CN212379196U - Concrete beam durability test holding device - Google Patents
Concrete beam durability test holding device Download PDFInfo
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- CN212379196U CN212379196U CN202021442978.0U CN202021442978U CN212379196U CN 212379196 U CN212379196 U CN 212379196U CN 202021442978 U CN202021442978 U CN 202021442978U CN 212379196 U CN212379196 U CN 212379196U
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Abstract
The application belongs to the technical field of concrete test devices. The application provides a concrete beam durability test holds and carries device, through the atress roof, the atress bottom plate, connecting piece and fastener carry out the centre gripping to two concrete beams fixedly, the stock solution chamber that still encloses through the inner wall of clearance between two concrete beams and corrosion unit corrodes the processing to the atress face between two concrete beams, make concrete beam can be in load and the environment of corroding the coupling keep stable hold and carry the level, not only avoid the device to soak and damage the holding of device in the corrosive liquid and carry the performance, can avoid the influence of environmental factor such as temperature with corrosive liquid and external isolated again, improve experimental accuracy and reliability.
Description
Technical Field
The application belongs to the technical field of concrete test device, especially, relate to a concrete beam durability test carries device.
Background
At present, a large number of concrete buildings with the service life of more than 20 years exist in China, the buildings are long in service life and early in construction time, the problems of aging, cracking and the like exist, if reinforcement and maintenance are not carried out in time, the service value of a large number of buildings is lost, the loss of manpower, material resources and economy is caused, and safety accidents are caused in serious cases. The durability of the concrete structure is an important ring of the design link and also an important performance of the building in the service process. The durability of the concrete structure is checked in time, and the method has important values for prolonging the service life of the building engineering, reducing the subsequent engineering maintenance cost and saving the total construction cost of the engineering construction.
With the strategic proposal of the offshore silk road, the engineering construction of China on the ocean is gradually increased, such as the development and construction of islands and artificial islands, and the construction of large buildings such as ports, wharfs and ocean platforms. However, the marine environment is a severe environment in engineering service, and in the traditional reinforced concrete structure, the reinforcing steel bars in the structure are corroded rapidly due to chloride ions in seawater, so that the problem of insufficient durability of the early ground of the structure is solved. The mechanical degradation rule of the concrete structure in a corrosive environment is analyzed, and the durability of the concrete structure under severe conditions such as ocean and the like is checked, so that a method for improving the durability is found, and the method serves the strategy of offshore silk roads in China.
However, at present, most of the test devices for the durability of the reinforced concrete only consider the physical action alone, and the research on the coupling action of the environmental action and the physical action is lacked, especially the research on the durability of the structure under the coupling action of the actual service environment and the load is rarely reported, which greatly hinders the popularization and the application of the concrete in the marine environment. The existing concrete durability test carrying device used in a stress state and a corrosive environment is poor in accuracy and reliability.
SUMMERY OF THE UTILITY MODEL
In view of this, the application provides a concrete beam durability test carries device, can make the roof beam keep long-term stable year level of carrying in the corrosive environment, improves experimental accuracy and reliability.
The specific technical scheme of the application is as follows:
a concrete beam durability test carrying device comprises a stressed top plate, a stressed bottom plate, a connecting piece, a fastening piece and a corrosion device;
the stress top plate and the stress bottom plate are respectively detachably connected with two ends of the connecting piece;
the fastener is detachably arranged on the connecting piece and is used for clamping and fixing the stressed top plate and the stressed bottom plate to a plurality of concrete beams;
the corrosion device is installed between the two concrete beams and is in sealing connection with the side wall between the two concrete beams, and a liquid storage cavity used for infiltrating corrosive liquid is enclosed by a gap between the two concrete beams and the inner wall of the corrosion device.
Preferably, a plurality of supports are further included;
a plurality of the support sets up between two concrete beam along concrete beam horizontal direction's the central axis symmetry, and closely laminates with two concrete beam.
