Revolving door type expandable deformation soil body and structure interaction test method

Abstract

The invention relates to a revolving door type expandable deformation soil body and structure interaction test method, and belongs to the technical field of building construction. Through the expandable test box body and the precisely controlled soil deformation simulation device, efficient research on interaction of different size structures and deformed soil is realized. The test box body adopts a transparent PVC side plate and a steel frame structure, has a revolving door type connection function, can flexibly expand the length or width according to test requirements, and meets the space requirements of different test objects such as pipelines, building structures and the like. The movable bottom plate is connected through a spherical hinge and is matched with a jack control system, so that various soil body subsidence types can be accurately simulated. The test method comprises the steps of platform expansion, soil body laying, structure placement, deformation simulation, data recording and the like. Through flexible expansion and deformation control, an ideal test tool is provided for research on interaction of the soil body and the structure, the test efficiency and the data accuracy are improved, and important engineering application value is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to a revolving door type test method for interaction between expandable and deformable soil and a structure. Background Art

[0002] In construction projects, soil deformation due to mining, mining or tunnel excavation will cause damage to superstructures such as building structures, pipelines, roads, transmission towers and other infrastructure, seriously affecting people's lives and property. Therefore, the study of the interaction between deformed soil and structure is of great significance. At present, the test device for studying the interaction between soil and structure is mainly aimed at a certain specific structure, and its size is also matched with it and is relatively fixed. This fixed-size test device often needs to be redesigned and rebuilt when facing different types of test requirements, which not only consumes a lot of time and energy, but also increases the test cost. Therefore, designing a test device that can be expanded in size is of great practical significance. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies in the prior art and to provide a revolving door type expandable deformable soil and structure interaction test device and method, which, through an expandable test box and a precisely controlled soil deformation device, achieves the purpose of meeting various test needs, accurately simulating soil deformation, and efficiently conducting experimental research.

[0004] To achieve the above object, the present invention provides a revolving door type expandable deformable soil and structure interaction test method, comprising the following steps:

[0005] Test device preparation: according to the test requirements, determine whether the test device needs to be expanded, and select the corresponding expansion form. The expansion form of the test device includes expansion in the length direction and expansion in the width direction;

[0006] Laying rubber sheet: Lay rubber sheet on the movable bottom plate of the test box to prevent soil from leaking from the bottom;

[0007] Structural model placement: Place the test soil evenly on the movable bottom plate, and place the corresponding structural model according to the test type;

[0008] Soil deformation simulation: The control system of the soil deformation control device controls the jack to lift the movable bottom plate, and the lifting height of the jack is adjusted according to the preset soil deformation requirements to realize soil deformation simulation;

[0009] Test observation and data recording: During the test, the soil deformation is observed using a transparent plate, and the relevant data is recorded in real time using measuring instruments;

[0010] Test end processing: After the test, turn off the jack and the control system, restore the movable bottom plate to its original position, take out the structural model, and clean the soil on the test box and the movable bottom plate.

[0011] Further, the step of expanding in the length direction includes:

[0012] Open the side plate connecting piece in the upper right direction of the test box;

[0013] The rear side plate rotates 90° clockwise around the rotating shaft;

[0014] Adjust the position of the test box, and fix the opened side plate with connecting steel plates and connecting bolts.

[0015] Further, the step of expanding in the width direction includes:

[0016] Open the side plate connecting piece in the lower left direction of the test box;

[0017] The left side plate rotates 90° counterclockwise around the rotating shaft;

[0018] Adjust the position of the test box, and fix the opened side plate with connecting steel plates and connecting bolts.

[0019] Further, the measuring instruments include displacement sensors, pressure sensors, and strain gauges.

[0020] Further, the structural model is a pipeline model or a building structure model.

[0021] Further, a rotary door type expandable and deformable soil-structure interaction test device, which is used to implement the rotary door type expandable and deformable soil-structure interaction test method according to any one of claims 1-5, includes:

[0022] A test box, including side plates, a movable bottom plate, a rotating shaft, and connecting pieces for connecting the side plates. The side plates include steel frames and transparent plates installed between the steel frames. The movable bottom plate is divided into multiple movable plates, and the multiple movable plates are connected by spherical hinges, and long grooves are opened at the spherical hinge joints to adapt to different jacking heights between different movable plates; there are four side plates, namely the left side plate, the right side plate, the front side plate, and the rear side plate; among them, a plurality of rotating shafts are welded at equal distances between the rear side plate and the left side plate;

[0023] A soil deformation control device, including a jack and a control system, and the control system is used to control the jacking of the movable bottom plate to simulate soil deformation.

[0024] Further, the bottom plate connecting piece includes a spherical hinge and a second bolt. The movable bottom plates are connected by the spherical hinge, and the second bolt is placed in the long groove.

