CN219064827U - Test device for combined bridge body flow load under typhoon disaster and flood disaster - Google Patents
Test device for combined bridge body flow load under typhoon disaster and flood disaster Download PDFInfo
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- CN219064827U CN219064827U CN202223397765.2U CN202223397765U CN219064827U CN 219064827 U CN219064827 U CN 219064827U CN 202223397765 U CN202223397765 U CN 202223397765U CN 219064827 U CN219064827 U CN 219064827U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The utility model discloses a test device for combined bridge body flow load under typhoon disasters and flood disasters, which comprises: the combined bridge body device is used for simulating a bridge body structure and bearing the hydrodynamic load simulating mountain floods or mud-rock flows, and the span, the bridge pier spacing and the bridge pier form of the bridge body are adjusted by changing the combined arrangement mode of the bridge body; the river channel simulation device comprises a simulated river bank and a simulated river bed and is used for simulating a river channel and bearing a combined bridge body device; the water supply and water collection device comprises a water supply side and a water collection side, wherein the water supply side is used for simulating the mountain torrents or the debris flows flowing into the river simulation device from the upstream, and the water collection side is used for collecting the mountain torrents or the debris flows flowing into the downstream of the river simulation device. The utility model establishes a river channel system scaling model which comprises a bridge body structure and is influenced by flood, and can simulate parameters such as different mountain floods or debris flow intensities, different river channel forms, different bridge body structures and the like, and explore the hydrodynamic action of the mountain floods or the debris flow on the bridge body structure and the mechanical response of the bridge body.
Description
Technical Field
The utility model relates to the technical field of hydrologic models, in particular to a test device for combined bridge body flow load under typhoon disasters and flood disasters.
Background
With the change of weather and environmental factors, typhoons, storm and other meteorological disasters frequently occur, and typhoons and storm generally cause flood disasters, such as flood or torrential flood outbreak, and more serious challenges are presented to various geotechnical structures (such as bridge systems). Because of limited drainage capacity of the river, the phenomenon of rising or overflowing of the river liquid surface caused by the upstream storm or flood field can cause the situation of overlarge water depth and water flow rate. In some river channel sections with bridge structures, the bridge structures can also have certain influence on the flow field, and meanwhile, the bridge structures such as piers and the like can be subjected to much larger than usual hydrodynamic loads. The storm or flood at the upstream will be converted into impact to the bridge structure, which affects the stability of the bridge structure and threatens the life and property safety of people.
The method has the advantages that the problems of hydrodynamic load of the bridge structure such as mountain floods or debris flows are researched through site means such as field detection, and the defects of bad research conditions, long research period, incapability of controlling parameters and the like exist, so that a model test is an effective means for researching related problems. Therefore, the utility model provides a combined bridge body flow load test device under typhoon disasters and flood disasters, which can realize the flow dynamic load action conditions of mountain floods or debris flows and the like on the bridge body under different river channel forms and different bridge body span structure conditions and record related data.
Disclosure of Invention
The utility model provides a test device for combined bridge body flow load under typhoon disasters and flood disasters, which aims to overcome the defects of the technology.
The technical scheme adopted for overcoming the technical problems is as follows:
a test device for combined bridge body flow load under typhoon disasters and flood disasters at least comprises:
the combined bridge body device is used for simulating a bridge body structure and bearing the hydrodynamic load simulating mountain floods or mud-rock flows, and at least the span of the bridge body, the distance between bridge piers and the bridge pier form are adjusted by changing the combined arrangement mode of the bridge body;
the river channel simulation device at least comprises a simulated river bank and a simulated river bed, and is at least used for simulating a river channel and bearing a combined bridge body device;
the water supply and water collection device comprises a water supply side and a water collection side, wherein the water supply side is used for simulating the mountain torrents or the debris flows flowing into the river simulation device from the upstream, and the water collection side is used for collecting the mountain torrents or the debris flows flowing into the downstream of the river simulation device.
Further, the river channel simulation device further comprises a base, the simulated river bank and the simulated river bed are arranged on the base, and the simulated river bank is located on two sides of the simulated river bed.
Further, the river simulation device further comprises a grid groove, and the grid groove spans the bottom of the simulated river bed.
