CN216284837U - Seepage test device for exploring load transfer mechanism of rigid pile composite foundation - Google Patents
Seepage test device for exploring load transfer mechanism of rigid pile composite foundation Download PDFInfo
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- CN216284837U CN216284837U CN202122617582.6U CN202122617582U CN216284837U CN 216284837 U CN216284837 U CN 216284837U CN 202122617582 U CN202122617582 U CN 202122617582U CN 216284837 U CN216284837 U CN 216284837U
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- model box
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- 238000012360 testing method Methods 0.000 title claims abstract description 28
- 239000002131 composite material Substances 0.000 title claims abstract description 23
- 238000012546 transfer Methods 0.000 title claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 64
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 44
- 239000010959 steel Substances 0.000 claims abstract description 44
- 239000007921 spray Substances 0.000 claims abstract description 21
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 5
- 239000010935 stainless steel Substances 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 238000001764 infiltration Methods 0.000 abstract description 3
- 230000008595 infiltration Effects 0.000 abstract description 3
- 239000004575 stone Substances 0.000 description 6
- 238000004088 simulation Methods 0.000 description 5
- 238000011160 research Methods 0.000 description 4
- 230000000630 rising effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
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Abstract
A seepage test device for exploring load transfer mechanism of a rigid pile composite foundation, a main body model box, wherein the main body model box comprises a baffle and a movable retaining wall, the side of the movable retaining wall is provided with a stiffening rib, a water inlet hole and a water drain hole are reserved at the bottom of the opposite baffle, a temporary fixed pipeline device is welded on the baffle surface, the pipelines are all connected by flanges, an S-shaped PVC pipeline is arranged inside the model box, the upper part of the model box is a lifting support, the lifting support consists of two sections of square steel, the lower part of the lifting support is connected with a first nut for the main body model box, the upper part of the lifting support is connected with a second nut for the frame, the frame comprises angle steel and a perforated steel plate, a channel is reserved on one side of the angle steel, two ends of the perforated steel plate are connected with the frame by a third nut, a tee joint is inserted into the hole of the three-way joint, two sides of the tee joint are connected with a water supply pipeline, the lower side of the tee joint is connected with a rainfall spray nozzle, and simultaneously the rainfall spray nozzle is fixed on the steel plate, the water supply pipeline consists of stainless steel corrugated pipes with different lengths, the corrugated pipes can be bent and deformed at will, the position of a rainfall spray head can be changed, the rainfall coverage of the whole model box area is fully met, the device is simple and convenient to operate, and the change rule of the load transmission mechanism of the rigid pile composite foundation can be explored through rainfall infiltration and an underground water level lifting test.
Description
Technical Field
The utility model relates to a rainfall infiltration and underground water level rise test device for an unsaturated soil composite foundation, in particular to a water seepage test device for exploring a load transfer mechanism of a rigid pile composite foundation in the rainfall infiltration and underground water level rise and fall processes.
Background
The rising and falling of the underground water level can cause the change of the effective stress of the foundation soil body below the water level line or below the water level line after the change, thereby inducing new ground settlement deformation. The existing research results also show that regional settlement in most areas of China is caused by the reduction of underground water level generated by underground water mining. The settlement and deformation of shallow and deep foundations caused by the reduction of the underground water level will affect the bearing and stressed deformation characteristics of the rigid pile composite foundation. For the research on the foundation load transfer rule of the rigid pile composite ground, the change rule cannot be intuitively found through pure theoretical calculation and finite element simulation.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a seepage test device for researching a load transmission mechanism of a rigid pile composite foundation, and aims to solve the problems that the research on the load transmission mechanism of the rigid pile composite foundation in the existing research is not intuitive, not convenient, time-consuming and labor-consuming.
In order to solve the technical problems, the technical scheme of the utility model is as follows:
the seepage test device is characterized by comprising a main body model box, a movable retaining wall, a lifting support, a water supply pipeline, a drainage pipeline, angle steel, a perforated steel plate, a three-way joint, a rainfall spray nozzle, a first nut, a second nut and a third nut. The main body model box comprises a baffle and a movable retaining wall, stiffening ribs are arranged on the side face of the movable retaining wall, a water inlet and a water drain hole are reserved at the bottom of the opposite baffle, a device for temporarily fixing a pipeline is welded on the surface of the baffle, the pipeline is connected by a flange, an S-shaped PVC pipeline is arranged in the model box, a lifting support is arranged on the upper portion of the model box, the lifting support consists of two sections of square steel, the lower portion of the lifting support is connected with a first nut for the main body model box, the upper portion of the lifting support is connected with a second nut for a square frame, the square frame comprises an angle steel and a perforated steel plate, a channel is reserved on one side of the angle steel, two ends of the perforated steel plate are connected with a square frame of the angle steel through a third nut, a tee joint is inserted into the hole of the perforated steel plate, two sides of the tee joint are connected with a water supply pipeline, the lower side of the tee joint is connected with a rainfall spray nozzle, the rainfall spray nozzle is fixed on the steel plate, the water supply pipeline consists of stainless steel corrugated pipes with different lengths, the corrugated pipe can be bent and deformed at will, and the position of the rainfall spray head can be changed.
