CN110793825B - A geotechnical model test compaction device suitable for multiple working conditions - Google Patents
A geotechnical model test compaction device suitable for multiple working conditions Download PDFInfo
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- CN110793825B CN110793825B CN201911042741.5A CN201911042741A CN110793825B CN 110793825 B CN110793825 B CN 110793825B CN 201911042741 A CN201911042741 A CN 201911042741A CN 110793825 B CN110793825 B CN 110793825B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/23—Dune restoration or creation; Cliff stabilisation
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Abstract
本发明提供了一种适用于多工况的土工模型实验压实装置，包括模型箱和与模型箱连接的压实装置，所述的压实装置包括依次连接的液压装置和固定装置，所述的液压装置上连接有液压杆，固定装置为空心结构，所述的液压杆穿过固定装置，液压杆穿过固定装置的一端连接有压实钢板；所述的固定装置上还铰接有支撑装置，所述的支撑装置为抓柄式连接装置或内支撑式连接装置。本发明的压实装置设计简洁，操作起来比较灵活方便，重量较轻，安全可靠，具有两种操作模式，可以进行任意位置土体的压实，同时此装置可拆卸，不占据较大的使用空间。
The present invention provides a geotechnical model experiment compaction device suitable for multiple working conditions, including a model box and a compaction device connected to the model box, the compaction device including a hydraulic device and a fixing device connected in sequence, the hydraulic device is connected to a hydraulic rod, the fixing device is a hollow structure, the hydraulic rod passes through the fixing device, and one end of the hydraulic rod passing through the fixing device is connected to a compaction steel plate; the fixing device is also hinged with a support device, and the support device is a grip-type connection device or an internal support-type connection device. The compaction device of the present invention is simple in design, flexible and convenient to operate, light in weight, safe and reliable, has two operation modes, can compact soil at any position, and the device is detachable and does not occupy a large use space.
Description
Technical Field
The invention belongs to the technical field of geotechnical model experiments, and particularly relates to a geotechnical model experiment compacting device suitable for multiple working conditions.
Background
The centrifugal model experiment is an experimental method for simulating the actual engineering state by simulating the gravitational field and is used for solving the engineering actual problem and theoretical research. The geotechnical centrifuge mainly comprises a support, a weight box, a model box, a hanging basket and the like. The stress, deformation and damage of the prototype geotechnical structure are simulated by using the geotechnical centrifuge, the design scheme is verified, the material parameter research, the mathematical model verification and the numerical analysis calculation result are performed, and the method is widely applied to the geotechnical engineering field. The geometric shape of the real object is reduced in proportion by a similar principle, and a model is made of soil bodies with the same physical properties, so that the stress state of the model in a centrifugal force field is consistent with that of a prototype in a gravity field, and the test technology of engineering properties is researched.
Compaction of soil refers to the application of mechanical energy to the soil mass by manual or mechanical means to densify the soil particles, resulting in new structural strength of the soil in a short period of time, including enhanced friction and engagement between coarse-grained soils, and increased molecular attraction between fine-grained soils. In the centrifugal model experiment, various actual working conditions, such as a settlement simulation experiment of piles, need to be simulated in a model box, and an actual soil layer needs to be simulated. Because of the limitation of the size of the model box, the compaction of soil is generally carried out by adopting a manual compaction hammer, but the compaction is generally carried out without adopting a large machine, but in experimental engineering, a plurality of layers of soil are often required to be compacted, so that the physical expenditure of people is greatly increased, a great deal of time is wasted, the compaction effect is sometimes not ideal, and the problems of uneven soil layer compaction, uneasy control of soil compaction depth and the like are solved.
Disclosure of Invention
Aiming at the defects and the shortcomings of the prior art, the invention aims to provide a geotechnical model experiment compacting device suitable for multiple working conditions, and solves the technical problems that soil layers of devices in the prior art are not compacted uniformly and soil compacting depth is not easy to control.
In order to achieve the above purpose, the application is realized by adopting the following technical scheme: the compaction device comprises a model box and a compaction device connected with the model box, wherein the compaction device comprises a hydraulic device and a fixing device which are sequentially connected, the hydraulic device is connected with a hydraulic rod, the fixing device is of a hollow structure, one end of the hydraulic rod is connected with the hydraulic device, and the other end of the hydraulic rod penetrates through the fixing device and is connected with a compaction steel plate;
the fixing device is also hinged with a supporting device, and the supporting device is a grab handle type connecting device or an internal supporting type connecting device.
