Brick masonry reinforced building block interlayer shear performance detection device

Abstract

The utility model discloses a brick masonry reinforced building block interlayer shear performance detection device which comprises a shear test piece, the shear test piece is composed of a reinforced plaster layer, brick bodies and a through seam, the brick bodies are connected through the through seam, the reinforced plaster layer is arranged on the outer surfaces of the brick bodies, a supporting base is arranged below the shear test piece, and the supporting base is arranged on the outer surfaces of the brick bodies. The supporting base comprises a notch support and a fixed bottom plate, the notch support is arranged on the upper surface of the fixed bottom plate, a load distribution beam is arranged above the shear test piece, and a jack is arranged above the load distribution beam. By the adoption of the device for detecting the interlayer shear performance of the brick masonry reinforced building block, the test workload is reduced, the test process is simplified, the overall stability of a test piece in the loading process is guaranteed, and the test accuracy is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of masonry structure measurement, especially to a brick masonry reinforced block interlayer shearing performance detection device. BACKGROUND

[0002] Masonry structure is low in bearing capacity compared with reinforced concrete structure due to long time, and lacks corresponding seismic fortification measures, so when moderate earthquake or strong earthquake occurs, masonry structure is often severely damaged due to poor seismic performance. In actual work, masonry structure reinforcement engineering is often encountered, and methods such as reinforced concrete surface layer reinforcement method, mortar surface layer reinforcement method, external steel reinforcement method and external fiber material reinforcement method are usually used for brick masonry structure reinforcement.

[0003] There are many detection methods for the bonding performance of mortar layer between brick masonry structures, which are classified according to shear types, including single-side shear test, double-side shear test, etc., and classified according to the number of bricks, including single brick, 9 bricks and 4 bricks, etc. Although the single-side shear test is simple to operate, it will have a strong bending moment on the test piece, and the double-side shear test can eliminate the influence of bending stress, but these test devices are usually designed for measuring the shear strength of mortar between brick masonry, and lack of targeted design for the test needs of masonry structure reinforcement coating.

[0004] The existing loading device is usually designed for the through joint shear strength between brick masonry, which generally adopts the 9-brick order-butane interlayer bonding method. During the test process of the double-shear test piece, the bottom protruding support shears the local test piece, and the shear bearing capacity between brick masonry is tested by applying load to the middle brick.

[0005] The existing through joint shear test piece can only measure and evaluate the shear capacity between brick masonry. With the development of existing brick masonry reinforcement technology, it is necessary to evaluate the shear capacity between the coating layer and brick masonry under different coating designs. The reinforcement coating thickness is small, and the influence of different joint depths needs to be considered. The use of an integrated vertical loading beam will load the joint and the whole brick masonry, which will greatly affect the measurement accuracy, and it is difficult to accurately obtain the shear performance between the brick masonry and the joint coating reinforcement layer. The 9-brick test piece is difficult to transport, and the overall height of the test piece is high, which is easy to produce eccentric effect during shearing, affecting the test accuracy. UTILITY MODEL CONTENTS

[0006] The utility model discloses a purpose is to provide a kind of brick masonry reinforced block interlayer shear performance detection device, to the original brick masonry mortar layer shear performance test device is improved, using multiple loading legs to form load distribution beam, simultaneously using notched support as reinforcing plastering layer support structure, through the load distribution beam formed by multiple loading legs, avoid the shear test piece in loading process due to the overall load of jack causes reinforcing plastering layer and the overall compression of brick structure, simultaneously using notched support, effective support is provided to the two sides of test piece plastering reinforcing mortar layer, simultaneously effectively avoid the sliding phenomenon caused by the size of shear test piece during loading process is smaller, and using the plastering reinforcing form of three-layer brick, reduce test workload, simplify test process.

[0007] To achieve the above object, the utility model provides a kind of brick masonry reinforced block interlayer shear performance detection device, including shear test piece, the shear test piece is composed of reinforcing plastering layer, brick, through seam, the brick is connected by the through seam, the reinforcing plastering layer is located at the outer surface of the brick, support base is equipped below the shear test piece, the support base includes notched support, fixed bottom plate, the notched support is located on the upper surface of the fixed bottom plate, load distribution beam is equipped above the shear test piece, jack is equipped above the load distribution beam.

[0008] Preferably, the number of the brick is three, the three bricks are vertically and parallel distributed, the through seam is arranged between the adjacent bricks, the reinforcing plastering layer is arranged on the opposite outer surfaces of the bricks, and the reinforcing plastering layer and the through seam are connected by pointing and plastering.

[0009] Preferably, the notched support includes two notched support members, the notched support members are L-shaped, the two notched support members are symmetrically arranged at the two ends of the upper surface of the fixed bottom plate, and the two notched support members are arranged on the upper surface of the fixed bottom plate by fixed bolts.

