Concrete shear test device for building earthquake resistance detection

Abstract

The utility model provides a concrete shear test device for building earthquake resistance detection, which is characterized in that a mounting groove is arranged in the middle of a base, two sides of the mounting groove are respectively provided with a sliding chute, the lower parts of support legs are arranged in the sliding chutes and can move along the sliding chutes, a vertical oil cylinder is arranged in the middle of a cross arm, and a telescopic rod of the vertical oil cylinder is positioned on the lower side of the cross arm; a shearing head is arranged at the lower end of the vertical oil cylinder. Horizontal oil cylinders are arranged on the inner sides of the supporting legs. Screw holes are uniformly formed in four sides of the mounting groove at intervals, four screw rods are arranged in the screw holes in the periphery of the mounting groove, the screw rods are arranged in a square shape, two first pressing plates which are parallel to each other are arranged on the four screw rods, a nut is further arranged on each screw rod, and the nuts are located above the first pressing plates. According to the device, the adjustable test block fixing assembly is adopted and can adapt to test blocks with different sizes and fix the test blocks in the mounting groove; the test main body structure is arranged on the base in a sliding mode, when the test block is placed, the test main body structure can move one end of the base, and a large space is reserved for installation of the test block.

Description

TECHNICAL FIELD

[0001] The utility model relates to technical field, more particularly, relate to a kind of concrete shear test device of building seismic resistance detection. BACKGROUND

[0002] In the field of earthquake engineering and building engineering, it is crucial to accurately assess the seismic performance of building structures. Concrete, as one of the most commonly used materials in building structures, its mechanical properties directly affect the safety performance of the entire building. Especially during an earthquake, the shear strength and deformation capacity of concrete structures are key factors in determining whether the building can withstand seismic forces without damage.

[0003] The existing shear test device, during the shearing process, the concrete test block is usually fixed by a simple fixing method, such as a mounting groove. However, when the test block is smaller than the mounting groove, it is not easy to fix firmly. In addition, many shear test devices are inconvenient to place the test block in the test station due to the limitations of the structure of the device itself. SUMMARY

[0004] The utility model is just based on the above technical problem, proposes a kind of concrete shear test device of building seismic resistance detection.

[0005] A kind of concrete shear test device of building seismic resistance detection, comprising: base, test body, the middle part of the base is equipped with installation groove, the two sides of the installation groove are each equipped with a parallel sliding slot, the test body is the door-shaped integrated structure of leg, cross arm, the leg lower part is installed in the sliding slot and can move along the sliding slot, the cross arm middle part is equipped with vertical oil cylinder, the telescopic rod of the vertical oil cylinder is located the cross arm lower side, the vertical oil cylinder lower end is equipped with shear head, the inside of the leg is equipped with horizontal oil cylinder, the front end of the horizontal oil cylinder is also equipped with the shear head;The four edges of the installation groove are equipped with evenly spaced screw holes, four screw rods are arranged in the screw holes around the installation groove, the screw rods are arranged in a square shape, two screw rods are equipped with first pressing plate, the other two screw rods are also equipped with the first pressing plate, two first pressing plates are parallel to each other, a nut is also arranged on each screw rod, and the nut is located above the first pressing plate.

[0006] Preferably, two second pressing plates are also arranged between the first pressing plates, the two ends of the second pressing plates are equipped with sliding blocks, the middle part of the sliding block is equipped with a through hole, the first pressing plate passes through the through hole, and a locking bolt is arranged on the upper side of the sliding block, and the lower end of the locking bolt can be tightly fixed with the first pressing plate.

[0007] Preferably, the outer side of the lower part of the second pressing plate is equipped with a baffle.

[0008] Preferably, the mounting groove is a slot that passes through the base, and a top seat is provided at the lower part of the mounting groove. The top seat is slidably installed in the mounting groove, and the lower side of the top seat is supported and fixed by a lifting cylinder fixed to the lower side of the base.

[0009] Beneficial effects: This device uses an adjustable test block fixing component, which can accommodate test blocks of different sizes and fix them in the mounting slot; and the main test structure is slidably mounted on the base. When placing the test block, the main test structure can move one end of the base, leaving more space for the installation of the test block. Attached Figure Description

[0010] Figure 1 A schematic diagram of the structure of this utility model is shown. Figure 1 ;

[0011] Figure 2 A schematic diagram of the structure of this utility model is shown. Figure 2 ;

[0012] Figure 3 This utility model is shown Figure 1 A magnified view of a portion of the image;

[0013] Figure 4 A schematic diagram of the second pressure plate is shown. Detailed Implementation

[0014] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0015] In this embodiment, as Figures 1-3 The concrete shear test device for seismic testing of a building shown has a mounting groove 8 in the middle of the base 1, and a parallel sliding groove 4 on each side of the mounting groove 8. The test body is a portal-shaped integrated structure composed of a support leg 2 and a crossbeam 3. The lower part of the support leg 2 is installed in the sliding groove 4 and can move along the sliding groove 4. A locking structure is provided at the lower part of the support leg 2 or in the sliding groove 4 to lock the support leg 2 on the sliding groove 4. The locking structure can be a conventional structure, which will not be described in detail here.

