CN113624678A - On-site testing device and method for tangential bonding strength of steel structure fireproof coating - Google Patents
On-site testing device and method for tangential bonding strength of steel structure fireproof coating Download PDFInfo
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- CN113624678A CN113624678A CN202110858945.7A CN202110858945A CN113624678A CN 113624678 A CN113624678 A CN 113624678A CN 202110858945 A CN202110858945 A CN 202110858945A CN 113624678 A CN113624678 A CN 113624678A
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- hoop
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/04—Measuring adhesive force between materials, e.g. of sealing tape, of coating
Abstract
The invention discloses a field test device and a method for tangential bonding strength of a steel structure fireproof coating, wherein a hoop is selectively detachably connected with a longitudinal connecting piece and a transverse connecting piece, a hydraulic pump device is arranged in the hoop, the force application direction of the hydraulic pump device is in the vertical direction when the hoop is connected with the longitudinal connecting piece, and the force application direction of the hydraulic pump device is in the horizontal direction when the hoop is connected with the transverse connecting piece; the clamp is fixedly connected on the hydraulic pump device and is provided with a clamping position; the clamping end of the auxiliary steel plate is detachably fixed at the clamping position, and the testing end is coated with epoxy resin glue and bonded on the steel structure fireproof coating; the hydraulic pump device applies pulling force to the clamp, the direction of the pulling force applied by the hydraulic pump device is parallel to the connecting surface of the test end and the fireproof coating, and the clamp drives the auxiliary steel plate to move together so as to measure the tangential bonding strength of the fireproof coating. The testing device can be applied to field measurement, and has the advantages of simple structure and convenient operation.
Description
Technical Field
The invention relates to a field test device and a field test method for tangential bonding strength of a steel structure fireproof coating.
Background
When designing steel structures for fire resistance with a fire-retardant coating, it is generally assumed that the performance properties of the fire-retardant coating are not affected by aging and the surrounding environmental conditions. The fire-retardant system and the matrix resin of the intumescent steel structure fire-retardant coating contain machine components, and the fact proves that the working performance of the intumescent steel structure fire-retardant coating can be degraded after the intumescent steel structure fire-retardant coating is put into use. The reliability problem of steel structure buildings protected by intumescent fire-retardant coatings within the design service life has attracted extensive attention from fire-fighting administrative departments, engineering design units, paint manufacturers, and the like.
The performance properties include thermal insulation properties and adhesion properties. The change of the interface bonding property of the intumescent steel structure fireproof coating and the steel base material can change the damage mode of the intumescent layer under fire, and further lead to the change of the temperature rise process and the fire resistance time of the steel member. In addition, due to the degradation of the heat insulation performance, the service life of the intumescent fire-retardant coating is shorter than the design service life of a steel structure building, the intumescent steel structure fire-retardant coating reaching the service life faces the problems of coating supplement and replacement, and the selection of the coating supplement and replacement scheme depends on the bonding performance of the interface of the coating and the steel substrate. Therefore, it is necessary to examine the bonding performance of the interface between the fireproof coating of the expanded steel structure and the substrate, which has been put into use, so as to determine the residual bonding strength of the interface.
The method for measuring the interfacial tangential bonding strength adopted in the prior engineering can only be realized in a laboratory by means of a universal testing machine, and the set of measuring equipment and the method can not be used in the field. Therefore, a device and a method capable of measuring the tangential bonding strength of the interface of the intumescent steel structure fireproof coating and the steel substrate on site are needed to be designed, so that the characteristics of simple test equipment, rapid site construction, reliable measurement result and the like are achieved.
