A device for detecting the shear strength of a perforated brick wall body masonry

Abstract

This application relates to a device for testing the shear strength of porous brick masonry walls, belonging to the technical field of building construction testing devices. The wall has a connecting hole and includes a testing tube, a horizontally positioned base, a positioning component mounted on the base, a testing component mounted on the base, a sensing component mounted on the base, and a transmission component mounted on the base. The wall is placed horizontally on the base, and the testing tube is vertically inserted into the connecting hole, abutting against the side wall of the connecting hole. The top and bottom ends of the testing tube are closed structures, and the testing tube has deformation capability. The positioning component fixes the position of the wall on the base, the transmission component applies a vertically downward and uniformly increasing pressure to the wall, the testing component detects the degree of deformation of the testing tube, and the sensing component detects the pressure applied to the wall by the transmission component and controls the working state of the transmission component based on the degree of deformation of the testing tube. This application can improve the testing efficiency of the shear strength of walls.

Description

Technical Field

[0001] This application relates to the technical field of building construction testing devices, and in particular to a device for testing the shear strength of porous brick masonry. Background Technology

[0002] Porous brick masonry directly bears lateral horizontal loads, and masonry in earthquake-resistant areas is subjected to horizontal seismic loads, both of which require the masonry to have corresponding shear strength.

[0003] In the current national standard GB / T50315-2011, "Technical Standard for On-site Testing of Masonry Engineering", the methods for on-site testing of the shear strength of masonry include the in-situ single shear method and the in-situ double shear method. The in-situ single shear method is suitable for testing the shear strength of various types of brick masonry, while the in-situ double shear method is suitable for testing the shear strength of sintered common brick and sintered porous brick masonry.

[0004] In the aforementioned process of testing the shear strength of walls, when a wall fractures, the construction worker judges whether the shear strength test has been completed by the sound emitted when the wall fractures. However, in noisy construction environments or when the sound emitted by the wall fracture is low, it is not conducive to the construction worker judging whether the shear strength test has been completed. As a result, the construction worker can only judge that the shear strength test has been completed after observing obvious fracture phenomena, which leads to low efficiency in the shear strength testing of walls. Summary of the Invention

[0005] To improve the efficiency of testing the shear strength of walls, this application provides a device for testing the shear strength of porous brick masonry walls.

[0006] This application provides a device for testing the shear strength of porous brick masonry, which adopts the following technical solution:

[0007] A device for testing the shear strength of porous brick masonry includes a detection tube, a horizontally positioned base, a positioning component on the base, a detection component on the base, a sensing component on the base, and a transmission component on the base. The wall is placed horizontally on the base, and the detection tube is vertically inserted into the connecting hole and abuts against the side wall of the connecting hole. The top and bottom ends of the detection tube are closed structures, and the detection tube has deformation capability. The positioning component is used to fix the position of the wall on the base, the transmission component is used to apply a vertically downward and uniformly increasing pressure to the wall, the detection component is used to detect the degree of deformation of the detection tube, and the sensing component is used to detect the pressure applied to the wall by the transmission component and control the working state of the transmission component according to the degree of deformation of the detection tube.

[0008] By adopting the above technical solution, the transmission component, detection component, and sensing component are activated. The transmission component applies a vertically downward and uniformly increasing pressure to the wall, causing the wall to deform and fracture. When the wall begins to deform, it squeezes the detection tube located in the connecting hole, causing the detection tube to deform as well. The degree of deformation of the detection tube is detected by the detection component, allowing the construction worker to determine whether the wall has fractured based on the degree of deformation of the detection tube, thereby improving the efficiency of wall shear strength testing.

[0009] Optionally, the detection assembly includes a measuring tube mounted on a base and a connecting tube connecting the measuring tube and the detection tube. Both ends of the measuring tube are closed structures. The connecting tube is inclined and its top end is close to the detection tube. Water is pre-filled in the detection tube, and the water level in the detection tube is flush with the connection between the connecting tube and the detection tube. Both the connecting tube and the measuring tube are made of transparent material.

[0010] By adopting the above technical solution, when the detection tube is squeezed and deformed, the water at the top of the detection tube flows into the measuring tube through the connecting pipe. The construction worker can judge whether the wall has cracked by observing the flow of water.

[0011] Optionally, the transmission assembly includes a first cylinder vertically positioned above the wall and a push plate vertically positioned between the first cylinder and the wall; the fixed end of the first cylinder is connected to the base, and the movable end of the first cylinder is fixedly connected to the push plate.

