Liftable model support for bridge foundation scouring experiment

Abstract

The utility model relates to the technical field of bridge structure experiment equipment, and discloses a liftable model support for a bridge foundation scouring experiment, which comprises a base (1) used for supporting and adjusting the supporting height; the tray (2) is movably arranged above the base and used for fixing the bottom of the bridge foundation model and adjusting the pitch angle; and the fixing device (3) is arranged above the tray and is used for adjusting a pitch angle and fixing the top of the bridge foundation model. Compared with an existing fixing device for the water tank scouring experiment, the fixing device for the water tank scouring experiment can save labor, flexibly adjust the burial depth and the scoured angle of the model, and is wide in applicability and good in stability.

Description

Technical Field

[0001] This utility model relates to the field of bridge structure experimental equipment, and in particular to a liftable model support for bridge foundation scour experiments. Background Technology

[0002] Bridge scour model experiments, as a traditional method in basic scour research, not only contribute to a clearer understanding of scour mechanisms and the refinement of scour formulas, but also remain the preferred method for solving key and challenging problems related to bridge foundation scour, thus guiding practical engineering applications. The process of fixing the bridge foundation model in a flume typically involves several key steps to ensure the model's stability and accuracy in simulation experiments. First, appropriate model materials and dimensions need to be selected to ensure representativeness and consistency with the performance of actual bridge foundations. Then, the model foundation is placed at the bottom of the flume and secured using support devices. These support devices can include clamps, bolts, or other mechanical devices to ensure the model does not move or tilt during the experiment. Furthermore, to simulate actual soil responses, the bottom of the flume may need to be filled with a specific type of soil or similar material to provide appropriate support and pressure. These steps help to accurately simulate the performance of actual bridge foundations under different hydrological and geological conditions, thereby providing reliable data support for bridge design and engineering optimization.

[0003] Traditional bridge model support structures often require custom-made fixtures, and to ensure stability, these structures are typically quite heavy, making them difficult to move. This inconvenience is particularly noticeable when changing experimental conditions or models. Furthermore, scour experiments often involve filling the structures with large amounts of sand and gravel, which further restricts the movement and adjustment of the support structures themselves. Summary of the Invention

[0004] In order to overcome or alleviate one or more of the above technical problems, the purpose of this utility model is to provide a liftable model support for bridge foundation scour experiments, so as to meet the needs of fixing the position and maintaining stability of various types of bridge foundation models in water tank scour experiments, flexibly adjust the model position to adapt to the burial depth, and arrange the wiring of measuring devices such as pressure gauges.

[0005] This utility model provides the following technical solution:

[0006] A liftable model support for bridge foundation scour experiments, comprising:

[0007] The base (1) is used for support and adjustment of the support height;

[0008] The tray (2) is movably positioned above the base and is used to fix the bottom of the bridge foundation model and adjust the pitch angle;

[0009] A fixing device (3) is arranged above the tray and is used for adjusting the pitch angle and fixing the top of the bridge foundation model.

[0010] According to some embodiments, the base (1) comprises a bottom plate (101) and a plurality of sleeves (102) symmetrically arranged on the left and right sides of the bottom plate (101).

[0011] According to some embodiments, the tray (3) comprises four-way sleeves (201) movably arranged above and below the sleeves (102) in correspondence, a tray fixing pipe (202) arranged in one of the four-way sleeves (201), a tray rotating pipe (203) arranged in the other four-way sleeve (201), and front and rear tray supports (204) movably connected to the tray fixing pipe (202) and the tray rotating pipe (203), and a tray plate (205) clamped between the tray supports (204).

[0012] According to some embodiments, one end of the tray support (204) is inserted into the tray fixing pipe (202), and the other end is inserted into the tray rotating pipe (203) and extends a distance.

