A different plate width vacuum preloading indoor model test system

Abstract

The utility model discloses a different plate width vacuum preloading indoor model test system, including a plurality of model barrels, water gas separation tank, vacuum pump and distributed automatic acquisition system, a plurality of model barrels are connected with water gas separation tank respectively, and water gas separation tank is connected with vacuum pump, and the soft soil of same component is filled in every model barrel, every model barrel is wrapped barrel body, top cap, conversion joint and drainage body, and the drainage body width of every model barrel is all not same, top cap detachable mounting is in the top of barrel body, the top middle position of top cap is equipped with the mounting hole, and conversion joint passes through the installation component and installs in the mounting hole, and the drainage body is installed in the bottom of conversion joint through the joint, and the bottom of drainage body is inserted in the soft soil in the barrel body, and the top of conversion joint is connected with water gas separation tank through vacuum hose, the utility model discloses a plurality of model barrels are provided with one drainage plate of different width respectively, to study the influence of the drainage body of different width to the vacuum preloading reinforcement effect simultaneously.

Description

Technical Field

[0001] This utility model relates to the technical field of geotechnical engineering testing equipment, and in particular to a vacuum preloading indoor model testing system for different plate widths. Background Technology

[0002] Vacuum preloading, as an effective method for treating soft soil foundations, utilizes a drainage system within the foundation. The negative pressure generated by vacuuming removes water from the soil pores, increasing soil strength and thus achieving foundation reinforcement. This method boasts advantages such as simple construction, minimal impact on the surrounding environment, and significant reinforcement effects, and is widely used in soft soil foundation treatment, resulting in a relatively mature vacuum preloading reinforcement mechanism and calculation theory. The drainage system inserted into the soil is a crucial component in vacuum preloading; however, research on the influence of drainage board width on the reinforcement effect is limited. To obtain experimental data on drainage boards of different widths, model tests of vacuum preloading with dredged silt are needed.

[0003] Existing indoor model devices are mostly single model barrels, which can only study the effect of a fixed board width and cannot simultaneously compare the effects of drainage boards of different widths. If the experiment is carried out in stages, the experimental cycle will be too long, there will be too many uncontrollable factors, and the experimental results will be easily affected. Utility Model Content

[0004] The purpose of this application is to overcome the problems existing in the prior art and to provide a vacuum preloading indoor model test system for plates with different widths.

[0005] The technical solution adopted to achieve the purpose of this application is:

[0006] A vacuum preloading indoor model test system with different plate widths includes multiple model barrels, a water-air separation tank, a vacuum pump, and a distributed automatic acquisition system. The multiple model barrels are respectively connected to the water-air separation tank, and the water-air separation tank is connected to the vacuum pump. Each model barrel is filled with the same amount of soft soil.

[0007] Each model bucket consists of a bucket body, a top cover, a conversion connector, and a drain body. The width of the drain body varies for each model bucket. The top cover is detachably installed on the top of the bucket body. A mounting hole is located in the middle of the top of the top cover, and the conversion connector is installed in the mounting hole via a mounting assembly. The drain body is installed at the bottom of the conversion connector via a connector, and the bottom of the drain body is inserted into the soft soil inside the bucket body. The top of the conversion connector is connected to a water-air separator via a vacuum hose.

[0008] In the above technical solution, the installation component includes a sleeve block and a rubber block. The rubber block is installed inside the sleeve block, and the sleeve block is threaded into the mounting hole of the top cover. An insertion hole is provided in the middle position of the rubber block, and the adapter is inserted into the insertion hole.

[0009] In the above technical solution, the sleeve is a cylindrical structure with a hollow center.

[0010] In the above technical solution, the sleeve block is provided with external threads on its exterior; the mounting hole is provided with internal threads, and the sleeve block is threadedly installed in the mounting hole.

[0011] In the above technical solution, each barrel body has multiple mounting ears arranged at equal intervals along the circumference on its top side, and a screw is rotatably mounted on each mounting ear. Each top cover has multiple mounting holes corresponding to the screws arranged at equal intervals along the circumference on its side, and the screws are installed in the corresponding mounting holes. A butterfly nut is tightened on each screw.

[0012] In the above technical solution, both the barrel body and the top cover are made of transparent plexiglass.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. The vacuum preloading indoor model test system of this utility model includes multiple model barrels, each of which is equipped with a drainage plate of different widths. This allows for the simultaneous study of the influence of drainage bodies of different widths on the vacuum preloading reinforcement effect. The test cycle is short, the controllability of the test is enhanced, and the accuracy of the test results is improved.