[0012] By adopting the above technical solution, when testing the shear strength of the wall, the first cylinder is activated. The moving end of the first cylinder drives the push plate to move vertically downward, so that the push plate exerts vertical downward pressure on the wall. Furthermore, by controlling the extension and retraction state of the first cylinder, the push plate exerts vertical downward pressure on the wall in a uniformly increasing manner.

[0013] Optionally, the sensing assembly includes a pressure sensor plate fixedly mounted on the bottom surface of the push plate, a liquid level sensor fixedly mounted inside the measuring tube, and a controller mounted on the base. The pressure sensor is used to detect the pressure applied to the wall by the first cylinder and transmit the corresponding pressure signal; the liquid level sensor is used to detect the liquid level information inside the measuring tube and transmit the corresponding liquid level signal; the controller is electrically connected to the pressure sensor, the liquid level sensor, and the first cylinder. The controller responds to the liquid level signal and controls the working state of the first cylinder, and the controller is used to record the liquid level signal and the pressure signal.

[0014] By adopting the above technical solution, when the push plate squeezes the wall, the pressure sensor transmits the pressure information generated by the push plate to the wall to the controller, and the liquid level sensor transmits the liquid level information in the measuring tube to the controller, so that the controller can record the degree of deformation of the wall and the corresponding pressure on the wall, which makes it convenient for the construction workers to test the shear strength of the wall.

[0015] Optionally, the positioning component includes two second cylinders, which are symmetrically arranged on both sides of the push plate in the thickness direction, and the length direction of the second cylinders is the same as the thickness direction of the push plate. The fixed end of the second cylinder is fixedly connected to the base, and the movable end of the second cylinder abuts against the wall.

[0016] By adopting the above technical solution, the movable end of the second cylinder is in close contact with the wall, thereby fixing the wall to the base under the action of the two movable ends of the second cylinder, reducing the possibility of the wall shaking, and the setting of the second cylinder allows walls of different sizes to be placed on the base.

[0017] Optionally, a baffle is vertically provided between the movable end of the second cylinder and the wall. The length direction of the baffle is perpendicular to the length direction of the second cylinder. The baffle is fixedly connected to the movable end of the second cylinder and abuts against the wall.

[0018] By adopting the above technical solution, the baffle can increase the contact area between the second cylinder and the wall, making the wall more stable on the base and further reducing the possibility of the wall shaking.

[0019] Optionally, four detection tubes are provided, which are symmetrically arranged on both sides of the push plate and are all located at the center of the wall.

[0020] By adopting the above technical solution, the fracture condition of the wall is comprehensively detected through detection tubes at four different locations, thereby improving the accuracy of the wall shear strength test.

[0021] Optionally, the water in the detection tube is red.

[0022] By adopting the above technical solution, the water in the detection pipe turns red, making it easier for the construction worker to observe the water flow. Furthermore, the construction worker can further determine the fracture condition of the wall by measuring the water level in the pipe.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. By setting up a transmission component, a detection component, and a sensing component, the transmission component applies a vertically downward and uniformly increasing pressure to the wall, causing the wall to deform. When the wall begins to deform, it squeezes the detection tube located in the connecting hole, causing the detection tube to deform as well. The detection component detects the degree of deformation of the detection tube, allowing the construction worker to determine whether the wall has fractured based on the degree of deformation of the detection tube, thereby improving the efficiency of wall shear strength testing.

[0025] 2. By setting up a positioning component, the movable end of the second cylinder is tightly abutted against the wall, thereby fixing the wall to the base under the abutting action of the movable ends of the two second cylinders, reducing the possibility of the wall shaking.

[0026] 3. By setting up a baffle, the contact area between the second cylinder and the wall can be increased, making the wall more stable on the base and further reducing the possibility of the wall shaking. Attached Figure Description

[0027] Figure 1 This is a structural schematic diagram of an embodiment of this application;

[0028] Figure 2 This is a cross-sectional view of an embodiment of this application;

[0029] Figure 3 This is a cross-sectional view of the liquid level sensor in an embodiment of this application.

[0030] Explanation of reference numerals in the attached drawings: 1. Wall; 11. Connecting hole; 2. Base; 21. Positioning groove; 22. Bracket; 3. Detection tube; 4. Positioning assembly; 41. Second cylinder; 42. Baffle; 5. Transmission assembly; 51. First cylinder; 52. Push plate; 6. Detection assembly; 61. Connecting tube; 62. Measuring tube; 7. Sensing assembly; 71. Pressure sensor; 72. Liquid level sensor; 73. Controller. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0032] This application discloses a device for testing the shear strength of porous brick masonry. (Refer to...) Figure 1 and Figure 2 A device for testing the shear strength of porous brick masonry includes a testing tube 3, a horizontally arranged base 2, a testing component 6 arranged on the base 2, a sensing component 7 arranged on the base 2, and a transmission component 5 arranged on the base 2. The wall 1 is placed horizontally on the base 2, and a plurality of connecting holes 11 are opened on the top surface of the wall 1. The testing tube 3 is vertically inserted into the connecting holes 11. The transmission component 5 is used to apply a vertically downward and uniformly increasing pressure to the wall 1. The testing component 6 is used to detect the degree of deformation of the testing tube 3. The sensing component 7 is used to detect the pressure applied to the wall 1 by the transmission component 5 and to control the working state of the transmission component 5 according to the degree of deformation of the testing tube 3.

