CN212180215U - Three-dimensional laminated shearing model box - Google Patents
Three-dimensional laminated shearing model box Download PDFInfo
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- CN212180215U CN212180215U CN201921434170.5U CN201921434170U CN212180215U CN 212180215 U CN212180215 U CN 212180215U CN 201921434170 U CN201921434170 U CN 201921434170U CN 212180215 U CN212180215 U CN 212180215U
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Abstract
The utility model relates to a three-dimensional stromatolite shearing mold box comprises H type aluminum alloy layer form frame concatenation, connects through a plurality of spacing connecting pieces between the web of adjacent H type aluminum alloy layer form frame, its characterized in that, spacing connecting piece be three-dimensional spacing connecting piece, including moving component, spacing control and fixed component, wherein, moving component, including universal ball and bull's eye joint, bull's eye joint passes upper frame web after and with universal ball fixed connection, but the universal ball below is free rolling steel ball, places on lower floor's frame web, rather than the point contact; the limiting control piece comprises a parallel baffle plate with a hub, a lower seat and symmetrical limiting holes, wherein a circular ring is arranged in the middle of the parallel baffle plate with the hub, and two symmetrical wings are arranged on two sides of the parallel baffle plate with the hub. The utility model discloses can more effectively simulate soil body boundary condition.
Description
Technical Field
The utility model relates to a three-dimensional stromatolite shear model case device for shaking table is experimental.
Background
Currently, the vibration table test is gradually applied in the field of geotechnical engineering. When a vibration table test is applied to research soil-structure dynamic interaction, a container meeting the conditions, namely a model box, needs to be provided for soil. The volume of the model box is limited and the model box can vibrate along with the vibration of the table top, so that the soil body in the model box can not completely simulate the free foundation condition and can not reasonably simulate the infinite boundary condition of foundation soil, which causes great difficulty for the test. The design of the model box for the vibration table test also becomes an important work in the soil-structure dynamic interaction vibration table test, and the model box with reasonable design is a precondition for smoothly completing the vibration table test.
The typical model box mainly comprises a rigid model soil box, a cylindrical flexible model soil box and a layered shear model soil box. The rigid model soil box has high integral rigidity, small lateral deformation of the box wall and strong boundary reflection, and friction effect needs to be considered, so that a larger boundary effect is easily generated; the cylindrical flexible model soil box has flexibility, but the rigidity is difficult to control, and the soil layer is easy to bend and deform; the layered shear model soil box is an ideal model soil box at present and is formed by splicing a plurality of independent layered frames, and the frames can slide relatively in the horizontal direction, so that the shear deformation of a soil layer can be realized, and the boundary condition of a soil body can be well simulated.
At present, the existing layered shear model soil box is mostly applied to a vibration table test with one-dimensional or two-dimensional vibration direction, and the research on the soil-structure dynamic interaction of a complex engineering structure needs to consider the action of three-dimensional earthquake input, namely, the model soil box needs to realize the vibration in two mutually perpendicular horizontal directions and one vertical direction. The existing layered shear model soil box is mostly rectangular, needs to be provided with a limiting device to prevent the limiting device from generating overlarge displacement, is high in cost and complex in installation, and is difficult to better meet the requirements of model tests. The existing layered shear model soil box interlayer connection mostly adopts springs, screws, bearings, balls and the like, so that interlayer friction is large, the model box frame can only move in two mutually perpendicular horizontal directions or a single horizontal direction, the model box frame cannot freely move in three directions, the characteristic research of model soil is influenced, and interlayer relative displacement cannot be effectively limited.