Disclosure of Invention
The invention provides a field test device and a field test method for tangential bonding strength of a steel structure fireproof coating, which overcome the defects in the prior art. One of the technical schemes adopted by the invention for solving the technical problems is as follows:
the utility model provides a steel construction fire protection coating tangential bonding strength's on-spot testing arrangement, it includes:
a telescopic bracket provided with a longitudinal connecting piece and a transverse connecting piece;
the hoop is selectively detachably connected with the longitudinal connecting piece and the transverse connecting piece, a hydraulic pump device is arranged in the hoop, the force application direction of the hydraulic pump device is in the vertical direction when the hoop is connected with the longitudinal connecting piece, and the force application direction of the hydraulic pump device is in the horizontal direction when the hoop is connected with the transverse connecting piece;
the clamp is fixedly connected to the hydraulic pump device and is provided with a clamping position;
the auxiliary steel plate is provided with a clamping end and a testing end, the clamping end is detachably fixed at the clamping position, and the testing end is coated with epoxy resin glue and is bonded on the steel structure fireproof coating;
the hydraulic pump device applies pulling force to the clamp, the direction of the pulling force applied by the hydraulic pump device is parallel to the connecting surface of the test end and the fireproof coating, and the clamp drives the auxiliary steel plate to move together so as to measure the tangential bonding strength of the fireproof coating.
In a preferred embodiment: the longitudinal connecting piece is a longitudinal lug, the longitudinal lug is provided with a longitudinal lug through hole, the hoop comprises a first hoop, a second hoop, a first bolt and a second bolt, the first hoop and the second hoop are oppositely arranged, a sleeving space is defined by the first hoop and the second hoop, one end of the first hoop, the longitudinal lug and one end of the second hoop are locked together by the first bolt, the other end of the first hoop and the other end of the second hoop are locked together by the second bolt, and the hydraulic pump device is fixed in the sleeving space.
In a preferred embodiment: the transverse connecting piece is a transverse lug, the transverse lug is provided with a transverse lug hole, the hoop comprises a first hoop, a second hoop, a first bolt and a second bolt, the first hoop and the second hoop are oppositely arranged, a sleeving space is defined by the first hoop and the second hoop, one end of the first hoop, the transverse lug and one end of the second hoop are locked together by the first bolt, the other end of the first hoop and the other end of the second hoop are locked together by the second bolt, and the hydraulic pump device is fixed in the sleeving space.
In a preferred embodiment: the anchor clamps include anchor clamps body and anchor clamps bolt, the anchor clamps body is equipped with top open-ended clamp groove, should press from both sides the groove and do the centre gripping position, the cell wall that presss from both sides the groove both sides all is equipped with and presss from both sides the groove and perforates, the exposed core of supplementary steel sheet is equipped with and to press from both sides the corresponding exposed core of groove perforation and perforate, the anchor clamps bolt includes anchor clamps screw rod and anchor clamps nut, the anchor clamps screw rod passes to press from both sides the groove and perforate and to fix supplementary steel sheet and anchor clamps body with anchor clamps nut looks spiro union after the exposed core, the test end stretches out and presss from both sides the groove.
In a preferred embodiment: the longitudinal section of the clamping groove is square, and the auxiliary steel plate is in a straight strip shape and is positioned in the center of the clamping groove.
In a preferred embodiment: the top end of the hydraulic pump device is connected with the bottom end face of the clamp body through a connecting block.
In a preferred embodiment: the connecting block is in a round table shape, wherein the end with the larger area is welded with the bottom end face of the clamp body through resistance welding, and the end with the smaller area is welded with the top end of the hydraulic pump device through resistance welding.
In a preferred embodiment: the support comprises a triangular underframe, a fixed loop bar and a telescopic bar, wherein the fixed loop bar is fixedly connected to the triangular underframe, the telescopic bar is movably sleeved in the fixed loop bar and can adjust the height of the fixed loop bar, and the longitudinal connecting piece and the transverse connecting piece are fixedly connected to the periphery of the telescopic bar.
