CN117969008A - Wind tunnel test method and model for pushing construction of large-span roof crossing existing line - Google Patents
Wind tunnel test method and model for pushing construction of large-span roof crossing existing line Download PDFInfo
- Publication number
- CN117969008A CN117969008A CN202410371021.8A CN202410371021A CN117969008A CN 117969008 A CN117969008 A CN 117969008A CN 202410371021 A CN202410371021 A CN 202410371021A CN 117969008 A CN117969008 A CN 117969008A
- Authority
- CN
- China
- Prior art keywords
- model
- span roof
- wind tunnel
- pier column
- existing station
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000010276 construction Methods 0.000 title claims abstract description 44
- 238000010998 test method Methods 0.000 title claims abstract description 17
- 238000012360 testing method Methods 0.000 claims abstract description 61
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 38
- 239000010959 steel Substances 0.000 claims abstract description 38
- 238000000034 method Methods 0.000 claims description 24
- 239000000463 material Substances 0.000 claims description 6
- 238000009530 blood pressure measurement Methods 0.000 claims description 5
- 239000003822 epoxy resin Substances 0.000 claims description 2
- 239000003292 glue Substances 0.000 claims description 2
- 229920000647 polyepoxide Polymers 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 abstract description 7
- 238000004904 shortening Methods 0.000 abstract 1
- 230000008569 process Effects 0.000 description 11
- 230000009471 action Effects 0.000 description 6
- 230000008859 change Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229920006335 epoxy glue Polymers 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000005347 demagnetization Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000036544 posture Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Landscapes
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The application provides a wind tunnel test method and a model for pushing construction of a large-span roof crossing an existing line, and belongs to the technical field of aerodynamics. In the wind tunnel test method, a large-span roof model is placed on a pier column model, electromagnets are fixed on the upper surfaces of the existing station building model and the pier column model, steel plates are fixed on the lower surfaces of the large-span roof model and the guide beam model, or steel plates are fixed on the upper surfaces of the existing station building model and the pier column model, and electromagnets are fixed on the lower surfaces of the large-span roof model and the guide beam model; and in the electromagnet power-off state, the large-span roof model and the guide beam model are pushed to the existing station house model for different distances. The wind tunnel test method provided by the application can cope with the condition that the large roof structure has multiple times of structural system conversion in construction, thereby providing basis for the safe construction of the main structure, saving test cost and shortening test time without making multiple models.
Description
Technical Field
The application belongs to the technical field of aerodynamics, and particularly relates to a wind tunnel test method and a model for pushing construction of a long-span roof of an existing upward-span line.
Background
According to the wind tunnel test, a model of a structure is fixed in a ground artificial environment according to a relativity principle of movement, and air flow is manufactured artificially to flow through the model, so that the structure is simulated to bear wind load, and test data are obtained. Wind tunnel tests mainly study the distribution characteristics of wind pressure, wind force, wind speed and the like of complex buildings under the action of wind load.
More and more complex projects now rely on wind tunnel tests to obtain design parameters, but mainly make a fixed wind tunnel model for a built structure, and obtain wind load design parameters through the wind tunnel tests. However, for a large roof structure, multiple structural system conversions exist in the construction stage, the wind load characteristic of the large roof structure greatly changes along with different pushing postures of the structure, and the wind pressure characteristic in the pushing construction process is completely different from that in the use stage after the construction.
In order to ensure the safety, economy and rationality of the pushing construction stage of the building structure, the wind load characteristic of the main body structure in the pushing stage is necessarily determined according to the wind tunnel test result, and a basis is provided for the safe construction of the main body structure.
Therefore, how to implement the wind tunnel test under the condition that a large roof structure has multiple structural system conversions in construction is a problem to be solved, so that the basis is provided for the safe construction of the main structure by means of the result of the wind tunnel test.
Disclosure of Invention
The application firstly provides a wind tunnel test method and a model for pushing construction of a large-span roof which spans an existing line, which can cope with the condition that a large-scale roof structure has multiple times of structural system conversion in construction and provide a basis for the safe construction of a main structure.
