A performance evaluation device for a concrete slab reinforced with uhpc
Patent Information
- Application Number
- CN202522303420.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-30
- Publication Date
- 2026-09-25
- Estimated Expiration
- 2035-10-30
AI Technical Summary
[0003]在对混凝土板进行检测时需要把混凝土板放置在装置的底座上，然后启动液压机器进行检测，但在检测一个方向后需要搬动混凝土板进行另一方向的检测，操作起来过于繁琐，因此，本领域技术人员提供了一种基于UHPC加固混凝土板的性能评估装置，以解决上述背景技术中提出的问题
1、本实用新型提出的一种基于UHPC加固混凝土板的性能评估装置，把混凝土板放置在支撑板端面的托块上，支撑板带动混凝土板移动到顶块下方，液压执行器会带动柱挤压块向下移动对混凝土板实现挤压，通过液压执行器和压力传感器得到下压的力度，从而可以判断力度是否处于规定的数值范围内，方便检测混凝土板腹板的强度。
Smart Images
Figure CN224802831U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of performance evaluation device technology, and in particular to a performance evaluation device based on UHPC reinforced concrete slab. Background Technology
[0002] In the field of civil engineering, reinforced concrete slabs are widely used load-bearing components in structures such as bridges, floor slabs, and roof slabs. During long-term use, due to factors such as increased load, material aging, environmental erosion, or updated design standards, many concrete slabs will experience problems such as insufficient load-bearing capacity, decreased stiffness, and excessive cracks. However, using UHPC layers to reinforce concrete slabs can significantly improve their bending and shear bearing capacity and stiffness, and effectively inhibit crack development.
[0003] When testing concrete slabs, the slabs need to be placed on the base of the device before the hydraulic machine is started for testing. However, after testing one direction, the slabs need to be moved to test the other direction, which is too cumbersome. Therefore, those skilled in the art have provided a performance evaluation device for reinforced concrete slabs based on UHPC to solve the problems mentioned in the background art. Utility Model Content
[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a performance evaluation device for UHPC-reinforced concrete slabs. The device uses a hydraulic actuator and pressure sensor to easily determine the downward pressure, and the clamping detection at different angles makes the concrete slab inspection more comprehensive and convenient.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a performance evaluation device for UHPC-reinforced concrete slabs, comprising a base, a top block, and two electric telescopic rods. A support plate is provided on the end face of the base, and two pressure sensors are provided on the end face of the support plate. Each pressure sensor end face is provided with a support block. Two support shells are provided on the end face of the base, and transverse clamping plates are provided on the inner walls of each of the two support shells. Transverse wedges are provided on the end faces of each of the two transverse clamping plates. A main extrusion block is provided on the end face of the top block, and auxiliary extrusion blocks are provided at the output ends of each of the two electric telescopic rods. A hydraulic actuator is connected to the top block, and a vertical clamping mechanism is provided on the outer end faces of each of the two support shells. The two vertical clamping mechanisms each include two movable shells, and each of the two movable shells has two vertical clamping plates on its inner wall. Each of the four vertical clamping plates has a vertical wedge on its end face. Furthermore, the base end face is provided with a housing, the housing end face is provided with a first motor, and the base end face is provided with a moving groove.
[0006] Furthermore, the inner wall of the movable groove has two side grooves, and each of the two side grooves is provided with a movable lead screw. The first motor is connected to the two movable lead screws via a belt.
[0007] Furthermore, the end face of the support plate is provided with a movable block, the movable block is disposed inside the movable groove, and the two movable lead screws are threaded on the inner wall of the movable block.
[0008] Furthermore, the base end face is provided with an upper frame, the inner wall of the upper frame is provided with a top groove, the top block is provided inside the top groove, the end face of the top block is provided with two inner grooves, the two electric telescopic rods and the two auxiliary extrusion blocks are respectively provided inside the two inner grooves, and the hydraulic actuator is provided on the end face of the upper frame.
[0009] Furthermore, a double-ended lead screw is provided between the two support shells, and two transverse clamping plates are provided at the outer end of the double-ended lead screw. A second motor is provided on the end face of one of the two support shells, and the second motor is connected to the double-ended lead screw.
[0010] Furthermore, each of the two movable shells has two semi-threaded screws on its inner wall, and the four semi-threaded screws are respectively installed on the inner walls of the four vertical clamping plates. Each of the two movable shells has a third motor on its end face.
