Height-adjustable tensile-resistant double-layer foundation building structure test model

Abstract

The present invention relates to the technical field of research on vibration reduction of building structures, and provides a height-adjustable pull-out-resistant double-layer foundation building structure test model, including: a building model, a supporting structure, a movable connecting member and a vibration-damping cushion layer. The building model includes a building foundation, and the building foundation includes a first foundation bottom plate and a second foundation bottom plate arranged at intervals; the supporting structure is arranged below the first foundation bottom plate and defines a support cavity between the first foundation bottom plate; the movable connecting member includes an anti-slipping portion suspended in the support cavity and a connecting portion connected to the anti-slipping portion and the second foundation bottom plate respectively; the vibration-damping cushion layer is arranged in the support cavity and between the supporting structure and the second foundation bottom plate. The test model can adjust the spacing between the first foundation bottom plate and the second foundation bottom plate by adjusting the movable connecting member to perform a limited displacement lifting movement in the support cavity, so as to simulate the actual compressive stress under the actual counterweight, and then simulate and test the vibration reduction efficiency of the vibration-damping cushion layer under different compressive stresses.

Description

Technical Field

[0001] The invention relates to the technical field of building structure vibration reduction research, in particular to a height-adjustable pull-out resistant double-layer foundation building structure test model. Background Art

[0002] At present, some projects are located in areas with shallow groundwater levels or deep buried box foundation rafts. The bottom surface of the building foundation is often below the groundwater level. In addition, due to the low number of building structures, the unit weight of the structure is small, so anti-floating design needs to be considered. The commonly used anti-floating design is pull-out piles. The vertical setting of pull-out piles will inevitably expand the original two-dimensional plane box foundation raft base surface in the three-dimensional direction, making it difficult to suspend the target building. In addition, for pile foundation areas, vibration reduction treatment of the foundation also faces similar problems.

[0003] For these two types of problems, a feasible approach is to adopt an innovative system of piston-type pull-out piles to overcome the technical difficulty of suspending the target building after adopting anti-floating piles. However, whether this system can achieve the expected effect according to the design plan, the most effective way is to use shaking table model tests or in-situ model tests. Therefore, it is urgent to design an experimental model that is feasible and can represent the core idea of ​​the system. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a height-adjustable pull-out double-layer foundation building structure test model, which includes a first foundation bottom plate and a second foundation bottom plate spaced apart from the first foundation bottom plate, by arranging a support cavity at the bottom of the first foundation bottom plate, and suspending one end of the movable connection member in the support cavity, and connecting the other end to the second foundation bottom plate, and by arranging a vibration-damping pad in the support cavity and between the support structure and the second foundation bottom plate, the movable connection member can perform a limited displacement lifting movement in the support cavity, and at the same time can adjust the spacing between the first foundation bottom plate and the second foundation bottom plate, so as to achieve different nominal compressive stresses of the vibration-damping pad under different clamping degrees, so as to simulate the actual compressive stress under the actual counterweight, and then simulate and test the vibration reduction efficiency of the vibration-damping pad under different compressive stresses.

[0005] The present invention provides a height-adjustable pull-out-resistant double-layer foundation building structure test model, comprising: a building model, comprising a building foundation, the building foundation comprising a first foundation bottom plate and a second foundation bottom plate arranged below the first foundation bottom plate and spaced from the first foundation bottom plate; a supporting structure, the supporting structure is arranged below the first foundation bottom plate and defines a supporting cavity between the supporting structure and the first foundation bottom plate; a movable connecting member, comprising an anti-slip portion and a connecting portion, so that the anti-slip portion is suspended in the supporting cavity, one end of the connecting portion is connected to the anti-slip portion, and the other end is connected to the second foundation bottom plate; a vibration-damping pad layer, the vibration-damping pad layer is arranged in the supporting cavity and between the supporting structure and the second foundation bottom plate; wherein the movable connecting member is suitable for lifting and lowering relative to the supporting cavity and adjusting the distance between the first foundation bottom plate and the second foundation bottom plate to simulate the vibration-damping efficiency of the vibration-damping pad layer under different pressures.

