Structural surface locking structure and core structural surface locking device

Abstract

The present application provides a structural surface locking structure and a core structural surface locking device, which belong to the field of geotechnical testing equipment. The structural surface locking structure includes a first clamping box, a second clamping box and a locking assembly. Among them, the locking assembly includes a first clamping piece, a second clamping piece and a positioning piece. When in use, the first section of the sample and the second section of the sample are connected and fixed by the positioning piece, and then the first section of the sample is fixed by the first clamping piece, and the second section of the sample is fixed by the second clamping piece. After the shear sample is fixed, the first clamping piece and the second clamping piece are respectively fixed by the first clamping box and the second clamping box to limit their movement. The structural surface locking structure adopts a concept different from the standard specimen locking structural surface made by concrete pouring and curing. Compared with the concrete pouring method, it can shorten the specimen preparation time and the shear test cycle, and is portable for on-site testing.

Description

Technical Field

[0001] The present application relates to the field of geotechnical testing equipment, and in particular to a structural surface locking structure and a core structural surface locking device. Background Art

[0002] During the exploration process, drilling core samples is a common exploration method, but the structural surface in the core is the weak surface of the rock's shear resistance. The shear strength of the structural surface is relatively low, and external disturbances can easily cause damage along the structural surface.

[0003] At present, on-site sampling generally selects rocks at key parts of the project with structural surfaces, enters through adit, and cuts rocks at key parts to initially form samples that meet the test size requirements. In structural surface related technologies, concrete is usually used to cast rocks in a shear box to form a standard specimen. After the concrete is cured, a shear test is performed along the structural surface. However, the time required for concrete curing is relatively long, which leads to a long time for the preparation of shear specimens and a long test cycle for the shear test. Summary of the invention

[0004] In view of this, the embodiments of the present application provide a structural surface locking structure and a core structural surface locking device, aiming to shorten the test cycle of the shear specimen.

[0005] In a first aspect, the present application provides a structural surface locking structure, comprising

[0006] A first clamping box, wherein the first clamping box has a first accommodating space; a second clamping box, wherein the second clamping box has a second accommodating space, and a reserved gap is provided between the first clamping box and the second clamping box; and a locking assembly, wherein the locking assembly comprises a first clamping member, a second clamping member and a positioning member, wherein the first clamping member has a first accommodating groove, and the second clamping member has a second accommodating groove, the first clamping member is locked in the first accommodating space, and the second clamping member is locked in the second accommodating space, and the positioning member comprises a first positioning portion and a second positioning portion detachably connected to the first positioning portion, the first positioning portion and the second positioning portion form a positioning groove, and the first accommodating groove, the second accommodating groove and the positioning groove are configured to accommodate a shear specimen.

[0007] In combination with the first aspect, in a first possible implementation manner of the first aspect, the first clamping box includes two detachably connected first limiting members, and the first accommodating space is formed between the two first limiting members.

[0008] In combination with the first possible implementation of the first aspect, in a second possible implementation of the first aspect, the first clamping box also includes a first connecting member and a first nut, the first limiting member is provided with two rows of first mounting holes, and first threaded ends are provided at both ends of the first connecting member. The first threaded ends are accommodated in the first mounting holes and are threadedly connected to the first nut to limit the movement of the first clamping member.

[0009] In combination with the second possible implementation of the first aspect, in a third possible implementation of the first aspect, the second clamping box includes two detachably connected second limiting members, the second accommodating space is formed between the two second limiting members, and the second limiting member and the first limiting member are spaced apart to form the reserved gap.

[0010] In combination with the third possible implementation of the first aspect, in a fourth possible implementation of the first aspect, the second clamping box also includes a second connecting member and a second nut, the second limiting member is provided with two rows of second mounting holes, and second threaded ends are provided at both ends of the second connecting member and the second threaded ends are accommodated in the second mounting holes and are threadedly connected to the second nut to limit the movement of the second clamping member.

