CN210982041U - Connecting piece resistance to plucking bearing capacity testing arrangement for precast concrete sandwich thermal insulation wall - Google Patents
Connecting piece resistance to plucking bearing capacity testing arrangement for precast concrete sandwich thermal insulation wall Download PDFInfo
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- CN210982041U CN210982041U CN201921933900.6U CN201921933900U CN210982041U CN 210982041 U CN210982041 U CN 210982041U CN 201921933900 U CN201921933900 U CN 201921933900U CN 210982041 U CN210982041 U CN 210982041U
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- connecting piece
- thermal insulation
- reinforcing steel
- steel bars
- concrete
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Abstract
The utility model discloses a connecting piece uplift bearing capacity testing device for a precast concrete sandwich thermal insulation wall, which comprises a thermal insulation board, two concrete slabs, two clamping reinforcing steel bars and a universal material testing machine; the middle part of the heat insulation plate is provided with an opening; the connecting piece penetrates through the opening, and two ends of the connecting piece extend out; the two concrete plates are respectively arranged on two axial sides of the connecting piece, two ends of the connecting piece are respectively arranged in the two concrete plates, and the concrete plates are attached to the heat insulation plate; the two clamping reinforcing steel bars are respectively embedded in the two concrete plates, the clamping reinforcing steel bars and the connecting piece are positioned in the same axial direction, and one ends of the clamping reinforcing steel bars extend out of the surface of one side of the concrete plates, which is far away from the insulation board; the universal material testing machine clamps two clamping reinforcing steel bars through a clamp to test. The utility model has the advantages of simple structure, convenient use and reliable test result.
Description
Technical Field
The utility model relates to a building engineering technical field, concretely relates to connecting piece resistance to plucking bearing capacity testing arrangement for precast concrete sandwich thermal insulation wall.
Background
Building energy conservation is the key for relieving the contradiction of energy shortage in China, and wall energy conservation is the most important means for realizing building energy conservation. The traditional wall in China has the defects of overlarge self weight, low construction speed, poor heat insulation effect, unstable construction quality and the like, and the precast concrete sandwich heat insulation wall can realize integration of bearing, heat insulation and decoration, ensures the quality of the wall, reduces the workload of a construction site, and has very important significance for promoting the development of building industrialization, protecting the environment and realizing sustainable development.
The connecting piece is a key part for connecting the inner and outer leaf concrete slabs of the precast concrete sandwich heat-insulation wall body, and the stress performance of the connecting piece directly influences the safety of the wall body. The fiber reinforced composite material connecting piece has the advantages of light weight, high strength, low heat conductivity coefficient and good corrosion resistance, and is a common precast concrete sandwich heat-insulating wall connecting piece in the current engineering. Under the action of wind load and earthquake load, the inner leaf concrete plate and the outer leaf concrete plate can produce separation action, and the resistance to the separation action is reflected by the uplift bearing capacity of the connecting piece, so that the connecting piece has important significance for ensuring the safety of the wall body. If the exact numerical value of the uplift resistance bearing capacity of the fiber reinforced composite material connecting piece is lacked, the blind design of the precast concrete sandwich heat-insulation wallboard can be caused, too many unnecessary connecting pieces can be arranged, and the construction cost is improved; and the safety reserve is possibly insufficient, so that the safety hazard exists.
In summary, there is an urgent need for a scientific and reasonable testing device for evaluating the anti-pulling bearing capacity of the fiber reinforced composite connecting member.
Disclosure of Invention
The to-be-solved technical problem of the utility model is to provide a connecting piece resistance to plucking bearing capacity testing arrangement for precast concrete sandwich thermal insulation wall has simple structure, convenient to use, the reliable advantage of test result.