[0015] 2. The sleeve of this utility model is equipped with a rubber block, which uses the rubber block to squeeze the adapter joint, thereby achieving an effective sealing effect. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the vacuum preloading indoor model test system with different plate widths described in this utility model.

[0018] Figure 2 This is a schematic diagram of the model barrel structure described in this utility model.

[0019] Figure 3 This is a schematic diagram of the internal structure of the model barrel described in this utility model.

[0020] Figure 4 This is a schematic diagram of the disassembled structure of the barrel body and top cover of the model barrel described in this utility model.

[0021] In the diagram: 1-Model barrel; 101-Barrel body; 102-Top cover; 103-Converter; 104-Drainage body; 105-Mounting hole; 106-Mounting ear; 107-Screw; 108-Butterfly nut; 2-Water-air separator; 3-Vacuum pump; 4-Distributed automatic acquisition system; 5-Connector; 6-Mounting component; 601-Sleeve block; 602-Rubber block. Detailed Implementation

[0022] To enable those skilled in the art to better understand the present invention, the technical solution of the present invention will be further described below with reference to specific embodiments.

[0023] To address the limitation of existing technologies in simultaneously comparing and analyzing the effect of drainage board width, this invention provides a vacuum preloading indoor model test system for different board widths. (See [link to relevant documentation]). Figure 1 This includes multiple model buckets 1 (see Figure 1 The present invention preferably comprises 4 model barrels 1, a water-air separation tank 2, a vacuum pump 3, and a distributed automatic acquisition system 4. Multiple model barrels 1 are connected to the water-air separation tank 2 via vacuum hoses, and the water-air separation tank 2 is connected to the vacuum pump 3. Each model barrel 1 is filled with the same amount of soft soil, and a pore water pressure gauge is installed inside the soft soil to monitor the pore water pressure. Settlement monitoring points are set on the soft soil, and a level and a vacuum gauge are installed inside the model barrel 1. The level is used to monitor the settlement elevation of the soft soil, thereby obtaining the settlement amount, and the vacuum level is used to monitor the vacuum degree inside the barrel 101. The distributed automatic acquisition system 4 is electrically connected to the pore water pressure gauge, the level, and the vacuum gauge to automatically collect the monitoring data. The distributed automatic acquisition system 4 sends the collected monitoring data to the controller, which controls the start and stop of the vacuum pump 3 based on the monitoring data.

[0024] Each model barrel 1 includes a barrel body 101, a top cover 102, a conversion connector 103, and a drain body 104 (in this embodiment, the drain body 104 is preferably a plastic drain board). The width of the drain body 104 in each model barrel 1 is different, so as to compare the influence of different widths of drain bodies 104 on the vacuum pre-compression reinforcement effect through test results. The barrel 101 is filled with soft soil. The top cover 102 is detachably installed on the top of the barrel 101 to seal the top of the barrel 101. The top of the top cover 102 has a mounting hole 105 in the middle. The adapter 103 is installed in the mounting hole 105 through the mounting component 6. The mounting hole 105 has an internal thread, and the mounting component 6 has an external thread so that the mounting component 6 is threaded into the mounting hole 105. The drain body 104 is installed at the bottom of the adapter 103 through the connector 5. The bottom of the drain body 104 is inserted into the soft soil inside the barrel 101. The top of the adapter 103 is connected to the water-air separator 2 through a vacuum hose.

[0025] Furthermore, the mounting component 6 includes a sleeve 601 and a rubber block 602 (the sleeve 601 is a cylindrical structure with a hollow center so that the rubber block 602 can be installed inside the sleeve 601; the sleeve 601 has external threads so that it can be threaded into the mounting hole 105). The rubber block 602 is installed inside the sleeve 601, and the sleeve 601 is threaded into the mounting hole 105 of the top cover 102. An insertion hole is provided in the middle of the rubber block 602, and the adapter 103 is inserted into the insertion hole. The compression of the adapter 103 by the rubber block 602 can achieve an effective sealing effect.