[0011] In combination with the first possible implementation manner of the first aspect, in a fifth possible implementation manner of the first aspect, the first clamping member includes a first clamping portion and a first wing portion, and the first clamping portion and the first wing portion are detachably connected.

[0012] In combination with the fifth possible implementation manner of the first aspect, in a sixth possible implementation manner of the first aspect, the first clamping member further includes a first matching block, which can be detachably connected to the first wing, and the first matching block is configured to abut against the surface of the shear specimen.

[0013] In combination with the sixth possible implementation of the first aspect, in a seventh possible implementation of the first aspect, a communicating first groove is formed in the first matching block and the first wing portion, and the first clamping member further includes a first abutting portion, which can be embedded in the first groove and abut against the surface of the shear specimen.

[0014] In combination with the seventh possible implementation manner of the first aspect, in an eighth possible implementation manner of the first aspect, the second clamping member includes a second clamping portion and a second wing portion, and the second clamping portion and the second wing portion are detachably connected.

[0015] In combination with the eighth possible implementation manner of the first aspect, in a ninth possible implementation manner of the first aspect, the second clamping member further includes a second matching block, the second matching block can be detachably connected to the second wing, and the second matching block is configured to abut against the surface of the shear specimen.

[0016] In combination with the ninth possible implementation manner of the first aspect, in a tenth possible implementation manner of the first aspect, the second matching block and the second wing portion are provided with a communicating second groove, and the second clamping member further includes a second abutting portion, which can be embedded in the second groove and abut against the surface of the shear specimen.

[0017] In combination with the tenth possible implementation manner of the first aspect, in an eleventh possible implementation manner of the first aspect, the second wing portion and the first wing portion are arranged opposite to each other along the axial direction of the shear specimen.

[0018] In combination with the first aspect, in a twelfth possible implementation of the first aspect, the first clamping box and the second clamping box are provided with sliding grooves arranged opposite to each other, and the structural surface locking structure further includes a sliding portion, and the sliding portion can slide along the sliding groove.

[0019] In a second aspect, the present application provides a core structure surface locking device, comprising:

[0020] A first clamping box, wherein the first clamping box has a first accommodating space; a second clamping box, wherein the second clamping box has a second accommodating space, and a reserved gap is provided between the first clamping box and the second clamping box; and a locking assembly, wherein the locking assembly comprises a first clamping member, a second clamping member and a positioning member, wherein the first clamping member has a first accommodating groove, and the second clamping member has a second accommodating groove, the first clamping member is locked in the first accommodating space, and the second clamping member is locked in the second accommodating space, and the positioning member comprises a first positioning portion and a second positioning portion detachably connected to the first positioning portion, and the first positioning portion and the second positioning portion form a positioning groove.

[0021] A rock core is passed through and fixed in the first receiving groove, the second receiving groove and the positioning groove.

[0022] In combination with the second aspect, in a first possible implementation manner of the second aspect, the first clamping box includes two detachably connected first limiting members, and the first accommodating space is formed between the two first limiting members.

[0023] In combination with the first possible implementation of the second aspect, in a second possible implementation of the second aspect, the first clamping box also includes a first connecting member and a first nut, the first limiting member is provided with two rows of first mounting holes, and first threaded ends are provided at both ends of the first connecting member. The first threaded ends are accommodated in the first mounting holes and are threadedly connected to the first nut to limit the movement of the first clamping member.

[0024] In combination with the second possible implementation of the second aspect, in a third possible implementation of the second aspect, the second clamping box includes two detachably connected second limiting members, the second accommodating space is formed between the two second limiting members, and the second limiting member and the first limiting member are spaced apart to form the reserved gap.

[0025] In combination with the third possible implementation of the second aspect, in a fourth possible implementation of the second aspect, the second clamping box also includes a second connecting member and a second nut, the second limiting member is provided with two rows of second mounting holes, and second threaded ends are provided at both ends of the second connecting member and the second threaded ends are accommodated in the second mounting holes and are threadedly connected to the second nut to limit the movement of the second clamping member.