[0006] The height-adjustable pull-out-resistant double-layer foundation building structure test model provided by the present invention comprises: a building model, a support structure, a movable connecting member and a vibration-damping cushion layer. The building model comprises a building base, and the building base comprises a first foundation bottom plate and a second foundation bottom plate arranged below the first foundation bottom plate, and the second foundation bottom plate is arranged at a distance from the first foundation bottom plate, and is used to arrange the vibration-damping cushion layer. The support structure is arranged below the first foundation bottom plate, and a support cavity is defined between the support structure and the first foundation bottom plate. By arranging the anti-detachment part of the movable connecting member in the support cavity and connecting the other end to the second foundation bottom plate, an anti-pulling effect is played to prevent the movable connecting member and the second foundation bottom plate from being separated from the first foundation bottom plate. The vibration-damping cushion layer is arranged in the support cavity and between the support structure and the second foundation bottom plate. By controlling the movable connecting member to perform a limited displacement lifting movement relative to the support cavity, the spacing between the first foundation bottom plate and the second foundation bottom plate can be adjusted, so that the clamping degree of the vibration-damping cushion layer can be adjusted, and then the nominal compressive stress of the vibration-damping cushion layer can be converted into the nominal compressive stress of the vibration-damping cushion layer through different clamping degrees to simulate the actual compressive stress of the vibration-damping cushion layer under actual counterweight. The test model is not only simple in structure, but also can effectively reduce the system weight and the load of the experimental system, making it easier to analyze and study the vibration reduction efficiency of the vibration-damping cushion under different pressures.

[0007] According to one embodiment of the present invention, the supporting structure includes: a supporting base plate, a first side plate, a second side plate, a third side plate and a fourth side plate arranged around the base plate, wherein a gap is provided between the supporting base plate and the first basic base plate, and the first side plate, the second side plate, the third side plate and the fourth side plate are respectively connected to the bottom of the first basic base plate to define the supporting cavity.

[0008] The supporting structure includes a supporting base plate and a first side plate, a second side plate, a third side plate and a fourth side plate which are arranged around the base plate, and the first side plate to the fourth side plate are all connected to the bottom of the first basic base plate, thereby defining a supporting cavity, and the supporting cavity is filled with a vibration-damping pad layer, and one end of the movable connecting member is arranged in the supporting cavity to prevent the vibration-damping pad layer or the movable connecting member from detaching from the supporting structure.

[0009] According to one embodiment of the present invention, the support structure also includes a first support plate, a second support plate, a third support plate and a fourth support plate arranged in the support cavity, the first support plate, the second support plate, the third support plate and the fourth support plate are arranged around the support base plate and connected in sequence to define an installation cavity between the first basic base plate, and the anti-detachment portion of the movable connection member is arranged in the installation cavity.

[0010] A first support plate, a second support plate, a third support plate and a fourth support plate which are arranged on the support base plate and are connected in sequence are provided in the support cavity, and an installation cavity is defined between the first support plate, the second support plate, the third support plate and the fourth support plate and the first basic base plate. By suspending the anti-detachment part of the movable connecting member in the installation cavity and filling the installation cavity with vibration isolation material, the reliability and stability of the installation of the movable connecting member are further improved.

[0011] According to an embodiment of the present invention, at least one of the first support plate, the second support plate, the third support plate and the fourth support plate is detachably connected to the support base plate.

[0012] By making at least one of the first support plate, the second support plate, the third support plate and the fourth support plate detachably connected to the support base plate, at least one support plate is detached from the support base plate, and after one end of the movable connecting member is arranged in the supporting cavity, the support plate is connected to the support base plate to facilitate the installation of the movable connecting member.

[0013] According to one embodiment of the present invention, the support bottom plate is provided with a limiting groove, and the limiting groove is adapted to the thickness of at least one of the first support plate, the second support plate, the third support plate and the fourth support plate, so that at least one of the first support plate, the second support plate, the third support plate and the fourth support plate is suitable for a tight fit connection with the limiting groove.

[0014] By setting a limit groove on the support base plate, and the limit groove is adapted to the thickness of at least one of the first support plate, the second support plate, the third support plate and the fourth support plate, at least one of the first support plate to the fourth support plate is tightly connected to the limit groove, which helps to improve the reliability and stability of the connection and facilitates installation and disassembly.

[0015] According to an embodiment of the present invention, the supporting base plate is provided with an opening portion, the opening portion is at least partially located in the installation cavity, and the anti-slip portion is suitable for being disposed in the installation cavity through the opening portion.

[0016] An opening is provided on the support base plate, and the opening is arranged corresponding to the support plate that can be tightly connected with the limiting groove. When installing the movable connecting piece, first remove the support plate arranged corresponding to the opening, then arrange the anti-detachment part of the movable connecting piece in the installation cavity through the opening, and finally, connect the support plate tightly with the limiting groove to complete the installation of the movable connecting piece, thereby improving the installation efficiency of the movable connecting piece.