The second technical scheme adopted by the invention for solving the technical problems is as follows:
a field test method for tangential bonding strength of a steel structure fireproof coating, which applies a field test device for tangential bonding strength of the steel structure fireproof coating, comprises the following steps:
when the steel structure is a beam member:
and 50, starting a hydraulic pump device, applying downward tension to the clamp, driving the auxiliary steel plate to move downwards by the clamp so as to apply tangential force to the fireproof coating until the fireproof coating is separated from the beam member, recording the applied tension, and converting the applied tension into the tangential bonding strength of the fireproof coating.
The third technical scheme adopted by the invention for solving the technical problems is as follows:
a field test method for tangential bonding strength of a steel structure fireproof coating, which applies a field test device for tangential bonding strength of the steel structure fireproof coating, comprises the following steps:
when the steel structure is a column component:
and 50, starting a hydraulic pump device, applying horizontal pulling force to the clamp, driving the auxiliary steel plate to horizontally move by the clamp so as to apply tangential force to the fireproof coating until the fireproof coating is separated from the column member, recording the applied pulling force, and converting the tangential force into the tangential bonding strength of the fireproof coating.
Compared with the background technology, the technical scheme has the following advantages:
1. this testing arrangement can be applied to the field survey, only needs to bond supplementary steel sheet on-the-spot steel construction fire prevention coating to drop through supplementary steel sheet of tangential pulling, alright measure fire prevention coating's adhesion properties, solved among the prior art can't carry out the problem measured at the on-the-spot tangential bonding strength to steel construction fire prevention coating. And the device has simple structure and convenient operation, and the measured result of the tangential bonding performance is more accurate and objective. Meanwhile, the degradation rule of the tangential adhesive property of the aged fireproof coating under different aging years can be obtained, and a reference with more practical significance is provided for the repair research of the gradually-rising composite coating.
2. The first bolt locks one end of the first hoop, the longitudinal lug or the transverse lug and one end of the second hoop together, so that the detachable connection between the hoop and the longitudinal lug or the transverse lug can be realized; the other end of the first hoop and the other end of the second hoop are locked together by the second bolt, and the size of the sleeving space can be adjusted in time according to the size of the hydraulic pump device so as to adapt to the size of the hydraulic pump device.
3. The anchor clamps screw rod passes and presss from both sides the groove and perforates and the centre gripping end is perforated the back and anchor clamps nut looks spiro union in order to fix supplementary steel sheet and anchor clamps body for can realize quick dismantlement between supplementary steel sheet and the anchor clamps and be connected.
Drawings
The invention is further illustrated by the following figures and examples.
FIG. 1 is a schematic overall view of a preferred embodiment of an on-site testing apparatus for tangential bonding strength of a steel-structure fireproof coating, in which a ferrule is connected to a longitudinal tab.
FIG. 2 is a schematic diagram showing the overall structure of a preferred embodiment of the on-site testing apparatus for the tangential bonding strength of the fireproof coating of steel structure, in which the ferrule is connected to the lateral tab.
FIG. 3 is a side view of a preferred embodiment of the clamp.
Fig. 4 is a schematic front view of fig. 3.
Fig. 5 is a schematic structural view illustrating an auxiliary steel plate.
Fig. 6 is a schematic view showing the connection of the jig to the connection block.
Fig. 7 shows a schematic view of the connection of the ferrule to the hydraulic pump device.
FIG. 8 depicts a schematic top view of a ferrule.
Detailed Description
In the claims, the specification and the drawings of the present invention, unless otherwise expressly limited, the terms "first", "second" or "third", etc. are used for distinguishing between different items and not for describing a particular sequence.
In the claims, the specification and the drawings of the present invention, unless otherwise expressly limited, all directional or positional relationships indicated by the terms "center," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "inner," "outer," "upper," "lower," "front," "rear," "left," "right," "clockwise," "counterclockwise," and the like are based on the directional or positional relationships indicated in the drawings and are used for convenience in describing the present invention and for simplicity in description, but do not indicate or imply that the device or element so indicated must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be construed as limiting the scope of the present invention.