[0013] According to some embodiments, the fixing device (3) comprises three-way sleeves (301) arranged in correspondence with the plurality of four-way sleeves (201), a fixing pipe (302) arranged above the tray fixing pipe (202) and located on one side of the three-way sleeve (301), a rotating pipe (303) arranged above the tray rotating pipe (203) and located on the other side of the three-way sleeve (301), and front and rear fixing supports (304) movably connected to the fixing pipe (302) and the rotating pipe (303).

[0014] According to some embodiments, the fixing supports (304) in front and rear directions are provided with an adjusting support (401) clamping and fixing the top of the bridge foundation model.

[0015] According to some embodiments, the sleeves (102), the four-way sleeves (201), and the three-way sleeves (301) are all provided with through holes in the vertical direction, and the height is adjusted by inserting pins.

[0016] According to some embodiments, one end of the fixing support (304) is inserted into the fixing pipe (302), and the other end is inserted into the rotating pipe (303) and extends a distance.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] The liftable model support for bridge foundation scouring experiment provided by the utility model satisfies the demand of fixing position and maintaining stability of various forms of bridge foundation models in the water tank scouring experiment, can save labor and flexibly adjust the model position to adapt to the buried depth, and can arrange the pressure gauge and other measuring devices to lay out lines. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 The structure schematic view of the liftable model support for bridge foundation scouring experiment provided by the utility model embodiment.

[0020] Figure 2 The structure schematic view of the base provided by the utility model embodiment.

[0021] Figure 3 The structure schematic view of the tray provided by the utility model embodiment.

[0022] Figure 4 The structure schematic view of the fixing device provided by the utility model embodiment.

[0023] Figure 5 The use schematic view when the bridge foundation model is the pile foundation model provided by the utility model embodiment.

[0024] Figure 6 The use schematic view when the bridge foundation model is the enlarged foundation model provided by the utility model embodiment.

[0025] In the drawings:

[0026] Base 1; bottom plate 101; sleeve 102; tray 2; four-way sleeve 201; tray fixing pipe 202; tray rotating pipe 203; tray support 204; tray plate 205; fixing device 3; three-way sleeve 301; fixing pipe 302; rotating pipe 303; fixing support 304; adjusting support 401; fixing clamp 402. DETAILED DESCRIPTION

[0027] The utility model is described in detail below in combination with the embodiments and the drawings, but it is understood that the embodiments and the drawings are only used for exemplarily describing the utility model, and cannot constitute any limitation on the protection scope of the utility model. All reasonable changes and combinations included in the utility model spirit range fall into the protection scope of the utility model.

[0028] In the description of the utility model, it is necessary to explain that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "rear" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model; the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance, in addition, unless otherwise explicitly specified and limited, the terms "set", "installed", "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0029] The utility model will be further described below in combination with the drawings.

[0030] Embodiment 1

[0031] As Figure 1 , the utility model provides a liftable model support for bridge foundation scouring experiment, including base 1 for stabilizing support and adjusting support height, tray 2 for fixing bridge foundation model bottom and adjusting pitch angle, fixing device 3 can be adjusted according to the shape of bridge foundation model.

[0032] As Figure 2 , base 1 includes bottom plate 101, four sleeves 102 are welded on the bottom plate 101. The sleeve 102 is hollow, which can be used for arranging devices such as pressure tester, a plurality of through holes for adjusting height by inserting pin are arranged on the sleeve 102 in the figure; the bottom plate 101 is made of steel, which has large mass, so as to ensure the stability of the whole support after installation. The base 1 can be placed in any direction to adapt to the experimental requirements of different water flow directions and scouring angles.

