CN211057878U - Multifunctional foundation pit model test system equipment - Google Patents
Multifunctional foundation pit model test system equipment Download PDFInfo
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- CN211057878U CN211057878U CN201920490441.2U CN201920490441U CN211057878U CN 211057878 U CN211057878 U CN 211057878U CN 201920490441 U CN201920490441 U CN 201920490441U CN 211057878 U CN211057878 U CN 211057878U
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Abstract
The utility model relates to a multifunctional foundation pit model test system device, which comprises a model box system and a loading, unloading and loading system; the model box system comprises a main box, a water tank and an upper iron ladder and a lower iron ladder; the main box is formed by connecting steel plates, organic glass, angle steel and bolts, the steel plates are assembled on two sides of the main box and ribbed, a sealing strip is arranged at the joint, and the transparent organic glass whole plate is embedded in the steel plates to be used as an observation window; the loading, unloading and loading system comprises a soil piling field, a soil loading and unloading channel, an excavator, a movable steel beam frame and a pressurizing device; the soil piling field is formed by connecting steel plates, angle steel and bolts, and one end of the soil piling field is connected with a soil loading and unloading channel. The utility model has the advantages that: the utility model is simple in operation, structural function are diversified, can carry out the indoor model test of foundation ditch excavation to environmental impact, can detect the stress strain, the pore water pressure of the soil body, can carry out dynamic loading and static loading.
Description
Technical Field
The utility model relates to a foundation ditch model test equipment field, in particular to multi-functional foundation ditch model test system equipment.
Background
The model test is a method for carrying out scale research on specific engineering geological problems according to a certain similarity principle, obtains related data and checks design defects by carrying out corresponding tests on a scale reduction or equal ratio model, and is one of the most main research means in the engineering field. The economic strength of China is more and more powerful, which is far from the rapid development of urban construction, high-type, heavy-type and large-scale buildings are more endless, the difficulty of construction technology is also increased, and the foundation pit engineering is a soil retaining structure, underground water control, environmental protection and other measures which are needed for ensuring the safety and stability of an underground space formed by downward excavation of the ground during the construction of the underground structure, and the importance of the foundation pit engineering is self-evident. However, in the current domestic urban construction, excavation of the foundation pit inevitably affects peripheral subway tunnels, buildings (structures), pipelines and the like. The existing data are analyzed and explained by engineering examples to show the influence of foundation pit excavation on the periphery under the geological condition of a certain specific area, and at present, corresponding indoor model tests are hardly developed temporarily, so that the relevant research has important significance.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming not enough among the prior art, providing a multi-functional foundation ditch model test system equipment.
The multifunctional foundation pit model test system equipment comprises a model box system and a loading, unloading and loading system;
the model box system comprises a main box, a water tank and an upper iron ladder and a lower iron ladder; the main box is formed by connecting steel plates, organic glass, angle steel and bolts, the steel plates are assembled on two sides of the main box and ribbed, a sealing strip is arranged at the joint, and the transparent organic glass whole plate is embedded in the steel plates to be used as an observation window; the water tank is arranged on two sides of the main tank and is separated from the main tank by partition plates and partition clamping grooves, and the water tank is formed by connecting steel plates, angle steel and bolts; the upper and lower iron ladders are arranged at the rear side of the main box; a concrete base is laid under the whole box body, and drainage channels are arranged on two sides of the concrete base; water level observation holes are equidistantly arranged on two sides of the main tank and the water tank; the outer wall of the right water tank is provided with a display system;
the loading, unloading and loading system comprises a soil piling field, a soil loading and unloading channel, an excavator, a movable steel beam frame and a pressurizing device; the soil piling field is formed by connecting steel plates, angle steel and bolts, and one end of the soil piling field is connected with a soil loading and unloading channel; the soil loading and unloading channel is a belt type soil loading and unloading channel, a belt pulley is arranged at the upper end of the soil loading and unloading channel, the upper plane of the belt pulley is also used as a soil unloading platform, and the lower end of the soil loading and unloading channel is erected to the high position of the soil yard by using a concrete pier; the movable steel beam frame consists of a steel column, a fixed I-steel main beam and a movable I-steel cross beam, and a linear guide rail is arranged on the sliding side of the I-steel cross beam; the excavator can move on the I-shaped steel beam; the pressurizing device comprises an oil jack and a loading plate, the oil jack is respectively arranged on the I-shaped steel beam, the loading plate is fixed at the lower end of the oil jack, and the oil jack can slide on the I-shaped steel beam;
the water tanks 2 are arranged on two sides of the main tank 1 and are separated from the main tank 1 by pervious concrete 20, and two sides of the pervious concrete 20 are fixed by steel bars and bolts 23; the water tank 2 is formed by connecting a steel plate, angle steel, steel bars and bolts 23, and a water inlet and outlet pipe 21 and a valve 22 are arranged on the side surface; a submersible pump is arranged in the drainage ditch 5; the water level observation hole 6 is five holes formed in the steel wall of the water tank 2 above the bottom of the water tank, an organic glass tube is hung outside the water tank 2, the tube wall is provided with water level scales, one section of the organic glass tube is bent and inserted into the hole of the tank body, and the periphery of the hole is sealed.