[0016] A vertical hydraulic cylinder 5 is provided in the middle of the crossarm 3. The telescopic rod of the vertical hydraulic cylinder 5 is located on the lower side of the crossarm 3. A shearing head 6 is provided at the lower end of the vertical hydraulic cylinder 5. A horizontal hydraulic cylinder 7 is provided on the inner side of the support leg 2. A shearing head 6 is also provided at the front end of the horizontal hydraulic cylinder 7. The vertical hydraulic cylinder 5 and the horizontal hydraulic cylinder 7 can drive the shearing head 6 to perform vertical shearing tests and transverse shearing tests.

[0017] The four edges of the installation groove 8 are provided with evenly spaced screw holes 9, four screw rods 10 are arranged in the screw holes 9 around the installation groove 8, the screw rods 10 are arranged in a square shape, two first pressing plates 11 are arranged on the four screw rods 10, only one first pressing plate 11 is connected to each screw rod 10, and a nut 12 is arranged on each screw rod 10 and located above the first pressing plate 11, so that the first pressing plate 11 can be pressed on the test block.

[0018] When the test block is fixed, the positions of the screw rods 10 are adjusted according to the size of the test block, and finally the first pressing plate 11 and the second pressing plate 13 are pressed on both sides of the test block.

[0019] Two second pressing plates 13 are further arranged between the first pressing plates 11, the two ends of the second pressing plate 13 are provided with sliding blocks 14, the middle part of the sliding block 14 is provided with a through hole, the first pressing plate 11 passes through the through hole, and a locking bolt 15 is arranged on the upper side of the sliding block 14, and the lower end of the locking bolt 15 can be pressed and fixed with the first pressing plate 11.

[0020] When a non-standard test block is encountered, the second pressing plate 13 can be arranged between the first pressing plate 11, and the second pressing plate 13 is pressed on the test block.

[0021] In order to strengthen the limitation of the test block, a baffle 18 can be arranged on the outer side of the lower part of the second pressing plate 13, and when the position of the second pressing plate 13 is adjusted, the second pressing plate 13 is pressed on the test block, and the baffle 18 is tightly attached to the side surface of the test block.

[0022] Similarly, when the second pressing plate 13 is not used and only the first pressing plate 11 is relied on for pressing and fixing, the first pressing plate 11 with the same baffle 18 can be used, so that the first pressing plate 11 also has the ability of horizontal limiting.

[0023] In order to facilitate the cleaning of the debris in the installation groove 8, the installation groove 8 is arranged as a slot hole penetrating through the base 1, and the top seat 16 is arranged at the lower part of the installation groove 8 and is slidingly installed in the installation groove 8, and the lower side of the top seat 16 is supported and fixed by the jacking oil cylinder 17 fixed on the lower side of the base 1.

[0024] The above only describes preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can be variously changed and modified. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A concrete shear test device for building seismic resistance detection, characterized by, The utility model relates to a test device for testing the shear strength of concrete, comprising: a base, a test body, a mounting groove is arranged in the middle of the base, a sliding groove parallel to the mounting groove is arranged on each side of the mounting groove, the test body is a door-shaped integrated structure composed of a supporting leg and a cross arm, the supporting leg is installed at the lower part of the sliding groove and can move along the sliding groove, a vertical oil cylinder is arranged in the middle of the cross arm, the telescopic rod of the vertical oil cylinder is located at the lower side of the cross arm, a shearing head is arranged at the lower end of the vertical oil cylinder, a horizontal oil cylinder is arranged on the inner side of the supporting leg, the front end of the horizontal oil cylinder is also provided with the shearing head; evenly spaced screw holes are arranged on the four edges of the mounting groove, four screw rods are arranged in the screw holes around the mounting groove, the screw rods are arranged in a square shape, a first pressing plate is arranged between two of the screw rods, the first pressing plate is also arranged on the other two screw rods, the two first pressing plates are parallel to each other, a nut is also arranged on each screw rod, and the nut is located above the first pressing plate; two second pressing plates are also arranged between the first pressing plates, sliding blocks are arranged at the two ends of the second pressing plates, a through hole is arranged in the middle of the sliding block, the first pressing plate passes through the through hole, and a locking bolt is arranged on the upper side of the sliding block, the lower end of the locking bolt can be tightly fixed with the first pressing plate; a baffle is arranged on the outer side of the lower part of the second pressing plate; the mounting groove is a slot hole penetrating through the base, a top seat is arranged at the lower part of the mounting groove, the top seat is slidingly installed in the mounting groove, and the lower side of the top seat is supported and fixed by a jacking oil cylinder fixed on the lower side of the base.

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