Further, the combined bridge body device at least comprises a bridge pier unit and a bridge deck unit, wherein the bridge pier unit comprises a bridge pier head and a first bridge deck, the lower end of the bridge pier head is installed in the lattice groove, and the bridge deck unit comprises a second bridge deck.
Further, the first bridge deck plate is connected with the second bridge deck plate through a first connecting piece, and the first bridge deck plate or the second bridge deck plate at two ends of the combined bridge body device is connected with the simulated river bank through a second connecting piece.
Further, one side of pier head towards the upper reaches is provided with a plurality of manometer, the side of first decking and second decking all is provided with the foil gage.
Further, the water supply side comprises a water supply source, a water supply tank and a water supply pipeline for connecting the water supply source and the water supply tank, a pipeline valve is arranged on the water supply pipeline, and the water supply tank is right opposite to the upstream of the simulated river bed.
Further, the water collecting side sequentially comprises a water collecting tank, a water collecting pipeline and a water storage tank along the water flow direction, and the water collecting tank is opposite to the downstream of the simulated river bed.
Further, the simulated river bank is formed by 3D printing.
Further, the base is made of stainless steel.
The beneficial effects of the utility model are as follows:
the utility model establishes a river channel system scaling model which comprises a bridge body structure and is influenced by flood, and can simulate different mountain floods or debris flow intensities, different river channel forms, different bridge body structures and other parameters to explore the hydrodynamic action of the mountain floods or the debris flow on the bridge body structure and the mechanical response of the bridge body. When repeated tests are needed, the relevant parameters can be adjusted only by changing the arrangement mode of each unit component (namely the bridge pier unit and the bridge deck unit) of the combined bridge body device or changing the structure of the simulated river bank formed by 3D printing, and the device has the advantages of simple structure and convenient operation.
Drawings
Fig. 1 is a schematic structural diagram of a test device for combined bridge body water load under typhoon disasters and flood disasters according to an embodiment of the utility model.
Fig. 2 is a schematic structural diagram of a combined bridge device according to an embodiment of the utility model.
In the figure, 1, a water supply source; 2. a water supply pipe; 3. a pipeline valve; 4. a water supply tank; 5. a water collection tank; 6. a water collecting pipeline, a 7 and a reservoir; 8. a base; 9. simulating a river bank; 10. simulating a river bed; 11. a grid groove; 12. a modular bridge unit; 13. a bridge deck unit; 14. pier units; 141. bridge pier heads; 142. a first bridge deck; 131. a second bridge deck; 15. a first connector; 16. a second connector; 17. a pressure gauge; 18. strain gage.
Detailed Description
The utility model will now be described in further detail with reference to the drawings and the specific examples, which are given by way of illustration only and are not intended to limit the scope of the utility model, in order to facilitate a better understanding of the utility model to those skilled in the art.
As shown in fig. 1 and 2, the test device for combined bridge body water load under typhoon disaster and flood disaster according to this embodiment at least includes a combined bridge body device 12, a river simulation device and a water supply and collection device.
In this embodiment, the river channel simulation device at least includes a base 8, a simulated river bank 9 and a simulated river bed 10, the simulated river bank 9 and the simulated river bed 10 are disposed on the base 8, the simulated river bank 9 is located at two sides of the simulated river bed 10, and the river channel simulation device is at least used for simulating a river channel and bearing a combined bridge device 12; the overall dimensions of the river simulation device, namely the length, width and height are respectively 2m, 1.5m and 0.4m, wherein the height comprises a base 8 with the height of 0.2m and a simulated river bank 9 with the height of 0.2m, and the dimensions are the preferred dimensions of the embodiment and are not limiting on the dimensions of the test device. The base 8 is made of stainless steel, the strength is relatively high, and the stability of the test device is guaranteed. The simulated river bank 9 is formed by 3D printing, parameters such as the form, the river channel width and the like of the simulated river bank 9 are designed through a 3D printing technology, and when the parameters such as the form, the river channel width and the like of the simulated river bank 9 need to be replaced, the parameters are adjusted or replaced through 3D printing.
Preferably, the river simulation device further comprises a grid groove 11, wherein the grid groove 11 spans across the bottom of the simulated river bed 10 and is used for providing an installation position for the combined bridge device 12.