[0025] Furthermore, a rubber plate is laid on the movable plate to prevent the soil from leaking out from the bottom.

[0026] Furthermore, the test box body is spliced and extended by two box bodies, and the size after splicing can meet different test requirements.

[0027] Furthermore, the connecting piece includes: an outer side plate connecting piece, an inner side plate connecting piece and a first bolt, and the outer side plate connecting piece and the inner side plate connecting piece are fixed by the first bolt.

[0028] Compared with the prior art, the beneficial effects achieved by the present invention are as follows:

[0029] (1) By setting up the rotating door type structure, the present invention realizes the flexible expansion or contraction of the test box body in the length and width directions, without the need to redesign and build the test device, enabling the same platform to adapt to various soil-structure interaction tests with different sizes, from pipelines to building structures, greatly improving the versatility and application range of the test equipment, reducing the cost of purchasing new equipment due to specific requirements, and simplifying the test preparation process at the same time.

[0030] (2) The present invention uses a jack and its control system to precisely control the movable bottom plate, and can accurately simulate the deformation of the soil body, including complex settlement types. The design of the transparent PVC side plates allows researchers to directly observe the internal soil changes, and combined with measurement tools such as displacement sensors and pressure sensors, it ensures real-time and accurate data recording, thereby providing scientific and reliable data support for research and improving the accuracy and consistency of test results.

[0031] (3) Through the modular component connection method of the present invention, such as bolt fixation and rotating shaft connection, it not only simplifies the assembly and disassembly of the test device, but also facilitates transportation and storage, effectively reducing the labor cost and time cost of the test. In addition, the expandable characteristic of this platform avoids repeated construction, reduces resource waste, conforms to the development concept of energy conservation and emission reduction, and has significant economic benefits and social value.

[0032] (4) The test device provided by the present invention is not only applicable to static tests in the laboratory, but can also be modified into a mobile device for on-site monitoring or dynamic testing in emergency response according to needs, showing good environmental adaptability. As an ideal scientific research platform, it promotes scientific research and technological development in the field of interaction between deformed soil and structure, helps to promote the development of relevant theories and the application practice of new protection measures and construction technologies, and provides strong support for solving practical engineering problems.

[0033] In summary, the test device provided by the present invention, with its unique design and technical advantages, not only improves test efficiency and ensures test accuracy, but also greatly reduces test costs, showing broad application prospects and important scientific research value.

[0034] The test device and method of the present invention provide an ideal test tool for the study of the interaction between deformed soil and structure, which can effectively improve the test efficiency and data accuracy, and is of great significance for promoting the technical development in the field of construction engineering. The test device provided by the present invention has its unique design and technical advantages, which can improve the test efficiency and ensure the test accuracy, while also greatly reducing the test cost, showing a wide range of application prospects and important scientific research value. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 A schematic flow chart of a revolving door type extensible deformable soil-structure interaction test method provided by an embodiment of the present invention;

[0036] Figure 2 An overall schematic diagram of a revolving door type extensible deformable soil-structure interaction test method provided by an embodiment of the present invention;

[0037] Figure 3 A front view of a revolving door type expandable and deformable soil-structure interaction test device provided by an embodiment of the present invention;

[0038] Figure 4 A top view of a revolving door type expandable and deformable soil-structure interaction test device provided by an embodiment of the present invention;

[0039] Figure 5 A schematic diagram of the expansion in the length direction of the revolving door type extensible deformable soil and structure interaction test method provided by an embodiment of the present invention;

[0040] Figure 6 A schematic diagram of the expansion in the width direction of the revolving door type extensible deformable soil and structure interaction test method provided by an embodiment of the present invention;

[0041] Figure 7 A schematic diagram of a bottom plate connection member in a revolving door type expandable and deformable soil-structure interaction test device provided in an embodiment of the present invention;

[0042] Figure 8 A comparison diagram of the settlement curve of the movable bottom plate and the theoretical curve when there are 4 movable plates in the test using the revolving door type expandable deformable soil and structure interaction test device of the present invention;

[0043] Figure 9During the test using the rotary door type expandable and deformable soil-structure interaction test device of the present invention, when there are 5 movable plates, the comparison diagram of the settlement curve of the movable bottom plate and the theoretical curve;

[0044] Figure 10 During the test using the rotary door type expandable and deformable soil-structure interaction test device of the present invention, when there are 7 movable plates, the comparison diagram of the settlement curve of the movable bottom plate and the theoretical curve;

[0045] Figure 11 During the test using the rotary door type expandable and deformable soil-structure interaction test device of the present invention, when there are 8 movable plates, the comparison diagram of the settlement curve of the movable bottom plate and the theoretical curve;

[0046] Label description: 1-1, transparent plate; 1-2, steel frame; 2-1, outer side plate connector; 2-2, inner side plate connector; 2-3, first bolt; 3, rotating shaft; 4, jack; 5, movable bottom plate; 5-1, long groove; 6, bottom plate connector; 6-1, spherical hinge; 6-2, second bolt; 7-1, connecting steel plate; 7-2, connecting bolt. Detailed implementation mode

[0047] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention, and cannot be used to limit the protection scope of the present invention.