In the claims, the description and the drawings of the present application, unless otherwise expressly limited, the terms "fixedly connected" and "fixedly connected" should be interpreted broadly, that is, any connection between the two that is not in a relative rotational or translational relationship, that is, non-detachably fixed, integrally connected, and fixedly connected by other devices or elements.
In the claims, the specification and the drawings of the present invention, the terms "including", "having", and variations thereof, are intended to be inclusive and not limiting.
Referring to fig. 1 to 8, a preferred embodiment of an on-site testing apparatus for tangential bonding strength of a steel structure fire-retardant coating comprises a telescopic bracket 10, a hoop 20, a clamp 30 and an auxiliary steel plate 40.
The telescopic support 10 is provided with longitudinal and transverse connectors.
In this embodiment, the support 10 includes triangle chassis 11, fixed loop bar 12 and telescopic link 13, fixed loop bar 12 rigid coupling is on triangle chassis 11, telescopic link 13 activity cup joints in fixed loop bar 12 and can adjust its height, vertical connecting piece and transverse connection spare rigid coupling are in telescopic link 13 periphery. As shown in fig. 1, a fastening ring 14 is disposed between the fixed sleeve rod 12 and the telescopic rod 13, and when the telescopic rod 13 moves to a proper position, the telescopic rod 13 can be limited and fixed by the fastening ring 14.
In this embodiment, the longitudinal connecting member is a longitudinal ear 15, and the longitudinal ear 15 is provided with a longitudinal ear through hole 151. As shown in fig. 2, two longitudinal ear pieces 15 are provided and are arranged at intervals up and down. One, three or four longitudinal ear panels 15 may be provided as required, but not limited thereto.
In this embodiment, the transverse connector is a transverse tab 16, and the transverse tab 16 is provided with a transverse tab through hole 161. As shown in fig. 1, the lateral ear panels 16 are provided in two and spaced left and right arrangements. The lateral ear panels 16 may be provided with one, three or four different lateral ears as required, but not limited thereto.
The hoop 20 can be selectively detachably connected with the longitudinal connecting piece and the transverse connecting piece, a hydraulic pump device 21 is arranged in the hoop 20, the force application direction of the hydraulic pump device 21 is vertical when the hoop 20 is connected with the longitudinal connecting piece, and the force application direction of the hydraulic pump device 21 is horizontal when the hoop 20 is connected with the transverse connecting piece. The hydraulic pump device 21 is a conventional hydraulic pump structure, and is not described in detail.
In this embodiment, the ferrule 20 includes a first hoop 22, a second hoop 23, a first bolt 24 and a second bolt 25, the first hoop 22 and the second hoop 23 are arranged oppositely and form a nesting space 26 therebetween, when the ferrule 20 is matched with the longitudinal lug 15, the first bolt 24 locks one end of the first hoop 22, the longitudinal lug 15 and one end of the second hoop 23 together, the second bolt 25 locks the other end of the first hoop 22 and the other end of the second hoop 23 together, and the hydraulic pump device 21 is fixed in the nesting space 26; the first bolt 24 locks together the first hoop 22 end, the cross tab 16, and the second hoop 23 end when the ferrule 20 is mated with the cross tab 16. That is, the ferrule 20 is detachably connected to the longitudinal tab 15 and the transverse tab 16 by the first bolt 24, and the size of the housing space 26 is adjusted by the second bolt 25 to fit the size of the hydraulic pump device 21.
As shown in fig. 8, each of the first hoop 22 and the second hoop 23 includes two side strips and a semi-circular arc located between the two side strips, the side strip below the first hoop 22 and the second hoop 23 is matched with the longitudinal lug 15 or the transverse lug 16, and the side strip above the first hoop 22 and the second hoop 23 is locked by the second bolt 25.
The clamp 30 is fixed to the hydraulic pump unit 21 and has a clamping position.