[0033] As Figure 3, the tray 2 includes four four-way sleeves 201, a tray fixing pipe 202 on one side, a tray rotating pipe 203 on the other side, a tray support 204 and a tray plate 205; the four-way sleeves 201 are provided with a plurality of through holes for adjusting the height by inserting a pin; the four-way sleeves 201 below can be inserted into the sleeves 102 and fixed by the fixing assembly; the tray fixing pipe 202 and the tray rotating pipe 203 can be inserted into the four-way sleeves 201 in the horizontal direction; the tray support 204 is connected to the tray fixing pipe 202 and the tray rotating pipe 203 at both ends and extends outward through the tray rotating pipe 203, so that labor is saved when manually adjusting; the tray plate 205 is embedded in the tray support 204. When the tray plate 205 needs to be inclined, the four-way sleeves 201 outside the tray rotating pipe 203 are moved up and down with the tray fixing pipe 202 as the fixed end and are fixed at the specified position, so that the tray plate 205 is at a specific inclination angle.

[0034] When using the tray 2, first calculate the required burial depth: 1. If the tray is not used, the burial depth = water flow bottom height - water tank bottom height - bottom plate thickness; 2. If the tray is used and the pitch angle does not need to be adjusted, the burial depth = water flow bottom height - water tank bottom height - bottom plate thickness - tray distance from bottom plate height;

[0035] After calculating the burial depth, if the tray is to be used, then: 1. Adjust the position of the four-way sleeves 201 to the required height and fix it with the pin; 2. Insert the tray fixing pipe 202 and the tray rotating pipe 203 horizontally into the four-way sleeves 201; 3. Embed the tray plate 205 into the tray support 204; 4. Insert the whole formed by the tray support 204 and the tray plate 205 into the tray rotating pipe 203, and then into the corresponding hole of the tray fixing pipe 202.

[0036] If Figure 4 , the fixing device 3 includes four three-way sleeves 301, a fixing pipe 302, a rotating pipe 303 and a fixing support 304; the three-way sleeves 301 are inserted downward into the four-way sleeves 201 and fixed by the fixing assembly; the fixing pipe 302 and the rotating pipe 303 can be horizontally inserted into the two three-way sleeves 301 respectively; the fixing support 304 connects the fixing pipe 302 and the rotating pipe 303, and the fixing support 304 extends outward after passing out of the rotating pipe 303, so as to facilitate labor-saving adjustment. The adjusting supports 104 for fixing the pile foundation are arranged between the fixing supports 304, and the adjusting supports 401 are fixed on the fixing supports 304 by the fixing clamps 402 at both ends.

[0037] The fixing device 3 ensures that the bridge foundation model will not move under the action of penetrating soil sand and water flow.

[0038] If Figure 5When the bridge foundation model is a pile foundation model, the height or the pitch angle needs to be adjusted, and a fixed plate specially adapted to the foundation model is made, then the installation steps before the experiment are as follows:

[0039] 1. First, fix the tray 2 according to the required height and pitch angle, the way of fixing the tray 2 has been mentioned above;

[0040] 2. Insert the bridge foundation model into the fixed plate adapted to the pile foundation, and then place the bridge foundation model on the tray 205;

[0041] 3. Insert the three-way sleeve 301 into the four-way sleeve 201, and insert all the eight pins into the sleeve holes for fixation;

[0042] 4. Insert the fixed tube 302 and the rotating tube 303 into the three-way sleeve 301;

[0043] 5. Insert the fixed support 304 into the rotating tube 303, the fixed plate, and the fixed tube 302 in sequence;

[0044] 6. Use the fixing clamp 402 to fix the position of the fixed plate.

[0045] When the bridge foundation model is a pile foundation model, the height or the pitch angle does not need to be adjusted, and a fixed plate specially adapted to the foundation model is not made, then the installation steps before the experiment are as follows:

[0046] 1. Insert the three-way sleeve 301 into the sleeve 102, and insert all the eight pins into the sleeve holes for fixation;

[0047] 2. Insert the fixed tube 302 and the rotating tube 303 into the three-way sleeve 301;

[0048] 3. Insert the fixed support 304 into the rotating tube 303, the fixed plate, and the fixed tube 302 in sequence;

[0049] 4. Place the bridge foundation model directly on the bottom plate 101;

[0050] 5. Place the adjusting support 401 on the fixed support 304, and keep it close to any side edge of the pile foundation model, and use the fixing clamp 402 to fix the adjusting support 401 on the fixed support 304.

