CN220154169U - Detection equipment for shearing capacity of rear anchoring anchor bolt - Google Patents

Abstract

The utility model discloses a detection device for the shear capacity of a rear anchor bolt, which is characterized by comprising a first supporting plate, a second supporting plate, a fixed plate, an anchor plate, two tension rods, a jack, a force sensor and a displacement sensor, wherein the anchor plate is fixedly connected with the rear anchor bolt to be detected; has the advantages of simple structure, convenient installation and flexible use.

Description

Detection equipment for shearing capacity of rear anchoring anchor bolt

Technical Field

The utility model relates to performance detection equipment for an anchoring device, in particular to detection equipment for the shearing capacity of a rear anchoring anchor bolt.

Background

Since the last century, with the rapid development of economy, urban construction has been expanding as well, various basic constructions and building layers are endless, and in recent years, due to aging of the buildings, reinforcement and maintenance of the structure are required, such as: the old building is transformed, the bridge is reinforced and the like, and the post-anchoring technology is widely applied; the post-anchoring technology is a common concrete structure reinforcing method, has the advantages of good structural performance, flexible arrangement and short construction time, has been widely applied to various engineering fields, and adopts the principle that the damaged part of the concrete structure is drilled, the reinforcing steel bar is planted into the hole, and the special grouting material is used for fixing.

However, the current guidance specifications for the design and calculation of the post-anchor bolts are too conservative and too late in comparison with the actual engineering application, and meanwhile, the corresponding detection equipment and judgment standards are lacking; the detection of the shearing capacity of the anchor bolt is often carried out in laboratories of various universities or companies, and no shearing capacity detection device which can be flexibly used in actual engineering is available.

Disclosure of Invention

The utility model aims to solve the technical problem of providing the rear anchor bolt shear capacity detection equipment which is simple in structure, convenient to install and flexible to use.

The technical scheme adopted for solving the technical problems is as follows: the utility model provides a detection equipment of back anchor crab-bolt shear capacity, includes first backup pad, second backup pad, fixed plate, anchor slab, two tension rods, at least one jack, force sensor and displacement sensor, anchor slab and the back anchor crab-bolt fixed connection that awaits measuring and lean on the concrete substrate surface that back anchor crab-bolt is located, the both sides inside of anchor slab along fore-and-aft direction parallel arrangement have tension holes, two tension rods correspond respectively and pass one the Zhang Lakong, the rear end of tension rods stretch out backward the anchor slab and locate through the chucking nut the rear end of anchor slab, the fixed plate fixed set up with the anchor slab vertically the front side surface of concrete substrate, the front end of anchor slab forward pass in proper order the fixed plate first backup pad and the second backup pad and with second backup pad fixed connection, the rear end of jack set up in the fixed plate on the fixed plate the jack the output of anchor slab the centre line that the centre line is located in between the jack the centre line that the centre line is located in the jack is located the centre line that the centre line is used to the jack.

The anchor plate is provided with a universal hole, the rear anchor bolt penetrates through the universal hole, and a filling sleeve is tightly sleeved between the rear anchor bolt and the wall of the universal hole. Only one anchor plate can be arranged on the rear anchor bolts with different sizes, and the close-fitting positioning between the anchor plate and the rear anchor bolts can be completed by selecting the filling sleeve with corresponding sizes, so that the anchor plate is very convenient and the materials are saved.

The fixing plate is fixedly connected with the concrete base material through a fixing planting bar which penetrates through the fixing hole and is provided with a fixing nut, the two tension rods penetrate through the corresponding limiting hole respectively, and the rear end of the jack is fixedly arranged in the mounting hole. The quick installation and connection of the fixing plate and the subsequent structure are convenient.

The first backup pad on set up two through-holes, first draw-in hole and at least one top and connect the counter bore, the second backup pad on set up two connecting holes and second draw-in hole, two stretch-draw bars pass respectively corresponding one the through-hole with one the connecting hole, the front end top of the output pole of jack connect in top connect the counter bore in, the rear end fixed clip of force sensor locate in the first draw-in hole, the front end fixed clip of force sensor locate in the second draw-in hole. The jack and the force sensor are clamped with the corresponding holes, so that sliding is prevented during use, special structure fixation is not needed, and the installation is rapid and convenient.