[0026] In combination with the first possible implementation manner of the second aspect, in a fifth possible implementation manner of the second aspect, the first clamping member includes a first clamping portion and a first wing portion, and the first clamping portion and the first wing portion are detachably connected.

[0027] In combination with the fifth possible implementation manner of the second aspect, in a sixth possible implementation manner of the second aspect, the first clamping member further includes a first matching block, which can be detachably connected to the first wing, and the first matching block is configured to abut against the surface of the shear specimen.

[0028] In combination with the sixth possible implementation of the second aspect, in a seventh possible implementation of the second aspect, a communicating first groove is formed in the first matching block and the first wing portion, and the first clamping member further includes a first abutting portion, which can be embedded in the first groove and abut against the surface of the shear specimen.

[0029] In combination with the seventh possible implementation manner of the second aspect, in an eighth possible implementation manner of the second aspect, the second clamping member includes a second clamping portion and a second wing portion, and the second clamping portion and the second wing portion are detachably connected.

[0030] In combination with the eighth possible implementation manner of the second aspect, in a ninth possible implementation manner of the second aspect, the second clamping member further includes a second matching block, the second matching block can be detachably connected to the second wing, and the second matching block is configured to abut against the surface of the shear specimen.

[0031] In combination with the ninth possible implementation manner of the second aspect, in a tenth possible implementation manner of the second aspect, the second matching block and the second wing portion are provided with a connected second groove, and the second clamping member further includes a second abutting portion, which can be embedded in the second groove and abut against the surface of the shear specimen.

[0032] In combination with the tenth possible implementation manner of the second aspect, in an eleventh possible implementation manner of the second aspect, the second wing portion and the first wing portion are arranged opposite to each other along the axial direction of the shear specimen.

[0033] In combination with the second aspect, in a twelfth possible implementation of the second aspect, the first clamping box and the second clamping box are provided with sliding grooves arranged opposite to each other, and the core structure surface locking device further includes a sliding part, which can slide along the sliding groove.

[0034] The beneficial effects of the present application are embodied in that the structural surface locking structure includes a first clamping box, a second clamping box and a locking assembly. Among them, the locking assembly includes a first clamping member, a second clamping member and a positioning member. When in use, the first section of the sample and the second section of the sample are connected and fixed by the positioning member, and then the first section of the sample is fixed by the first clamping member, and the second section of the sample is fixed by the second clamping member. After the shear sample is fixed, the first clamping member and the second clamping member are respectively fixed by the first clamping box and the second clamping box to limit their movement. The structural surface locking structure adopts a concept different from the standard specimen made by concrete pouring and curing. Compared with the concrete pouring method, it can shorten the specimen preparation time and the shear test cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions of the implementation methods of the present application, the drawings required for use in the implementation methods will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0036] Figure 1 It is a schematic diagram of the internal structure of the structural surface locking structure provided in an embodiment of the present application;

[0037] Figure 2 It is a structural schematic diagram of a structural surface locking structure provided in an embodiment of the present application;

[0038] Figure 3 yes Figure 2 A schematic structural diagram of the first clamping box in FIG.

[0039] Figure 4 yes Figure 2 A schematic structural diagram of the second clamping box in FIG.

[0040] Figure 5 is a schematic diagram of the structure of a locking assembly provided in an embodiment of the present application;

[0041] Figure 6 is a schematic diagram of the structure of a locking assembly provided in an embodiment of the present application;

[0042] Figure 7 It is a schematic diagram of structural surface shear specimens with different inclination angles provided in the embodiments of the present application.