Preferably, the method comprises the following steps: and pre-burying a prefabricated tunnel model and laying monitoring elements in the main box.
Preferably, the method comprises the following steps: the height of the upper and lower iron ladders is consistent with that of the main box.
Preferably, the method comprises the following steps: the bottom of the steel column is provided with a concrete weight, and the fixed part is connected by angle steel and bolts.
Preferably, the method comprises the following steps: and a data operating system is arranged on the rear side of the soil piling field, and comprises a computer display, a fiber grating monitoring system, a water pressure data monitoring system and a soil loading and unloading and loading control system.
Preferably, the method comprises the following steps: the excavator is a small excavator which moves on an I-shaped steel beam.
The utility model has the advantages that:
(1) the utility model is simple in operation, structural function is diversified, can carry out the indoor model test of foundation ditch excavation to environmental impact, can detect the stress-strain of the soil body, pore water pressure, can carry out dynamic loading and static loading, can simulate under the excavation condition, detect the stress-strain response of peripheral tunnel, house, underground pipeline etc. can monitor the structural internal force of tunnel, pipeline and house etc., meet an emergency, subside, horizontal displacement, the earth's surface subsides, the deep horizontal displacement of the soil body, pore water pressure isoparametric.
(2) The utility model discloses a mold box leakproofness is good, and intensity and rigidity are big, can not warp, can carry out by the stability of proof test.
(3) Transparent organic glass is adopted, so that the situation of the filled soil body and the subsequent test can be directly observed.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of a partial structure of the present invention;
FIG. 3 is a schematic view of a partial structure of the present invention;
fig. 4 is a schematic view of a partial structure of the present invention.
Description of reference numerals: 1-main box; 2-a water tank; 3-a display system; 4-concrete base; 5, a drainage ditch; 6-water level observation hole; 7-observation window; 8, going up and down an iron ladder; 9-a dump site; 10-loading and unloading soil channel; 11-concrete piers; 12-an excavator; 13-steel column; 14-concrete weights; 15-i-beam main beam; 16-i-beam; 17-a loading plate; 18 — a data operating system; 19-oil jack; 20-pervious concrete; 21-water inlet and outlet pipes; 22-a valve; 23-steel bars, steel plates, angle steels and bolts.
Detailed Description
The present invention will be further described with reference to the following examples. The following description of the embodiments is merely provided to aid in understanding the invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
As shown in fig. 1, the multifunctional foundation pit model test system equipment comprises three parts: a mold box system, a soil loading and unloading and loading system, and a data manipulation system 18.
The model box system comprises a main box 1, a water tank 2 and an upper and lower iron ladder 8. The main box 1 is formed by connecting steel plates, organic glass, angle steel and bolts; the steel plates are assembled on two sides of the main box 1, the rigidity is ensured by ribbing, and the sealing strips at the joints of the steel plates ensure the sealing property; the whole transparent organic glass plate is embedded in the steel plate to be used as an observation window 7; the prefabricated tunnel model can be pre-buried in the main box 1 according to test requirements, and monitoring elements are arranged to collect monitoring data and the like in the excavation process of the foundation pit. The water tank 2 is arranged on two sides of the main tank 1 and is separated from the main tank 1 by partition boards and partition clamping grooves; the water tanks 2 are formed by connecting steel plates, angle steel and bolts, are used for changing the height difference of the water levels of the water tanks 2 on two sides, simulating foundation pit excavation precipitation and the like, do not need water filling when the influence of underground water is not considered, and are controlled by a gate. The upper and lower iron ladders 8 are arranged on one side of the main box 1 and can be customized independently, the height of the upper and lower iron ladders is consistent with that of the main box 1, and therefore the upper and lower iron ladders are convenient for related personnel to get on and off. Concrete base 4 is laid under whole box, and drainage ditch 5 is seted up on concrete base 4 both sides, can high-efficient discharge abandon water. Water level observation holes 6 are equidistantly arranged on two sides of the main tank 1 and the water tank 2, so that the change of the simulated underground water level can be observed at any time. The outer wall of the water tank 2 at one side is embedded with the liquid crystal real-time display system 3, and the liquid crystal real-time display system 3 can display the parameters of the main test element test and the current engineering state and is in wireless connection and communication with a computer.