Preferably, the number of the support and the number of the corrosion devices are two;
the end part of the corrosion device is connected with the end part of the support in a sealing way, and the inner wall of the support, the inner wall of the corrosion device and the gap between the two concrete beams form the liquid storage cavity.
Preferably, the top and the bottom of the corrosion device are respectively provided with a water inlet pipe and a water outlet pipe, and pipe covers which are in sealing fit with the pipe orifices are detachably arranged at the pipe orifices of the water inlet pipe and the water outlet pipe respectively.
Preferably, the connecting piece can movably pass through the through holes on the stress top plate and the stress bottom plate;
the two fasteners are adjustably arranged on two sides of the connecting piece and are respectively clung to the stressed bottom plate and the stressed top plate.
Preferably, the bearing device further comprises a gasket, wherein the gasket is placed between the stressed top plate and/or the stressed bottom plate and the fastener.
Preferably, the connector is threadedly connected to the fastener.
Preferably, the number of the connecting pieces is four, and the connecting pieces are symmetrically arranged along the horizontal axis of the stress bottom plate and the stress top plate.
To sum up, the application provides a concrete beam durability test holds and carries device, through the atress roof, the atress bottom plate, connecting piece and fastener carry out the centre gripping to two concrete beams fixed, the stock solution chamber that still encloses through the inner wall of clearance between two concrete beams and corrosion unit corrodes the processing to the atress face between two concrete beams, make concrete beam can keep stable in the environment of load and corruption coupling hold and carry the level, not only avoid the device to soak the holding of damage device in the corrosive liquid and carry the performance, can avoid the influence of environmental factor such as temperature with corrosive liquid and external isolated again, improve experimental accuracy and reliability.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
FIG. 1 is a front view of a concrete beam durability test carrier according to an embodiment of the present application;
FIG. 2 is a left side view of a concrete beam durability test carrier according to an embodiment of the present application;
FIG. 3 is a plan view of a corrosion unit in a concrete beam durability test carrier according to an embodiment of the present invention;
fig. 4 is a left side view of a corrosion device in a concrete beam durability test carrier according to an embodiment of the present application.
Illustration of the drawings: 1. a stressed top plate; 2. a stressed base plate; 3. a connecting member; 4. a gasket; 5. a fastener; 6. a corrosion device; 7. a support; 8. a water inlet pipe; 9. a water outlet pipe; 10. a tube cover; 11. a second concrete beam; 12. a first concrete beam.
Detailed Description
In order to make the objects, features and advantages of the present application more obvious and understandable, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the embodiments described below are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the embodiments of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only used for convenience in describing the embodiments of the present application and simplifying the description, but do not indicate or imply that the referred devices or elements must have specific orientations, be configured in specific orientations, and operate, and thus, should not be construed as limiting the embodiments of the present application.
In the description of the embodiments of the present application, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected unless explicitly stated or limited otherwise; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. Specific meanings of the above terms in the embodiments of the present application can be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1 to 2, fig. 1 is a front view of a concrete beam durability test carrying device of the present application, and fig. 2 is a left view of the concrete beam durability test carrying device of the present application.
The embodiment of the application provides a concrete beam durability test carrying device, which comprises a stressed top plate 1, a stressed bottom plate 2, a connecting piece 3, a fastening piece 5 and a corrosion device 6; the stressed top plate 1 and the stressed bottom plate 2 are respectively detachably connected with two ends of the connecting piece 3; the fastener 5 is detachably arranged on the connecting piece 3 and is used for clamping and fixing the stressed top plate 1 and the stressed bottom plate 2 to the plurality of concrete beams; the corrosion device 6 is arranged between the two concrete beams and is in sealing connection with the side walls between the two concrete beams, and a liquid storage cavity for infiltrating corrosive liquid is formed by a gap between the two concrete beams and the inner walls of the corrosion device 6 in a surrounding mode.