[0033] Reference Figure 1 and Figure 2The base 2 has a rectangular cross-section, and the length direction of the wall 1 is the same as the length direction of the base 2. A positioning component 4 is provided on the base 2. The positioning component 4 includes two second cylinders 41 and a baffle 42 fixedly connected to the movable end of the second cylinders 41. The two second cylinders 41 are symmetrically arranged at both ends of the length direction of the wall 1, and the length direction of the second cylinders 41 is the same as the length direction of the base 2. The baffle 42 is vertically arranged, and the length direction of the baffle 42 is perpendicular to the width direction of the base 2. The side of the baffle 42 away from the second cylinders 41 is in close contact with the wall 1.

[0034] Reference Figure 1 and Figure 2 A bracket 22 is fixedly installed above the base 2. The transmission component 5 includes a first cylinder 51 vertically installed above the wall 1 and a push plate 52 vertically installed between the first cylinder 51 and the wall 1. The fixed end of the first cylinder 51 is fixedly connected to the bracket 22, and the movable end of the first cylinder 51 is fixedly connected to the push plate 52. The length direction of the push plate 52 is the same as the width direction of the wall 1.

[0035] Reference Figure 1 and Figure 2 The base 2 has a positioning groove 21 on its top surface, and there are four positioning grooves 21. The top and bottom of the detection tube 3 are closed structures. There are four detection tubes 3, which correspond one-to-one with the positioning grooves 21. The four detection tubes 3 are symmetrically arranged on both sides of the thickness direction of the push plate 52, and the detection tubes 3 are all located at the center of the wall 1. The bottom of the detection tubes 3 are all inserted into the corresponding positioning grooves 21 and abut against the side wall of the positioning grooves 21. The detection tubes 3 abut against the side wall of the connecting hole 11 and the detection tubes 3 have the ability to deform.

[0036] Reference Figure 1 and Figure 2 The detection component 6 includes four measuring tubes 62, which are located at the top corners of the top surface of the base 2. Each measuring tube 62 corresponds to a detection tube 3. The measuring tubes 62 are vertically arranged and have closed top and bottom ends. The measuring tubes 62 are fixedly connected to the base 2. A connecting tube 61 is inclined between the measuring tube 62 and the corresponding detection tube 3. The top end of the connecting tube 61 is connected to the top of the detection tube 3, and the bottom end of the connecting tube 61 is connected to the top of the measuring tube 62. Both the connecting tube 61 and the measuring tube 62 are made of transparent material. Water is pre-filled in the detection tube 3. The water level in the detection tube 3 is flush with the connection between the connecting tube 61 and the detection tube 3, and the water in the detection tube 3 is red.

[0037] Reference Figure 1 and Figure 2 The sensing component 7 includes a pressure sensing plate 71 fixedly mounted on the bottom surface of the push plate 52 and a controller 73 mounted on the base 2. The pressure sensor is used to detect the pressure applied by the first cylinder 51 to the wall 1 and transmit the corresponding pressure signal; see reference. Figure 1 and Figure 3 The sensing component 7 also includes four liquid level sensors 72, each corresponding to a measuring tube 62. The liquid level sensors 72 are fixedly installed inside the corresponding measuring tube 62. The liquid level sensors 72 are used to detect the liquid level information inside the measuring tube 62 and transmit the corresponding liquid level signal. The controller 73 is electrically connected to the pressure sensor, the liquid level sensors 72, and the first cylinder 51. The controller 73 responds to the liquid level signal and controls the working state of the first cylinder 51. The controller 73 is also used to record the liquid level signal and the pressure signal.

[0038] The implementation principle of the shear strength testing device for porous brick masonry in this application embodiment is as follows: When testing the shear strength of wall 1, firstly, wall 1 is placed horizontally on base 2, so that the length direction of wall 1 is the same as the length direction of base 2. Then, the second cylinder 41 is activated, so that wall 1 is in close contact with the two baffles 42. Then, the first cylinder 51, pressure sensor, liquid level sensor 72 and controller 73 are activated. The moving end of the first cylinder 51 drives the push plate 52 to move vertically downward, so that the push plate 52 exerts a vertically downward and uniformly increasing pressure on wall 1, so that wall 1 can break. During the process of deformation and fracture of wall 1, wall 1 exerts a squeezing effect on detection tube 3, so that water in detection tube 3 flows into measuring tube 62 through connecting pipe 61. The operator can judge whether wall 1 has broken by observing the flow of water.