[0010] Preferably, the horizontal distance between the inner surfaces of the upper ends of the two notched support members corresponds to the size of the shear test piece, the thickness of the inner notches of the two notched support members corresponds to the thickness of the reinforcing plastering layer, and the horizontal distance between the inner surfaces of the lower ends of the two notched support members corresponds to the size of the brick.

[0011] Preferably, the load distribution beam includes a support steel beam, loading legs, and fixed screws, the loading legs are fixedly arranged on the lower surface of the support steel beam by the fixed screws, and the loading legs correspond to the positions of the bricks.

[0012] Preferably, the jack is vertically arranged above the support cross beam, and the lower surface of the jack is in contact with the upper surface of the support cross beam.

[0013] Therefore, the brick masonry reinforced block interlayer shear performance detection device has the following technical effects:

[0014] (1) The device adopts multiple loading legs to form a load distribution beam, which avoids the overall loading of the jack during the loading process, which causes the reinforced plaster layer and the brick structure to be compressed as a whole, and avoids test errors caused by different jointing and finishing reinforcement methods;

[0015] (2) The device uses a notched support as a reinforced plaster layer support structure to provide effective support for the two sides of the test piece, while effectively avoiding the slipping phenomenon caused by the small size of the shear test piece during loading, ensuring the overall stability of the test piece during loading and improving the accuracy of the test;

[0016] (3) The device adopts a three-layer brick masonry reinforcement form to reduce the test workload and simplify the test process.

[0017] The technical scheme of the present application will be further described in detail below with reference to the accompanying drawings and examples. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structural schematic diagram of an embodiment of the brick masonry reinforced block interlayer shear performance detection device of the present application;

[0019] Figure 2 is a shear test piece structure schematic diagram of an embodiment of the brick masonry reinforced block interlayer shear performance detection device of the present application;

[0020] Figure 3 is a load distribution beam structure schematic diagram of an embodiment of the brick masonry reinforced block interlayer shear performance detection device of the present application;

[0021] Figure 4 is a support base structure schematic diagram of an embodiment of the brick masonry reinforced block interlayer shear performance detection device of the present application.

[0022] REFERENCE NUMERALS

[0023] 1, jack; 2, load distribution beam; 3, shear test piece; 4, support base; 5, reinforced plaster layer; 6, brick; 7, through joint; 8, fixing screw; 9, support steel beam; 10, loading leg; 11, notched support; 12, fixed base plate; 13, fixed bolt. DETAILED DESCRIPTION

[0024] The technical scheme of the present application will be further described in detail below with reference to the accompanying drawings and examples.

[0025] Unless otherwise defined, technical terms or scientific terms used in the present application shall have the ordinary meaning as understood by a person of ordinary skill in the art to which the present application pertains. The terms "first", "second", and similar terms used in the present application do not denote any order, quantity, or importance, but are used to distinguish different components. The terms "comprise", "include" or "contain" and similar terms are intended to cover a non-exclusive inclusion, such that elements or objects not listed in the list following the term are not excluded from the scope of the present application. The terms "connected" or "coupled" and similar terms are not limited to physical or mechanical connections or couplings, but can include electrical connections or couplings, whether direct or indirect. The terms "upper", "lower", "left", "right", and the like are used only to indicate relative positions, and when the absolute positions of the described objects are changed, the relative positions may also be changed accordingly.

[0026] As shown in Figures 1 to 2 A device for detecting the interlayer shear performance of a brick masonry reinforced block layer, comprising a shear test piece 3, the shear test piece 3 being composed of a reinforced plaster layer 5, a brick 6, and a through joint 7, the number of the bricks 6 being three, the three bricks 6 being arranged vertically and horizontally in parallel, the through joint 7 being arranged between adjacent bricks 6, and the opposite sides of the bricks 6 each being provided with the reinforced plaster layer 5, wherein the through joint 7 is provided with a different thickness of joint reinforcement on the side in contact with the reinforced plaster layer 5. The joint is filled with the same material as the reinforced plaster layer 5. When the shear test piece 3 is made, the three bricks 6 are overlapped through the through joint 7, and joints of different depths are reserved according to requirements. After the connection strength of the through joint 7 is sufficient, the reinforced plaster layer 5 is filled in the form of jointing and plastering to form the main body of the shear test piece 3.