In the embodiment of the application, through atress roof 1, atress bottom plate 2, connecting piece 3 and fastener 5 carry out the centre gripping fixedly to two concrete beams, the stock solution chamber that still encloses through the inner wall between two concrete beams and corrosion device 6 corrodes the stress surface between to two concrete beams and handles, make concrete beam can keep stable in the environment of load and corrosion coupling to hold and carry the level, the device of not only avoiding soaking damages the holding of device and carries the performance in corrosive liquid, can avoid the influence of environmental factors such as temperature with corrosive liquid and external isolated again, improve experimental accuracy and reliability.
In the embodiment of the application, the stress top plate 1 and the stress bottom plate 2 can be vertically or horizontally stacked, the shapes, the areas and the number of the two stress plates can be adjusted adaptively according to the size of a concrete beam, and the stress top plate and the stress bottom plate can be made of common steel plates with the same shapes and sizes. The arrangement of the two stress plates ensures that the concrete beam clamped in the middle is stressed uniformly. The holding and carrying device of this application passes through the relative position of 3 preliminary fixed atress roofs 1 and atress bottom plate 2 of connecting piece, avoids producing the horizontal skew among the test process and influences the test result, and certain load is applyed to the concrete beam to final centre gripping fixed action of 5 realization of rethread setting up fasteners on connecting piece 3. The corrosion device 6 may be a rubber sleeve processed from fluororubber or the like, or may be a rigid product having high strength and corrosion resistance, and is not particularly limited. The corrosive liquid specifically refers to a common corrosive environment in engineering construction such as seawater. The sealing means may be applied by applying a sealant between the edge of the etching unit 6 and the side walls of the two concrete beams. The inside stock solution chamber that has formed of corrosion unit 6, corrosive liquid can permeate to the stress surface of two concrete beams, and still with corrosive liquid and external isolated, the clamping action of cooperation connecting piece 3 and fastener 5 has guaranteed promptly that the concrete beam is in the load of long-term stability and in the coupling environment of corruption. The utility model provides a hold and carry device can apply the load to many concrete beams simultaneously to set up corrosion unit 6 between two concrete beams, alright test with many concrete beams simultaneously, improve test efficiency greatly.
Further, a plurality of supports 7 are also included; a plurality of supports 7 are symmetrically arranged between the two concrete beams along the central axis of the horizontal direction of the concrete beams and are tightly attached to the two concrete beams.
In the embodiment of the application, support 7 is provided for two concrete beams through setting up for atress between the concrete beam is even, has guaranteed a plurality of concrete beams can carry out experimental accuracy simultaneously, does not also influence the stability of carrying. Meanwhile, the support 7 has a certain thickness, and the support 7 is arranged to be beneficial to corrosive liquid to be immersed into a stress surface between the two concrete beams, so that the real environment immersed in the corrosive liquid can be better simulated. The support 7 may be made of an elastic material having high strength and corrosion resistance, such as fluororubber, for the purpose of balancing stress, and the shape and size of the support 7 may be adjusted according to the concrete beam without specific limitation.
Referring to fig. 3 to 4, fig. 3 is a plan view of the corrosion device 6 in the concrete beam durability test carrying device according to the embodiment of the present invention, and fig. 4 is a left side view of the corrosion device 6 in the concrete beam durability test carrying device according to the embodiment of the present invention.
Furthermore, two supports 7 and two corrosion devices 6 are provided; the end parts of the corrosion devices 6 are hermetically connected with the end parts of the supports 7, and liquid storage cavities are enclosed by the inner walls of the two supports 7, the inner walls of the two corrosion devices 6 and gaps between the two concrete beams.
In the embodiment of the application, a frame-shaped device is formed by the two supports 7 and the two corrosion devices 6, a liquid storage cavity is formed in the frame and in the gap between the two concrete beams, the surface area of the concrete beams soaked with the corrosion liquid can be adjusted by adjusting the distance between the two supports 7, and the test has certain flexibility. Meanwhile, the side wall of the concrete beam can form a sealed environment without being completely wrapped by the corrosion device 6, so that the material use cost is saved, and the assembly and disassembly are more convenient.