[0017] In some embodiments, the anti-detachment part includes an anti-detachment cap, and the connecting part includes a connecting column, wherein the anti-detachment part is arranged in the installation cavity, the outer diameter of the connecting column is adapted to the size of the opening part, the outer diameter of the anti-detachment part is larger than the outer diameter of the connecting column, the connecting column is provided with an external thread, the second base plate is provided with an internal thread, and the connecting column is threadedly connected to the second base plate.

[0018] The anti-slip part includes an anti-slip cap (such as a bolt cap or a flange protruding from the outer diameter of the connecting part), and the connecting part includes a connecting column, the outer diameter of the connecting column is adapted to the size of the opening (that is, the opening can allow the connecting column to pass through for installation), and by setting the outer diameter of the anti-slip cap to be larger than the outer diameter of the connecting column, when the anti-slip cap is arranged in the installation cavity, the anti-slip cap acts as a stopper, effectively preventing the movable connecting part from escaping from the support cavity from the opening. Then, by threading the connecting column with the second basic bottom plate, the connecting column can adjust the spacing between the second basic bottom plate and the first basic bottom plate by rotating forward or reversely along the thread direction, thereby simulating the adjustment of the compressive stress of the vibration-damping pad layer arranged between the first basic bottom plate and the second basic bottom plate, and then facilitating the research and analysis of the vibration reduction efficiency of the vibration-damping pad layer.

[0019] Specifically, the change d in the spacing between the second base plate and the first base plate can be adjusted by rotating the connecting column forward or backward (when the elastic cushion layer and the second base plate and the first base plate are just in contact, the spacing between the first base plate and the second base plate is d1, and the spacing between the second base plate and the first base plate after the connecting column thread adjustment is d2, and the spacing change is d=d1d2), which can be obtained by a vernier caliper. And using the known elastic modulus E of the elastic cushion layer between the second base plate and the first base plate, the compressive stress of the elastic cushion layer is obtained by Hooke's law. The compressive stress calculation formula is as follows:

[0020] σ=E×(d / d1)

[0021] In some embodiments, the number of the installation cavities is multiple, and the multiple installation cavities are symmetrically arranged in two groups below the first base plate; the number of the movable connecting parts corresponds to the number of the installation cavities, and the anti-detachment parts of the multiple movable connecting parts are respectively arranged in the multiple installation cavities.

[0022] There are multiple installation cavities. The multiple installation cavities are divided into two groups and symmetrically arranged below the first basic bottom plate, and the anti-detachment parts of the multiple movable connecting parts are correspondingly arranged in the multiple installation cavities, so that the reliability of the connection of the movable connecting parts can be further improved, and the adjustment efficiency of the movable connecting parts when adjusting the distance between the first basic bottom plate and the second basic bottom plate can be effectively improved. The clamping degree between the first basic bottom plate and the second basic bottom plate can be greatly improved, and then the range value of the compressive stress borne by the vibration-damping pad layer can be increased, which is convenient for further analysis of the vibration reduction efficiency of the vibration-damping pad layer.

[0023] According to another embodiment of the present invention, the cross-sections of the first basic floor plate and the second basic floor plate along the horizontal direction are rectangular or square; the length of the first basic floor plate is smaller than the length of the second basic floor plate, and the width of the first basic floor plate is smaller than the width of the second basic floor plate; the first basic floor plate is surrounded by a first side support, a second side support, a third side support and a fourth side support, one side of the first side support, the second side support, the third side support and the fourth side support are connected to the first basic floor plate, and the other side extends upward along the height direction; the second basic floor plate is surrounded by a fifth side support, a sixth side support, a seventh side support and an eighth side support, one side of the fifth side support, the sixth side support, the seventh side support and the eighth side support are connected to the second basic floor plate, and the other side extends upward along the height direction.

[0024] The cross-sections of the first foundation slab and the second foundation slab along the horizontal direction are square or rectangular, and the length and width of the first foundation slab are smaller than those of the second foundation slab. A first side support, a second side support, a third side support and a fourth side support are arranged on the peripheral side of the first foundation slab, and a fifth side support, a sixth side support, a seventh side support and an eighth side support are arranged on the peripheral side of the second foundation slab. In this way, in addition to an elastic cushion layer between the first foundation slab and the second foundation slab, a side wall cushion layer may also be arranged on the peripheral side of the first foundation slab to simulate the influence of a basement box foundation and side limits; and then it is placed in a plastic saturated soil box to simulate the influence of soil and water.