[0026] To enable the detachable installation of the top cover 102 and the barrel body 101, each barrel body 101 has multiple mounting ears 106 evenly spaced along the circumferential direction on its top side. Each mounting ear 106 is rotatably mounted with a screw 107. Each top cover has multiple mounting holes corresponding to the screw 107 evenly spaced along the circumferential direction on its side. After the screw 107 is installed in the corresponding mounting hole, a butterfly nut 108 is tightened on each screw 107 to achieve the installation of the barrel body 101 and the top cover 102.

[0027] Furthermore, both the barrel 101 and the top cover 102 are made of transparent plexiglass to allow direct observation of the degree of soil consolidation changes inside the barrel 101 during the experiment.

[0028] The test method based on the indoor model test system for vacuum preloading of different plate widths includes the following steps:

[0029] Step 1: Assemble multiple model barrels 1 to obtain multiple sealed model barrels 1. Connect the top of the adapter 103 to the water-gas separator 2 through vacuum hoses. Then connect the water-gas separator 2 to the vacuum pump 3.

[0030] Step 2: The vacuum pump 3 is started by the controller to evacuate multiple model barrels 1, so that the pore water in the soft soil inside the barrel 101 enters the water-air separation tank 2 through the drainage body 104, and water-air separation is performed by the water-air separation tank 2.

[0031] Step 3: During the vacuuming process of model barrel 1, the pore water pressure in the soft soil, the settlement of the soft soil, and the vacuum degree in barrel 101 are monitored in real time by pore water pressure gauge, level, and vacuum gauge. The distributed automatic acquisition system 4 automatically collects data such as pore water pressure in the soft soil, settlement of the soft soil, and vacuum degree in barrel 101.

[0032] Step 5: The staff compares and analyzes the data collected by the distributed automatic acquisition system 4, and selects the drainage body 104 corresponding to the best test data as the drainage body for vacuum preloading reinforcement.

[0033] For ease of explanation, spatial relative terms such as “up,” “down,” “left,” and “right” are used in the embodiments to describe the relationship of one element or feature shown in the figures relative to another element or feature. It should be understood that, in addition to the orientations shown in the figures, spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figures is inverted, an element described as being “down” of other elements or features would be positioned “up” of those other elements or features. Therefore, the exemplary term “down” can encompass both up and down orientations. The device may be positioned in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0034] Moreover, relational terms such as “first” and “second” are used merely to distinguish one component from another that has the same name, without necessarily requiring or implying any such actual relationship or order between the components.

[0035] The above description is only a preferred embodiment of the present utility model. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A vacuum preloading indoor model test system for plates of different widths, characterized in that, It includes multiple model barrels, a water-air separation tank, a vacuum pump, and a distributed automatic acquisition system. The multiple model barrels are connected to the water-air separation tank, which is connected to the vacuum pump. Each model barrel is filled with the same amount of soft soil. Each model bucket consists of a bucket body, a top cover, a conversion connector, and a drain body. The width of the drain body varies for each model bucket. The top cover is detachably installed on the top of the bucket body. A mounting hole is located in the middle of the top of the top cover, and the conversion connector is installed in the mounting hole via a mounting assembly. The drain body is installed at the bottom of the conversion connector via a connector, and the bottom of the drain body is inserted into the soft soil inside the bucket body. The top of the conversion connector is connected to a water-air separator via a vacuum hose.

2. The vacuum preloading indoor model test system for different plate widths according to claim 1, characterized in that, The mounting assembly includes a sleeve and a rubber block. The rubber block is installed inside the sleeve, and the sleeve is threaded into the mounting hole of the top cover. A socket is provided in the middle of the rubber block, and the adapter is inserted into the socket.

3. The vacuum preloading indoor model test system for different plate widths according to claim 2, characterized in that, The sleeve is a cylindrical structure with a hollow center.

4. The vacuum preloading indoor model test system for different plate widths according to claim 2, characterized in that, The sleeve has external threads on its exterior and internal threads in its mounting hole. The sleeve is threadedly installed in the mounting hole.

5. The vacuum preloading indoor model test system for different plate widths according to claim 1, characterized in that, Each barrel has multiple mounting ears evenly spaced along the circumference on its top side, and a screw is rotatably mounted on each mounting ear. Each top cover has multiple mounting holes evenly spaced along the circumference on its side, corresponding to the screws. The screws are installed in the corresponding mounting holes, and a butterfly nut is tightened on each screw.

6. The vacuum preloading indoor model test system for different plate widths according to claim 1, characterized in that, The barrel body and top cover are both made of transparent acrylic glass.

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