In order to solve the technical problem, the utility model provides a connecting piece uplift bearing capacity testing device for a precast concrete sandwich thermal insulation wall, which comprises a thermal insulation board, two concrete slabs, two clamping reinforcing steel bars and a universal material testing machine;
the middle part of the heat insulation plate is provided with an opening;
the connecting piece penetrates through the opening, and two ends of the connecting piece extend out;
the two concrete plates are respectively arranged on two axial sides of the connecting piece, two ends of the connecting piece are respectively arranged in the two concrete plates, and the concrete plates are attached to the heat insulation plate;
the two clamping reinforcing steel bars are respectively embedded in the two concrete plates, the clamping reinforcing steel bars and the connecting piece are positioned in the same axial direction, and one ends of the clamping reinforcing steel bars extend out of the surface of one side of the concrete plates, which is far away from the insulation board;
the universal material testing machine clamps two clamping reinforcing steel bars through a clamp to test.
Further, the heat preservation board is a block body with the size of 250mm × 250 mm.
Further, the insulation board is an extruded polystyrene board or a molded polystyrene board.
Further, the extension length of the connecting piece is the same as the anchoring length in use.
Further, the concrete slab is formed by pouring concrete after the template is built.
Furthermore, when the universal material testing machine is used for testing, the heat insulation plate is removed.
The utility model has the advantages that:
the utility model discloses a simple structure, convenient to use's precast concrete sandwich thermal insulation wall fiber reinforced composite connecting piece resistance to plucking bearing capacity testing arrangement.
The utility model provides a precast concrete sandwich thermal insulation wall body fibre reinforced composite connecting piece resistance to plucking bearing capacity testing arrangement can accurately obtain the connecting piece resistance to plucking bearing capacity, and the wall body design of being convenient for reaches safe, economic dual target.
Drawings
FIG. 1 is a schematic view of the present invention during testing;
FIG. 2 is a schematic front view of a test piece of the present invention;
FIG. 3 is a schematic top view of a test piece according to the present invention;
fig. 4 is a schematic cross-sectional view a-a of fig. 3 according to the present invention.
Detailed Description
The present invention is further described with reference to the following drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.
Referring to fig. 1 to 4, an embodiment of the device for testing the pulling resistance and bearing capacity of the connecting piece for the precast concrete sandwich thermal insulation wall of the present invention includes a thermal insulation board 3, two concrete slabs 2, two clamping steel bars 1 and a universal material testing machine 5; heated board, two concrete slab and two centre gripping reinforcing bar cooperations form the test piece, and the test piece is fixed with connecting piece 4, and the connecting piece material is fibre reinforced composite.
The middle part of the heat insulation plate is provided with an opening; the connecting piece penetrates through the opening, and two ends of the connecting piece extend out; the two concrete plates are respectively arranged on two axial sides of the connecting piece, two ends of the connecting piece are respectively arranged in the two concrete plates, and the concrete plates are attached to the insulation board; the two clamping reinforcing steel bars are respectively embedded in the two concrete plates, the clamping reinforcing steel bars and the connecting piece are positioned in the same axial direction, and one ends of the clamping reinforcing steel bars extend out of the surface of one side of the concrete plates, which is far away from the insulation board; the universal material testing machine clamps two clamping reinforcing steel bars through the clamp to test.
The method comprises the steps of cutting a 50mm thick extruded polystyrene insulation board into blocks of 250mm × 250mm in size, forming holes in the center of the blocks, enabling the hole size to be the same as the cross section size of a fiber reinforced composite material connecting piece, inserting the fiber reinforced composite material connecting piece into the holes, adjusting the position to enable the protruding length of the fiber reinforced composite material connecting piece to be 30mm on two sides of the insulation board, assembling a template, placing clamping reinforcing steel bars with the diameter of 16mm, enabling the clamping reinforcing steel bars to be HRB 400-grade reinforcing steel bars, enabling the clamping reinforcing steel bars to protrude 150mm from holes reserved in the template, placing the extruded polystyrene insulation board 3 inserted into the fiber reinforced composite material connecting piece into the corresponding position of the template, pouring concrete boards with the designed strength grade of C30, leveling the tops of the concrete boards, forming two concrete boards due to the space between the insulation boards, removing the.
Clamping the end part of the clamping steel bar on the test piece in a clamp of the universal material testing machine, applying a tensile load, and centering the clamp and the pulled test piece in the loading process.