[0043] Icon: 100-structural surface locking structure; 110-first clamping box; 111-first accommodating space; 113-first limiting member; 1131-first mounting hole; 115-first connecting member; 117-first nut; 130-second clamping box; 131-second accommodating space; 133-second limiting member; 1331-second mounting hole; 135-second connecting member; 137-second nut; 150-locking assembly; 151-first clamping member; 1511-first clamping portion; 1513-first wing; 1515-first matching block; 1517-first abutting portion; 153-second clamping member; 1531-second clamping portion; 1533-second wing; 1535-second matching block; 1537-second abutting portion; 155-positioning member; 1551-first positioning portion; 1553-second positioning portion; 200-core. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solutions and advantages of the implementation methods of this application clearer, the technical solutions in the implementation methods of this application will be clearly and completely described below in conjunction with the drawings in the implementation methods of this application. Obviously, the described implementation methods are part of the implementation methods of this application, not all of the implementation methods. Based on the implementation methods in this application, all other implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0045] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0046] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0047] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0048] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0049] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements; it can be an electrical connection, or an electrical connection. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0050] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0051] In the related art, concrete is usually used to cast rock samples in a shear box to form a standard specimen, and after the concrete is cured, a shear test is performed along the structural surface. However, the concrete curing time is relatively long (at least 1-2 days), which results in a long shear test cycle.

[0052] In addition, concrete pouring also has the following disadvantages:

[0053] 1. During the pouring process, tricalcium silicate in cement reacts with water, that is, the hydration reaction of concrete during the pouring process, resulting in temperature rise. In addition, concrete needs to be configured according to a certain water-cement ratio. Changes in temperature and moisture content have an adverse effect on the measured shear parameters of the structural surface, resulting in poor measurement accuracy and low reliability.

[0054] 2. During the concrete pouring process, the structural surface is in a completely exposed state. During the operation, the structural surface is easily adhered to by concrete. Once adhered to by concrete, the specimen needs to be replaced. Therefore, the operation is cumbersome and the success rate of specimen production is low.

[0055] To this end, the present application provides a structural surface locking structure for conducting rock structural surface shear tests, aiming to solve one or more of the above-mentioned technical problems.

[0056] The structural surface locking structure is used to fix the shear sample, which can be a standard size sample, such as a core obtained by drilling, and the obtained core is used as a shear sample. The shear sample can also be of other sizes, such as a shear sample formed by cutting rock. When selecting or preparing the shear sample, the disturbance to the structural surface should be minimized. The following is an explanation with reference to the accompanying drawings.

[0057] Figure 1 The internal structure diagram of the structural surface locking structure is shown. Figure 2 The structural diagram of the structural surface locking structure is shown. Figure 1 and Figure 2 The structural surface locking structure 100 includes a first clamping box 110 , a second clamping box 130 and a locking assembly 150 .

[0058] Figure 3 Schematic diagram of the structure of the first clamping box is shown. Figure 3 The first clamping box 110 has a first accommodating space 111 .

[0059] In some specific embodiments, the first clamping box 110 includes two detachably connected first stoppers 113, and a first accommodation space 111 is formed between the two first stoppers 113. In a specific configuration, the first stopper 113 can be a rectangular steel plate, and the two rectangular steel plates are relatively arranged to form the first accommodation space 111.

[0060] The two rectangular steel plates are detachably connected. For example, the first clamping box 110 also includes a first connector 115 and a first nut 117, the first limiter 113 is provided with two rows of first mounting holes 1131, and both ends of the first connector 115 are provided with first threaded ends, and the first threaded ends are accommodated in the first mounting holes 1131 and are threadedly connected to the first nut 117. In this embodiment, the two first limiters 113 are connected together by the cooperation of the first connector 115 and the first nut 117. In other embodiments, one end of the first connector 115 can also be fixedly connected to one of the first limiters 113 (for example, by welding), and the other end of the first connector 115 is threadedly connected to the first nut 117 to connect the first connector 115 to the other first limiter 113.

[0061] In some other specific implementations, each row of first mounting holes 1131 is provided with 6 holes. When clamping and locking the assembly 150, appropriate first mounting holes 1131 can be selected to connect the two first stoppers 113 according to the length and inclination angle of the shear specimen, wherein the inclination angle is related to the inclination angle of the structural surface. For example, when the length of the shear specimen is long, two rows of first mounting holes 1131 close to the outside can be selected, and when the length of the shear specimen is short, two rows of first mounting holes 1131 close to the inside can be selected. Of course, the specific installation position of the shear specimen needs to be determined in combination with the inclination angle of the structural surface.