The invention also has the following technical characteristics:
The grab handle type connecting device comprises a telescopic grab handle and a connecting sliding rod which are sleeved, one end of the connecting sliding rod is sleeved with the telescopic grab handle, the other end of the connecting sliding rod is connected with a connecting sleeve head, and the connecting sleeve head is connected with the fixing device through a first connecting piece;
The first connecting piece comprises an ear plate connected with the fixing device and a connecting ring connected with the ear plate, and the connecting sleeve head is hinged with the connecting ring;
the ear plates are arranged on the fixing device at intervals of 120 degrees.
The telescopic grab handle is provided with a tightening bolt.
The inner support type connecting device comprises a telescopic rod and a connecting rod which are sleeved, one end of the telescopic rod is sleeved with the connecting rod, the other end of the telescopic rod is hinged with the inner wall supporting steel plate, one end of the connecting rod is connected with the telescopic rod, the other end of the connecting rod is connected with a connecting sleeve head, and the connecting sleeve head is hinged with the fixing device through a second connecting piece; the inner support type connecting devices are used in pairs;
The second connecting pieces are arranged on the fixing device at intervals of 120 degrees.
The connecting rod on be provided with the clamping bolt.
The fixing device is also connected with a handle, and a round level is also arranged on the fixing device.
The hydraulic rod is provided with a graduated scale, and the hydraulic rod is connected with the compacted steel plate through a steel plate fixing bolt.
Compared with the prior art, the invention has the beneficial technical effects that:
The compaction device disclosed by the invention is simple in design, flexible and convenient to operate, light in weight, safe and reliable, has two operation modes, can compact soil bodies at any positions, and is detachable and does not occupy a large use space;
According to the device disclosed by the invention, the compaction effect can be greatly improved, the experimental error caused by the problem of uneven compaction and the like is reduced, meanwhile, the labor is saved, the overall experimental time is shortened, and the experimental efficiency is improved.
The invention can effectively control the compaction depth by arranging the graduated scale at the lower part of the hydraulic device.
Drawings
FIG. 1 is a schematic view of a grip type, internal support type device
Fig. 2 is a top view of a grip handle device
FIG. 3 is a top view of an internal support device
FIG. 4 is a schematic diagram illustrating the operation of the grip device
FIG. 5 is a schematic diagram illustrating the operation of the internal support type device
FIG. 6 is a schematic view of the connection of a hydraulic device to a grip handle device
FIG. 7 is a schematic view of the connection between the hydraulic device and the internal support device
FIG. 8 is an enlarged view of an inner wall supporting steel plate
FIG. 9 is a schematic view of a scale of the lower portion of the hydraulic device
FIG. 10 is a schematic view of a complete set of compacted steel plates
FIG. 11 is a schematic view of a model box
The meaning of each reference numeral in the figures is: 1-model box, 2-compaction device, 3-hydraulic means, 4-fixing device, 5-hydraulic stem, 6-compaction steel plate, 7-strutting arrangement, 8-grab handle formula connecting device, 9-internal support formula connecting device, 10-flexible grab handle, 11-connection slide bar, 12-connection pullover, 13-first connecting piece, 14-otic placode, 15-go-between, 16-clamping bolt, 17-telescopic link, 18-connecting rod, 19-inner wall supporting steel plate, 20-second connecting piece, 21-grab handle, 22-round collimator, 23-scale, 24-steel plate dead bolt, 25-soil body.
The details of the invention are explained in further detail below with reference to the drawings and examples.
Detailed Description
The following specific embodiments of the present application are provided, and it should be noted that the present application is not limited to the following specific embodiments, and all equivalent changes made on the basis of the technical scheme of the present application fall within the protection scope of the present application.
The various working conditions in the invention refer to working conditions with more soil mass to be compacted and working conditions with less soil mass to be compacted.
Example 1:
According to the technical scheme, as shown in fig. 1 to 11, the embodiment provides a geotechnical model experiment compacting device suitable for multiple working conditions, which comprises a model box 1 and a compacting device 2 connected with the model box 1, and is characterized in that the compacting device 2 comprises a hydraulic device 3 and a fixing device 4 which are sequentially connected, the hydraulic device 3 is connected with a hydraulic rod 5, the fixing device 4 is of a hollow structure, the hydraulic rod 5 passes through the fixing device 4, one end of the hydraulic rod 5 is connected with the hydraulic device 3, and the other end of the hydraulic rod passes through the fixing device 4 and is connected with a compacted steel plate 6;
The soil in the model box 1 is compacted by driving the compacting steel plate 6 through the hydraulic device 3. The hydraulic means 3 may be an automatic hydraulic means or a manual hydraulic means.