SUMMERY OF THE UTILITY MODEL
To the problem, the utility model aims at overcoming the not enough of current stratiform shearing model soil box and connecting piece thereof, providing a model box is cuted to three-dimensional stromatolite, through the design to three-dimensional spacing connecting piece, makes model box frame freely remove at two mutually perpendicular's horizontal direction and a vertical direction, more effectively simulates soil body boundary condition. The technical scheme of the utility model as follows:
a three-dimensional laminated shearing model box is formed by splicing H-shaped aluminum alloy layered frames, and webs of adjacent H-shaped aluminum alloy layered frames are connected through a plurality of limiting connecting pieces, and is characterized in that the limiting connecting pieces are three-dimensional limiting connecting pieces and comprise moving components, limiting control components and fixing components, wherein,
the movable component comprises a universal ball and a bull's eye joint, the bull's eye joint penetrates through the web plate of the upper layer of the frame and is fixedly connected with the universal ball, steel balls capable of freely rolling are arranged below the universal ball and are arranged on the web plate of the lower layer of the frame and in point contact with the web plate, and friction-free movement in the horizontal direction can be realized;
the limiting control piece comprises a hub-provided parallel baffle, a lower seat and symmetrical limiting open holes, wherein a circular ring is arranged in the middle of the hub-provided parallel baffle, two symmetrical wings are arranged on two sides of the hub-provided parallel baffle, a bull eye joint and a universal ball are connected and then are sleeved in the circular ring in the middle of the hub-provided parallel baffle together, the two sides of the lower seat are provided with the symmetrical limiting open holes, the two wings of the hub-provided parallel baffle are respectively inserted in the symmetrical limiting open holes on the two sides of the lower seat to limit the moving direction of the universal ball, so that the universal ball can only move in two horizontal directions and one vertical direction which are perpendicular to each other, the upward moving distance of the universal ball in the vertical direction is limited within a certain range, a circular hole is arranged at the upper part of the lower seat for a moving member to pass through and move, and the cylindrical outer wall of the lower seat limits the moving;
and the fixing component is used for fixing the three-dimensional limiting connecting piece on the upper-layer frame web plate and the lower-layer frame web plate of the model box.
Preferably, the moving member further comprises a sleeve arranged outside the bull-eye joint, and the sleeve and the bull-eye joint are jointly connected with the universal ball to enhance the vertical bearing capacity. And a plurality of guardrails are arranged on the periphery of the spliced frame. The lower part of the spliced frame is fixed through a bottom plate. The spliced frame is cylindrical.
The utility model has the advantages of it is following:
(1) the utility model relates to a can be used to the experimental three-dimensional stromatolite shearing model case device of shaking table, utilize the three-dimensional spacing connecting piece between the layer, can realize the vibration of model soil box in two mutually perpendicular horizontal directions and a vertical direction, this device satisfies the experimental requirement of shaking table model;
(2) the three-dimensional limiting connecting piece is used for connecting the layered frames, and the universal ball and the parallel baffle with the hub are designed, so that friction force is not generated between the two mutually connected frame layers, and the real foundation condition can be effectively simulated;
(3) the model box is cylindrical, materials are saved, the layered frame is made of H-shaped aluminum alloy, the rigidity requirement can be effectively met, and the weight is light; the structure is simple, the manufacture is convenient, the function is reliable, the use is flexible, and the test cost can be effectively saved.
Drawings
Fig. 1 is a top view of a cylindrical three-dimensional stacked shear model box assembly of the present invention.
Fig. 2 is a cross-sectional view of the cylindrical three-dimensional stacked shear model box assembly of the present invention.
Fig. 3 is a top view of the three-dimensional spacing connector of the present invention.
Fig. 4 is a sectional view of the three-dimensional spacing connector of the present invention.
Fig. 5 is a schematic view of the moving member of the three-dimensional spacing connector of the present invention.
Fig. 6 is a schematic view of the three-dimensional spacing connector spacing control member of the present invention.
The reference numbers in the figures illustrate: 1, a bolt; 2, a gasket; 3 a bullseye joint; 4, a sleeve; 5, a universal ball; 6 parallel baffle plates with hubs; 7, a lower seat; 8, a steel bottom plate; a 9H-type aluminum alloy layered frame; 10 three-dimensional limiting connecting piece; 11, a guardrail; 12 symmetrical limiting and opening holes; 13 an upper frame web; 14 underlying the frame web.
Detailed Description
The present invention will be described with reference to the accompanying drawings and examples, which are provided to enable those skilled in the art to more fully understand the present invention without limiting the invention in any way.