The method for the wind tunnel test of the pushing construction of the large-span roof of the overspan existing line comprises the following steps:
Building an existing station building model on a turntable, and arranging a pier column model on one side of the existing station building model facing an operation line;
Placing a large-span roof model on the pier column model, and connecting a guide beam model at one end of the large-span roof model facing the existing station house model;
The upper surfaces of the existing station building model and the pier column model are fixedly provided with electromagnets, the lower surfaces of the large-span roof model and the guide beam model are fixedly provided with steel plates, or the upper surfaces of the existing station building model and the pier column model are fixedly provided with steel plates, and the lower surfaces of the large-span roof model and the guide beam model are fixedly provided with electromagnets;
Placing the turntable, the existing station building model, the pier column model, the large-span roof model and the guide beam model which are built on the turntable in a wind tunnel;
Under the electrifying state of the electromagnet, the turntable drives the existing station building model, the pier column model, the large-span roof model and the guide beam model to rotate to different angles, and wind tunnel tests are carried out on the existing station building model, the pier column model, the large-span roof model and the guide beam model at different wind direction angles;
and in the electromagnet power-off state, the large-span roof model and the guide beam model are pushed to the existing station house model for different distances.
In one embodiment, the attraction force between the electromagnet and the steel plate is not less than the wind attraction force in the wind tunnel test.
In one embodiment, in the wind tunnel test, the upward wind suction force is N, the total projection area of the large-span roof model and the guide beam model in the vertical direction is A, the magnetic suction force of one electromagnet is F i, the bearing area of one pier column model is A i, and the number N of electromagnets is more than or equal to (N/A) A i/Fi.
In one embodiment, the arrangement density of wind pressure measurement points in the edge region of the existing station house model is greater than the arrangement density of wind pressure measurement points in other regions.
Wherein, stride existing wired large-span roof top pushes away construction wind tunnel test model, include:
The method comprises the steps of setting an existing station room model and an pier column model on one side of the existing station room model facing an operation line;
Placing a large-span roof model on the pier column model, wherein one end of the large-span roof model facing the existing station house model is connected with a guide beam model;
The upper surfaces of the existing station building model and the pier column model are fixed with electromagnets, the large-span roof model and the lower surface of the guide beam model are fixed with steel plates, or the upper surfaces of the existing station building model and the pier column model are fixed with steel plates, and the large-span roof model and the lower surface of the guide beam model are fixed with electromagnets.
In one embodiment, in the wind tunnel test, the upward wind suction force is N, the total projection area of the large-span roof model and the guide beam model in the vertical direction is A, the magnetic suction force of one electromagnet is F i, the bearing area of one pier column model is A i, and the number N of electromagnets is more than or equal to (N/A) A i/Fi.
In one embodiment, the arrangement density of wind pressure measuring points is gradually increased from the center to the edge of the model in a direction perpendicular to the boundary line of the existing station house model.
In one embodiment, the pier stud model, the large span roof model and the guide beam model are made of ABS materials.
In one embodiment, the electromagnet or the steel plate is adhered by epoxy resin glue.
In one embodiment, the steel plates fixed on the upper surfaces of the existing station house model and the pier column model are in a guide rail shape which is consistent along the pushing direction, and the electromagnet arranged under the large-span roof model is provided with a groove or a boss matched with the guide rail.
In the large-span roof pushing construction wind tunnel test method of the overspan existing line, a large-span roof model is placed on the pier column model, electromagnets are fixed on the upper surfaces of the existing station room model and the pier column model, steel plates are fixed on the lower surfaces of the large-span roof model and the guide beam model, or steel plates are fixed on the upper surfaces of the existing station room model and the pier column model, and electromagnets are fixed on the lower surfaces of the large-span roof model and the guide beam model; under the electrifying state of the electromagnet, the turntable drives the existing station building model, the pier column model, the large-span roof model and the guide beam model to rotate to different angles, and wind tunnel tests are carried out on the existing station building model, the pier column model, the large-span roof model and the guide beam model at different wind direction angles; and in the electromagnet power-off state, the large-span roof model and the guide beam model are pushed to the existing station house model for different distances. In the technical scheme provided by the application, the electromagnet is powered off to realize demagnetization, the magnetic attraction is eliminated, the large-span roof model and the guide beam model are separated from the existing station house model and the pier column model, and the large-span roof model and the guide beam model move forwards by corresponding distances according to the requirement of a pushing procedure; the electromagnet is electrified again to generate magnetic attraction, the large-span roof model and the guide beam model are connected with the existing station house model and the pier column model into a whole, and a wind tunnel test corresponding to the next pushing procedure is carried out, so that the situation that the large-scale roof structure is subjected to multiple structural system conversion in construction can be dealt with, and a basis is provided for the safe construction of the main structure.
The wind tunnel test method for pushing construction of the upspan existing long-span roof provided by the invention provides a connection and release method for generating magnetic attraction by electrifying and eliminating the magnetic attraction by cutting off the power through the electromagnetic action of the electromagnet, and improves the connection and release efficiency between the existing station house model and the pier column model and between the existing station house model and the pier column model. When wind tunnel test is carried out on the whole pushing construction process, a plurality of models are not required to be manufactured, test cost is saved, and test time is shortened.