[0051] As Figure 6 When the bridge foundation model is any foundation model (for example, an enlarged foundation), the height or the pitch angle needs to be adjusted using the tray, then the installation steps before the experiment are as follows:

[0052] 1. First, fix the tray 2 according to the required height and pitch angle, the way of fixing the tray 2 has been mentioned above;

[0053] 2. Insert the tee sleeve 301 into the four-way sleeve 201, and insert the four pins into the sleeve holes to fix them in place;

[0054] 3. Insert the fixed tube 302 and the rotating tube 303 into the tee sleeve 301;

[0055] 4. Insert the fixed bracket 304 into the rotating tube 303, the fixed plate, and the fixed tube 302 in sequence;

[0056] 5. Place the bridge foundation model directly onto tray 201;

[0057] 6. Place the adjusting bracket 401 above and below the fixed bracket 304, keeping it close to any side of the pile foundation model, and use U-shaped clamps to fix the adjusting bracket 401 to the fixed bracket 304.

[0058] The above embodiments are merely preferred embodiments of this utility model, and the protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that improvements and modifications made by those skilled in the art without departing from the principle of this utility model should also be considered within its protection scope.

Claims

1. A liftable model support for bridge foundation scour experiment, characterized in that: The utility model relates to a bridge foundation model fixing device, including: Base (1) for supporting and adjusting support height; Tray (2) is movably arranged above the base, used for fixing the bottom of bridge foundation model and adjusting the pitch angle; Fixing device (3) is arranged above the tray, used for adjusting the pitch angle and fixing the top of bridge foundation model.

2. The liftable model support for bridge foundation scour experiment according to claim 1, characterized in that: The base (1) includes a bottom plate (101) and a plurality of sleeves (102) symmetrically arranged on the left and right sides of the bottom plate (101).

3. The liftable model support for bridge foundation scour experiment according to claim 2, characterized in that: The tray (2) includes a four-way sleeve (201) movably arranged above the sleeve (102), a tray fixing pipe (202) arranged in one side of the four-way sleeve (201), a tray rotating pipe (203) arranged in the other side of the four-way sleeve (201), and front and rear tray supports (204) movably connected with the tray fixing pipe (202) and the tray rotating pipe (203), and a tray plate (205) clamped between the tray supports (204).

4. The liftable model support for bridge foundation scour experiment according to claim 3, characterized in that: One end of the tray support (204) is inserted into the tray fixing pipe (202), and the other end is inserted into the tray rotating pipe (203) and extends a distance.

5. The liftable model support for bridge foundation scour experiment according to any one of claims 3-4, characterized in that: The fixing device (3) includes a three-way sleeve (301) corresponding to a plurality of four-way sleeves (201), a fixing pipe (302) arranged above the tray fixing pipe (202) and on one side of the three-way sleeve (301), a rotating pipe (303) arranged above the tray rotating pipe (203) and on the other side of the three-way sleeve (301), and front and rear fixing supports (304) movably connected with the fixing pipe (302) and the rotating pipe (303).

6. The liftable model support for bridge foundation scour experiment according to claim 5, characterized in that: The fixing supports (304) in front and rear are provided with an adjusting support (401) clamping and fixing the top of the bridge foundation model.

7. The liftable model support for bridge foundation scour experiment according to claim 5, characterized in that: The sleeves (102), the four-way sleeves (201) and the three-way sleeves (301) are all provided with through holes in the vertical direction, and the height is adjusted by inserting pins.

8. The liftable model support for bridge foundation scour experiment according to claim 5, characterized in that: One end of the fixing support (304) is inserted into the fixing pipe (302), and the other end is inserted into the rotating pipe (303) and extends a distance.

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