[0062] Figure 4 Schematic diagram of the structure of the second clamping box is shown. Figure 4 The second clamping box 130 has a second accommodating space 131 .

[0063] In some specific embodiments, the second clamping box 130 includes two detachably connected second stoppers 133, and a second accommodation space 131 is formed between the two second stoppers 133. For example, the second stopper 133 is a rectangular steel plate, and the two rectangular steel plates are arranged opposite to each other to form the second accommodation space 131.

[0064] The two rectangular steel plates are detachably connected. For example, the second clamping box 130 also includes a second connecting member 135 and a second nut 137, the second limiting member 133 is provided with two rows of second mounting holes 1331, and the second connecting member 135 is provided with a second threaded end at both ends, and the second threaded end is accommodated in the second mounting hole 1331 and is threadedly connected with the second nut 137. In this embodiment, the two second limiting members 133 are connected together by the cooperation of the second connecting member 135 and the second nut 137. In other embodiments, one end of the second connecting member 135 can also be fixedly connected to one of the second limiting members 133 (for example, by welding), and the other end of the second connecting member 135 is threadedly connected to the second nut 137 to connect the second connecting member 135 with the other second limiting member 133.

[0065] In some other specific implementations, each row of second mounting holes 1331 is provided with 6, and when clamping the locking assembly 150, a suitable second mounting hole 1331 can be selected according to the length and inclination angle of the shear specimen to connect the two second stoppers 133. The structures of the second clamping box 130 and the first clamping box 110 and the technical effects produced are basically the same, and are not described in detail here.

[0066] Here, it should be noted that the first clamping box 110 and the second clamping box 130 are arranged vertically spaced apart, that is, there is a gap between the first clamping box 110 and the second clamping box 130 to form a reserved gap.

[0067] In the present application, the first clamping box 110 and the second clamping box 130 function to clamp and limit the sliding of the locking assembly 150 , that is, the friction between the first clamping box 110 and the second clamping box 130 and the locking assembly 150 is used to limit the sliding of the locking assembly 150 .

[0068] Figure 5 A schematic diagram of the structure of a locking assembly is shown. Figure 5 The locking assembly 150 includes a first clamping member 151 , a second clamping member 153 and a positioning member 155 .

[0069] The first clamping member 151 has a first receiving groove, the second clamping member 153 has a second receiving groove, the first clamping member 151 is locked in the first receiving space 111, and the second clamping member 153 is locked in the second receiving space 131. As mentioned above, the two detachably connected first limiting members 113 limit the first clamping member 151 in the first receiving space 111, and there is no relative displacement between the first limiting member 113 and the first clamping member 151. The two detachably connected second limiting members 133 limit the second clamping member 153 in the second receiving space 131, and there is no relative displacement between the second limiting member 133 and the second clamping member 153.

[0070] In a specific configuration, the first clamping member 151 includes a first clamping portion 1511 and a first wing portion 1513, and the first clamping portion 1511 and the first wing portion 1513 are detachably connected. For example, the first wing portion 1513 and the first clamping portion 1511 are connected by screws, or the first wing portion 1513 and the first clamping portion 1511 can be snap-connected. When the first clamping portion 1511 and the first wing portion 1513 are in a connected state, the first clamping portion 1511 and the first wing portion 1513 form a first receiving groove.

[0071] In the present application, the second clamping member 153 includes a second clamping portion 1531 and a second wing portion 1533, and the second clamping portion 1531 and the second wing portion 1533 are detachably connected. The structures and technical effects of the second clamping member 153 and the first clamping member 151 are basically the same, and are not described here for the sake of simplicity.