The fixing device 4 is also hinged with a supporting device 7, and the supporting device 7 is a grab handle type connecting device 8 or an internal supporting type connecting device 9. The grip-type connecting means 8 and the inner support-type connecting means 9 are for connecting the mold box 1 to the compacting means 2.
As a preferred embodiment, the grip handle type connecting device 8 includes a telescopic grip handle 10 and a connecting slide rod 11, one end of the connecting slide rod 11 is sleeved with the telescopic grip handle 10, the other end is connected with a connecting sleeve head 12, and the connecting sleeve head 12 is connected with the fixing device 4 through a first connecting piece 13; one end of the telescopic grab handle 10 is of a hook-shaped structure, and is convenient to connect with the model box 1, the telescopic grab handle 10 is sleeved with the connecting sliding rod 11, and the telescopic grab handle 10 can be rotated to find a proper position.
The first connecting piece 13 comprises an ear plate 14 connected with the fixing device 4 and a connecting ring 15 connected with the ear plate 14, and the connecting sleeve head 12 is hinged with the connecting ring 15; the arrangement of the connecting ring 15 can enable the connecting sleeve head 12 to slide on the connecting ring 15, so that the telescopic grab handle 10 can find the most suitable connecting position with the model box;
The lugs 14 are arranged on the fixing device 4 at 120 ° intervals.
As a preferable example of this embodiment, the telescopic grab handle 10 is provided with a tightening bolt 16. After the telescopic grab handle 10 finds the most suitable connection position with the model box, the telescopic grab handle 10 is fixed by tightening the bolt 16 so that the telescopic grab handle can not rotate any more.
As a preferable mode of this embodiment, the inner support type connecting device 9 includes a telescopic rod 17 and a connecting rod 18 that are sleeved, one end of the telescopic rod 17 is sleeved with the connecting rod 18, the other end is hinged with an inner wall support steel plate 19, one end of the connecting rod 18 is connected with the telescopic rod 17, the other end is connected with the connecting sleeve head 12, and the connecting sleeve head 12 is hinged with the fixing device 4 through a second connecting piece 20; the telescopic rod 17 is sleeved with the connecting rod 18, the telescopic rod 17 can rotate, the inner wall supporting steel plate 19 is helped to be in close contact with the inner wall of the model box 1, and compaction operation is facilitated.
When in use, the inner support type connecting devices 9 are arranged in pairs to form a triangular support, so that the inner support type connecting device is more stable.
The second connecting elements 20 are arranged at 120 ° intervals on the fastening device 4.
As a preferable example of this embodiment, the connecting rod 18 is provided with a tightening bolt.
As a preferable example of this embodiment, the fixing device 4 is further connected with a handle 21, and the fixing device 4 is further provided with a circular level 22. The handle 21 plays a role in conveniently carrying the compaction device 2, and the round level 22 can enable the device to be on a horizontal plane, so that soil compaction is smoother, and experimental errors are reduced.
As a preferable example of this embodiment, the scale 23 is disposed on the hydraulic rod 5, and the hydraulic rod 5 is connected to the compacted steel plate 6 through the steel plate fixing bolt 24. The compaction depth can be accurately controlled according to the scale 23, and the test deviation can be reduced.
The use mode of the embodiment is as follows:
when more soil mass needs to be compacted in the model box, the grab handle type connecting device 8 is adopted,
Gripping handle type: the fixing device 4 is connected with the connecting slide bar 11 through the connecting sleeve head 12, the connecting slide bar 11 can be detached from the connecting sleeve head 12, the connecting slide bar 11 is connected with the telescopic grab handles 10, the telescopic grab handles 10 are three in number and can be freely detached, meanwhile, the telescopic grab handles 10 can horizontally rotate around the fixing device 4 by 120 degrees, meanwhile, the telescopic grab handles 10 can rotate by 360 degrees, are fixed on the outer wall of the model box 1 through the telescopic grab handles 10 so as to adjust different angles, adapt to different positions of the top edges of the model box 1, and the telescopic grab handles 10 are controlled by tightening bolts 16 to control the telescopic length of the telescopic grab handles. The lower part of the hydraulic device 3 is provided with a graduated scale 23, so that the compaction depth can be accurately controlled, meanwhile, the lower part is fixedly provided with a compacted steel plate 6 by a steel plate fixing bolt 24, the compacted steel plate 6 is provided with a whole set of steel plates, and different models can be replaced according to different test requirements.