[0039] When the push plate 52 presses against the wall 1, the pressure sensor transmits the pressure information generated by the push plate 52 on the wall 1 to the controller 73, and the liquid level sensor transmits the liquid level information in the measuring tube 62 to the controller 73. This allows the controller 73 to record the degree of deformation of the wall 1 and the corresponding pressure on the wall 1, so that the construction worker can know the relationship between the pressure on the wall 1 and the degree of deformation of the wall 1, which is convenient for the construction worker to test the shear strength of the wall 1.

[0040] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A device for testing the shear strength of porous brick masonry, wherein a connecting hole (11) is provided on the wall (1), characterized in that: The system includes a detection tube (3), a horizontally positioned base (2), a positioning component (4) on the base (2), a detection component (6) on the base (2), a sensing component (7) on the base (2), and a transmission component (5) on the base (2). The wall (1) is placed horizontally on the base (2), and the detection tube (3) is vertically inserted into the connecting hole (11) and abuts against the side wall of the connecting hole (11). The top and bottom ends of the detection tube (3) are closed structures, and the detection tube (3) has the ability to deform. The positioning component (4) is used to fix the position of the wall (1) on the base (2), the transmission component (5) is used to apply a vertically downward and uniformly increasing pressure to the wall (1), the detection component (6) is used to detect the degree of deformation of the detection tube (3), and the sensing component (7) is used to detect the pressure applied to the wall (1) by the transmission component (5) and control the working state of the transmission component (5) according to the degree of deformation of the detection tube (3). The detection component (6) includes a measuring tube (62) mounted on a base (2) and a connecting tube (61) connecting the measuring tube (62) and the detection tube (3). Both ends of the measuring tube (62) are closed structures. The connecting tube (61) is inclined and its top end is close to the detection tube (3). Water is pre-filled in the detection tube (3) and the water level in the detection tube (3) is flush with the connection between the connecting tube (61) and the detection tube (3). Both the connecting tube (61) and the measuring tube (62) are made of transparent material. The transmission assembly (5) includes a first cylinder (51) vertically above the wall (1) and a push plate (52) vertically disposed between the first cylinder (51) and the wall (1); the fixed end of the first cylinder (51) is connected to the base (2), and the movable end of the first cylinder (51) is fixedly connected to the push plate (52).

2. The device for testing the shear strength of porous brick masonry according to claim 1, characterized in that: The sensing component (7) includes a pressure sensor (71) fixedly mounted on the bottom surface of the push plate (52), a liquid level sensor (72) fixedly mounted in the measuring tube (62), and a controller (73) mounted on the base (2). The pressure sensor is used to detect the pressure applied by the first cylinder (51) to the wall (1) and transmit the corresponding pressure signal; the liquid level sensor (72) is used to detect the liquid level information in the measuring tube (62) and transmit the corresponding liquid level signal; the controller (73) is electrically connected to the pressure sensor, the liquid level sensor (72), and the first cylinder (51). The controller (73) responds to the liquid level signal and controls the working state of the first cylinder (51). The controller (73) is also used to record the liquid level signal and the pressure signal.

3. The shear strength testing device for porous brick masonry according to claim 2, characterized in that: The positioning component (4) includes two second cylinders (41). The two second cylinders (41) are symmetrically arranged on both sides of the thickness direction of the push plate (52), and the length direction of the second cylinders (41) is the same as the thickness direction of the push plate (52). The fixed end of the second cylinder (41) is fixedly connected to the base (2), and the movable end of the second cylinder (41) abuts against the wall (1).

4. The shear strength testing device for porous brick masonry according to claim 3, characterized in that: A baffle (42) is vertically installed between the movable end of the second cylinder (41) and the wall (1). The length direction of the baffle (42) is perpendicular to the length direction of the second cylinder (41). The baffle (42) is fixedly connected to the movable end of the second cylinder (41) and abuts against the wall (1).

5. The device for testing the shear strength of porous brick masonry according to claim 1, characterized in that: The detection tube (3) is provided in four parts. The four detection tubes (3) are symmetrically arranged on both sides of the push plate (52) and are all located at the center of the wall (1).

6. The shear strength testing device for porous brick masonry according to claim 1, characterized in that: The water in the detection tube (3) is red.

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