In this embodiment, the water supply and collection device includes a water supply side and a water collection side. The water supply side comprises a water supply source 1, a water supply tank 4 and a water supply pipeline 2 for connecting the water supply source and the water supply tank, a pipeline valve 3 is arranged on the water supply pipeline 2, the water supply tank 4 is opposite to the upstream of the simulated river bed 10, and the water supply side controls the water quantity of the water supply source 1 entering the water supply tank 4 through the water supply pipeline 2 through the pipeline valve 3, namely, the water supply side is used for simulating mountain floods or debris flows flowing into the river simulation device from the upstream. The water collecting side sequentially comprises a water collecting tank 5, a water collecting pipeline 6 and a water reservoir 7 along the water flow direction, the water collecting tank 5 is opposite to the downstream of the simulated river bed 10, and the water collecting side is used for collecting mountain floods or debris flows flowing from the water reservoir 7 to the downstream of the river simulation device.
In this embodiment, the combined bridge body device 12 at least includes a bridge pier unit 14 and a bridge deck unit 13, the bridge pier unit 14 includes a bridge pier head 141 and a first bridge deck 142, the bridge deck unit 13 includes a second bridge deck 131, that is, the bridge pier unit 14 has one more bridge pier than the bridge deck unit 13, and the lower end of the bridge pier head 141 is mounted in the lattice groove 11, that is, the lattice groove 11 provides a mounting position for the bridge pier head 141. Further, the first bridge deck 142 is connected to the second bridge deck 131 through a first connecting member 15, preferably, the first connecting member 15 is a lap joint fastener, and the first bridge deck 142 is connected to the second bridge deck 131 through the first connecting member 15 to form an integral structure; the first bridge deck 142 or the second bridge deck 131 at two ends of the combined bridge body device 12 are connected with the simulated river bank 9 through the second connecting pieces 16, the two ends of the combined bridge body device 12 may be bridge pier units 14 or bridge deck units 13, preferably the second connecting pieces 16 are anchor bolts, and the two ends of the combined bridge body device 12 are mounted on the simulated river bank 9 through the anchor bolts. Further, a plurality of pressure gauges 17 are disposed on the upstream side of the bridge pier 141 for measuring pressure variation during the test; the sides of the first bridge deck 142 and the second bridge deck 131 are respectively provided with a strain gauge 18 for measuring stress-strain conditions of the local bridge body structure during the test. In this embodiment, the combined bridge device 12 is used for simulating a bridge structure and bearing a hydrodynamic load simulating a mountain torrent or a debris flow, and at least the span of the bridge, the distance between the bridge piers, and the bridge form are adjusted by changing the combined arrangement of the bridge (specifically, changing the arrangement of the bridge pier unit 14 and the bridge deck unit 13).
The working principle of the test device for the combined bridge body flow load under typhoon disasters and flood disasters is as follows:
according to the designed river channel structure, manufacturing a simulated river bank 9 by a 3D printing technology, and installing the simulated river bank 9 on a base 8; according to the design of the bridge body structure, the bridge deck units 13 and the bridge pier units 14 are connected with each other through the first connecting pieces 15, the bridge pier heads 141 of all bridge pier units 14 are arranged in the corresponding lattice grooves 11, and the first bridge deck 142 or the second bridge deck 131 at two ends of the combined bridge body device 12 are arranged on the simulated river bank 9 through the second connecting pieces 16; and setting a water supply side structure and a water collection side structure to finish all preparation works. Then controlling a pipeline valve 3 at the water supply side, and enabling the simulated mountain torrent or mud-rock flow to enter a simulated river bed 10 through a water supply tank 4 to form the input of a hydrodynamic load; the simulated torrential flood or debris flow flows through the combined bridge device 12 to form a complex flow field, and a certain impact load is applied to the bridge, and finally is discharged through the water collecting tank 5; the parameters such as the height and the flow velocity of the river surface of the river channel simulation device can be controlled by integrating the flow difference of the water supply tank 4 and the water collecting tank 5; during the test, the pressure gauge 17 and the strain gage 18 will continuously measure and record the mechanical response of the bridge structure. When repeated experiments are needed, the adjustment of relevant parameters can be realized by only changing the arrangement mode of each unit component (namely the bridge pier unit 14 and the bridge deck unit 13) of the combined bridge body device 12 or changing the structure of the simulated river bank 9 formed by 3D printing, and the device has the advantages of simple structure and convenient operation.