Furthermore, a water inlet pipe 8 and a water outlet pipe 9 are respectively arranged at the top and the bottom of the corrosion device 6, and pipe caps 10 which are in sealing fit with the pipe orifices are respectively detachably arranged at the pipe orifices of the water inlet pipe 8 and the water outlet pipe 9.
In the embodiment of the application, the water inlet pipe 8 and the water outlet pipe 9 are respectively used for filling and discharging corrosive liquid, so that the corrosive liquid can be supplemented or replaced in time, the corrosion treatment for a long time can be maintained, the disassembly is convenient, and the elements of the whole testing device cannot be polluted.
Further, the connecting piece 3 can movably pass through the through holes on the stress top plate 1 and the stress bottom plate 2; two fasteners 5 are adjustably mounted on two sides of the connecting piece 3 and are respectively attached to the stressed bottom plate 1 and the stressed top plate 2.
In the embodiment of the application, the fastener 5 can be movably installed on the connecting piece 3, and the relative position of the fastener 5 on the connecting piece 3 can be adjusted, so that the fastening force between the stressed top plate 1 and the stressed bottom plate 2 can be adjusted, different tests of loads can be adapted, and the universality of the testing device can be improved.
Further, a gasket 4 is further included, and the gasket 4 is placed between the stressed top plate 1 and/or the stressed bottom plate 2 and the fastener 5.
In the embodiment of the present application, the spacers 4 are provided to extend the level of load of the connecting members 3 and the fastening members 5 on the concrete beam in order to avoid slipping or loosening.
Further, the connecting member 3 is threadedly coupled with the fastening member 5.
In the embodiment of the present application, the connecting member 3 may be a screw, the fastening member 5 may be a nut, and the size of the through hole, the screw, the gasket 4 and the nut may be adaptively adjusted to the size of the concrete beam. The connection mode is convenient for adjusting different preset load values, the load is applied conveniently and accurately, and the long-term stable load-bearing level can be maintained.
Furthermore, four connecting pieces 3 are arranged symmetrically along the horizontal axis of the stressed bottom plate 2 and the stressed top plate 1.
The concrete beam durability test carrying device has the following specific application examples:
the stressed top plate 1 and the stressed bottom plate 2 are made of common steel plates, 2 pieces of the stressed top plate and the stressed bottom plate are respectively taken, the size of the stressed top plate is 250 multiplied by 80 multiplied by 30mm, and two round holes with the diameter of 32mm are respectively arranged in the length direction. The screw rod is formed by tapping common round steel, 4 pieces of the screw rod are taken, the diameter of the screw rod is 30mm, the length of the screw rod is 700mm, and 8 pieces of gaskets and nuts which are made of the same materials as the screw rod and are adaptive to the aperture are taken. The corrosion device 6 and the support 7 are processed into a whole by using fluororubber as a raw material, a water inlet pipe 8, a water outlet pipe 9 and a pipe cover 10 are arranged on the corrosion device 6, and the corrosion device 6 is hermetically connected with the side wall of the concrete beam through sealant. The concrete beam has the size of length multiplied by width multiplied by height multiplied by 1200 multiplied by 120 multiplied by 240mm, the longitudinal reinforcing bar is 10mmGFRP bar, the stirrup is 8mm @100GFRP bar, the concrete strength is C40, and the concrete proportion (kg/m)3): cement (456): water (205): sand (574): and (5) performing static test on the stones (1166) after 28 days of maintenance under standard conditions to determine the cracking load and the limit load of the beam.