[0025] According to one embodiment of the present invention, the building model also includes: a building body, including multiple layers of building floors and building columns, the multiple layers of the building floors are arranged at intervals, the building columns are arranged between two connected building floors and extend along the height direction, wherein the building foundation is arranged at the bottom of the building body, and the building columns are bolted to the first foundation bottom plate.

[0026] The building model also includes a building body arranged above the building foundation. The building body includes building floors arranged at multiple layers and building columns arranged between adjacent building floors and along the vertical direction, which play a supporting and fixing role. The bottom ends of the building columns are bolted to the first foundation bottom plate, which helps to improve the reliability of the connection of the first foundation bottom plate and facilitates installation and disassembly, which helps to improve the installation efficiency of the test model.

[0027] The height-adjustable pull-out-resistant double-layer foundation building structure test model provided by the present invention is achieved by arranging a support cavity at the bottom of the first foundation bottom plate, and suspending the anti-detachment part of the movable connection member in the support cavity, with the other end connected to the second foundation bottom plate, and arranging a vibration-damping pad layer in the support cavity and between the support structure and the second foundation bottom plate. The movable connection member can perform a lifting and lowering movement with a limited displacement relative to the support cavity, and can prevent from escaping from the support cavity. At the same time, the spacing between the first foundation bottom plate and the second foundation bottom plate can be adjusted to achieve different nominal compressive stresses of the vibration-damping pad layer under different clamping degrees, so as to simulate the actual compressive stress under the actual counterweight, and then the vibration reduction efficiency of the vibration-damping pad layer under different compressive stresses can be simulated and tested. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic structural diagram of a height-adjustable anti-pulling double-layer foundation building structure test model provided by an embodiment of the present invention;

[0029] Figure 2 A partial schematic structural diagram of a height-adjustable anti-pulling double-layer foundation building structure test model provided by an embodiment of the present invention;

[0030] Figure 3 A partial schematic structural diagram of a height-adjustable anti-pulling double-layer foundation building structure test model provided by another embodiment of the present invention;

[0031] Figure 4 A partial schematic structural diagram of a height-adjustable anti-pulling double-layer foundation building structure test model provided by an embodiment of the present invention;

[0032] Figure 5 A partial schematic structural diagram of a height-adjustable pull-out-resistant double-layer foundation building structure test model provided by one embodiment of the present invention.

[0033] Description of Figure Numbers:

[0034] 1. Height-adjustable pull-out-resistant double-layer foundation building structure test model; 10. Building foundation; 101. First foundation bottom plate; 1011. First side support; 1012. Second side support; 102. Second foundation bottom plate; 1021. Fifth side support; 1022. Sixth side support; 103. First support plate; 104. Second support plate; 105. Third support plate; 106. Fourth support plate; 107. Installation cavity; 108. Opening; 109. Limiting groove; 20. Building body; 201. Building floor; 202. Building column; 30. Movable connecting piece; 301. Anti-slip part; 302. Connecting column; 40. Support bottom plate; 401. First side plate; 402. Second side plate; 50. Support cavity. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the invention clearer, the technical solution in the invention will be clearly described below in conjunction with the drawings in the invention. Obviously, the described embodiments are part of the embodiments of the invention, not all of the embodiments. Based on the embodiments in the invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the invention.

[0036] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limitations on the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0037] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" 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. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0038] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0039] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0040] like Figure 1 and Figure 2 As shown, the present invention provides a height-adjustable pull-out-resistant double-layer foundation building structure test model 1, comprising: a building model, comprising a building foundation 10, the building foundation 10 comprising a first foundation bottom plate 101 and a second foundation bottom plate 102 arranged below the first foundation bottom plate 101 and spaced from the first foundation bottom plate 101; a supporting structure, the supporting structure is arranged below the first foundation bottom plate, and a supporting cavity 50 is defined between the supporting structure and the first foundation bottom plate 101; a movable connecting member 30, comprising an anti-slip portion 301 and a connecting portion, the anti-slip portion 301 is suspended in the supporting cavity 50, one end of the connecting portion is connected to the anti-slip portion 301, and the other end is connected to the second foundation bottom plate; a vibration-damping pad, the vibration-damping pad is arranged in the supporting cavity 50 and between the supporting structure and the second foundation bottom plate 102; wherein the movable connecting member 30 is suitable for lifting and lowering relative to the supporting cavity 50 and adjusting the spacing between the first foundation bottom plate 101 and the second foundation bottom plate 102, so as to simulate the vibration-damping efficiency of the vibration-damping pad under different pressures.