[0048] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "axial direction", "lateral direction", "upper", "lower", "left", "right", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0049] In the description of the invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] As Figures 1 to 7 shown, the present invention provides a test method for the interaction between a rotating door type expandable deformable soil body and a structure, which specifically includes the following steps:

[0051] Test platform preparation: According to the test requirements, determine whether the test platform needs to be expanded and select the corresponding expansion form. If a test on the interaction between a pipeline and a soil body is to be carried out and a large length space is required, expand in the length direction according to the steps of length direction expansion; if a test on the interaction between a building structure and a soil body is to be carried out and a large width space is required, expand in the width direction according to the steps of width direction expansion.

[0052] Laying rubber sheets: Lay rubber sheets on the movable bottom plate 5 of the test box to prevent the soil from leaking out from the bottom.

[0053] Placement of the structure model: Evenly place the prepared test soil body on the movable bottom plate 5, paying attention to the laying thickness and evenness of the soil body to ensure the accuracy of the test; if a test on the interaction between a pipeline and a soil body is to be carried out, place the pipeline to be tested in the soil according to the test design requirements; if a test on the interaction between a building structure and a soil body is to be carried out, place the simulated building structure model at a suitable position on the soil surface.

[0054] Soil deformation simulation: Through the control system of the soil deformation control device, operate the jack 4 to lift the movable bottom plate 5. Adjust the lifting height of each jack 4 according to the preset soil deformation requirements of the test.

[0055] Test observation and data recording: During the test, observe the soil deformation situation through the transparent plate, and use measuring instruments such as displacement sensors and pressure sensors to record in real time data such as the deformation amount of the soil body and the pressure received by the structure for subsequent analysis.

[0056] Test end processing: After the test is completed, turn off the jack 4 and the control system to return the movable bottom plate 5 to its original position. Carefully take out the test structure, clean the soil on the test box and the movable bottom plate 5, and perform maintenance on the test platform for future use.

[0057] Specifically, the steps of length direction expansion include:

[0058] Open the side plate connectors in the upper right direction of the two test boxes;

[0059] The rear side plate rotates 90° clockwise around the rotating shaft 3;

[0060] Adjust the positions of the two test boxes, and fix the opened side plates with connecting steel plates 7-1 and connecting bolts 7-2.

[0061] Specifically, the steps of expanding in the width direction include:

[0062] Open the side plate connectors in the lower left direction of the two test boxes;

[0063] The left side plate rotates 90° counterclockwise around the rotating shaft 3;

[0064] Adjust the positions of the two test boxes, and fix the opened side plates with connecting steel plates 7-1 and connecting bolts 7-2.

[0065] Furthermore, the measuring instruments include displacement sensors, pressure sensors, and strain gauges.

[0066] Specifically, the structural model is a pipeline model or a building structure model.

[0067] As an embodiment, the present invention also provides a rotary door type expandable and deformable soil-structure interaction test device, including:

[0068] Test boxes, including side plates, movable bottom plates 5, rotating shafts 3, and connectors for connecting the side plates. The side plates include steel frames 1-2 and transparent plates 1-1 installed between the steel frames 1-2. The movable bottom plate 5 is divided into multiple movable plates, and the multiple movable plates are connected by bottom plate connectors 6. Each movable plate is provided with multiple long slots 5-1 corresponding to the bottom plate connectors 6 to adapt to different lifting heights between different movable plates 5, so as to realize the application of different soil settlement types; there are four side plates, namely the left side plate, the right side plate, the front side plate, and the rear side plate; among them, multiple rotating shafts 3 are welded at equal distances between the rear side plate and the left side plate;

[0069] Soil deformation control device, including a jack 4 and a control system. The control system is used to control the lifting of the movable bottom plate 5 to simulate soil deformation.

[0070] Specifically, the test boxes are spliced and expanded by two boxes, and the size after splicing can meet different test requirements;

[0071] Specifically, the bottom plate connector 6 includes a ball hinge 6-1 and a second bolt 6-2. The movable bottom plates 5 are connected by the ball hinge 6-1, and the movable bottom plates 5 are provided with long slots 5-1 corresponding to the joints of the ball hinge 6-1. When connecting, the second bolt 6-2 is placed in the long slot 5-1. The ball hinge 6-1 can enable the movable bottom plates 5 to rotate, and the second bolt 6-2 slides in the long slot 5-1 to generate a relative horizontal displacement between the movable bottom plates 5, so as to adapt to the different jacking heights between different movable plates, thereby realizing the application of different soil subsidence types.

