; 16. sleeve slurry outlet; 17. fixing port; 18. ground nail. DETAILED DESCRIPTION

[0028] The present invention will be further described in detail below in conjunction with specific embodiments, which are intended to explain the present invention rather than to limit it.

[0029] The utility model discloses an auxiliary device for detecting the quality of assembled sleeve grouting, referring to Figure 1 , including an instrument fixing device and a steel wire 8, the instrument fixing device includes a vertical support column 2, a fixed box 1 and a laser locator 6, the vertical support column 2 is fixed to the bottom of the fixed box 1, the puller 4 is installed inside the fixed box 1, and the pulling chuck of the puller 4 passes through the side wall of the fixed box 1 and extends out of the fixed box 1. In this embodiment, the upper end of the vertical support column 2 of the mounting box is installed at the four corners of the bottom plate of the fixed box 1 by bolts, and the vertical support column 2 is a telescopic rod structure, such as a stainless steel positive and negative wire double-head lifting support frame, or a hydraulic telescopic rod structure or a cylinder telescopic rod structure, etc. The plate-shaped column foot 3 at the bottom end of the bracket can be fixed to the bottom surface by a steel bar 13 and a ground nail 18. The model of the vertical support column 2 is: ITAO737544906150 support.

[0030] An installation box is fixedly arranged inside the fixed box 1. The installation box is horizontally fixed at the center of the fixed box 1 and forms a U-shaped box structure with the fixed box 1. The puller 4 is fixed in the installation box, and the drawing axis of the puller 4 is coaxial with the horizontal axis of the installation box. In this embodiment, a mounting hole is respectively provided on the two opposite side panels of the fixed box 1, and both ends of the installation box are fixedly connected to the fixed box 1 at the mounting holes. Both ends of the installation box are open, and the mounting hole through which the drawing chuck of the puller 4 extends is the drawing port. The puller 4 is fixed in the installation box by bolts or metal glue, and a drawing port is provided on the fixed box 1, and the drawing chuck extends out of the installation box and the fixed box 1 from the drawing port.

[0031] A universal level bubble 9 is installed on the top of the fixed box 1, which can be used to judge the horizontal state of the fixed box 1 and the puller 4. The fixed box 1 is made of colorless and transparent organic glass material, and the fixed box 1 and the upper end of the vertical support column 2 are bonded by epoxy high-strength adhesive.

[0032] The laser locator 6 is installed on the side wall of the fixed box 1, and the laser emitting end of the laser locator 6 is located on the same side as the drawing end of the puller 4. The laser locator 6 is a cross-shaped laser locator 6, and the cross center of the laser locator 6 is the position of the drawing point of the puller 4. In this embodiment, a fixing port 17 is provided on the fixed box 1, and the shell of the laser locator 6 is fixed in the fixing port 17 by an adhesive (such as epoxy high-strength adhesive). In addition, a manual adjustment hole 5 is provided on the side panel to facilitate personnel to adjust the position of the laser locator 6. The fixing port 17 is located 3 cm away from the drawing port. After installation, the cross-shaped laser locator 6 can be adjusted through the manual adjustment hole 5 so that the cross center is the position of the drawing point of the puller 4. The model of the laser locator 6 is FU650AD100-PXG26.

[0033] The steel wire 8 includes an anchoring section 12, an isolation section 10 and a drawing section. The outer layer of the isolation section 10 of the steel wire 8 is a threaded telescopic rod. The threaded telescopic rod includes a first rod and a second rod. One end of the first rod is connected to the rubber end plug 11, and the other end is threadedly connected to the second rod. The other end of the second rod is embedded in the rubber plug 7. The steel wire 8 passes through the isolation end plug, the isolation section 10, and the rubber plug 7. The section near the mouth of the sleeve 14 is the drawing section. In this embodiment, the first rod and the second rod are both high-strength carbon fiber telescopic round tubes with an inner diameter of 6 to 8 mm. A rubber end plug 11 is embedded at one end. The rubber end plug 11 is pulled out and slid along the steel wire 8. The length of the isolation section 10 can be adjusted by adjusting the length of the threaded connection. After adjustment, the end plug needs to be pushed and embedded in the end of the telescopic round tube again. The end of the rubber end plug 11 close to the embedded section is in the shape of a pen tip, and the distal end is larger and can be embedded in the end of the telescopic round tube. The rubber end plug 11 and the rubber plug 7 are provided with holes adapted to the embedded steel wire 8 , the depth of the holes is ≥10 mm, the steel wire 8 is a smooth round high-strength stainless steel wire 8 with a diameter of 5 mm±0.1 mm, and the puller 4 is a HC-V10S micro puller 4 .