The seepage test device for researching the load transfer mechanism of the rigid pile composite foundation is characterized in that: the movable retaining wall of the main model box is required to reserve a water inlet hole and a water drain hole at the bottom of the opposite baffle, a temporary fixed pipeline device is welded on the baffle surface, and the whole model box body has good sealing performance.
The seepage test device for researching the load transfer mechanism of the rigid pile composite foundation is characterized in that: the inner diameter of the square steel of the upper section of the lifting support is larger than that of the square steel of the lower section of the lifting support.
The seepage test device for researching the load transfer mechanism of the rigid pile composite foundation is characterized in that: the water supply pipeline consists of stainless steel corrugated pipes, the corrugated pipes can be bent and deformed at will, and the position of the rainfall spray head can be changed without disassembling the three-way joint.
The seepage test device for researching the load transfer mechanism of the rigid pile composite foundation is characterized in that: the rainfall spray heads are connected with the lower side of the three-way joint and fixed on the steel plate, and the flow passing through each rainfall spray head in unit time can be controlled through rotation.
The utility model has the beneficial effects that: when the device is used, the device is fixed at a proper position, when an underground water level rising simulation test is carried out, a water inlet hole is reserved at one side of a steel plate at the bottom of a box body, the outside of the water inlet hole is connected with a water pipe, the water pipe inside and outside the box body is connected through a flange, a bottom water supply power system is opened during the test, water is supplied from bottom to top through an S-shaped pipeline, and the underground water level rising is simulated; during the simulated underground water level descending test, the crushed stone laid at the bottom of the box body, a layer of window gauze laid at the upper part of the crushed stone, a drainage channel is opened, water in the model box flows out of the drainage hole after penetrating through the crushed stone layer, and the simulated underground water level descending is carried out; when a rain test is simulated, the three-way joint is connected into a water supply pipeline, the lower part of the joint is connected with a rainfall spray head, the position of the spray head is moved randomly or the number of the spray heads is increased or decreased, and the condition that rainfall covers the whole area of the model box is fully met; therefore, the change rule of the load transmission mechanism of the rigid pile composite foundation can be rapidly and conveniently explored more intuitively through a simulation test.
Drawings
FIG. 1 is an overall schematic view of one embodiment of the present invention;
FIG. 2 is a schematic view of a body model box of the present invention.
Fig. 3 is a schematic view of the rain device of the present invention.
Detailed Description
The following description of the present invention is provided to facilitate the understanding of innovations, technical means, and objectives of the present invention.
As shown in fig. 1 to 3, the seepage test device for exploring the load transfer mechanism of the composite foundation of the rigid pile comprises a main model box 1, a lifting support 9, a water supply pipeline 6, a water discharge pipeline 7, an angle steel square frame 11, a steel plate with holes 12, a tee joint 13 and a rainfall spray nozzle 16. The main model box 1 comprises a movable retaining wall 2 and a baffle 3, a water inlet hole and a water drain hole are reserved on the baffle 3 opposite to the movable retaining wall 2, a temporary fixed pipeline device is welded on the baffle 3, an S-shaped PVC pipeline 5 is arranged in the model box body, when an underground water level rise simulation test is carried out, the water inlet hole is reserved on one side of a steel plate at the bottom of the main model box 1, the outside of the water inlet hole is connected with a water pipe, the water pipe inside and outside the box body is connected through a flange, a bottom water supply power system is opened during the test, water is supplied from bottom to top through the S-shaped pipeline 5, and the underground water level rise is simulated; during the experiment of simulating the drop of the underground water level, the crushed stone is laid at the bottom of the main model box 1, a layer of window gauze is laid on the upper part of the crushed stone, a drainage channel is opened, water in the model box permeates the crushed stone layer and flows out of a drainage hole, and the drop of the underground water level is simulated.
In this embodiment, the main body model box has a water supply pipe 6 and a water discharge pipe 7 at the bottom, the pipes are connected by flanges, the main body model box 1 has a lifting support 9 at the upper part, the lifting support 9 can be adjusted to lift up and down and adjust the precipitation height, the upper part of the lifting support 9 is a framework of the rain device, the framework comprises angle steel 11 and a steel plate 12 with holes, a three-way joint 13 is inserted into the hole of the steel plate with holes, the two sides of the water supply pipeline are connected with the water supply pipeline, the lower side of the water supply pipeline is connected with the rainfall spray head 16, the position of the rainfall spray head 16 can be changed by bending and twisting the corrugated pipe 15 of the water supply pipeline during operation, the area of the whole model box covered by rainfall is fully met, the rainfall sprayers 16 are fixed on the steel plate, the flow passing through each sprayer in unit time can be controlled through rotation, the flow is increased by about 0.1L/min every rotation, and the effect of simulating different rainfall intensities in the nature is achieved.