[0011] Furthermore, each of the two movable housings is provided with a connecting rod inside, and the two connecting rods are respectively connected to four semi-threaded screws via belts. The two third motors are respectively connected to the two connecting rods, and the two movable housings are respectively connected to two transverse clamping plates.
[0012] This utility model has the following beneficial effects: 1. This utility model proposes a performance evaluation device for UHPC-reinforced concrete slabs. The concrete slab is placed on a support block on the end face of a support plate. The support plate moves the concrete slab below the top block. The hydraulic actuator moves the column extrusion block downward to extrude pressure on the concrete slab. The downward pressure force is obtained through the hydraulic actuator and pressure sensor, thereby determining whether the force is within the specified range, which facilitates the testing of the strength of the web of the concrete slab.
[0013] 2. The present invention proposes a performance evaluation device for reinforced concrete slabs based on UHPC. The transverse clamping plate can clamp the edge of the web of the concrete slab through transverse wedges. The strength of the web edge can be detected by the conical transverse wedges. Moreover, the vertical clamping plate in the vertical clamping mechanism will drive the vertical wedges to clamp the top and bottom plates of the concrete slab, thereby detecting the strength of the top and bottom plates, making the concrete slab test more comprehensive and more convenient. Attached Figure Description
[0014] Figure 1 This is an axonometric view of the present invention; Figure 2 This is a side sectional axial view of the present invention; Figure 3 This is a cross-sectional axial view of the present invention; Figure 4 This is an isometric view of the vertical clamping mechanism of this utility model; Figure 5 This is a side sectional axial view of the vertical clamping mechanism of this utility model.
[0015] Legend: 1. Vertical clamping mechanism; 2. Base; 3. Support plate; 4. Pressure sensor; 5. Support block; 6. First motor; 7. Housing; 8. Moving slot; 9. Side slot; 10. Moving lead screw; 11. Upper frame; 12. Hydraulic actuator; 13. Second motor; 14. Moving block; 15. Top slot; 16. Inner slot; 17. Auxiliary extrusion block; 18. Electric telescopic rod; 19. Top block; 20. Main extrusion block; 21. Horizontal clamping plate; 22. Horizontal wedge; 23. Support housing; 24. Double-ended lead screw; 101. Moving housing; 102. Vertical clamping plate; 103. Vertical wedge; 104. Semi-threaded lead screw; 105. Third motor; 106. Connecting rod. Detailed Implementation
[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0017] Example 1, referring to Figures 1 to 4 This utility model provides an embodiment of a performance evaluation device for UHPC-reinforced concrete slabs, comprising a base 2, a top block 19, and two electric telescopic rods 18. A support plate 3 is provided on the end face of the base 2, and two pressure sensors 4 are provided on the end face of the support plate 3. Each pressure sensor 4 has a support block 5 on its end face. Two support shells 23 are provided on the end face of the base 2, and transverse clamping plates 21 are provided on the inner walls of each of the two support shells 23. Transverse wedges 22 are provided on the end faces of each of the two transverse clamping plates 21. A main extrusion block 20 is provided on the end face of the top block 19. An auxiliary extrusion block 17 is provided on the output ends of each of the two electric telescopic rods 18. A hydraulic actuator 12 is connected to the top block 19. A vertical clamping mechanism 1 is provided on the outer end face of each of the two support shells 23.
[0018] Specifically, the support plate 3 is slidably mounted on the upper surface of the base 2, two pressure sensors 4 are embedded in the front and rear sides of the upper surface of the support plate 3, the support block 5 is fixedly mounted on the upper surface of the pressure sensor 4, two support shells 23 are respectively fixedly mounted on the rear side of the two sides of the base 2, the transverse clamping plate 21 is slidably mounted on the inner wall of the support shell 23, two transverse wedges 22 are respectively fixedly mounted on the upper side of the opposite side of the two transverse clamping plates 21, the main extrusion block 20 is fixedly mounted in the middle of the lower surface of the top block 19, and two vertical clamping mechanisms 1 are respectively slidably mounted on the outer surface of the two support shells 23.