The concrete beam durability test method comprises the following steps:
firstly, placing a stressed bottom plate 2, a first concrete beam 12, a second concrete beam 11 and a stressed top plate 1 in sequence from bottom to top, filling a support 7 between the two concrete beams, finely adjusting to align the two concrete beams, sealing the side wall between a corrosion device 6 and the two concrete beams, penetrating a screw through holes of the stressed bottom plate 2 and the stressed top plate 1, respectively penetrating a gasket 4 and a nut at two ends of the screw in sequence, and screwing the nut;
placing clamp type extensometers between the stressed bottom plate 2 and the first concrete beam 12 and close to the screw rods respectively, loading a preset load by using a hydraulic jack, and recording the readings of the clamp type extensometers;
thirdly, detaching the screw cap and the gasket 4, readjusting the mounting position of the fastener 5 to enable the reading of the clamp-type extensometer to be equal to the recorded value, assembling the gasket 4 and the screw cap to finish load clamping and fixing, and then unloading the hydraulic jack;
and step four, opening a pipe cover 10 at the position of an upper water inlet pipe 8 of the corrosion device 6, pouring corrosive liquid into the liquid storage cavity through the water inlet pipe 8, screwing down the pipe cover 10, and testing the structural performance of the concrete beam after corrosion.
The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (8)
1. A concrete beam durability test carrying device is characterized by comprising a stressed top plate, a stressed bottom plate, a connecting piece, a fastening piece and a corrosion device;
the stress top plate and the stress bottom plate are respectively detachably connected with two ends of the connecting piece;
the fastener is detachably arranged on the connecting piece and is used for clamping and fixing the stressed top plate and the stressed bottom plate to a plurality of concrete beams;
the corrosion device is installed between the two concrete beams and is in sealing connection with the side wall between the two concrete beams, and a liquid storage cavity used for infiltrating corrosive liquid is enclosed by a gap between the two concrete beams and the inner wall of the corrosion device.
2. The concrete beam durability test carrying apparatus according to claim 1, further comprising a plurality of supports;
a plurality of the support sets up between two concrete beam along concrete beam horizontal direction's the central axis symmetry, and closely laminates with two concrete beam.
3. The concrete beam durability test carrying device according to claim 2,
the number of the support and the number of the corrosion devices are two;
the end part of the corrosion device is connected with the end part of the support in a sealing way, and the inner wall of the support, the inner wall of the corrosion device and the gap between the two concrete beams form the liquid storage cavity.
4. The concrete beam durability test carrying device as claimed in claim 1, wherein a water inlet pipe and a water outlet pipe are respectively arranged at the top and the bottom of the corrosion device, and pipe covers which are in sealing fit with the pipe openings are respectively and detachably arranged at the pipe openings of the water inlet pipe and the water outlet pipe.
5. The concrete beam durability test carrying device according to claim 1,
the connecting piece can movably penetrate through the through holes on the stress top plate and the stress bottom plate;
the two fasteners are adjustably arranged on two sides of the connecting piece and are respectively clung to the stressed bottom plate and the stressed top plate.
6. The concrete beam durability test carrying device according to claim 5, further comprising a spacer placed between the stressed top plate and/or the stressed bottom plate and the fastener.
7. The concrete beam durability test carrying device according to claim 5,
the connecting piece is in threaded connection with the fastening piece.
8. The concrete beam durability test carrying device according to claim 5, wherein the number of the connecting members is four, and the four connecting members are symmetrically arranged along an axis of the stressed bottom plate and the stressed top plate in the horizontal direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021442978.0U CN212379196U (en) | 2020-07-21 | 2020-07-21 | Concrete beam durability test holding device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021442978.0U CN212379196U (en) | 2020-07-21 | 2020-07-21 | Concrete beam durability test holding device |
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| CN212379196U true CN212379196U (en) | 2021-01-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115541488A (en) * | 2022-11-30 | 2022-12-30 | 成都理工大学 | Corrosion test device of section steel concrete test piece under high-temperature water corrosion environment |
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2020
- 2020-07-21 CN CN202021442978.0U patent/CN212379196U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115541488A (en) * | 2022-11-30 | 2022-12-30 | 成都理工大学 | Corrosion test device of section steel concrete test piece under high-temperature water corrosion environment |
| CN115541488B (en) * | 2022-11-30 | 2023-03-24 | 成都理工大学 | Corrosion test device of section steel concrete test piece under high-temperature water corrosion environment |
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