Assembled supports for testing the bending performance of reinforced concrete slabs

Abstract

The present invention discloses an assembly support for testing the bending performance of reinforced concrete slabs, comprising a roller, a pad, an anti-roll structure and a positioning structure. The pad comprises an upper pad and a lower pad, and the upper pad and the lower pad are respectively located on the upper and lower sides of the roller and are positioned opposite each other. The upper pad and the lower pad are both provided with a plurality of sockets, and the distances between the plurality of sockets and the roller are different. The anti-roll structure comprises an anti-roll bar and an insert rod. The anti-roll bar is parallel to the roller, and the anti-roll bar is used to limit the rolling of the roller. The insert rod is used to be inserted into the insert rod, and the insert rod is connected to the anti-roll bar. The anti-roll structure comprises a plurality of anti-roll structures, which are respectively located on both sides of the roller to prevent the roller from rolling to both sides. The positioning structure is connected to the insert rod to fix the insert rod in the insert rod. Compared with the prior art, the assembly support of the present invention can adapt to reinforced concrete slabs of different sizes and shapes.

Description

Technical Field

[0001] The invention relates to the technical field of reinforced concrete slab bending performance testing, in particular to an assembly support for reinforced concrete slab bending performance testing. Background Art

[0002] With advances in science and technology, a large number of new engineering materials have been developed in the civil engineering field to improve the performance of concrete, such as new concrete admixtures and additives. In large-scale reinforced concrete structures, flexural performance testing of reinforced concrete slabs containing these new admixtures and additives can help understand their impact on the flexural performance of the structure. However, due to the varying sizes and shapes of reinforced concrete slabs, a large number of custom test supports are required, which not only increases testing costs but also hinders the testing schedule. Summary of the Invention

[0003] The purpose of the present invention is to provide an assembly support for testing the bending performance of reinforced concrete slabs, so as to adapt to reinforced concrete slabs of different sizes and shapes.

[0004] To achieve the above object, the present invention provides the following solutions:

[0005] The present invention discloses an assembly support for testing the bending performance of reinforced concrete slabs, comprising:

[0006] roller;

[0007] A pad, comprising an upper pad and a lower pad, the upper pad and the lower pad being located on the upper and lower sides of the roller respectively and facing each other; the upper pad and the lower pad are both provided with a plurality of sockets, and the plurality of sockets are at different distances from the roller;

[0008] An anti-roll structure, comprising an anti-roll bar and an insertion rod; the anti-roll bar is parallel to the roller and is used to limit the rolling of the roller; the insertion rod is used to be inserted into the insertion hole and is connected to the anti-roll bar; the anti-roll structure includes multiple anti-roll structures and is respectively located on both sides of the roller to prevent the roller from rolling to both sides;

[0009] A positioning structure is connected to the insertion rod to fix the insertion rod in the insertion hole.

[0010] Preferably, the roller includes a roller, a first core shaft and a first locking piece; the roller includes multiple and coaxial rollers, the first core shaft passes through the multiple rollers in sequence, the first locking piece is fixed at both ends of the first core shaft, and the first locking piece is offset against the roller limit near the end of the first core shaft.

[0011] Preferably, the upper pad and the lower pad are both formed by detachably splicing a plurality of splicing plates.

[0012] Preferably, two adjacent splicing plates are spliced ​​and connected by sliding fit between the protrusion and the groove.

[0013] Preferably, the positioning structure includes a second core shaft and a second locking member; the second core shaft is parallel to the roller, the second core shaft passes through the multiple splicing plates and the insertion rod in each splicing plate, and second locking members are fixed at both ends of the second core shaft, and the second locking member is offset against the splicing plate limiter near the end of the second core shaft.

[0014] Preferably, the insertion rod is perpendicular to the anti-roll bar and fixed to the middle portion of the anti-roll bar.

[0015] Preferably, the first locking member is threadedly connected to the first core shaft, and the second locking member is threadedly connected to the second core shaft.

[0016] Preferably, the first mandrel and the second mandrel are both steel bars.

[0017] Preferably, the protrusion is a T-shaped protrusion, and the groove is a T-shaped groove.

[0018] Preferably, the assembly support for testing the bending performance of reinforced concrete slabs is entirely made of stainless steel.