[0041] The height-adjustable anti-pulling double-layer foundation building structure test model 1 provided by the present invention comprises: a building model, a supporting structure, an active connection member 30 and a vibration-damping cushion layer. The building model comprises a building base, the building base comprises a first basic bottom plate 101 and a second basic bottom plate 102 arranged below the first basic bottom plate 101, and the second basic bottom plate 102 is arranged at an interval from the first basic bottom plate 101, for arranging the vibration-damping cushion layer. The support structure is arranged below the first base plate 101, and a support cavity 50 is defined between the support structure and the first base plate 101. The anti-detachment portion 301 of the movable connecting member 30 is arranged in the support cavity 50, and the other end is connected to the second base plate 102, so as to play an anti-pullout role, and prevent the movable connecting member 30 and the second base plate 102 connected thereto from being separated from the first base plate 101. The vibration-damping pad is arranged in the support cavity 50 and between the support structure and the second base plate 102. By controlling the movable connecting member 30 to perform a limited displacement lifting movement relative to the support cavity 50, the spacing between the first base plate 101 and the second base plate 102 can be adjusted, so that the clamping degree of the vibration-damping pad can be adjusted, and then the nominal compressive stress of the vibration-damping pad can be converted into the nominal compressive stress of the vibration-damping pad through different clamping degrees to simulate the actual compressive stress of the vibration-damping pad under the actual counterweight. The test model is not only simple in structure, but also can effectively reduce the system counterweight and the load of the experimental system, and is convenient for analyzing and studying the vibration-damping efficiency of the vibration-damping pad under different pressures.

[0042] According to one embodiment of the present invention, the support structure includes: a support bottom plate 40, a first side plate 401, a second side plate 402, a third side plate and a fourth side plate arranged around the bottom plate, wherein a gap is provided between the support bottom plate 40 and the first basic bottom plate 101, and the first side plate 401, the second side plate 402, the third side plate and the fourth side plate are respectively connected to the bottom of the first basic bottom plate 101 to define a support cavity 50, such as Figure 2 shown.

[0043] The supporting structure includes a supporting base plate 40 and a first side plate 401, a second side plate 402, a third side plate and a fourth side plate arranged around the base plate, and the first side plate 401 to the fourth side plate are all connected to the bottom of the first basic base plate 101, thereby defining a supporting cavity 50, and the supporting cavity 50 is filled with a vibration-damping pad layer, and one end of the movable connecting member 30 is arranged in the supporting cavity 50 to prevent the vibration-damping pad layer or the movable connecting member 30 from detaching from the supporting structure.

[0044] According to one embodiment of the present invention, the support structure further includes a first support plate 103, a second support plate 104, a third support plate 105 and a fourth support plate 106 arranged in the support cavity 50, the first support plate 103, the second support plate 104, the third support plate 105 and the fourth support plate 106 are arranged on the support base plate 40 and connected in sequence to define an installation cavity 107 between the first base base plate 101, and the anti-detachment portion 301 of the movable connecting member 30 is arranged in the installation cavity 107, such as Figure 4 and Figure 5 shown.

[0045] The support cavity 50 is provided with a first support plate 103, a second support plate 104, a third support plate 105 and a fourth support plate 106 which are surrounded on the support base plate 40 and connected in sequence, and an installation cavity 107 is defined between the first support plate 103, the second support plate 104, the third support plate 105 and the fourth support plate 106 and the first basic base plate 101. By suspending the anti-detachment portion 301 of the movable connecting member 30 in the installation cavity 107 and filling the installation cavity 107 with vibration isolation material, the reliability and stability of the installation of the movable connecting member 30 are further improved.

[0046] According to one embodiment of the present invention, at least one of the first support plate 103, the second support plate 104, the third support plate 105 and the fourth support plate 106 is detachably connected to the support base plate 40. Figure 4 shown.

[0047] By making at least one of the first support plate 103, the second support plate 104, the third support plate 105 and the fourth support plate 106 detachably connected to the support base plate 40, at least one support plate is detached from the support base plate 40, and after one end of the movable connecting member 30 is arranged in the support cavity 50, the support plate is connected to the support base plate 40 to facilitate the installation of the movable connecting member 30.

