Bending and pulling detection test piece between brick masonry and reinforced concrete layer
By designing bending and tensile test specimens for brick masonry and reinforced concrete layers, the problems of large specimen size and transportation difficulties in masonry structure testing were solved, achieving the effects of simplifying operation and improving testing accuracy.
Patent Information
- Application Number
- CN202520237241.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-14
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2035-02-14
AI Technical Summary
In existing tests of the flexural tensile strength of masonry structures, the specimens are large, transportation and testing operations are cumbersome, and the mortar strength of historical masonry buildings is low, resulting in inaccurate test data.
A bending and tensile test specimen for the connection between brick masonry and reinforced concrete layer is designed. The brick masonry, consisting of three single bricks, is connected to the reinforced concrete layer. By simplifying the specimen size and loading device, a convenient testing method is achieved.
It effectively simulates the interfacial bonding deformation of brick masonry reinforced structures under load, reduces the test size, facilitates operation, and improves the accuracy and efficiency of testing.
Smart Images
Figure CN223784090U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of brick masonry bending detection, especially to a bending and tension detection test piece between brick masonry and reinforced concrete layer. BACKGROUND
[0002] Masonry structures are widely distributed in various places at home and abroad, have a long history and are widely used. The bending tensile strength detection of brick masonry is divided into along-joint section bending test and along-tooth joint section bending test, both of which adopt the method of simply supported beam three-point concentrated loading. The existing technology is about the detection of the bending performance of masonry along the joint section and the bending performance of masonry along the tooth joint section, and the size of the test piece is large, transportation is difficult, and the test operation is relatively complicated. Moreover, the mortar strength in the historical masonry building is low, and when the existing technology is used for detection, the test piece is prone to damage during transportation, so it is difficult to obtain accurate data. SUMMARY
[0003] The utility model discloses a bending and tension detection test piece between brick masonry and reinforced concrete layer, which solves the problem of large size of the test piece in the prior art and difficulty in transportation and detection.
[0004] To achieve the above-mentioned purpose, the utility model provides a bending and tension detection test piece between brick masonry and reinforced concrete layer, which comprises a brick masonry and a reinforced concrete layer, the reinforced concrete layer is connected with the brick masonry, the brick masonry is composed of three single bricks, and the three single bricks are stacked in the vertical direction.
[0005] Preferably, the length of the single brick is 150-300mm, the width is 80-150mm, the thickness is 30-80mm, and the mortar thickness is 10mm.
[0006] Preferably, the bonding width of the brick masonry and the reinforced concrete layer is the height of the brick masonry, and the bonding length is half of the length of the single brick.
[0007] Preferably, the length of the reinforced concrete layer is the same as the length of the single brick, and the width of the reinforced concrete layer is the same as the height of the brick masonry.
[0008] Preferably, the thickness of the reinforced concrete layer is 30-80mm.
[0009] Preferably, the depth of the pointing of the mortar in the bonding area of the brick masonry and the reinforced concrete layer is not greater than 40mm.
[0010] Therefore, the bending and tension test piece between the brick masonry and the reinforced concrete layer has the advantages that the bending and tension performance between the brick masonry of 3 single brick masonry layers and the reinforced concrete layer can be detected, the interface bonding deformation of the existing brick masonry reinforced structure under the load during the service period can be effectively simulated, and meanwhile, the test size is reduced, and the operation is facilitated.
[0011] The technical scheme of the present application will be further described in detail below with reference to the drawings and embodiments. BRIEF DESCRIPTION OF DRAWINGS
[0012] Fig. 1 It is a structural schematic view of the bending and tension test piece between the brick masonry and the reinforced concrete layer of the present application.
[0013] Fig. 2 It is a structural schematic view of the loading process of the present application.
[0014] REFERENCE NUMERALS
[0015] 1, brick masonry; 2, reinforced concrete layer; 3, loading base; 4, support; 5, counterforce frame; 6, force transmission beam; 7, force sensor; 8, jack; 9, bolt. DETAILED DESCRIPTION
[0016] The technical scheme of the present application will be further described in detail below with reference to the drawings and embodiments.
[0017] Unless otherwise defined, technical terms or scientific terms used in the present application shall be understood as the usual meanings understood by persons having ordinary skills in the field to which the present application pertains. The terms "first", "second" and similar words used in the present application do not represent any order, number or importance, but are only used to distinguish different components. The terms "include" or "contain" and similar words mean that the elements or objects before the words cover the elements or objects listed after the words and their equivalents, without excluding other elements or objects. The terms "connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms "up", "down", "left", "right" and the like are only used to represent relative positional relationships, which can change accordingly when the absolute positions of the described objects change.
[0018] EMBODIMENT
[0019] Please refer to Figs. 1-2The utility model provides a kind of bending and tension detection test piece between brick masonry and reinforced concrete layer, including brick masonry 1 and reinforced concrete layer 2, reinforced concrete layer 2 is connected with brick masonry 1 by mortar, brick masonry 1 is composed of three single bricks, three single bricks are stacked in vertical direction, brick masonry 1 has no vertical joint only horizontal joint, the size of the bending resistance performance detection test piece of existing brick masonry 1 is simplified, so it can reduce test workload, it is convenient to operate, more can promote the success of test.