The two jacks are arranged on the fixing plate, two jacking counter bores are formed in the first supporting plate, the rear end of each jack is fixedly arranged in the corresponding one of the mounting holes, and the front end of the output rod of each jack is jacked into the corresponding one of the jacking counter bores. More convenient and uniform pulling force application.

Compared with the prior art, the utility model has the advantages that the anchor plate, the fixed plate, the first support plate and the second support plate are sequentially connected through the two long pull rods, so that the installation of the whole detection device can be rapidly completed, the rear anchor bolt to be detected is detected, the structure is simple, the installation is rapid and convenient, and the device can be flexibly installed in actual engineering; the detection device tests the rear anchor bolts with different sizes in a test stage, a force-displacement curve of the rear anchor bolts can be obtained in real time in the test process, and when the load bearing capacity limit is reached through curve trend judgment, so that the design value is corrected, and the engineering safety is ensured; when long-term holding observation is needed, two nuts are arranged between the fixed plate and the first support plate, and when the jack is tensioned to the required force, the nuts are screwed and taken out of the jack.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic view of the structure of an anchor plate according to the present utility model;

FIG. 3 is a schematic structural view of a fixing plate according to the present utility model;

FIG. 4 is a schematic view showing a front side structure of a first support plate according to the present utility model;

FIG. 5 is a schematic view showing a rear structure of the first support plate according to the present utility model;

fig. 6 is a schematic view of a rear structure of the second support plate according to the present utility model.

Description of the embodiments

The utility model is described in further detail below with reference to the embodiments of the drawings.

Embodiment one: the utility model provides a detection equipment of back anchor crab-bolt shear capacity, including first backup pad 1, second backup pad 2, fixed plate 3, anchor slab 4, two tension rods 5, a jack 6, force sensor 71 and displacement sensor 72, anchor slab 4 and the back anchor crab-bolt 8 fixed connection of awaiting measuring and lean on the concrete substrate 9 surface that back anchor crab-bolt 8 is located, the both sides inside of anchor slab 4 is along fore-and-aft direction parallel arrangement to be had and stretch out draw-out hole 41, two tension rods 5 correspond respectively and pass a stretch out draw-out hole 41, stretch out the rear end of anchor slab 5 backward and block the rear end of locating anchor slab 4 through the chucking nut (not shown) in the drawing, fixed plate 3 fixed set up the front side surface of concrete substrate 9 perpendicular to anchor slab 4, the front end of tension rod 5 passes fixed plate 3 forward in proper order, first backup pad 1 and second backup pad 2 and with second backup pad 2 fixed connection, the rear end of the jack 6 is fixedly arranged on the fixed plate 3, the front end of an output rod of the jack 6 is propped against the first supporting plate 1, the acting force center line of the jack 6 is overlapped with the center lines of the two tension rods 5, the rear anchoring anchor bolt 8 is positioned on the center line, the force sensor 71 is fixedly clamped between the first supporting plate 1 and the second supporting plate 2, the displacement sensor 72 is used for detecting the displacement of the anchor plate 4, the anchor plate 4 is provided with a universal hole 42, the rear anchoring anchor bolt 8 passes through the universal hole 42, a filling sleeve 81 is tightly matched between the rear anchoring anchor bolt 8 and the wall of the universal hole 42, the fixed plate 3 is provided with a fixed hole 31, a mounting hole 32 and two limiting holes 33, the fixed plate 3 is fixedly connected with the concrete substrate 9 through a fixed planting bar 34 which passes through the fixed hole 31 and is provided with a fixed nut (not shown in the figure), the two tension rods 5 respectively penetrate through the corresponding limiting holes 33, the rear ends of the jacks 6 are fixedly arranged in the mounting holes 32, the first support plate 1 is provided with two through holes 11, a first clamping hole 12 and a jacking counter bore 13, the second support plate 2 is provided with two connecting holes 21 and a second clamping hole 22, the two tension rods 5 respectively penetrate through the corresponding through holes 11 and the corresponding connecting hole 21, the front ends of the output rods of the jacks 6 are jacked in the jacking counter bores 13, the rear ends of the force sensors 71 are fixedly clamped in the first clamping holes 12, and the front ends of the force sensors 71 are fixedly clamped in the second clamping holes 22.