[0072] The positioning member 155 includes a first positioning portion 1551 and a second positioning portion 1553 detachably connected to the first positioning portion 1551. The first positioning portion 1551 and the second positioning portion 1553 form a positioning groove. The first receiving groove, the second receiving groove and the positioning groove are configured to receive the shear specimen. In the specific configuration, the first positioning portion 1551 and the second positioning portion 1553 can be connected by screws. In addition, the positioning member 155 needs to be removed before the shear test. Please refer to Figure 6 The function of the positioning member 155 is to pre-fix the shear specimen with the structural surface together, and then fix the two ends of the shear specimen. The technical effect of pre-fixing the shear specimen together is that it can prevent the shear specimen from moving along the structural surface during the installation and fixation of the shear specimen, resulting in a change in the roughness of the structural surface, thereby causing inaccurate test results.

[0073] In order to facilitate understanding of the technical solution of the present application, the applicant briefly describes the structural surface shear test herein.

[0074] Since the shear specimen has a structural surface, the shear specimen is equivalent to being divided into two parts along the structural surface (hereinafter referred to as the first section specimen and the second section specimen). Figure 7 , Figure 7 Schematic diagram showing structural surface shear specimens with different inclination angles.

[0075] Before the shear test, the first section of the sample and the second section of the sample are connected by using the positioning member 155, that is, the shear sample near the structural surface is wrapped by the positioning member 155, and the first section of the sample and the second section of the sample are connected as a whole, so that the first section of the sample and the second section of the sample will not be misaligned relative to each other.

[0076] The first section of the sample is fixed in the first clamping piece 151, and the second section of the sample is fixed in the second clamping piece 153. When fixing, the position of the structural surface should be adjusted to the reserved gap between the first clamping box and the second clamping box, and the plane where the structural surface is located should be parallel to the horizontal plane.

[0077] The first clamping member 151 and the second clamping member 153 are clamped respectively by the first clamping box 110 and the second clamping box 130 , and then the positioning member 155 is removed.

[0078] Here, the applicant believes that it is necessary to explain the timing of removing the positioning member 155. The positioning member 155 can be removed in any of the following steps:

[0079] 1. Before the first clamping member 151 and the second clamping member 153 are clamped by the first clamping box 110 and the second clamping box 130:

[0080] After the first section of the sample is accommodated in the first accommodating groove, the second section of the sample is accommodated in the second accommodating groove, and the positions and angles of the first clamping member and the second clamping member are determined, the sample can be removed.

[0081] 2. After the first clamping member 151 and the second clamping member 153 are locked: remove the positioning member 155 through the reserved gap. For example, use a screwdriver to remove the screws connecting the first positioning portion 1551 and the second positioning portion 1553 to separate the first positioning portion 1551 and the second positioning portion 1553 from the shear specimen.

[0082] It should be noted that, if conditions permit, the positioning member 155 should be removed after all installation work is completed, so as to have less impact on the shear specimen.

[0083] As mentioned above, the lengths of shear specimens vary, and the first clamping member 151 of a fixed length is not suitable for shear specimens of various lengths. To this end, in a specific embodiment, the first clamping member 151 further includes a first matching block 1515, which can be detachably connected to the first wing 1513, and the first matching block 1515 is configured to abut against the surface of the shear specimen.

[0084] In the present application, the first matching block 1515 is detachably connected to the first wing 1513, which is equivalent to extending the length of the first wing 1513, so that the first wing 1513 can support the shear specimen over a larger area, which can better avoid the influence of the deformation of the shear specimen when it is subjected to force during the shear test on the test results, and can improve the accuracy of the test results. For example, when the length of the shear specimen is long, and the length of the shear specimen that can be wrapped by the first clamping portion 1511 and the first wing 1513 is short, during the test, the shear specimen will not be sheared along the development direction of the structural surface, but will be offset from the structural surface at a small angle, resulting in low test accuracy and even unreliable test results. By increasing the number of reasonable first matching blocks 1515, the shear specimen can be sheared along the development direction of the structural surface.