[0019] Furthermore, a housing 7 is provided on the end face of the base 2, and a first motor 6 is provided on the end face of the housing 7. A moving groove 8 is provided on the end face of the base 2, and two side grooves 9 are provided on the inner wall of the moving groove 8. A moving screw 10 is provided on the inner wall of each of the two side grooves 9. The first motor 6 is connected to the two moving screws 10 via a belt. A moving block 14 is provided on the end face of the support plate 3, and the moving block 14 is located inside the moving groove 8. The two moving screws 10 are threaded onto the inner wall of the moving block 14. An upper frame 11 is provided on the end face of the base 2, and the inner wall of the upper frame 11... A top groove 15 is provided, and a top block 19 is set inside the top groove 15. Two inner grooves 16 are opened on the end face of the top block 19. Two electric telescopic rods 18 and two auxiliary extrusion blocks 17 are respectively set inside the two inner grooves 16. A hydraulic actuator 12 is set on the end face of the upper frame 11. A double-headed screw 24 is set between the two support shells 23. Two transverse clamping plates 21 are set on the outer end of the double-headed screw 24. A second motor 13 is set on the end face of one of the two support shells 23. The second motor 13 is connected to the double-headed screw 24.
[0020] Specifically, the outer casing 7 is fixedly mounted on the upper side of the front end face of the base 2, the first motor 6 is fixedly mounted in the middle of the front end face of the outer casing 7, a pulley is provided inside the outer casing 7, the pulley is connected to the moving screw 10, the moving groove 8 is opened in the middle of the upper end face of the base 2, two side grooves 9 are respectively opened in the middle of the inner walls on both sides of the moving groove 8, the two moving screws 10 are respectively rotatably mounted on the inner walls of the two side grooves 9, the moving block 14 is slidably mounted inside the moving groove 8, the support plate 3 is fixedly mounted on the upper end face of the moving block 14, the upper frame 11 is fixedly mounted on the rear side of the upper end face of the base 2, the top groove 15 is opened in the inner top surface of the upper frame 11, and the top block 19 is slidably mounted in the top groove 15. Inside the top block 19, two inner grooves 16 are respectively located on the front and rear sides of the lower end face of the top block 19. Two electric telescopic rods 18 are respectively fixedly installed in the middle of the top surface of the two inner grooves 16. Two auxiliary extrusion blocks 17 are respectively slidably installed on the inner wall of the two inner grooves 16. The hydraulic actuator 12 is fixedly installed on the upper end face of the upper frame 11. The output end of the hydraulic actuator 12 is fixedly installed on the upper end face of the top block 19. The double-headed screw 24 has threads on both outer end faces. The transverse clamping plate 21 is threaded onto the threads. The second motor 13 is fixedly installed on one side end face of the support shell 23 located on one side. The output end of the second motor 13 is fixedly connected to the double-headed screw 24.
[0021] Example 2, refer to Figures 4 to 5 One embodiment of this utility model is provided: two vertical clamping mechanisms 1 include two movable shells 101, each of the inner walls of the two movable shells 101 is provided with two vertical clamping plates 102, and each of the four vertical clamping plates 102 is provided with a vertical wedge 103 on its end face.
[0022] Specifically, two vertical clamping plates 102 are slidably disposed on the front and rear sides of the inner wall of the movable shell 101, respectively, and two vertical wedges 103 are fixedly disposed on the opposite end faces of the two vertical clamping plates 102.
[0023] Furthermore, each of the two movable shells 101 has two semi-threaded screws 104 on its inner wall, and four semi-threaded screws 104 are respectively installed on the inner walls of the four vertical clamping plates 102. Each of the two movable shells 101 has a third motor 105 on its end face, and each of the two movable shells 101 has a connecting rod 106 inside. The two connecting rods 106 are respectively connected to the four semi-threaded screws 104 via belts. The two third motors 105 are respectively connected to the two connecting rods 106. The two movable shells 101 are respectively connected to the two horizontal clamping plates 21.
[0024] Specifically, two semi-threaded screws 104 are rotatably mounted on the front inner wall and rear inner wall of the movable housing 101, respectively. The vertical clamping plate 102 is threaded onto the thread on the outer end face of the semi-threaded screws 104. The third motor 105 is fixedly mounted on the rear end face of the lower side of the movable housing 101. The connecting rod 106 is rotatably mounted on the inner wall of the lower side of the movable housing 101. The output end of the third motor 105 is fixedly mounted on the rear end face of the connecting rod 106.