In this embodiment, the fixture 30 includes a fixture body 31 and a fixture bolt 32, the fixture body 31 is provided with a clamping groove 33 with an open top end, the clamping groove 33 is the clamping position, and the groove walls on both sides of the clamping groove 33 are provided with clamping groove through holes 34.
In this embodiment, the longitudinal section of the clamping groove 33 is square.
In this embodiment, the clamp body 31 may be made of a common low-carbon or low-alloy steel material, and has a thickness of 2 mm, a width of 25mm, a length of 86 mm, a width of the clamping groove 33 of 2 mm, and a diameter of the clamping groove through hole 34 of 17 mm.
The auxiliary steel plate 40 is provided with a clamping end 41 and a testing end 42, the clamping end 41 is detachably fixed at a clamping position, and the testing end 42 is coated with epoxy resin glue and bonded on the steel structure fireproof coating; the hydraulic pump device 21 applies a pulling force to the fixture 30, the direction of the pulling force applied by the hydraulic pump device 21 is parallel to the connection surface of the test end 42 and the fireproof coating, and the fixture 30 drives the auxiliary steel plate 40 to move together so as to measure the tangential bonding strength of the fireproof coating.
In this embodiment, the clamping end 41 of the auxiliary steel plate 40 is provided with a clamping end through hole 43 corresponding to the clamping groove through hole 34, the clamp bolt 32 includes a clamp screw and a clamp nut, and the clamp screw passes through the clamping groove through hole 34 and the clamping end through hole 43 and then is screwed with the clamp nut to fix the auxiliary steel plate 40 and the clamp body 31, so that the auxiliary steel plate and the clamp can be quickly detachably connected. And, the test end 42 extends out of the clip slot 33.
In this embodiment, the auxiliary steel plate 40 is a straight strip and is located at the center of the clamping groove.
In this embodiment, the auxiliary steel plate 40 is made of a common low-carbon steel or a low-alloy steel, and has a size of 100mm × 25mm × 1.6 mm. The length of the clamping end 41 is 40 mm, the diameter of the clamping end through hole 43 is 17 mm, and the length of the testing end is 12 mm.
In this embodiment, the top end of the hydraulic pump device 21 is connected to the bottom end surface of the clamp body 31 through a connecting block 50.
In this embodiment, as shown in fig. 6 and 7, the connecting block 50 is in a truncated cone shape, in which the end with the larger area is welded to the bottom end surface of the clamp body 31 by resistance welding, and the end with the smaller area is welded to the top end of the hydraulic pump unit 21 by resistance welding.
The test method of the test device comprises the following steps:
when the steel structure is a beam member:
and 50, starting the hydraulic pump device 21, applying downward pulling force to the clamp 30, driving the auxiliary steel plate 40 to move downwards by the clamp 30 so as to apply tangential force to the fireproof coating until the fireproof coating is separated from the beam member, recording the applied pulling force, and converting the tangential force into the tangential bonding strength of the fireproof coating.
When the steel structure is a column component:
and 50, starting the hydraulic pump device 21, applying horizontal pulling force to the clamp 30, driving the auxiliary steel plate 40 to move horizontally by the clamp 30 so as to apply tangential force to the fireproof coating until the fireproof coating is separated from the column member, recording the applied pulling force, and converting the tangential force into the tangential bonding strength of the fireproof coating.
This testing arrangement can be applied to the field survey, only needs to assist the steel sheet 40 to bond on-the-spot steel construction fire prevention coating to drop through supplementary steel sheet of tangential pulling until supplementary steel sheet 40, alright measure fire prevention coating's adhesion properties, solved among the prior art can't carry out the problem measured at the on-the-spot tangential bonding strength to steel construction fire prevention coating. And the device has simple structure and convenient operation, and the measured result of the tangential bonding performance is more accurate and objective. Meanwhile, the degradation rule of the tangential adhesive property of the aged fireproof coating under different aging years can be obtained, and a reference with more practical significance is provided for the repair research of the gradually-rising composite coating.