[0085] Similarly, the second clamping member 153 may also include a second block 1535, which can be detachably connected to the second wing 1533, and the second block 1535 is configured to abut against the surface of the shear specimen. The second block 1535 has substantially the same structure and technical effects as the first block 1515, and will not be described in detail for the sake of brevity.

[0086] In the specific setting, the second wing 1533 and the first wing 1513 are arranged relative to each other along the axial direction of the shear specimen. At this time, the second block 1535 and the first block 1515 are also arranged relative to each other along the axial direction of the shear specimen, for example, the first block 1515 is arranged on the upper surface of the first section of the specimen, and the second block 1535 is arranged on the lower surface of the second section of the specimen. During the test, the first section of the specimen is supported by the first block 1515, and the second section of the specimen is also supported by the second block 1535, thereby limiting the movement trajectory of the first section of the specimen and the second section of the specimen under the action of external force, so that shear failure will occur along the direction of the structural surface even if the shear specimen is long.

[0087] In some other specific embodiments, a communicating first groove is formed between the first wing 1513 and the first matching block 1515. The first clamping member 151 further includes a first abutting portion 1517, which can be embedded in the first groove and abut against the surface of the shear specimen.

[0088] In a specific configuration, the positioning member 155 is also provided with a first groove, and the first abutting portion 1517 can also be embedded in the first groove of the positioning member 155 .

[0089] In the present application, the first abutting portion 1517 and the first matching block 1515 both have the function of limiting the shear failure of the shear specimen to the structural surface. The first abutting portion 1517 also has the following advantages over the first matching block 1515:

[0090] 1. Compared with the first matching block 1515 , the first abutting portion 1517 occupies a smaller space, is more suitable for the narrow first accommodation space 111 , and has a more compact structure.

[0091] 2. One end of the first abutting portion 1517 can be embedded in the positioning member 155, so that the positioning member 155 and the first clamping member 151 form a whole, which can more stably and accurately fix the first section of the sample and improve the accuracy of the test results.

[0092] It should be noted that the first abutting portion 1517 cannot cross the structural surface of the shear specimen (for ease of demonstration, Figure 5 , the first abutting portion 1517 is across the structural surface of the shear test), otherwise the shear failure of the shear specimen is disturbed by the first abutting portion 1517, resulting in test failure.

[0093] In some other specific embodiments, the second wing 1533 and the second matching block 1535 are provided with a second groove in communication. The second clamping member 153 also includes a second abutting portion 1537, which can be embedded in the second groove and abut against the surface of the shear specimen. In the present application, the second abutting portion 1537 has substantially the same structure and technical effects as the first abutting portion 1517, and will not be described in detail for the sake of simplicity.

[0094] The second wing 1533 and the second matching block 1535 define a second groove in communication. The second clamping member 153 further includes a second abutting portion 1537 . The second abutting portion 1537 can be embedded in the second groove and abut against the surface of the shear specimen.

[0095] In a specific configuration, the positioning member 155 is also provided with a second groove, and the second abutting portion 1537 can also be embedded in the first groove of the positioning member 155 .

[0096] In the present application, the reason why a reserved gap can be formed between the first clamping box 110 and the second clamping box 130 is that the shear specimen can provide support for the first clamping box 110 so that the first clamping box 110 is suspended above the second clamping box 130 .

[0097] In order to prevent the first clamping box 110 from damaging the structural surface due to its own weight during installation, the first clamping box 110 and the second clamping box 130 are provided with sliding grooves arranged opposite to each other, and the structural surface locking structure 100 also includes a sliding part (not shown in the figure), which can slide along the sliding groove. During installation, the first clamping box 110 is supported by the sliding part, and when performing a shear test, the sliding part is slid along the sliding groove so that the sliding part is separated from the first clamping box 110 and the second clamping box 130. In a specific setting, the sliding part can be a steel ball, which is a rigid material that is not easily deformed and can provide a good supporting effect.

[0098] The present application provides a core structural surface locking device, including a structural surface locking structure 100 and a core 200 .

[0099] The core 200 is passed through and fixed in the first receiving groove, the second receiving groove and the positioning groove.