[0034] The implementation principle of the auxiliary device for quality detection of assembled sleeve grouting in the utility model is:

[0035] S1, according to the vertical distance between the slurry outlet of the sleeve 14 and the surface of the steel bar 13 in the sleeve 14 near the slurry outlet in the specific project, determine the isolation length of the embedded steel wire 8, make the surface of the steel wire 8 close to the surface of the steel bar 13 on the side of the slurry outlet, pull out the rubber end plug 11 and the rubber plug 7, slide along the surface of the steel wire 8, twist the two carbon fiber threaded tubes, adjust the overlapping length of the threads, make the telescopic end reach a predetermined length, slide the rubber end plug 11 and the rubber plug 7 to the end of the carbon fiber threaded tube and plug it into the port;

[0036] S2, the embedded steel wire 8 is placed in the slurry outlet of the sleeve 14, and a gap is left between the rubber plug 7 and the slurry outlet. When the slurry outlet is discharged, the rubber plug 7 is used to block the slurry outlet in time;

[0037] S3, after the sleeve 14 is grouted, on-site protection is carried out, the embedded steel wire 8 shall not be damaged, and natural curing is carried out for no less than 3 days;

[0038] S4, when the drawing test is performed for the first time, stand the white cardboard at the drawing port of the drawing instrument 4, mark the drawing port on the white cardboard, move the white cardboard parallel to a distance of 20cm to 30cm, turn on the laser locator 6, and adjust the laser locator 6 through the manual adjustment hole 5 so that the center of the cross coincides with the drawing port mark;

[0039] S5, place the fixing device 20cm to 30cm away from the measuring point, fix the plate-shaped column foot 3 to the ground through the ground nail 18, turn on the laser locator 6, adjust the height of the vertical support column 2, and observe the universal level bubble 9 to make the universal level bubble 9 level and the center of the laser cross align with the embedded steel wire 8;

[0040] S6, open the puller 4, make the puller 4 chuck clamp the drawing section of the embedded steel wire 8, then evenly apply the load and record the real-time load data; S7, after the steel wire is completely pulled out, record the limit drawing load value P and end the test.

[0041] S8: When the measured ultimate pull-out load value P at the measuring point meets the following conditions at the same time, it can be determined that the sleeve grouting at the measuring point is full:

[0042]

[0043] P ≥ 1.5

[0044] When the measured ultimate pull-out load value P at the measuring point meets one of the following conditions, it can be determined that the grouting of the sleeve corresponding to the measuring point is not full:

[0045]

[0046] P≤1.0

[0047] Among them, P1 / P2 / P3 are the three maximum values ​​(kN) of the ultimate pull-out loads of the same batch of measuring points, and P is the ultimate pull-out load value (kN) of the corresponding measuring point.

[0048] The utility model is an auxiliary device for the quality inspection of assembled sleeve grouting. Through the use of an instrument fixing device, the position of the puller 4 can be effectively controlled. The vertical support column 2 can realize the control of the height direction position, and the horizontal leveling can be realized through the universal level bubble 9 and the vertical support column 2; the centering of the pulling point and the steel wire 8 can be realized through the laser positioning instrument; during the test, the stability of the puller 4 can be ensured by the fixing box 1, avoiding artificial disturbance, and ensuring that the pulling point and the steel wire 8 are always aligned in the center. The outer layer of the isolation section 10 of the steel wire 8 adopts high-strength carbon fiber telescopic and rubber end plugs 11, which can adjust the length of the isolation section 10 according to the root distance engineering situation. The high-strength carbon fiber tube can keep the embedded steel wire 8 inserted into the grouting sleeve vertically and isolated from the grouting, and can also ensure the stability of the steel wire 8 during the pulling process. The utility model has a simple and clear structure, realizes the effective control of the position of the puller 4 and the isolation length of the steel wire 8, effectively reduces labor, and significantly improves the accuracy and efficiency of the test. Finally, the utility model has a simple and clear structure, realizes the effective control of the position of the puller 4 and the isolation length of the steel wire 8, effectively reduces the manpower, and significantly improves the accuracy and efficiency of the test.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to impose any limitation on the technical solution of the present invention. Those skilled in the art should understand that, without departing from the spirit and principles of the present invention, the technical solution can also be subjected to several simple modifications and replacements, and these modifications and replacements are also within the scope of protection covered by the claims.