The working principle is as follows: during the use, place suitable position with main part model case 1, the drainage pipe 7 of bottom half has been adjusted, 1 upper portion of main part model case is a rain device, through the steerable precipitation height of adjustment lifting support 9, 9 upper portions of lifting support are rain device skeletons, insert three way connection 13 in the hole of foraminiferous steel sheet 12 in the skeleton, connect both sides and supply channel 6 and be connected, the downside is connected with rainfall shower nozzle 16, rainfall shower nozzle 16 is fixed on steel sheet 12, and have independent switch, the delivery port size is adjustable, and increase about 0.1L/min's flow per round of turning, reach the different rainfall intensity effect in simulation nature.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the scope of the present invention, and the technical solution and the utility model concept of the present invention are equivalent to be replaced or changed within the scope of the present invention.
Claims (7)
1. A seepage test device for researching load transfer mechanism of a rigid pile composite foundation is characterized by comprising a main model box (1), a movable retaining wall (2), a lifting support (9), a water supply pipeline (6), a water discharge pipeline (7), angle steel (11), a perforated steel plate (12), a three-way joint (13), a rainfall spray head (16), a first nut (8), a second nut (10) and a third nut (14), wherein the main model box (1) comprises a baffle (3) and the movable retaining wall (2) with stiffening ribs (4) on the side surface, a water inlet and a water discharge hole are reserved at the bottom of the baffle (3) opposite to the movable retaining wall (2), a device for temporarily fixing the pipeline connected by a flange is welded on the surface of the baffle (3), the lifting support (9) on the upper portion of the main model box (1) is composed of two sections of square steel, the upper end and the lower end of the square steel are respectively connected with a square frame and the main model box (1) through the second nut (10) and the first nut (8), the box comprises angle steel (11) with a channel reserved on one pair of sides and a perforated steel plate (12) capable of being inserted into a three-way joint, two ends of the perforated steel plate are connected with the box of the angle steel (11) through nuts III (14), two sides and the lower side of the three-way joint (13) are respectively connected with a water supply pipeline and a rainfall spray nozzle (16) fixed on the steel plate (12), the water supply pipeline is composed of stainless steel corrugated pipes (15) with different lengths, and the position of the rainfall spray nozzle (16) can be changed.
2. The seepage test device for researching the load transfer mechanism of the rigid pile composite foundation according to claim 1 is characterized in that: the pipeline device which enables the main model box (1) to have good sealing performance and is temporarily fixed through flange connection is welded on the baffle (3) opposite to the movable retaining wall (2) of the main model box (1).
3. The seepage test device for researching the load transfer mechanism of the rigid pile composite foundation according to claim 1 is characterized in that: the inner diameter of the square steel of the upper section of the lifting support (9) is larger than that of the square steel of the lower section.
4. The seepage test device for researching the load transfer mechanism of the rigid pile composite foundation according to claim 1 is characterized in that: the stainless steel bellows (15) constituting the water supply line can realize the change of the position of the rainfall spray head (16).
5. The seepage test device for researching the load transfer mechanism of the rigid pile composite foundation according to claim 1 is characterized in that: the rainfall spray head (16) fixed on the steel plate with holes (12) can control the flow passing through in unit time through rotation.
6. The seepage test device for researching the load transfer mechanism of the rigid pile composite foundation according to claim 1 is characterized in that: two ends of the steel plate with holes (12) are connected with the square frame of the angle steel (11) through nuts III (14), and the rainfall range of the whole rainfall test can be controlled by moving or increasing the number of the steel plates with holes (12).
7. The seepage test device for researching the load transfer mechanism of the rigid pile composite foundation according to claim 1 is characterized in that: the inner pipeline and the outer pipeline of the main body model box (1) are connected through flanges, and water is supplied from bottom to top through the S-shaped PVC pipeline in the main body model box (1) to simulate the rise of underground water level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122617582.6U CN216284837U (en) | 2021-10-29 | 2021-10-29 | Seepage test device for exploring load transfer mechanism of rigid pile composite foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122617582.6U CN216284837U (en) | 2021-10-29 | 2021-10-29 | Seepage test device for exploring load transfer mechanism of rigid pile composite foundation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216284837U true CN216284837U (en) | 2022-04-12 |
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ID=81072801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122617582.6U Expired - Fee Related CN216284837U (en) | 2021-10-29 | 2021-10-29 | Seepage test device for exploring load transfer mechanism of rigid pile composite foundation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216284837U (en) |
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2021
- 2021-10-29 CN CN202122617582.6U patent/CN216284837U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220412 |