The foregoing has described only the basic principles and preferred embodiments of the present utility model, and many variations and modifications will be apparent to those skilled in the art in light of the above description, which variations and modifications are intended to be included within the scope of the present utility model.
Claims (10)
1. Test device of combination formula bridge body flow load under typhoon disaster and flood disaster, its characterized in that includes at least:
the combined bridge body device (12) is used for simulating a bridge body structure and bearing the hydrodynamic load simulating mountain floods or mud-rock flows, and at least the span of the bridge body, the distance between bridge piers and the bridge pier form are adjusted by changing the combined arrangement mode of the bridge body;
the river channel simulation device at least comprises a simulated river bank (9) and a simulated river bed (10), and is at least used for simulating a river channel and bearing a combined bridge body device (12);
the water supply and water collection device comprises a water supply side and a water collection side, wherein the water supply side is used for simulating the mountain torrents or the debris flows flowing into the river simulation device from the upstream, and the water collection side is used for collecting the mountain torrents or the debris flows flowing into the downstream of the river simulation device.
2. The test device for combined bridge body running water load under typhoon disasters and flood disasters according to claim 1, wherein the river channel simulation device further comprises a base (8), the simulated river bank (9) and the simulated river bed (10) are arranged on the base (8), and the simulated river bank (9) is located on two sides of the simulated river bed (10).
3. Test device for combined bridge body water load under typhoon disasters and floods according to claim 1, characterized in that the river simulation device further comprises a grid (11) crossing the bottom of the simulated river bed (10).
4. A test device for combined bridge body water load under typhoon disasters and flood disasters according to claim 3, wherein the combined bridge body device (12) at least comprises a pier unit (14) and a bridge deck unit (13), the pier unit (14) comprises a pier head (141) and a first bridge deck (142), the lower end of the pier head (141) is installed in a grid groove (11), and the bridge deck unit (13) comprises a second bridge deck (131).
5. The test device for combined bridge body running water load under typhoon disasters and flood disasters according to claim 4, wherein the first bridge deck (142) and the second bridge deck (131) are connected through a first connecting piece (15), and the first bridge deck (142) or the second bridge deck (131) at two ends of the combined bridge body device (12) are connected with a simulated river bank (9) through a second connecting piece (16).
6. The test device for combined bridge body running water load under typhoon disasters and flood disasters according to claim 4, wherein a plurality of pressure gauges (17) are arranged on one side, facing upstream, of the pier heads (141), and strain gauges (18) are arranged on the side surfaces of the first bridge deck (142) and the second bridge deck (131).
7. The test device for combined bridge body running water load under typhoon disasters and flood disasters according to claim 1, wherein the water supply side comprises a water supply source (1), a water supply tank (4) and a water supply pipeline (2) for connecting the water supply source and the water supply tank, a pipeline valve (3) is arranged on the water supply pipeline (2), and the water supply tank (4) is right opposite to the upstream of a simulated river bed (10).
8. The test device for combined bridge body running water load under typhoon disasters and flood disasters according to claim 1, wherein the water collecting side sequentially comprises a water collecting tank (5), a water collecting pipeline (6) and a water reservoir (7) along the water flow direction, and the water collecting tank (5) is opposite to the downstream of a simulated river bed (10).
9. Test device for combined bridge body water load under typhoon disasters and flood disasters according to claim 1, characterized in that the simulated river bank (9) is formed by 3D printing.
10. Test device for combined bridge body water load under typhoon disasters and flood disasters according to claim 2, characterized in that the base (8) is made of stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223397765.2U CN219064827U (en) | 2022-12-19 | 2022-12-19 | Test device for combined bridge body flow load under typhoon disaster and flood disaster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223397765.2U CN219064827U (en) | 2022-12-19 | 2022-12-19 | Test device for combined bridge body flow load under typhoon disaster and flood disaster |
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| Publication Number | Publication Date |
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| CN219064827U true CN219064827U (en) | 2023-05-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202223397765.2U Active CN219064827U (en) | 2022-12-19 | 2022-12-19 | Test device for combined bridge body flow load under typhoon disaster and flood disaster |
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| CN (1) | CN219064827U (en) |
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- 2022-12-19 CN CN202223397765.2U patent/CN219064827U/en active Active
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