Claims

1. An auxiliary device for detecting the quality of assembled sleeve grouting, characterized in that: The invention comprises an instrument fixing device and a steel wire (8), wherein the instrument fixing device comprises a vertical support column (2), a fixing box (1) and a laser locator (6), wherein the vertical support column (2) is fixed to the bottom of the fixing box (1), a pulling instrument (4) is installed inside the fixing box (1), and a pulling chuck of the pulling instrument (4) penetrates through the side wall of the fixing box (1) and extends out of the fixing box (1); the laser locator (6) is installed on the side wall of the fixing box (1), and a laser emitting end of the laser locator (6) and a pulling end of the pulling instrument (4) are located on the same side, the laser locator (6) is a cross-shaped laser locator (6), and the cross center of the laser locator (6) is the position of the pulling point of the pulling instrument (4); one end of the steel wire (8) is connected to the pulling chuck, and the other end is buried in a grouting sleeve (14).

2. The auxiliary device for detecting the quality of assembled sleeve grouting according to claim 1 is characterized in that: An installation box is fixedly arranged inside the fixed box (1). The installation box is horizontally fixed at the center of the fixed box (1) and forms a U-shaped box structure with the fixed box (1). The pulling device (4) is fixed in the installation box. The pulling axis of the pulling device (4) is coaxial with the horizontal axis of the installation box.

3. The auxiliary device for detecting the quality of assembled sleeve grouting according to claim 1 is characterized in that: The steel wire (8) is divided into an anchoring section (12), an isolation section (10) and a drawing section which are connected in sequence according to their positions. The anchoring section (12) and the isolation section (10) are both buried in a grouting sleeve (14). A threaded telescopic rod is sleeved on the outer side of the isolation section (10). A rubber end plug (11) is provided at one end of the threaded telescopic rod, and a rubber plug (7) is provided at the other end. Both the rubber end plug (11) and the rubber plug (7) slide on the isolation section (10). The rubber plug (7) is used to block the grouting outlet of the grouting sleeve (14). The end of the drawing section away from the isolation section (10) is connected to a drawing chuck.

4. The auxiliary device for detecting the quality of assembled sleeve grouting according to claim 3 is characterized in that: The threaded telescopic rod comprises a first rod and a second rod, one end of the first rod is connected to a rubber end plug (11), the other end of the first rod is threadedly connected to the second rod, and the other end of the second rod is connected to a rubber plug (7).

5. The auxiliary device for detecting the quality of assembled sleeve grouting according to claim 1 is characterized in that: A universal level bubble (9) is installed on the top of the fixed box (1).

6. The auxiliary device for detecting the quality of assembled sleeve grouting according to claim 1 is characterized in that: The fixed box (1) is made of colorless and transparent organic glass material.

7. The auxiliary device for detecting the quality of assembled sleeve grouting according to claim 1 is characterized in that: A fixing opening (17) is provided on the fixing box (1), and the outer shell of the laser locator (6) is fixed in the fixing opening (17) by means of an adhesive.

8. The auxiliary device for detecting the quality of assembled sleeve grouting according to claim 1 is characterized in that: A manual adjustment hole (5) is provided on a side plate of the fixed box (1) body close to the laser locator (6).

9. The auxiliary device for detecting the quality of assembled sleeve grouting according to claim 1 is characterized in that: The vertical support column (2) is a telescopic rod structure.

10. The auxiliary device for detecting the quality of assembled sleeve grouting according to claim 9, characterized in that: A plate-shaped column foot (3) is arranged at the bottom of the vertical support column (2).

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