[0019] Compared with the prior art, the present invention has achieved the following technical effects:

[0020] In the present invention, because both the upper and lower pads are provided with multiple insertion holes at varying distances from the rollers, the position of the anti-roll structure can be adjusted by inserting rods into the insertion holes at different locations to accommodate reinforced concrete slabs of varying sizes and shapes. In a preferred embodiment of the present invention, the lengths of the pads and rollers are adjustable, further enhancing the adaptability of the assembly support. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 This is a structural schematic diagram of an assembly support for testing the bending performance of reinforced concrete slabs according to an embodiment of the present invention;

[0023] Figure 2Schematic diagram of another structure of an assembly support for testing the bending performance of reinforced concrete slabs according to an embodiment of the present invention;

[0024] Figure 3 A schematic structural diagram of the first splicing plate;

[0025] Figure 4 A schematic structural diagram of the second splicing plate;

[0026] Figure 5 A schematic structural diagram of the third splicing plate;

[0027] Figure 6 is a schematic diagram of the structure of the anti-roll structure;

[0028] Figure 7 It is a schematic diagram of the structure after the anti-roll structure and the splicing plate are combined;

[0029] Figure 8 It is a schematic diagram of the structure after multiple anti-roll structures and multiple splicing plates are combined;

[0030] Figure 9 Schematic diagram of the structure of the first core shaft;

[0031] Figure 10 Schematic diagram of the structure of the drum;

[0032] Figure 11 Schematic diagram of the structure of the roller;

[0033] Figure 12 Schematic diagram of the bending performance test of reinforced concrete slab.

[0034] Explanation of the reference numerals: 1-pad; 2-anti-roll structure; 3-roller; 4-first core shaft; 5-second core shaft; 101-transverse through hole; 102-insertion hole; 103-T-shaped groove; 104-T-shaped protrusion; 201-insertion rod; 202-through hole; 203-anti-roll bar; 301-center hole; A-assembly support; B-pier; C-reinforced concrete slab; D-distribution beam. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] The purpose of the present invention is to provide an assembly support for testing the bending performance of reinforced concrete slabs, so as to adapt to reinforced concrete slabs of different sizes and shapes.

[0037] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments. Figure 1 The roller cannot move in the up and down direction or in the left and right direction. Figure 2 In the example, the position of the positioning structure is Figure 1 The roller cannot move in the up and down directions, but can move in the left and right directions between the two positioning structures.

[0038] Reference Figures 1 to 11 This embodiment provides an assembly support (referred to as assembly support A for short) for testing the bending performance of reinforced concrete slabs, including a roller, a pad 1, an anti-roll structure 2 and a positioning structure.

[0039] Among them, the pad 1 includes an upper pad and a lower pad, and the upper pad and the lower pad are respectively located on the upper and lower sides of the roller and are positioned opposite each other. A plurality of sockets 102 are provided on the upper pad and the lower pad, and the distances between the plurality of sockets 102 and the roller are different. The anti-roll structure 2 includes an anti-roll bar 203 and an insertion rod 201. The anti-roll bar 203 is parallel to the roller, and the anti-roll bar 203 is used to limit the rolling of the roller. The insertion rod 201 is used to be inserted into the insertion hole 102, and the insertion rod 201 is connected to the anti-roll bar 203. The anti-roll structure 2 includes multiple and is respectively located on both sides of the roller to prevent the roller from rolling to both sides. The positioning structure is connected to the insertion rod 201 to fix the insertion rod 201 in the insertion hole 102.

[0040] Since the upper pad and the lower pad are both provided with a plurality of insertion holes 102 at different distances from the roller, the position of the anti-roll structure 2 can be changed by inserting the insertion rod 201 into the insertion holes 102 at different positions.

[0041] Reference Figure 12 During the bending performance test of the reinforced concrete slab, a pair of assembly supports A of this embodiment were placed on the buttresses B below the two ends of the reinforced concrete slab C to support the two ends of the reinforced concrete slab C. Simultaneously, a pair of assembly supports A of this embodiment were placed on the reinforced concrete slab C to support the distribution beam D above it. The load was transferred to the reinforced concrete slab C through the distribution beam D, causing the reinforced concrete slab C to bend and deform.

[0042] As a possible example, in this embodiment, the roller includes a drum 3, a first mandrel 4, and a first locking member. The drum 3 comprises multiple, coaxial drums, and the first mandrel 4 sequentially passes through the center holes 301 of the multiple drums 3. A first locking member is secured to each end of the first mandrel 4. The first locking member abuts against the drum 3 near the end of the first mandrel 4, ensuring that the drums 3 through which the first mandrel 4 passes are aligned end to end. The length of the roller can be adjusted by adjusting the number of drums 3 and the position of the first locking member.

[0043] As a possible example, in this embodiment, both the upper and lower pads are composed of multiple detachable splicing plates. The multiple splicing plates that make up the upper pad and the multiple splicing plates that make up the lower pad are distributed along the length of the roller. By adjusting the number of splicing plates, the length of the upper and lower pads along the extension direction of the roller can be adjusted.

[0044] As a possible example, in this embodiment, two adjacent splicing plates are connected by a sliding fit between a protrusion and a groove. Specifically, the protrusion may be a T-shaped protrusion 104, and the groove may be a T-shaped groove 103. Depending on actual needs, those skilled in the art may also choose other connection methods, for example, connecting two adjacent splicing plates with screws.