The loading, unloading and loading system comprises a soil piling field 9, a soil loading and unloading channel 10, a small excavator 12, a movable steel beam frame and a pressurizing device. The soil piling field 9 is composed of steel plates, angle steel and bolt connection, and one end of the soil piling field is connected with a soil loading and unloading channel 10. The soil loading and unloading channel 10 is a belt type soil loading and unloading channel, a belt pulley is arranged at the upper end of the soil loading and unloading channel, the upper plane of the belt pulley is also used as a soil unloading platform, the lower end of the soil loading and unloading channel 10 is erected to the high position of a soil yard 9 by a concrete pier 11, a belt is adopted to transport soil bodies dug out of the main box 1 to the soil yard 9 on one side of the soil yard, and a transmission belt is controlled by a motor. The excavation program may be set by a computer. The movable steel beam frame consists of eight (four front and back) steel columns 13, two fixed I-steel main beams 15 at the top and two movable I-steel cross beams 16, concrete weights 14 are arranged at the bottoms of the eight steel columns 13, the steel columns 13 are stabilized, the fixed parts are connected by angle steel and bolts, and the movable I-steel cross beams 16 are provided with linear guide rails on the sliding sides. The compact excavator 12 is a computer controlled unmanned excavator that can move freely on an i-beam 16. The pressurizing device comprises oil pressure jacks 19 and a loading plate 17, wherein the two oil pressure jacks 19 are respectively arranged on the I-shaped steel beam 16, the loading plate 17 is fixed at the lower ends of the oil pressure jacks 19, the uniform stress during loading is ensured, a uniform surface load is formed, and the oil pressure jacks 19 can freely slide on the I-shaped steel beam 16.
The data operation system 18 comprises a computer display, a fiber grating monitoring system, other data monitoring systems such as water pressure and the like, a loading and unloading and loading control system and the like, wherein the monitoring, acquisition and control display has the following functions that ① can automatically acquire measurement data of various distributed optical fiber strain temperature equipment and can automatically calibrate and convert standard data formats, a ② system adopts a database mode for storage and has the functions of quick query, processing and analysis, a ③ system data processing has the operations of length correction, smooth denoising, moving average, shrinkage expansion, translation, inversion, rotation, alignment, data editing, data returning and the like, a ④ system data analysis curve has the functions of visualization, amplification, reduction and whole-image roaming, a ⑤ system has the function of data batch processing and can automatically generate and export reports and processing images, and a ⑥ has the function of safety management and can process engineering data after a user is authorized to log in the system.
The use method of the multifunctional foundation pit model test system equipment comprises the following steps:
(1) filling soil into the main box 1 by using the loading and unloading soil channel 10, and quantifying according to the test requirement;
(2) pre-burying a prefabricated test model in the main tank 1, laying monitoring elements, and opening the water tanks 2 on two sides if necessary;
(3) adjusting the position of the I-beam cross beam 16 to align the pressurizing position;
(4) starting a pressurizing device, starting a simulation test, and checking display data;
(5) and after the test is finished, storing data and cleaning the site.
As shown in fig. 3 and 4, the water tanks 2 are disposed at both sides of the main tank 1 and separated from the main tank 1 by pervious concrete 20, and the pervious concrete 20 is fixed at both sides by steel bars and bolts 23 to reduce deformation and avoid damage; the water tank 2 is formed by connecting a steel plate, angle steel, steel bars and bolts 23, and a water inlet and outlet pipe 21 and a valve 22 are arranged on the side surface, so that the water quantity is conveniently controlled.
The submersible pump can be placed in the drainage ditch 5, so that the waste water can be discharged more efficiently.
The water level observation hole 6 is made by: five holes are formed in the steel wall of the box above the box bottom, an organic glass tube is hung on the outer wall of the box, water level scales are arranged on the tube wall, one section of the organic glass tube is bent and inserted into the hole of the box body, and the periphery of the hole is sealed.