[0100] The advantage of using the core 200 as the shear test specimen is that the core 200 is in the shape of a long column with a regular shape and a uniform diameter, and is easy to install for the shear test.

[0101] In the present application, the structural surface locking structure 100 includes a first clamping box 110, a second clamping box 130 and a locking assembly 150. Among them, the locking assembly 150 includes a first clamping member 151, a second clamping member 153 and a positioning member 155. When in use, the first section of the sample and the second section of the sample are connected and fixed by the positioning member 155, and then the first section of the sample is fixed by the first clamping member 151, and the second section of the sample is fixed by the second clamping member 153. After the shear sample is fixed, the first clamping member 151 and the second clamping member 153 are respectively fixed by the first clamping box 110 and the second clamping box 130 to limit their movement. The structural surface locking structure 100 adopts a concept different from the standard specimen made by concrete pouring and curing. Compared with the concrete pouring method, it can shorten the specimen preparation time and the shear test cycle, which is convenient for on-site testing.

[0102] In addition, the coordinated use of the first clamping box 110, the second clamping box 130 and the locking assembly 150 can clamp structural surface shear specimens with different inclination angles, so that the structural surface locking structure 100 can be suitable for structural surface shear specimens with different inclination angles.

[0103] The above are only preferred implementations of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A structural surface locking structure, characterized in that: include A first clamping box, wherein the first clamping box has a first accommodating space; A second clamping box, wherein the second clamping box has a second accommodating space, and a reserved gap is provided between the first clamping box and the second clamping box; as well as A locking assembly, the locking assembly comprising a first clamping member, a second clamping member and a positioning member, the first clamping member having a first accommodating groove, the second clamping member having a second accommodating groove, the first clamping member being locked in the first accommodating space, the second clamping member being locked in the second accommodating space, the positioning member comprising a first positioning portion and a second positioning portion detachably connected to the first positioning portion, the first positioning portion and the second positioning portion forming a positioning groove, the first accommodating groove, the second accommodating groove and the positioning groove being configured to accommodate a shear specimen; Wherein, the first clamping box comprises two detachably connected first limiting members, and the first accommodation space is formed between the two first limiting members; The first clamping member comprises a first clamping portion and a first wing portion, and the first clamping portion and the first wing portion are detachably connected; The first clamp also includes a first block that is detachably connectable to the first wing, and the first block is configured to abut against a surface of the shear specimen.

2. The structural surface locking structure according to claim 1, characterized in that: The first clamping box also includes a first connecting member and a first nut. The first limiting member is provided with two rows of first mounting holes. Both ends of the first connecting member are provided with first threaded ends, and the first threaded ends are accommodated in the first mounting holes and are threadedly connected to the first nut to limit the movement of the first clamping member.

3. The structural surface locking structure according to claim 2, characterized in that: The second clamping box includes two detachably connected second limiting members, the second accommodating space is formed between the two second limiting members, and the second limiting member and the first limiting member are spaced apart to form the reserved gap.

4. The structural surface locking structure according to claim 3, characterized in that: The second clamping box also includes a second connecting member and a second nut. The second limiting member is provided with two rows of second mounting holes. Second threaded ends are provided at both ends of the second connecting member. The second threaded ends are accommodated in the second mounting holes and are threadedly connected to the second nut to limit the movement of the second clamping member.

5. The structural surface locking structure according to claim 1, characterized in that: The first matching block and the first wing portion are provided with a first groove in communication, and the first clamping member further comprises a first abutting portion, which can be embedded in the first groove and abut against the surface of the shear specimen.

6. The structural surface locking structure according to claim 5, characterized in that: The second clamping member includes a second clamping portion and a second wing portion, and the second clamping portion and the second wing portion are detachably connected.

7. The structural surface locking structure according to claim 6, characterized in that: The second clamping member further includes a second block, the second block being detachably connectable to the second wing, the second block being configured to abut against a surface of the shear specimen.

Images