[0072] The connector includes: an outer side plate connector 2-1, an inner side plate connector 2-2, and a first bolt 2-3. The outer side plate connector 2-1 and the inner side plate connector 2-2 are fixed by the first bolt 2-3. The outer side plate connector 2-1 is specifically an outer angle steel, and the inner side plate connector 2-2 is specifically an inner angle steel.

[0073] Preferably, a rubber plate is laid on the movable plate to prevent the soil from leaking out from the bottom.

[0074] Example of test curve:

[0075] As Figures 8 to 11 shown, for the comparison between the vertical deformation of the movable bottom plate and the theoretical curve in the test, the number of movable plates is 4, 5, 7, and 8 respectively, divided into 1-5 stages. For example, s-1 is the test curve and l-1 is the theoretical curve. It can be seen that as the number of movable plates increases, the settlement curve of the movable bottom plate 5 becomes more and more consistent with the theoretical curve.

[0076] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0077] The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and deformations can be made, and these improvements and deformations should also be regarded as the protection scope of the present invention.

Claims

1. A test method for the interaction between a rotatable door-type expandable and deformable soil mass and a structure, characterized in that The following steps are involved: Test device preparation: according to the test requirements, determine whether the test device needs to be expanded, and select the corresponding expansion form. The expansion form of the test device includes expansion in the length direction and expansion in the width direction; Laying rubber sheet: Lay rubber sheet on the movable bottom plate of the test box to prevent soil from leaking from the bottom; Structural model placement: Place the test soil evenly on the movable bottom plate, and place the corresponding structural model according to the test type; Soil deformation simulation: The control system of the soil deformation control device controls the jack to lift the movable bottom plate, and the lifting height of the jack is adjusted according to the preset soil deformation requirements to realize soil deformation simulation; Test observation and data recording: During the test, the soil deformation is observed using a transparent plate, and the relevant data is recorded in real time using measuring instruments; End of test processing: After the test, turn off the jack and control system, restore the movable floor to its original position, take out the structural model and clean the soil on the test box and the movable floor.

2. The test method for the interaction between a revolving door type expandable and deformable soil mass and a structure according to claim 1, wherein The step of extending in the length direction comprises: Open the side panel connector on the upper right side of the test chamber; The rear side panel rotates 90° clockwise around the axis of rotation; Adjust the position of the test box and fix the opened side panels with connecting steel plates and connecting bolts.

3. The test method for the interaction between a revolving door type expandable and deformable soil mass and a structure according to claim 1, characterized in that The step of expanding in the width direction comprises: Open the side panel connector on the lower left side of the test chamber; The left side panel rotates 90° counterclockwise around the axis of rotation; Adjust the position of the test box and fix the opened side panels with connecting steel plates and connecting bolts.

4. The test method for the interaction between a rotating door - type expandable deformable soil mass and a structure according to claim 1, wherein, The measuring instrument comprises a displacement sensor, a pressure sensor and a strain gauge.

5. The test method for the interaction between a rotating door type expandable deformable soil mass and a structure according to claim 1, characterized in that, The structural model is a pipeline model or a building structure model.

6. A rotary door type expandable and deformable soil-structure interaction test device, which is used to implement the rotary door type expandable and deformable soil-structure interaction test method according to any one of claims 1-5, and is characterized in that, include: The test box includes a side panel, a movable bottom panel, a rotating shaft and a connecting piece for connecting the side panels. The side panel includes a steel frame and a transparent panel installed between the steel frames. The movable bottom panel is divided into a plurality of movable panels. The plurality of movable panels are connected by ball joints, and a long groove is provided at the connection of the ball joints to adapt to the different lifting heights between different movable panels. There are four side panels, namely a left side panel, a right side panel, a front side panel and a rear side panel. Among them, a plurality of rotating shafts are equidistantly welded between the rear side panel and the left side panel. The soil deformation control device comprises a jack and a control system, wherein the control system is used for controlling the lifting of the movable bottom plate to realize soil deformation simulation.

7. According to the revolving door type expandable deformable soil and structure interaction test device of claim 6, the bottom plate connecting member includes a ball joint and a second bolt, the movable bottom plates are connected by the ball joint, and the second bolt is placed in the long groove.

8. The rotary door type expandable and deformable soil-structure interaction test device according to claim 6, characterized in that, The movable plate is paved with a rubber sheet to prevent soil from leaking out from the bottom.

9. The rotary-door type expandable and deformable soil-structure interaction test device according to claim 6, wherein The test box is expanded by splicing two boxes, and the size after splicing can meet different test requirements.

10. The rotary door type expandable and deformable soil-structure interaction test device according to claim 6, wherein, The connecting member comprises: a side panel outer connecting member, a side panel inner connecting member and a first bolt, and the side panel outer connecting member and the side panel inner connecting member are fixed by the first bolt.

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