[0025] Working principle: The concrete slab is placed on the support block 5. The first motor 6 is started to drive the moving screw 10 to rotate. The rotating moving screw 10 will drive the support plate 3 to slide under the upper frame 11 through the moving block 14. After the concrete slab enters under the upper frame 11, the hydraulic actuator 12 is started to push the top block 19, causing the top block 19 to descend and compress the end face of the concrete slab through the main extrusion block 20, thereby detecting the strength of the web of the concrete slab. At the same time, the electric telescopic rod 18 inside the inner groove 16 can be started to push the auxiliary extrusion block 17, so that the auxiliary extrusion block 17 extends and is flush with the main extrusion block 20, thereby increasing the downward pressure area and thus detecting the large-area extrusion of the web of the concrete slab. To assess the performance, the second motor 13 is activated, driving the double-ended lead screw 24 to rotate. The rotating lead screw 24 causes the transverse clamping plate 21 to move towards the concrete slab, clamping the middle section of the concrete slab with wedges, thus allowing for separate testing of the middle section. The moving transverse clamping plate 21 also causes the moving shell 101 to move synchronously, protruding from the concrete slab by one section, placing the vertical clamping plate 102 within the clamping area. The third motor 105 is activated, driving the connecting rod 106 to rotate. The rotating connecting rod 106 causes the semi-threaded lead screw 104 to rotate, thereby causing the vertical clamping plate 102 to drive the vertical wedges 103 to clamp and test the top and bottom plates of the concrete slab.
[0026] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A performance evaluation device for UHPC-reinforced concrete slabs, comprising a base (2), a top block (19), and two electric telescopic rods (18), characterized in that: The base (2) is provided with a support plate (3) on its end face. The support plate (3) is provided with two pressure sensors (4) on its end face. The two pressure sensors (4) are provided with a support block (5) on their end faces. The base (2) is provided with two support shells (23) on its end face. The inner walls of the two support shells (23) are provided with transverse clamping plates (21). The end faces of the two transverse clamping plates (21) are provided with transverse wedges (22). The end face of the top block (19) is provided with a main extrusion block (20). The output ends of the two electric telescopic rods (18) are provided with auxiliary extrusion blocks (17). The top block (19) is connected to a hydraulic actuator (12). The outer end faces of the two support shells (23) are provided with a vertical clamping mechanism (1). The two vertical clamping mechanisms (1) include two movable shells (101), and each of the two movable shells (101) has two vertical clamping plates (102) on its inner wall, and each of the four vertical clamping plates (102) has a vertical wedge (103) on its end face.
2. The performance evaluation device for UHPC-reinforced concrete slabs according to claim 1, characterized in that: The base (2) has a housing (7) on its end face, a first motor (6) on its end face, and a moving groove (8) on its end face.
3. The performance evaluation device for UHPC-reinforced concrete slabs according to claim 2, characterized in that: The inner wall of the moving groove (8) has two side grooves (9), and the inner walls of the two side grooves (9) are provided with moving screws (10). The first motor (6) is connected to the two moving screws (10) via a belt.
4. The performance evaluation device for UHPC-reinforced concrete slabs according to claim 3, characterized in that: The end face of the support plate (3) is provided with a movable block (14), the movable block (14) is located inside the movable groove (8), and the two movable screws (10) are threaded on the inner wall of the movable block (14).
5. The performance evaluation device for UHPC-reinforced concrete slabs according to claim 4, characterized in that: The base (2) has an upper frame (11) on its end face. The upper frame (11) has a top groove (15) on its inner wall. The top block (19) is located inside the top groove (15). The top block (19) has two inner grooves (16) on its end face. The two electric telescopic rods (18) and the two auxiliary extrusion blocks (17) are respectively located inside the two inner grooves (16). The hydraulic actuator (12) is located on the end face of the upper frame (11).
6. The performance evaluation device for UHPC-reinforced concrete slabs according to claim 5, characterized in that: A double-ended lead screw (24) is provided between the two support shells (23), and two transverse clamping plates (21) are provided at the outer end of the double-ended lead screw (24). A second motor (13) is provided on the end face of one of the two support shells (23), and the second motor (13) is connected to the double-ended lead screw (24).
7. The performance evaluation device for UHPC-reinforced concrete slabs according to claim 6, characterized in that: Two semi-threaded screws (104) are provided on the inner walls of the two movable shells (101), and four semi-threaded screws (104) are respectively provided on the inner walls of the four vertical clamping plates (102). A third motor (105) is provided on the end face of the two movable shells (101).
8. The performance evaluation device for UHPC-reinforced concrete slabs according to claim 7, characterized in that: Both of the movable housings (101) are provided with connecting rods (106) inside. The two connecting rods (106) are respectively connected to four semi-threaded screws (104) via belts. The two third motors (105) are respectively connected to the two connecting rods (106). The two movable housings (101) are respectively connected to two transverse clamping plates (21).