[0027] As shown in Figure 4 A support base 4 is arranged below the shear test piece 3, the support base 4 comprising a notched support 11, a fixed bottom plate 12, and a fixed bolt 13. The notched support 11 comprises two notched support members made of steel, which are L-shaped and symmetrically arranged at the two ends of the upper surface of the fixed bottom plate 12. The two notched support members are arranged on the upper surface of the fixed bottom plate 12 through the fixed bolt 13. The horizontal distance between the inner surfaces of the upper ends of the two notched support members corresponds to the size of the shear test piece 3, the thickness of the inner notches of the two notched support members corresponds to the thickness of the reinforced plaster layer 5, and the horizontal distance between the inner surfaces of the lower ends of the two notched support members corresponds to the size of the brick 6. The device uses two notched support members to form the notched support 11, which can effectively constrain the support at the bottom of the shear test piece 3, and the notched part provides horizontal constraint to avoid sliding failure, thereby improving the reliability of the test.

[0028] As shown in Figure 3As shown, the shear test piece 3 is provided with a load distribution beam 2, the load distribution beam 2 comprises a support steel beam 9, a loading leg 10, a fixing screw 8, the loading leg 10 is fixed on the lower surface of the support steel beam 9 through the fixing screw 8, the length of the support steel beam 9 is generally the same as the length of the test piece, and the position of the loading leg 10 is changed by screwing the fixing bolt 13 into the screw holes at different positions of the support steel beam 9. The position of the loading leg 10 corresponds to the position of the brick 6 in the shear test piece 3, the width between adjacent loading legs 10 is the same as the width of the through joint 7 in the shear test piece 3, the device considers the effect of different joint depths, and the vertical load is applied by adjusting the position of the loading leg 10. During the test process, the influence of the protruding joint at the connection between the through joint 7 and the reinforced plaster layer 5 on the accuracy of the shear load measurement can be effectively avoided, and the bolt connection mode improves the application range of such a loading device. The loading device can be reasonably adjusted according to the width of the through joint 7.

[0029] The load distribution beam 2 is provided with a jack 1, and the jack 1 is vertically arranged above the support beam.

[0030] Working principle: according to the test piece and design requirements, three bricks 6 are used to build a shear test piece 3, and the joint depth is reserved. After curing, the test piece is cleaned on both sides and the reinforced plaster layer 5 is applied. According to the size of the shear test piece 3, the distance between the notch supports 11 is adjusted to ensure that the test piece is just clamped into the notch supports 11, and the fixing bolt 13 is tightened. Then, the distance between the loading legs 10 is determined according to the thickness of the through joint 7, and the adjusted loading legs 10 are fixed on the lower surface of the support beam. The jack 1 and related measurement design are arranged, and the related test of the plaster shear performance can be carried out.

[0031] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can still be modified or replaced by equivalents, and these modifications or replacements cannot make the modified technical solutions deviate from the spirit and scope of the technical solutions of the present application.

Claims

1. A device for testing the interlayer shear performance of brickwork reinforcement blocks, characterised in that: Including the shearing test piece, the shearing test piece is composed of reinforced plaster layer, brick, through joint, the brick is connected through the through joint, the reinforced plaster layer is arranged on the outer surface of the brick, the shearing test piece is provided with support base below, the support base includes notch support, fixed bottom plate, the notch support is arranged on the upper surface of the fixed bottom plate, the shearing test piece is provided with load distribution beam above, the load distribution beam is provided with jack above.

2. The device for testing the interlayer shear performance of a brick masonry reinforced block according to claim 1, characterized in that: The number of the brick is three, three the brick is vertically parallel distribution, the through joint is arranged between adjacent the brick, the relative two side outer surfaces of the brick are all equipped with the reinforced plaster layer, and the reinforced plaster layer is connected with the through joint by pointing and plastering.

3. The device for testing the interlayer shear performance of a brick masonry reinforced block layer according to claim 1, characterized in that: The notch support includes two notch supports, the notch support is L-shaped, two the notch support is symmetrically arranged on the upper surface of the fixed bottom plate, and two the notch support is arranged on the upper surface of the fixed bottom plate by fixed bolt.

4. The device for testing the interlayer shear performance of a brick masonry reinforced block according to claim 3, characterized in that: The horizontal distance of the inner surface of the upper end of two the notch support corresponds to the size of the shearing test piece, the thickness of the inner side notch of two the notch support corresponds to the thickness of the reinforced plaster layer, and the horizontal distance of the inner surface of the lower end of two the notch support corresponds to the size of the brick.

5. The device for testing the interlayer shear performance of a brick masonry reinforced block layer according to claim 4, characterized in that: The load distribution beam includes support steel beam, loading leg, fixed screw, the loading leg is fixedly arranged on the lower surface of the support steel beam by the fixed screw, and the loading leg corresponds to the position of the brick.

6. The device for testing the interlayer shear performance of a brick masonry reinforced block layer according to claim 5, characterized in that: The jack is vertically arranged above the support steel beam, and the lower surface of the jack is in contact with the upper surface of the support steel beam.

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