The above description is only a preferred embodiment of the present invention, and therefore should not be taken as limiting the scope of the invention, which is defined by the appended claims and their equivalents.
Claims (10)
1. The utility model provides a steel construction fire protection coating tangential bonding strength's on-spot testing arrangement which characterized in that: it includes:
a telescopic bracket provided with a longitudinal connecting piece and a transverse connecting piece;
the hoop is selectively detachably connected with the longitudinal connecting piece and the transverse connecting piece, a hydraulic pump device is arranged in the hoop, the force application direction of the hydraulic pump device is in the vertical direction when the hoop is connected with the longitudinal connecting piece, and the force application direction of the hydraulic pump device is in the horizontal direction when the hoop is connected with the transverse connecting piece;
the clamp is fixedly connected to the hydraulic pump device and is provided with a clamping position;
the auxiliary steel plate is provided with a clamping end and a testing end, the clamping end is detachably fixed at the clamping position, and the testing end is coated with epoxy resin glue and is bonded on the steel structure fireproof coating;
the hydraulic pump device applies pulling force to the clamp, the direction of the pulling force applied by the hydraulic pump device is parallel to the connecting surface of the test end and the fireproof coating, and the clamp drives the auxiliary steel plate to move together so as to measure the tangential bonding strength of the fireproof coating.
2. The on-site testing device for the tangential bonding strength of the steel structure fireproof coating, according to claim 1, is characterized in that: the longitudinal connecting piece is a longitudinal lug, the longitudinal lug is provided with a longitudinal lug through hole, the hoop comprises a first hoop, a second hoop, a first bolt and a second bolt, the first hoop and the second hoop are oppositely arranged, a sleeving space is defined by the first hoop and the second hoop, one end of the first hoop, the longitudinal lug and one end of the second hoop are locked together by the first bolt, the other end of the first hoop and the other end of the second hoop are locked together by the second bolt, and the hydraulic pump device is fixed in the sleeving space.
3. The on-site testing device for the tangential bonding strength of the steel structure fireproof coating, according to claim 1, is characterized in that: the transverse connecting piece is a transverse lug, the transverse lug is provided with a transverse lug hole, the hoop comprises a first hoop, a second hoop, a first bolt and a second bolt, the first hoop and the second hoop are oppositely arranged, a sleeving space is defined by the first hoop and the second hoop, one end of the first hoop, the transverse lug and one end of the second hoop are locked together by the first bolt, the other end of the first hoop and the other end of the second hoop are locked together by the second bolt, and the hydraulic pump device is fixed in the sleeving space.
4. The on-site testing device for the tangential bonding strength of the steel structure fireproof coating, according to claim 1, is characterized in that: the anchor clamps include anchor clamps body and anchor clamps bolt, the anchor clamps body is equipped with top open-ended clamp groove, should press from both sides the groove and do the centre gripping position, the cell wall that presss from both sides the groove both sides all is equipped with and presss from both sides the groove and perforates, the exposed core of supplementary steel sheet is equipped with and to press from both sides the corresponding exposed core of groove perforation and perforate, the anchor clamps bolt includes anchor clamps screw rod and anchor clamps nut, the anchor clamps screw rod passes to press from both sides the groove and perforate and to fix supplementary steel sheet and anchor clamps body with anchor clamps nut looks spiro union after the exposed core, the test end stretches out and presss from both sides the groove.
5. The on-site testing device for the tangential bonding strength of the steel structure fireproof coating, according to claim 4, is characterized in that: the longitudinal section of the clamping groove is square, and the auxiliary steel plate is in a straight strip shape and is positioned in the center of the clamping groove.
6. The on-site testing device for the tangential bonding strength of the steel structure fireproof coating, according to claim 4, is characterized in that: the top end of the hydraulic pump device is connected with the bottom end face of the clamp body through a connecting block.