[0048] According to one embodiment of the present invention, the support base plate 40 is provided with a limiting groove 109, and the limiting groove 109 is adapted to the thickness of at least one of the first support plate 103, the second support plate 104, the third support plate 105 and the fourth support plate 106, so that at least one of the first support plate 103, the second support plate 104, the third support plate 105 and the fourth support plate 106 is suitable for a tight fit connection with the limiting groove 109.

[0049] By setting a limiting groove 109 on the supporting base plate 40, and the limiting groove 109 is adapted to the thickness of at least one of the first supporting plate 103, the second supporting plate 104, the third supporting plate 105 and the fourth supporting plate 106, at least one of the first supporting plate 103 to the fourth supporting plate 106 is tightly connected to the limiting groove 109, which helps to improve the reliability and stability of the connection and facilitates installation and disassembly.

[0050] According to one embodiment of the present invention, the support base plate 40 is provided with an opening 108, and the opening 108 is at least partially located in the installation cavity 107, and the anti-slip portion 301 is suitable for being disposed in the installation cavity 107 through the opening 108. Figure 4 and Figure 5 shown.

[0051] An opening portion 108 is provided on the support base plate 40, and the opening portion 108 is arranged corresponding to a support plate that can be tightly connected with the limiting groove 109. When installing the movable connecting member 30, first remove the support plate corresponding to the opening portion 108, and then set the anti-detachment portion 301 of the movable connecting member 30 in the installation cavity 107 through the opening portion 108, and finally, the support plate is tightly connected with the limiting groove 109 to complete the installation of the movable connecting member 30, thereby improving the installation efficiency of the movable connecting member 30.

[0052] In some embodiments, the anti-detachment portion 301 includes an anti-detachment cap, and the connecting portion includes a connecting column, wherein the anti-detachment portion 301 is arranged in the installation cavity 107, the outer diameter of the connecting column is adapted to the size of the opening, the outer diameter of the anti-detachment portion 301 is larger than the outer diameter of the connecting column 302, the connecting column 302 is provided with an external thread, the second basic base plate 102 is provided with an internal thread, and the connecting column 302 is threadedly connected to the second basic base plate 102, such as Figure 4 shown.

[0053] The anti-slip portion 301 includes an anti-slip cap (such as a bolt cap or a flange protruding from the outer diameter of the connecting portion), and the connecting portion includes a connecting column 302, the outer diameter of the connecting column 302 is adapted to the size of the opening portion (that is, the opening portion 108 can allow the connecting column 302 to pass through and be installed), and by setting the outer diameter of the anti-slip cap to be larger than the outer diameter of the connecting column 302, when the anti-slip cap is arranged in the installation cavity 107, the anti-slip cap acts as a stopper, effectively preventing the movable connecting member 30 from escaping from the support cavity 50 from the opening portion 108. By threading the connecting column 302 with the second base bottom plate 102, the connecting column 302 can adjust the spacing between the second base bottom plate 102 and the first base bottom plate 101 by rotating forward or reversely along the thread direction, thereby realizing the simulation adjustment of the compressive stress of the vibration-damping pad layer arranged between the first base bottom plate 101 and the second base bottom plate 102, and then facilitating the research and analysis of the vibration reduction efficiency of the vibration-damping pad layer.

[0054] Specifically, the change d in the spacing between the second base plate and the first base plate can be adjusted by rotating the connecting column forward or backward (when the elastic cushion layer and the second base plate and the first base plate are just in contact, the spacing between the first base plate and the second base plate is d1, and the spacing between the second base plate and the first base plate after the connecting column thread adjustment is d2, and the spacing change is d=d1d2), which can be obtained by a vernier caliper. And using the known elastic modulus E of the elastic cushion layer between the second base plate and the first base plate, the compressive stress of the elastic cushion layer is obtained by Hooke's law. The compressive stress calculation formula is as follows:

[0055] σ=E×(d / d1)

[0056] In some embodiments, the number of the installation cavities 107 is multiple, and the multiple installation cavities 107 are symmetrically arranged in two groups below the first base plate 101; the number of movable connecting members 30 corresponds to the number of the installation cavities 107, and the anti-detachment parts 301 of the multiple movable connecting members 30 are respectively arranged in the multiple installation cavities 107. Figure 1 shown.