Embodiment two: the other parts are the same as the first embodiment, and the difference is that the number of the jacks 6 is two, the fixing plate 3 is provided with two mounting holes 32 and two fixing holes 31, the first support plate 1 is provided with two jacking counter bores 13, the rear end of the jack 6 is fixedly arranged in the corresponding one of the mounting holes 32, and the front end of an output rod of the jack 6 is jacked in the corresponding one of the jacking counter bores 13.

In the practical detection of the embodiment, firstly, the post-anchoring anchor bolts 8 are arranged in the corresponding concrete base materials 9 according to the edge distance condition, the depth of the planted bars and the diameter of the post-anchoring anchor bolts in practical use, a fixed planted bar 34 is planted in a proper position on the side surface of the concrete base materials 9, after the planted bar is gelled and fixed, the filling sleeve 81 with corresponding size is sleeved into the post-anchoring anchor bolts 8, the anchor plate 4 is arranged in and wraps the filling sleeve 81 and the post-anchoring anchor bolts 8, the fixed holes 31 on the fixed plate 3 penetrate through the fixed planted bar 34 and are screwed and fixed by the fixed nuts, and the level of the fixed plate 3 is ensured not to shake; the tension rod 5 passes through the anchor plate 4 to be connected with the fixed plate 3, the first support plate 1 and the second support plate 2, and the jack 6 and the force sensor 71 are respectively put in preset positions and are clung to the corresponding hole walls to prevent sliding; finally, fixing the displacement sensors 72 on two sides of the concrete base material 9, and enabling the detection needles to contact with the reserved positions of the anchor plates 4; the force sensor 71 and the displacement sensor 72 are connected to the strain box, so that the pressure data and the displacement data can be read from the computer in real time, and the detection process is finished until the rear anchor bolt 8 is broken; the jack 6 can be used for exerting small force at the beginning of the test, so that the gap generated by the assembly of the structure is eliminated, and the jack 6 is released for formal tensioning after the gap is eliminated.

Claims (5)

1. The utility model provides a detection equipment of back anchor crab-bolt shear capacity, its characterized in that includes first backup pad, second backup pad, fixed plate, anchor slab, two tension rods, at least one jack, force sensor and displacement sensor, anchor slab and the back anchor crab-bolt fixed connection that awaits measuring and paste in the concrete substrate surface that back anchor crab-bolt is located, the both sides inside of anchor slab along fore-and-aft direction parallel arrangement have tension holes, two tension rods correspond respectively and pass one the Zhang Lakong, the rear end of tension rod stretch out backward the anchor slab and locate through the chucking nut the rear end of anchor slab, the fixed plate fixed set up with anchor slab vertically the front side surface of concrete substrate, the front end of tension rod pass forward in proper order the fixed plate first backup pad and second backup pad and with second backup pad fixed connection, the rear end of jack set up in the fixed plate of jack in the first backup pad the jack the output of the jack and the centre line of the jack is located in between the centre line of displacement sensor is located to the jack.

2. The device for detecting the shearing capacity of a rear anchor bolt according to claim 1, wherein the anchor plate is provided with a universal hole, the rear anchor bolt penetrates through the universal hole, and a filling sleeve is tightly sleeved between the rear anchor bolt and the wall of the universal hole.

3. The device for detecting the shear capacity of a rear anchor bolt according to claim 1, wherein the fixing plate is provided with at least one fixing hole, at least one mounting hole and two limiting holes, the fixing plate is fixedly connected with the concrete base material through a fixing planting bar which penetrates through the fixing hole and is provided with a fixing nut, the two tension rods respectively penetrate through one corresponding limiting hole, and the rear end of the jack is fixedly arranged in the mounting hole.

4. The device for detecting the shear capacity of a rear anchor bolt according to claim 3, wherein the first support plate is provided with two through holes, a first clamping hole and at least one jacking counter bore, the second support plate is provided with two connecting holes and a second clamping hole, the two tension rods respectively penetrate through the corresponding through hole and the corresponding connecting hole, the front end of the output rod of the jack is jacked into the jacking counter bore, the rear end of the force sensor is fixedly clamped in the first clamping hole, and the front end of the force sensor is fixedly clamped in the second clamping hole.

5. The device for detecting the shearing capacity of a rear anchor bolt according to claim 4, wherein the number of the jacks is two, the two mounting holes are formed in the fixing plate, the two jacking counter bores are formed in the first supporting plate, the rear end of the jack is fixedly mounted in one corresponding mounting hole, and the front end of the output rod of the jack is jacked in one corresponding jacking counter bore.