7. The on-site testing device for the tangential bonding strength of the steel structure fireproof coating, according to claim 6, is characterized in that: the connecting block is in a round table shape, wherein the end with the larger area is welded with the bottom end face of the clamp body through resistance welding, and the end with the smaller area is welded with the top end of the hydraulic pump device through resistance welding.
8. The on-site testing device for the tangential bonding strength of the steel structure fireproof coating, according to claim 1, is characterized in that: the support comprises a triangular underframe, a fixed loop bar and a telescopic bar, wherein the fixed loop bar is fixedly connected to the triangular underframe, the telescopic bar is movably sleeved in the fixed loop bar and can adjust the height of the fixed loop bar, and the longitudinal connecting piece and the transverse connecting piece are fixedly connected to the periphery of the telescopic bar.
9. A field test method for tangential bonding strength of a steel structure fireproof coating, which applies the field test device for the tangential bonding strength of the steel structure fireproof coating, according to any one of claims 1 to 8, and is characterized in that: the method comprises the following steps:
when the steel structure is a beam member:
step 10, firstly coating an epoxy resin adhesive on a testing end of an auxiliary steel plate by a measurer, then adhering the epoxy resin adhesive to a fireproof coating of a beam component to be measured, fixing the auxiliary steel plate through an adhesive tape, and waiting for the epoxy resin adhesive to be cured, wherein the auxiliary steel plate is arranged in a vertical direction and a clamping end extends out of the beam component;
step 20, connecting the hoop with a longitudinal connecting piece;
step 30, adjusting the height of the support until the clamp can be connected with the clamping end of the auxiliary steel plate;
step 40, connecting and fixing the clamp and the clamping end of the auxiliary steel plate;
and 50, starting a hydraulic pump device, applying downward tension to the clamp, driving the auxiliary steel plate to move downwards by the clamp so as to apply tangential force to the fireproof coating until the fireproof coating is separated from the beam member, recording the applied tension, and converting the applied tension into the tangential bonding strength of the fireproof coating.
10. A field test method for tangential bonding strength of a steel structure fireproof coating, which applies the field test device for the tangential bonding strength of the steel structure fireproof coating, according to any one of claims 1 to 8, and is characterized in that: the method comprises the following steps:
when the steel structure is a column component:
step 10, firstly coating an epoxy resin adhesive on a testing end of an auxiliary steel plate by a measurer, then adhering the epoxy resin adhesive to a fireproof coating of a column member to be measured, fixing the auxiliary steel plate through an adhesive tape, and waiting for the epoxy resin adhesive to be cured, wherein the auxiliary steel plate is horizontally arranged and a clamping end extends out of a beam member;
step 20, connecting the hoop with a transverse connecting piece;
step 30, adjusting the height of the support until the clamp can be connected with the clamping end of the auxiliary steel plate;
step 40, connecting and fixing the clamp and the clamping end of the auxiliary steel plate;
and 50, starting a hydraulic pump device, applying horizontal pulling force to the clamp, driving the auxiliary steel plate to horizontally move by the clamp so as to apply tangential force to the fireproof coating until the fireproof coating is separated from the column member, recording the applied pulling force, and converting the tangential force into the tangential bonding strength of the fireproof coating.
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| CN108824938A (en) * | 2018-07-27 | 2018-11-16 | 中铁二局第二工程有限公司 | A kind of construction Moveable Pipeline bracket and its application method |
| CN211235236U (en) * | 2019-10-14 | 2020-08-11 | 常州达姆斯检测技术有限公司 | Anti-lateral force device for fatigue test |
| CN112213259A (en) * | 2020-11-12 | 2021-01-12 | 华侨大学 | A test device that is used for carbon cloth interface bonding to cut peeling off |
| CN112666000A (en) * | 2021-01-19 | 2021-04-16 | 廊坊市阳光建设工程质量检测有限公司 | Device and method for detecting concrete strength by using common bearing platform hoop method |
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