Referring to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5 and fig. 6, the utility model provides a three-dimensional stromatolite shear model case device of cylinder and three-dimensional spacing connecting piece thereof for shaking table test, specific test device includes: a steel bottom plate 8, and an H-shaped aluminum alloy layered frame 9 is arranged on the upper part of the steel bottom plate 8; the three-dimensional limiting connecting piece 10 is arranged between the H-shaped aluminum alloy layered frames 9; the guard rail 11 is arranged on the periphery of the H-shaped aluminum alloy layer-shaped frame 9 and fixed on the steel bottom plate 8. The steel bottom plate 8 needs to have a strong rigidity to meet the bearing capacity requirement. The H-shaped aluminum alloy layered frame 9 is a closed circular ring formed by welding H-shaped aluminum alloy, is arranged in parallel at equal intervals in the vertical direction and comprises 14 layers, and the layers are connected by using a three-dimensional limiting connecting piece 10. The three-dimensional limiting connecting pieces 10 are fixed on a web plate of the H-shaped aluminum alloy layered frame 9 through bolts, 6 three-dimensional limiting connecting pieces 10 are arranged on each layer at equal intervals, a single three-dimensional limiting connecting piece 10 has certain strength to meet the requirement of bearing capacity, the three-dimensional limiting connecting pieces 10 enable the layers to slide relatively without friction and can also meet the requirement of vertical displacement, and the horizontal displacement and the vertical displacement are limited within +/-5 millimeters. Guardrail 11 is formed by rectangular section steel pipe welding, sets up 8 altogether, and the equidistance encircles 9 a week of H type aluminum alloy layer form frame and is fixed in on the steel bottom plate 8, prevents that too big horizontal displacement from appearing in the model soil box at the vibration in-process.
Three-dimensional spacing connector 10 for cylindrical three-dimensional laminated shear mold box specifically comprises: the 3 bolts 1 and the 2 gaskets 2 jointly fix the connecting piece on an upper-layer frame web 13 (a web of an upper-layer H-shaped aluminum alloy layer-shaped frame), and simultaneously fix the sleeve 4 on the periphery of the bull's eye joint 3; the upper end of the universal ball 5 passes through a middle circular ring of the parallel retaining sheet 6 with the hub and an upper circular hole of the lower seat 7 and is sleeved in the eyelet joint 3; two symmetrical wings at two sides of the parallel baffle plate 6 with the hub are respectively inserted into symmetrical limiting open holes 12 at two sides of the lower seat 7, and the lower seat 7 is fixed on a lower layer frame web plate 14 (a web plate of a lower layer H-shaped aluminum alloy layer-shaped frame). The bull eye joint 3, the steel sleeve 4 and the universal ball 5 need to have stronger strength so as to meet the requirement of bearing capacity.
The steel ball below the universal ball 5 can realize frictionless free movement in the horizontal direction. The movement direction of the universal ball 5 is limited by the insertion of the two wings of the hub parallel baffle 6 and the symmetrical limiting open holes 12 at the two sides of the lower seat 7, so that the universal ball 5 can only move in two horizontal directions and one vertical direction which are perpendicular to each other, and the movement distance of the universal ball 5 in the vertical direction is limited, so that the universal ball can only move upwards within the range of 5 mm in the vertical direction. The cylindrical outer wall of the lower seat 7 limits the moving distance of the universal ball 5 in the horizontal direction, so that the moving distance is kept within +/-5 mm. The vertical pressure is borne by the bull-eye joint 3, the steel sleeve 4 and the universal ball 5, so that no pressure and no friction force are generated between the parallel baffle 6 with the hub and the lower seat 7.
The cylindrical three-dimensional laminated shear model box device for the vibration table test comprises the following steps:
(1) connecting a steel bottom plate 8 and an H-shaped aluminum alloy laminated frame 9 by using bolts;
(2) stacking multiple layers of H-shaped aluminum alloy layer-shaped frames 9 from bottom to top, connecting the layers by using 6 equidistant three-dimensional limiting connecting pieces 10, and ensuring that the H-shaped aluminum alloy layer-shaped frames 9 are horizontal and are arranged equidistantly in the vertical direction in the connecting process;
(3) the steel base plate 8 and the equidistantly arranged guardrails 11 are connected using bolts.