When the fiber reinforced composite material connecting piece is pulled out of the concrete slab or the concrete slab is cracked, the test is finished, and the tensile load measured by the load sensor in the universal material testing machine at the moment is recorded, namely the pulling resistance bearing capacity of the fiber reinforced composite material connecting piece.
The embedded length of the clamping reinforcing steel bar in the concrete slab meets the requirement of the anchoring length of the clamping reinforcing steel bar in the concrete.
The device is simple in integral structure, convenient and reliable to operate, and common operators can prepare test pieces, so that the device can be widely popularized, and the test requirements of low cost and high precision are met.
The above embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutes or changes made by the technical personnel in the technical field on the basis of the utility model are all within the protection scope of the utility model. The protection scope of the present invention is subject to the claims.
Claims (6)
1. A connecting piece uplift bearing capacity testing device for a precast concrete sandwich heat-insulation wall is characterized by comprising a heat-insulation plate, two concrete plates, two clamping reinforcing steel bars and a universal material testing machine;
the middle part of the heat insulation plate is provided with an opening;
the connecting piece penetrates through the opening, and two ends of the connecting piece extend out;
the two concrete plates are respectively arranged on two axial sides of the connecting piece, two ends of the connecting piece are respectively arranged in the two concrete plates, and the concrete plates are attached to the heat insulation plate;
the two clamping reinforcing steel bars are respectively embedded in the two concrete plates, the clamping reinforcing steel bars and the connecting piece are positioned in the same axial direction, and one ends of the clamping reinforcing steel bars extend out of the surface of one side of the concrete plates, which is far away from the insulation board;
the universal material testing machine clamps two clamping reinforcing steel bars through a clamp to test.
2. The connecting piece uplift bearing capacity testing device for the precast concrete sandwich thermal insulation wall body as claimed in claim 1, wherein the thermal insulation plate is a block with the size of 250mm × 250 mm.
3. The device for testing the pulling resistance and the bearing capacity of the connecting piece for the precast concrete sandwich thermal insulation wall as claimed in claim 1, wherein the thermal insulation board is an extruded polystyrene board or a molded polystyrene board.
4. The device for testing the uplift bearing capacity of the connecting piece for the precast concrete sandwich thermal insulation wall body as claimed in claim 1, wherein the extension length of the connecting piece is the same as the anchoring length in use.
5. The connecting piece uplift bearing capacity test device for the precast concrete sandwich thermal insulation wall body as claimed in claim 1, wherein the concrete slab is formed by pouring concrete after the formwork is built.
6. The connecting piece uplift bearing capacity testing device for the precast concrete sandwich thermal insulation wall body as claimed in claim 1, wherein the thermal insulation plate is removed during testing by the universal material testing machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921933900.6U CN210982041U (en) | 2019-11-11 | 2019-11-11 | Connecting piece resistance to plucking bearing capacity testing arrangement for precast concrete sandwich thermal insulation wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921933900.6U CN210982041U (en) | 2019-11-11 | 2019-11-11 | Connecting piece resistance to plucking bearing capacity testing arrangement for precast concrete sandwich thermal insulation wall |
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| Publication Number | Publication Date |
|---|---|
| CN210982041U true CN210982041U (en) | 2020-07-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921933900.6U Active CN210982041U (en) | 2019-11-11 | 2019-11-11 | Connecting piece resistance to plucking bearing capacity testing arrangement for precast concrete sandwich thermal insulation wall |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116008060A (en) * | 2023-01-10 | 2023-04-25 | 北京建筑大学 | Prefabricated composite wall insulation layer and mechanical property test device for connecting piece thereof |
-
2019
- 2019-11-11 CN CN201921933900.6U patent/CN210982041U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116008060A (en) * | 2023-01-10 | 2023-04-25 | 北京建筑大学 | Prefabricated composite wall insulation layer and mechanical property test device for connecting piece thereof |
| CN116008060B (en) * | 2023-01-10 | 2024-01-23 | 北京建筑大学 | Prefabricated composite wall insulation layer and mechanical property test device for connecting piece thereof |
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