Earthwork standard room node tensile test device

Abstract

The utility model discloses an earthwork standard room node tensile testing device which is divided into an upper half part and a lower half part, the upper half part comprises a connecting device and a positioning pin, the lower half part comprises a base, a cross beam, a left frame and a right frame, the left frame and the right frame are installed on the cross beam in a sliding mode, the base is fixed in the middle of the cross beam, and locking blocks are embedded in the left frame and the right frame respectively. A gap allowing the geocell strip to penetrate through is formed between the locking block and the inner wall of the frame, and a locking bolt is arranged to adjust the size of the gap between the locking block and the side wall of the frame. The upper half part is connected with an upper cross beam of the stretching equipment, a base of the lower half part is connected with a lower cross beam of the stretching equipment, a to-be-tested geocell strip is inserted into a gap between the locking block and the side wall of the frame, one end of a steel wire rope is connected with a node of the to-be-tested geocell strip, the other end of the steel wire rope is connected to a positioning pin of the upper half part, and the stretching equipment is started; and carrying out a tensile test on the earthwork standard room node. The device is easy to operate and convenient to assemble and disassemble, and the working efficiency is greatly improved.

Description

Technical Field

[0001] This utility model belongs to the field of geosynthetic materials technology, specifically relating to a geocell node tensile strength testing device. Background Technology

[0002] Geosynthetics are products made from synthetically produced polymers, used to reinforce or protect soil layers by placing them within, on the surface of, or between different soil layers. Geocells are a type of geosynthetic material with a unique three-dimensional network structure. They are made from long strips of polymer through various welding processes. The overall strength generated by the interaction between the strips and the welded joints divides the soil into zones, tightly binding the soil through embedding. Simultaneously, the friction between the cell walls and the soil, and the friction between the geocell layer and the surrounding soil layers, form a reinforced body. Geocells are widely used in geotechnical engineering projects such as foundation treatment, embankments, retaining walls, and slope protection.

[0003] Joints play a crucial role in the performance of geocells. To ensure that geocells meet the requirements of geotechnical engineering construction, it is necessary to test the tensile strength of geocell joints. Currently, the tensile strength of joints is tested by clamping a geocell strip specimen with a joint in the middle using a tensile testing device, and then applying an axial force until the specimen fails. When using conventional testing equipment for tensile strength testing, slippage can easily occur between the clamp and the geocell strip specimen, leading to inaccurate results in the tensile strength test of geocell joints.

[0004] Therefore, to address the above shortcomings, it is necessary to provide a tensile strength testing device for geocell nodes. Utility Model Content

[0005] This invention addresses the problem that slippage easily occurs between the existing clamps and the geocell strip specimens during the tensile performance testing of geocell nodes, affecting the accuracy of the tensile performance test and thus the application of geocells in geotechnical engineering construction such as foundation treatment, embankments, retaining walls, and slope protection. The invention provides a geocell node tensile testing device.

[0006] This utility model is achieved through the following technical solution:

[0007] A tensile strength testing device for geocell nodes, comprising an upper part and a lower part;

[0008] The upper part includes a connecting device and a positioning pin. The positioning pin is pluggably installed on the connecting device and is used to connect one end of the wire rope.

[0009] The lower half part comprises a base, a crossbeam, a left locking block, a right locking block, locking bolts, a left frame, a right frame and positioning bolts, the base is fixed on the crossbeam, the left frame and the right frame are both provided with upper square holes and lower square holes, the left frame and the right frame are slidably connected with the crossbeam through the lower square holes thereof, the left locking block is installed in the upper square hole of the left frame, the right locking block is installed in the upper square hole of the right frame, gaps allowing the geocell strip to pass through are formed between the left locking block and the side wall of the left frame and between the right locking block and the side wall of the right frame; the locking bolts are arranged on the left frame and the right frame at positions corresponding to the upper square holes, the size of the gaps between the locking blocks and the side walls of the frames can be adjusted by tightening or loosening the locking bolts, so that the geocell strip in the gaps can be clamped or loosened; the positioning bolts are arranged on the left frame and the right frame at positions corresponding to the lower square holes, the fixing relationship between the left frame and the right frame and the crossbeam can be adjusted by tightening or loosening the positioning bolts, and then the distance between the left frame and the right frame can be adjusted by pushing the left frame and the right frame.

[0010] In the above technical solution, the connecting device comprises an upper cylindrical segment and a lower cylindrical segment, the diameter of the upper cylindrical segment is smaller than the diameter of the lower cylindrical segment, a first radial through hole is arranged on the upper cylindrical segment, and a second radial through hole is arranged on the lower cylindrical segment; the upper cylindrical segment is used for being inserted into the mounting hole of the upper crossbeam of the stretching equipment, and a first pin is inserted into the first radial through hole of the upper cylindrical segment, so that the connecting device is connected with the upper crossbeam of the stretching equipment; the positioning pin is inserted into the second radial through hole of the lower cylindrical segment.