Claims (6)
1. The utility model provides a multi-functional foundation ditch model test system equipment which characterized in that: comprises a model box system and a soil loading and unloading and loading system;
the model box system comprises a main box (1), a water tank (2) and an upper iron ladder and a lower iron ladder (8); the main box (1) is formed by connecting steel plates, organic glass, angle steel and bolts, the steel plates are assembled on two sides of the main box (1) and ribbed, a sealing strip is arranged at the joint, and the transparent organic glass whole plate is embedded in the steel plates to be used as an observation window (7); the water tank (2) is arranged on two sides of the main tank (1) and is separated from the main tank (1) by partition plates and partition clamping grooves, and the water tank (2) is formed by connecting steel plates, angle steel and bolts; the upper and lower iron ladders (8) are arranged at the rear side of the main box (1); a concrete base (4) is laid under the whole box body, and drainage channels (5) are arranged on two sides of the concrete base (4); water level observation holes (6) are equidistantly arranged on two sides of the main tank (1) and the water tank (2); the outer wall of the right water tank (2) is provided with a display system (3);
the loading, unloading and loading system comprises a soil piling field (9), a soil loading and unloading channel (10), an excavator (12), a movable steel beam frame and a pressurizing device; the soil piling field (9) is formed by connecting steel plates, angle steel and bolts, and one end of the soil piling field (9) is connected with a soil loading and unloading channel (10); the soil loading and unloading channel (10) is a belt type soil loading and unloading channel, a belt pulley is arranged at the upper end of the soil loading and unloading channel (10), the upper plane of the belt pulley is also used as a soil unloading platform, and the lower end of the soil loading and unloading channel (10) is erected to the high position of the soil yard (9) by a concrete pier (11); the movable steel beam frame consists of a steel column (13), a fixed I-steel main beam (15) and a movable I-steel cross beam (16), and a linear guide rail is arranged on the sliding side of the I-steel cross beam (16); the excavator (12) can move on the I-shaped steel beam (16); the pressurizing device comprises an oil jack (19) and a loading plate (17), the I-shaped steel beam (16) is respectively provided with the oil jack (19), the lower end of the oil jack (19) is fixed with the loading plate (17), and the oil jack (19) can slide on the I-shaped steel beam (16);
the water tanks are arranged on two sides of the main tank and are separated from the main tank by pervious concrete, and two sides of the pervious concrete are fixed by steel bars and bolts; the water tank is formed by connecting a steel plate, angle steel, steel bars and bolts, and a water inlet pipe, a water outlet pipe and a valve are arranged on the side surface of the water tank; a submersible pump is placed in the drainage ditch; the water level observation holes are five holes formed in the steel wall of the water tank above the bottom of the water tank, an organic glass tube is hung outside the water tank, the tube wall is provided with water level scales, one section of the organic glass tube is bent and inserted into the hole of the tank body, and the periphery of the hole is sealed.
2. The multifunctional foundation pit model test system equipment of claim 1, wherein: and a prefabricated tunnel model is pre-embedded in the main box (1) and monitoring elements are laid.
3. The multifunctional foundation pit model test system equipment of claim 1, wherein: the height of the upper and lower iron ladders (8) is consistent with that of the main box (1).
4. The multifunctional foundation pit model test system equipment of claim 1, wherein: and a concrete weight (14) is arranged at the bottom of the steel column (13), and the fixed part is connected by angle steel and bolts.
5. The multifunctional foundation pit model test system equipment of claim 1, wherein: the back side of the soil piling field (9) is provided with a data operating system (18), and the data operating system (18) comprises a computer display, a fiber grating monitoring system, a water pressure data monitoring system and a soil loading and unloading and loading control system.
6. The multifunctional foundation pit model test system equipment of claim 1, wherein: the excavator (12) is a small excavator which moves on an I-beam (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920490441.2U CN211057878U (en) | 2019-04-12 | 2019-04-12 | Multifunctional foundation pit model test system equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920490441.2U CN211057878U (en) | 2019-04-12 | 2019-04-12 | Multifunctional foundation pit model test system equipment |
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| Publication Number | Publication Date |
|---|---|
| CN211057878U true CN211057878U (en) | 2020-07-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920490441.2U Expired - Fee Related CN211057878U (en) | 2019-04-12 | 2019-04-12 | Multifunctional foundation pit model test system equipment |
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| Country | Link |
|---|---|
| CN (1) | CN211057878U (en) |
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2019
- 2019-04-12 CN CN201920490441.2U patent/CN211057878U/en not_active Expired - Fee Related
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Granted publication date: 20200721 Termination date: 20210412 |