[0057] There are multiple installation cavities 107. The multiple installation cavities 107 are divided into two groups and symmetrically arranged below the first basic base plate 101, and the anti-detachment parts 301 of the multiple movable connecting parts 30 are correspondingly arranged in the multiple installation cavities 107. This can further improve the connection reliability of the movable connecting parts 30, effectively improve the adjustment efficiency of the movable connecting parts 30 when adjusting the distance between the first basic base plate 101 and the second basic base plate 102, and greatly improve the clamping degree between the first basic base plate 101 and the second basic base plate 102, thereby increasing the range value of the compressive stress borne by the vibration-damping pad layer, which is convenient for further analysis of the vibration reduction efficiency of the vibration-damping pad layer.

[0058] According to another embodiment of the present invention, the cross-sections of the first basic floor 101 and the second basic floor 102 along the horizontal direction are rectangular or square; the length of the first basic floor 101 is smaller than the length of the second basic floor 102, and the width of the first basic floor 101 is smaller than the width of the second basic floor 102; the first basic floor 101 is surrounded by a first side support 1011, a second side support 1012, a third side support and a fourth side support, one side of the first side support 1011, the second side support 1012, the third side support and the fourth side support are connected to the first basic floor 101, and the other side extends upward along the height direction; the second basic floor 102 is surrounded by a fifth side support 1021, a sixth side support 1022, a seventh side support and an eighth side support, one side of the fifth side support 1021, the sixth side support 1022, the seventh side support and the eighth side support are connected to the second basic floor 102, and the other side extends upward along the height direction, such as Figure 3 shown.

[0059] The cross-sections of the first foundation slab 101 and the second foundation slab 102 along the horizontal direction are square or rectangular, and the length and width of the first foundation slab 101 are smaller than those of the second foundation slab 102. A first side support 1011, a second side support 1012, a third side support and a fourth side support are arranged on the peripheral side of the first foundation slab 101, and a fifth side support 1021, a sixth side support 1022, a seventh side support and an eighth side support are arranged on the peripheral side of the second foundation slab 102. In this way, in addition to an elastic cushion layer between the first foundation slab 101 and the second foundation slab 102, a side wall cushion layer may also be arranged on the peripheral side of the first foundation slab 101 to simulate the influence of a basement box foundation and side limits; and then it is placed in a plastic saturated soil box to simulate the influence of soil and water.

[0060] According to one embodiment of the present invention, the building model also includes: a building body 20, including multi-story building floors 201 and building columns 202, the multi-story building floors 201 are arranged at intervals, the building columns 202 are arranged between two connected building floors 201, and are extended along the height direction, wherein the building foundation 10 is arranged at the bottom of the building body 20, and the building columns 202 are bolted to the first foundation bottom plate 101.

[0061] The building model also includes a building body 20 arranged above the building foundation 10. The building body 20 includes building floors 201 arranged at multiple layers and building columns 202 arranged between adjacent building floors 201 and arranged in the vertical direction, which play a supporting and fixing role. The bottom end of the building column 202 is bolted to the first foundation bottom plate 101, which helps to improve the reliability of the connection of the first foundation bottom plate 101, and is easy to install and disassemble, which helps to improve the installation efficiency of the test model.

[0062] The height-adjustable pull-out-resistant double-layer foundation building structure test model provided by the present invention is achieved by arranging a support cavity at the bottom of the first foundation bottom plate, suspending one end of a movable connecting member in the support cavity, and connecting the other end to the second foundation bottom plate, and arranging a vibration-damping pad layer in the support cavity and between the supporting structure and the second foundation bottom plate. The movable connecting member can perform a lifting and lowering movement with limited displacement in the support cavity, and can adjust the spacing between the first foundation bottom plate and the second foundation bottom plate at the same time, so that the vibration-damping pad layer can obtain different nominal compressive stresses under different clamping degrees, so as to simulate the actual compressive stress under the actual counterweight, and then the vibration reduction efficiency of the vibration-damping pad layer under different compressive stresses can be simulated and tested.