[0045] As a possible example, in this embodiment, the positioning structure includes a second core shaft 5 and a second locking member. The second core shaft 5 is parallel to the roller, and the second core shaft 5 passes through a plurality of splicing plates and the insertion rod 201 in each splicing plate. The splicing plate is provided with a transverse through hole 101 for the second core shaft 5 to pass through, and the transverse through hole 101 intersects the insertion hole 102 perpendicularly. The insertion rod 201 is provided with a through hole 202 for the second core shaft 5 to pass through, and the through hole 202 is positioned opposite to the transverse through hole 101. A second locking member is fixed at both ends of the second core shaft 5, and the second locking member is offset against the splicing plate limiter near the end of the second core shaft 5. This positioning structure can not only lock and fix the multiple splicing plates strung on the second core shaft 5, but also prevent the insertion rods 201 on the multiple splicing plates from falling out of the insertion hole 102.

[0046] As a possible example, in this embodiment, the insertion rod 201 is perpendicular to the anti-roll bar 203 and fixed at the middle of the anti-roll bar 203. Depending on actual needs, those skilled in the art may also choose other fixing positions for the insertion rod 201, such as at 1 / 3 of the length from one end of the anti-roll bar 203.

[0047] As a possible example, in this embodiment, the first locking member is threadedly connected to the first mandrel 4, and the second locking member is threadedly connected to the second mandrel 5, that is, the first and second locking members are nuts. Depending on actual needs, those skilled in the art may also select other types of structures as the first and second locking members, such as clamping a clamping member at the end of the first mandrel 4 and abutting the clamping member against the adjacent splicing plate, so that the clamping member serves as the first locking member.

[0048] As a possible example, in this embodiment, the first core shaft 4 and the second core shaft 5 are both steel bars. According to different actual needs, those skilled in the art may also choose other types of first core shaft 4 and second core shaft 5.

[0049] As a possible example, in this embodiment, the assembly support A is made entirely of stainless steel to improve overall strength. Those skilled in the art may select other materials according to actual needs.

[0050] As a possible example, in this embodiment, there are three types of splicing plates: a first splicing plate, a second splicing plate, and a third splicing plate. When the upper or lower pad is composed of three or more splicing plates, the first and third splicing plates are located at either end, with several second splicing plates located between the first and third splicing plates. T-shaped protrusions 104 and T-shaped grooves 103 are provided at each end of the second splicing plate. The T-shaped protrusion 104 is provided on the end of the first splicing plate that contacts the second splicing plate, and the T-shaped groove 103 is provided on the end of the third splicing plate that is closest to the second splicing plate.

[0051] This specification uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. An assembly support for testing the bending performance of reinforced concrete slabs, characterized in that: include: roller; Pads, comprising an upper pad and a lower pad, the upper pad and the lower pad being located on the upper and lower sides of the roller respectively and facing each other; The upper pad and the lower pad are both provided with a plurality of insertion holes, and the distances between the plurality of insertion holes and the roller are different; An anti-roll structure, comprising an anti-roll bar and an insertion rod; the anti-roll bar is parallel to the roller and is used to limit the rolling of the roller; the insertion rod is used to be inserted into the insertion hole and is connected to the anti-roll bar; the anti-roll structure includes multiple anti-roll structures and is respectively located on both sides of the roller to prevent the roller from rolling to both sides; a positioning structure connected to the insertion rod to fix the insertion rod in the insertion hole; The roller includes a roller, a first core shaft and a first locking member; the roller includes multiple rollers and has a coaxial line, the first core shaft passes through the multiple rollers in sequence, and the first locking member is fixed to both ends of the first core shaft, and the first locking member is abutted against the roller limit near the end of the first core shaft; The upper pad and the lower pad are both formed by detachably splicing a plurality of splicing plates; The assembly support for testing the bending performance of reinforced concrete slabs is made entirely of stainless steel.

2. The assembly support for testing the bending performance of reinforced concrete slabs according to claim 1, characterized in that: Two adjacent splicing plates are spliced ​​and connected in a sliding manner by means of a protrusion and a groove.

3. The assembly support for testing the bending performance of reinforced concrete slabs according to claim 2, characterized in that: The positioning structure includes a second core shaft and a second locking member; the second core shaft is parallel to the roller, the second core shaft passes through the multiple splicing plates and the insertion rod in each splicing plate, and second locking members are fixed at both ends of the second core shaft, and the second locking member is against the splicing plate limiter near the end of the second core shaft.

4. The assembly support for testing the bending performance of reinforced concrete slabs according to claim 3, characterized in that: The insertion rod is perpendicular to the anti-roll bar and is fixed to the middle portion of the anti-roll bar.

5. The assembly support for testing the bending performance of reinforced concrete slabs according to claim 4, characterized in that: The first locking member is threadedly connected to the first core shaft, and the second locking member is threadedly connected to the second core shaft.

6. The assembly support for testing the bending performance of reinforced concrete slabs according to claim 5, characterized in that: The first core shaft and the second core shaft are both steel bars.

7. The assembly support for testing the bending performance of reinforced concrete slabs according to claim 2, characterized in that: The protrusion is a T-shaped protrusion, and the groove is a T-shaped groove.

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