When less soil mass needs to be compacted in the model box, the inner support type connecting device 9 is adopted,
Internal support type: the fixing device 4 is connected with the connecting rod 18 through the connecting sleeve head 12, the connecting sleeve head 12 is hinged with the fixing device 4 through the second connecting piece 20, the connecting rod 18 can be freely taken down, the connecting rod 18 is connected with the telescopic rod 17, the telescopic rod 17 is controlled by the tightening bolt 16 on the upper portion of the connecting rod 18 to control the length of the telescopic rod 17, the telescopic rod 17 can rotate by 360 degrees, meanwhile, the telescopic rod 17 is connected with the inner wall supporting steel plate 19, the inner wall supporting steel plate 19 is supported on the inner wall of the model box 1, the inner wall supporting steel plate 19 can rotate by 120 degrees up and down, the adjusting angle is supported on the inner wall of the model box 1, then compaction of test soil is carried out, six inner supporting type connecting devices are arranged in total, every two groups are 120 degrees, every supporting type connecting device can rotate by 90 degrees up and down, a triangle is formed between two supporting type connecting devices of every group and the model box 1, and the whole device is used for stabilizing not to incline. The lower part of the hydraulic device 3 is provided with a detailed graduated scale 23, the compacting depth can be accurately controlled according to the graduated scale 23, the lower part of the hydraulic device is provided with a set of steel plates with regular and irregular shapes by fixing the compacted steel plates 6 on the hydraulic device through steel plate fixing bolts 24, and the compacted steel plates 6 are selected according to working condition requirements.
Claims (4)
1. The compaction device for the geotechnical model experiment suitable for multiple working conditions comprises a model box (1) and a compaction device (2) connected with the model box (1), and is characterized in that the compaction device (2) comprises a hydraulic device (3) and a fixing device (4) which are sequentially connected, the hydraulic device (3) is connected with a hydraulic rod (5), one end of the hydraulic rod (5) is connected with the hydraulic device (3), and the other end of the hydraulic rod passes through the fixing device (4) and is connected with a compacted steel plate (6);
the fixing device (4) is also hinged with a supporting device (7), and the supporting device (7) is a grab handle type connecting device (8) and an inner supporting type connecting device (9);
the grab handle type connecting device (8) comprises a telescopic grab handle (10) and a connecting sliding rod (11) which are sleeved, one end of the connecting sliding rod (11) is sleeved with the telescopic grab handle (10), the other end of the connecting sliding rod is connected with a connecting sleeve head (12), and the connecting sleeve head (12) is connected with the fixing device (4) through a first connecting piece (13);
The first connecting piece (13) comprises an ear plate (14) connected with the fixing device (4) and a connecting ring (15) connected with the ear plate (14), and the connecting sleeve head (12) is hinged with the connecting ring (15);
the ear plates (14) are arranged on the fixing device (4) at intervals of 120 degrees;
a tightening bolt (16) is arranged on the telescopic grab handle (10);
the inner support type connecting device (9) comprises a telescopic rod (17) and a connecting rod (18) which are sleeved, one end of the telescopic rod (17) is sleeved with the connecting rod (18), the other end of the telescopic rod is hinged with an inner wall support steel plate (19), one end of the connecting rod (18) is connected with the telescopic rod (17), the other end of the connecting rod is connected with a connecting sleeve head (12), and the connecting sleeve head (12) is hinged with the fixing device (4) through a second connecting piece (20); the inner support type connecting devices (9) are used in pairs;
The second connecting pieces (20) are arranged on the fixing device (4) at intervals of 120 degrees.
2. The geotechnical model experiment compacting apparatus suitable for multiple working conditions according to claim 1, wherein the connecting rod (18) is provided with a tightening bolt.
3. The geotechnical model experiment compacting apparatus suitable for multiple working conditions according to claim 1, wherein the fixing device (4) is further connected with a handle (21), and the fixing device (4) is further provided with a circular level (22).
4. The geotechnical model experiment compacting device suitable for multiple working conditions according to claim 1, wherein a graduated scale (23) is arranged on the hydraulic rod (5), and the hydraulic rod (5) is connected with the compacted steel plate (6) through a steel plate fixing bolt (24).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911042741.5A CN110793825B (en) | 2019-10-30 | 2019-10-30 | A geotechnical model test compaction device suitable for multiple working conditions |
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| CN201911042741.5A CN110793825B (en) | 2019-10-30 | 2019-10-30 | A geotechnical model test compaction device suitable for multiple working conditions |
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| CN110793825B true CN110793825B (en) | 2024-11-26 |
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| CN115128094A (en) * | 2022-06-09 | 2022-09-30 | 河南科技大学 | An internal observation and temperature measurement device for mass concrete |
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