[0063] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A height-adjustable pull-out double-layer foundation building structure test model, characterized in that: include: The building model includes a building foundation, wherein the building foundation includes a first foundation bottom plate and a second foundation bottom plate disposed below the first foundation bottom plate and spaced apart from the first foundation bottom plate; A support structure, wherein the support structure is disposed below the first basic bottom plate and defines a support cavity between the support structure and the first basic bottom plate; The movable connecting member comprises an anti-slipping part and a connecting part, so that the anti-slipping part is suspended in the supporting cavity, one end of the connecting part is connected to the anti-slipping part, and the other end is connected to the second basic bottom plate; A vibration-damping pad layer, the vibration-damping pad layer is arranged in the supporting cavity and between the supporting structure and the second basic bottom plate; The movable connection member is suitable for lifting and lowering relative to the support cavity and adjusting the distance between the first basic bottom plate and the second basic bottom plate to simulate the vibration reduction efficiency of the vibration reduction pad under different pressures.

2. The height-adjustable pull-out-resistant double-layer foundation building structure test model according to claim 1 is characterized in that: The supporting structure includes: a supporting base plate, a first side plate, a second side plate, a third side plate and a fourth side plate arranged around the base plate, wherein a gap is provided between the supporting base plate and the first basic base plate, and the first side plate, the second side plate, the third side plate and the fourth side plate are respectively connected to the bottom of the first basic base plate to define the supporting cavity.

3. The height-adjustable pull-out-resistant double-layer foundation building structure test model according to claim 2 is characterized in that: The support structure also includes a first support plate, a second support plate, a third support plate and a fourth support plate arranged in the support cavity. The first support plate, the second support plate, the third support plate and the fourth support plate are arranged around the support base plate and connected in sequence to define an installation cavity between the first basic base plate, and the anti-detachment portion is arranged in the installation cavity.

4. The height-adjustable pull-out-resistant double-layer foundation building structure test model according to claim 3 is characterized in that: At least one of the first support plate, the second support plate, the third support plate and the fourth support plate is detachably connected to the support base plate.

5. The height-adjustable pull-out-resistant double-layer foundation building structure test model according to claim 4 is characterized in that: The support bottom plate is provided with a limiting groove, and the limiting groove is adapted to the thickness of at least one of the first support plate, the second support plate, the third support plate and the fourth support plate, so that at least one of the first support plate, the second support plate, the third support plate and the fourth support plate is suitable for a tight fit connection with the limiting groove.

6. The height-adjustable pull-out-resistant double-layer foundation building structure test model according to any one of claims 3 to 5, characterized in that: The supporting bottom plate is provided with an opening portion, and the opening portion is at least partially located in the installation cavity. The anti-slip portion is suitable for being arranged in the installation cavity through the opening portion.

7. The height-adjustable pull-out-resistant double-layer foundation building structure test model according to claim 6 is characterized in that: The anti-detachment part includes an anti-detachment cap, and the connecting part includes a connecting column, wherein the outer diameter of the connecting column is adapted to the size of the opening, the outer diameter of the anti-detachment part is larger than the outer diameter of the connecting column, the connecting column is provided with an external thread, and the second basic base plate is provided with an internal thread, and the connecting column is threadedly connected to the second basic base plate.

8. The height-adjustable pull-out-resistant double-layer foundation building structure test model according to any one of claims 3 to 5, characterized in that: There are multiple installation cavities, and the multiple installation cavities are divided into two groups and symmetrically arranged below the first basic bottom plate; The number of the movable connecting members corresponds to the number of the installation cavities, and the anti-detachment parts of the plurality of movable connecting members are respectively and correspondingly arranged in the plurality of installation cavities.

9. The height-adjustable pull-out-resistant double-layer foundation building structure test model according to any one of claims 1 to 5, characterized in that: The cross-sections of the first basic bottom plate and the second basic bottom plate along the horizontal direction are rectangular or square; The length of the first base floor is smaller than the length of the second base floor, and the width of the first base floor is smaller than the width of the second base floor; A first side support, a second side support, a third side support and a fourth side support are arranged around the periphery of the first basic bottom plate, one side of the first side support, the second side support, the third side support and the fourth side support are connected to the first basic bottom plate, and the other side thereof extend upward in the height direction; The second basic base plate is surrounded by a fifth side support, a sixth side support, a seventh side support and an eighth side support, one side of the fifth side support, the sixth side support, the seventh side support and the eighth side support are connected to the second basic base plate, and the other side extends upward along the height direction.

10. The height-adjustable pull-out-resistant double-layer foundation building structure test model according to any one of claims 1 to 5, characterized in that: The building model also includes: The building body includes multiple layers of building floors and building columns. The multiple layers of building floors are arranged at intervals. The building columns are arranged between two connected building floors and extend along the height direction. The building foundation is arranged at the bottom of the building body, and the building columns are bolted to the first foundation bottom plate.

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