[0011] In the above technical solution, the bottom of the base is provided with a bottom cylindrical segment, a third radial through hole is arranged on the bottom cylindrical segment, the bottom cylindrical segment is used for being inserted into the mounting hole of the lower crossbeam of the stretching equipment, and a second pin is inserted into the third radial through hole of the bottom cylindrical segment, so that the base is connected with the lower crossbeam of the stretching equipment.

[0012] In the above technical solution, the crossbeam is a cuboid, and a lengthwise groove is arranged on the side surface of the crossbeam.

[0013] In the above technical solution, the base is fixed at the middle position of the bottom of the crossbeam.

[0014] In the above technical solution, the length of the crossbeam is 200-300 mm.

[0015] The advantages and beneficial effects of the utility model are as follows:

[0016] The utility model is simple in operation, convenient to assemble and disassemble, and greatly improves work efficiency. The test device effectively solves the problem that the sliding of the geocell strip and the clamp affects the accuracy of the tensile performance test of the geocell node in the process of testing the tensile performance of the geocell node. The geocell strip is convenient to replace in the process of testing the test device, and work efficiency is greatly improved.

[0017] The utility model discloses simple structure, and the production cost is lower, can satisfy the market demand of mass production, effectively reduces the investment of test cost, and avoids material waste.

[0018] The utility model discloses improve geocell node tensile property test accuracy, solve geocell in ground treatment, embankment, retaining wall, slope protection etc. Major problem of geotechnical engineering construction application. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the space structure schematic diagram of the utility model.

[0020] Figure 2 It is the upper half portion structure schematic diagram of the utility model.

[0021] Figure 3 It is the lower half portion structure schematic diagram of the utility model.

[0022] Figure 4 It is the partial enlarged schematic diagram of steel wire rope connection geocell strip node.

[0023] For the ordinary skill in the art, under the premise of not paying creative labor, can obtain other related drawings according to the above drawing. DETAILED DESCRIPTION

[0024] In order to make the personnel in the technical field better understand the utility model scheme, the technical scheme of the utility model is further illustrated below in combination with specific embodiments.

[0025] A geocell node tensile test device, comprising upper half portion and lower half portion.

[0026] Referring to the accompanying drawings Figure 2 The upper half portion includes connecting device 1 and positioning pin 2;Wherein, the connecting device 1 includes upper cylindrical section 1.1 and lower cylindrical section 1.2, and the diameter of upper cylindrical section 1.1 is less than the diameter of lower cylindrical section 1.2, and first radial through hole 1.11 is arranged on upper cylindrical section 1.1, and second radial through hole 1.21 is arranged on lower cylindrical section 1.2;The upper cylindrical section 1.1 is used to insert the mounting hole of the upper beam of the stretching equipment, and the first radial through hole 1.11 of the upper cylindrical section 1.1 is inserted into the first pin, and then the connection of the connecting device and the upper beam of the stretching equipment is realized;The positioning pin 2 is inserted into the second radial through hole 1.21 of the lower cylindrical section 1.2, and the positioning pin 2 is used to connect with one end of the steel wire rope 3.

[0027] Referring to the accompanying drawings Figure 3, the lower half includes base 9, crossbeam 8, left locking block 4, right locking block 5, locking bolt 11, left frame 6, right frame 7 and positioning bolt 10, the base 9 is L-shaped, bottom cylindrical section 9.1 is provided on the bottom of base 9, third radial through hole 9.11 is arranged on bottom cylindrical section 9.1, bottom cylindrical section 9.1 is used for inserting the mounting hole of the lower crossbeam of the stretching equipment, and the second pin is inserted in the third radial through hole 9.11 of bottom cylindrical section 9.1, and then the connection of base 9 and the lower crossbeam of the stretching equipment is realized;The crossbeam 8 is a cuboid, and a lengthwise groove is formed in the side surface of the crossbeam 8, and the base 9 is welded and fixed at the middle position of the bottom of the crossbeam 8;The left frame 6 and the right frame 7 are both in the shape of 'Lu', that is, the upper square hole and the lower square hole are arranged on the left frame 6 and the right frame 7, and the left frame and the right frame are slidably connected with the crossbeam 8 through the lower square holes of the left frame and the right frame (that is, the crossbeam 8 is slidably installed in the lower square holes of the left frame and the right frame), the left locking block 4 is installed in the upper square hole of the left frame 6, and the right locking block 5 is installed in the upper square hole of the right frame 7, and the left locking block 4 and the left frame 6 side wall and the right locking block 5 and the right frame 7 side wall both have a gap allowing the geocell strip 12 to pass through;The locking bolt 11 is arranged on the left frame 6 and the right frame 7 corresponding to the position of the upper square hole, and the size of the gap between the locking block and the frame side wall can be adjusted by tightening or loosening the locking bolt 11, so that the geocell strip 12 in the gap is clamped or loosened;The positioning bolt 10 is arranged on the left frame 6 and the right frame 7 corresponding to the position of the lower square hole, and the fixing relationship between the left frame 6 and the right frame 7 and the crossbeam 8 is adjusted by tightening or loosening the positioning bolt 10, and then the distance between the left frame 6 and the right frame 7 is adjusted by pushing the left frame 6 and the right frame 7.