[0020] Single brick length is 150-300mm, width is 80-150mm, thickness is 30-80mm, mortar thickness is 10mm.
[0021] Half of the wall surface area of brick masonry 1 is bonded with reinforced concrete layer 2, and the mortar joint in the bonding range is deducted by different depths, the bonding width of brick masonry 1 and reinforced concrete layer 2 is the height of brick masonry 1, and the bonding length is half of the single brick length. The length of reinforced concrete layer 2 is the same as the single brick length, and the width of reinforced concrete layer 2 is the same as the height of brick masonry 1. The thickness of the concrete of reinforced concrete layer 2 is 30-80mm. The depth of pointing of mortar in the area bonded by brick masonry 1 and reinforced concrete layer 2 is not more than 40mm.
[0022] After three single bricks are built into a small brick masonry 1, curing is carried out, after curing is completed, reinforced concrete layer 2 is poured and bonded with brick masonry 1, and then curing is carried out, after curing is completed, loading is carried out. The bending and tension loading device assembly steps between existing brick masonry 1 and reinforced concrete layer 2 are as follows: first, anchor support 4 on the slidable loading base 3 through bolt 9, to avoid the sliding of support 4 causing the test piece to slide off, the position of support 4 is adjusted by sliding; then anchor counterforce frame 5 on the slidable base through bolt 9; finally, anchor counterforce frame 5 through bolt 9. Place the test piece of existing brick masonry 1 and reinforced concrete layer 2 after curing on support 4, load transmission beam 6 at the position above the test piece, transmission beam 6 transmits the force of jack 8 to the test piece, the value of the force is collected by force sensor 7, greatly reducing the test workload, simple operation. The detection method can meet the reinforcement of different pointing depths, while improving the test efficiency and accuracy. The loading device is more suitable for loading small test pieces, facilitating the operation of the test, and improving the mobility of the test.
[0023] The test piece is loaded by the jack 8, the reaction frame 5, the loading base 3, the support 4 and the force transmission beam 6 are all made of steel material, the height of the reaction frame 5 is controlled in 300-500mm, the width is 300-500mm, and the thickness is 30-80mm; the reaction frame 5 and the support 4 are connected with the loading base 3 through the 6-16mm diameter bolt 9; the length of the loading base 3 is 400-600mm, the width is 200-400mm, and the thickness is 30-80mm; the height of the support 4 is 50-200mm, the width is 200-400mm, and the thickness is 30-50mm; the diameter of the cylinder on the support 4 is 10-20mm, and the length of the cylinder is 200-400mm. The length of the force transmission beam 6 is 200-400mm, the width is 50-80mm, the thickness is 50-80mm, the wall thickness is 10-20mm, the diameter of the cylinder is 10-20mm, and the length of the cylinder is 200-400mm.
[0024] Therefore, the bending and tension test piece between the brick masonry and the reinforced concrete layer is adopted, the bending and tension performance between the brick masonry of 3 single brick layers and the reinforced concrete layer is detected, the interface bonding deformation of the existing brick masonry reinforced structure under the load during the service period can be effectively simulated.
[0025] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the utility model and not to limit them, although the utility model has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that: the technical solutions of the utility model can still be modified or replaced, and these modifications or replacements cannot make the modified technical solutions deviate from the spirit and scope of the technical solutions of the utility model.
Claims
1. A flexural tension test specimen between brick masonry and reinforced concrete layer, characterized in that: It includes brick masonry and a reinforced concrete layer, the reinforced concrete layer being connected to the brick masonry, the brick masonry being composed of three individual bricks stacked vertically.
2. The bending and tensile test specimen between brick masonry and reinforced concrete layer according to claim 1, characterized in that: The length of each brick is 150-300mm, the width is 80-150mm, the thickness is 30-80mm, and the mortar thickness is 10mm.
3. A flexural tension test specimen between brick masonry and reinforced concrete layer according to claim 2, characterized in that: The bonding width between the brick masonry and the reinforced concrete layer is equal to the height of the brick masonry, and the bonding length is half the length of a single brick.
4. A flexural tension test specimen between brick masonry and reinforced concrete layer according to claim 3, characterized in that: The length of the reinforced concrete layer is the same as the length of the single brick, and the width of the reinforced concrete layer is the same as the height of the brick masonry.
5. A flexural tension test specimen between brick masonry and reinforced concrete layer according to claim 4, characterized in that: The thickness of the reinforced concrete layer and the bonding thickness are 30-80 mm.
6. A flexural tension test specimen between brick masonry and reinforced concrete layer according to claim 5, characterized in that: The grouting depth of the mortar in the area where the brick masonry is bonded to the reinforced concrete layer shall not exceed 40 mm.