The three-dimensional connecting piece comprises the following use steps:
(1) fixing a steel sleeve 4 at the periphery of the bull eye joint 3 by using 2 bolts 1 and 1 gasket 2;
(2) two wings of the parallel baffle plate 6 with the hub penetrate into symmetrical limiting open holes 12 at two sides of the lower seat 7, and the centers of the two components are positioned on the same vertical line;
(3) the upper end of a universal ball 5 passes through a middle circular ring of a parallel retaining piece 6 with a hub and an upper circular hole of a lower seat 7, and is inserted into a mortise-tenon joint structure joint at the lower end of the bull eye joint 3;
(4) the connecting member is integrally fixed to an upper frame web 13 (web of an upper H-type aluminum alloy layered frame) using 1 bolt 1 and 1 spacer 2.
(5) The lower seat 7 is fixed on a lower layer frame web plate 14 (a web plate of a lower layer H-shaped aluminum alloy layer-shaped frame), and steel balls below the universal ball 5 can horizontally slide on the web plate.
The present invention is not limited to the above-described embodiments. The above description of the embodiments is intended to describe and illustrate the technical solutions of the present invention, and the above embodiments are merely illustrative and not restrictive. Without departing from the spirit of the invention and the scope of the appended claims, the person skilled in the art can make many changes in form and detail within the teaching of the invention.
Claims (5)
1. A three-dimensional laminated shearing model box is formed by splicing H-shaped aluminum alloy layered frames, and webs of adjacent H-shaped aluminum alloy layered frames are connected through a plurality of limiting connecting pieces, and is characterized in that the limiting connecting pieces are three-dimensional limiting connecting pieces and comprise moving components, limiting control components and fixing components, wherein,
the movable component comprises a universal ball and a bull's eye joint, the bull's eye joint penetrates through the web plate of the upper layer of the frame and is fixedly connected with the universal ball, steel balls capable of freely rolling are arranged below the universal ball and are arranged on the web plate of the lower layer of the frame and in point contact with the web plate, and friction-free movement in the horizontal direction can be realized;
the limiting control piece comprises a hub-provided parallel baffle, a lower seat and symmetrical limiting open holes, wherein a circular ring is arranged in the middle of the hub-provided parallel baffle, two symmetrical wings are arranged on two sides of the hub-provided parallel baffle, a bull eye joint and a universal ball are connected and then are sleeved in the circular ring in the middle of the hub-provided parallel baffle together, the two sides of the lower seat are provided with the symmetrical limiting open holes, the two wings of the hub-provided parallel baffle are respectively inserted in the symmetrical limiting open holes on the two sides of the lower seat to limit the moving direction of the universal ball, so that the universal ball can only move in two horizontal directions and one vertical direction which are perpendicular to each other, the upward moving distance of the universal ball in the vertical direction is limited within a certain range, a circular hole is arranged at the upper part of the lower seat for a moving member to pass through and move, and the cylindrical outer wall of the lower seat limits the moving;
and the fixing component is used for fixing the three-dimensional limiting connecting piece on the upper-layer frame web plate and the lower-layer frame web plate of the model box.
2. The mold box of claim 1, wherein the moving member further comprises a sleeve disposed outside the bull-eye joint, the sleeve and the bull-eye joint cooperatively connecting the universal ball to enhance vertical load bearing.
3. The mold box of claim 1, wherein a plurality of guard rails are provided around the spliced frame.
4. The mold box of claim 1, wherein the spliced frame lower portion is secured by a bottom plate.
5. The mold box of claim 1, wherein the spliced frame is cylindrical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921434170.5U CN212180215U (en) | 2019-08-30 | 2019-08-30 | Three-dimensional laminated shearing model box |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921434170.5U CN212180215U (en) | 2019-08-30 | 2019-08-30 | Three-dimensional laminated shearing model box |
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| CN212180215U true CN212180215U (en) | 2020-12-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110455480A (en) * | 2019-08-30 | 2019-11-15 | 天津大学 | A kind of three-dimensional limit connector for 3-D stacks shear model box |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110455480A (en) * | 2019-08-30 | 2019-11-15 | 天津大学 | A kind of three-dimensional limit connector for 3-D stacks shear model box |
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