[0028] Referring to the drawings Figure 1 The use method of the geocell node tensile test device is as follows:

[0029] Step one: the upper half of the geocell node tensile test device is inserted into the mounting hole of the upper crossbeam of the stretching equipment, and the first pin is inserted into the first radial through hole 1.11 of the upper cylindrical section 1.1, and then the connecting device is connected with the upper crossbeam of the stretching equipment.

[0030] Step two: the bottom cylindrical section 9.1 of the lower half of the geocell node tensile test device is inserted into the mounting hole of the lower crossbeam of the stretching equipment, and the second pin is inserted into the third radial through hole 9.11 of the bottom cylindrical section 9.1, and then the base 9 is connected with the lower crossbeam of the stretching equipment.

[0031] Step three: according to the length of the geocell strip to be tested, the distance between the left frame 6 and the right frame 7 on the crossbeam 8 is adjusted, and after the adjustment is appropriate, the positioning bolt 10 is tightened to fix the position of the left frame 6 and the right frame 7.

[0032] Step four: insert the geocell strip with nodes to be tested into the gap between the left locking block and the left frame side wall and the gap between the right locking block and the right frame side wall (the nodes will be divided into four strips, two of which are inserted into the gap between the left locking block and the left frame side wall, and the other two are inserted into the gap between the right locking block and the right frame side wall), and then tighten the locking screw to fix the geocell strip through the locking block.

[0033] Step five: connect one end of the steel wire rope 3 to the node of the geocell strip to be tested through the connecting piece. Specifically, refer to the attached Figure 4 , a connecting piece is sleeved at the node of the geocell strip, and then the top of the connecting piece is inserted into the steel wire rope 3 and locked by the steel wire rope buckle 22 to connect the steel wire rope 3 with the top of the connecting piece.

[0034] Step six: insert the positioning pin 2 into the second radial through hole 1.21 of the lower cylindrical section 1.2 of the upper half of the geocell node tensile test device, and connect the other end of the steel wire rope 3 to the positioning pin 2.

[0035] Step seven: start the stretching device and perform the geocell node tensile test, and record the data.

[0036] Step eight: after the test is completed, disconnect the steel wire rope 3 from the positioning pin 2 and the geocell strip, loosen the locking bolt, and remove the geocell strip.

[0037] Step nine: pull out the first pin and the second pin, and separate the geocell node tensile test device from the stretching device.

[0038] The above has exemplarily described the present application, and it should be noted that any simple modification, change or equivalent replacement without creative labor of those skilled in the art without departing from the core of the present application falls within the protection scope of the present application.

Claims

1. A geocell node tensile test device comprising an upper half and a lower half, characterized in that: the upper half comprises a connecting device and a positioning pin, the positioning pin being pluggably mounted on the connecting device, and the positioning pin being used to connect one end of a steel wire rope; the lower half comprises a base, a crossbeam, a left locking block, a right locking block, a locking bolt, a left frame, a right frame and a positioning bolt, the base being fixed on the crossbeam, the left frame and the right frame each being provided with an upper square hole and a lower square hole, the left frame and the right frame being slidably connected with the crossbeam through the respective lower square holes, the left locking block being mounted in the upper square hole of the left frame, the right locking block being mounted in the upper square hole of the right frame, there being a gap between the left locking block and the side wall of the left frame and between the right locking block and the side wall of the right frame, allowing a geocell strip to pass through; the locking bolt being arranged on the left frame and the right frame at a position corresponding to the upper square hole; and the positioning bolt being arranged on the left frame and the right frame at a position corresponding to the lower square hole.

2. The geocell node tensile test apparatus of claim 1, wherein: The connecting device comprises an upper cylindrical section and a lower cylindrical section, the diameter of the upper cylindrical section being smaller than that of the lower cylindrical section, a first radial through hole being arranged on the upper cylindrical section, and a second radial through hole being arranged on the lower cylindrical section; the positioning pin being inserted into the second radial through hole of the lower cylindrical section.

3. The geocell node tensile test apparatus of claim 1, wherein: The bottom of the base is provided with a bottom cylindrical section, and a third radial through hole is arranged on the bottom cylindrical section.

4. The geocell node tensile test apparatus of claim 1, wherein: The crossbeam is in the shape of a cuboid, and a lengthwise groove is arranged on the side surface of the crossbeam.

5. The geocell node tensile test apparatus according to claim 1, wherein: The base is fixed at the middle position of the bottom of the crossbeam.

6. The geocell node tensile test apparatus according to claim 1, wherein: The length of the crossbeam is 200-300 mm.

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