The application also provides a large-span roof pushing construction wind tunnel test model which spans the existing line, and the wind tunnel test model has the advantages of convenience in installation and easiness in operation and is not repeated.
For further clarity, various aspects and advantages of the disclosed embodiments will become apparent from the following description, or may be learned by practice of the disclosed embodiments.
Drawings
The accompanying drawings are included to provide a further understanding of the application, and are incorporated in and constitute a part of this specification, illustrate and do not limit the application.
FIG. 1 is a schematic diagram of a model built in a method for pushing a large-span roof to construct a wind tunnel test by an upward existing line provided in embodiment 1 of the present application;
Fig. 2 is a schematic structural diagram of an embodiment of the electromagnet and the steel plate according to example 1 of the present application.
Detailed Description
The principles and features of the present invention are described below with reference to the drawings, the examples are provided for illustration only and are not intended to limit the scope of the invention.
The existing building structure load standard (GB 50009-2012) in China has no definite wind-resistant design rule for complex large-span roof structures; meanwhile, when the interference effect of the existing structure outside the building is strong, the wind environment where the structure is located is more complex; in addition, the pressure characteristics of the large roof in the construction pushing process are completely different from the use stages after the construction. Therefore, in order to ensure the safety, economy and rationality of the pushing construction stage of the building structure, the wind load characteristic of the main structure in the pushing stage is necessarily determined according to the wind tunnel test result, and a basis is provided for the safe construction of the main structure.
Especially, in the pushing construction of the station building extension of the existing upward crossing line, the time of the construction window period is short, the interval between the construction window periods is long, the wind load characteristics of different stages in the pushing construction process are greatly changed, wind tunnel tests are needed to be carried out on structures in different stages, the wind load characteristics of the main structure in different pushing stages are determined according to wind tunnel test results, and a basis is provided for the safe construction of the main structure.
In the prior art, in order to meet research requirements under different working conditions, corresponding models are built when wind tunnel experiments are carried out on different structures, and if wind tunnel experiments are carried out on the whole construction process, a plurality of models are required to be manufactured, so that the test cost is greatly increased, and the test time is also greatly prolonged.
Example 1
The embodiment provides a wind tunnel test method for pushing construction of a large-span roof crossing an existing line, a turntable is arranged in a wind tunnel, a model is built on the turntable according to the actual size of a scaled-down project, and the model refers to fig. 1 for wind tunnel test.
Specifically, the wind tunnel test method comprises the following steps:
Building an existing station house model (not shown in fig. 1, which is to be on the rightmost side of fig. 1) on a turntable (not shown in fig. 1), and arranging an pier column model 4 on the side of the existing station house model (not shown in fig. 1) facing an operation line;
The rotary table can rotate around the axis of the rotary table.
The pier column models 4 are arranged in a plurality of rows, the arrangement direction of the pier column models in one row is parallel to the pushing direction, and one row of the pier column models comprises a support frame at the left side of the operation line and a temporary support frame built on a platform of the operation line;
Placing a large-span roof model 2 on the pier column model 4, and connecting a guide beam model 3 at one end of the large-span roof model 2 facing the existing station house model;
Wherein the meaning of placement includes the two not being fixed together, with only pressure due to gravity between the two;
in this embodiment, an electromagnet 1 is fixed on the upper surfaces of the existing station building model and the pier column model 4, and steel plates with small thickness are fixed on the lower surfaces of the large-span roof model 2 and the guide beam model 3;
The electromagnet 1 may be a sucker type electromagnet, and the sucker type electromagnet generates strong electromagnetic attraction when energized according to the electromagnetic conversion principle. In the wind tunnel test process, the positions of the existing station building model and the pier column model 4 on the turntable are unchanged, so that the sucker type electromagnet is arranged on the upper surfaces of the existing station building model and the pier column model 4, and the circuit connection of the sucker type electromagnet is facilitated. In other embodiments, steel plates may be fixed to the upper surfaces of the existing station building model and the pier column model, and electromagnets may be fixed to the lower surfaces of the large-span roof model and the girder model.
Placing the turntable and the existing station house model, the pier column model 4, the large-span roof model 2 and the guide beam model 3 which are built on the turntable in a wind tunnel;
In the electrifying state of the electromagnet 1, the turntable drives the existing station building model, the pier column model 4, the large-span roof model 2 and the guide beam model 3 to rotate to different angles, and wind tunnel tests are carried out on the existing station building model, the pier column model 4, the large-span roof model 2 and the guide beam model 3 at different wind direction angles;
the wind direction angle interval in the wind tunnel test is 15 degrees, and the effect of 25 wind directions is simulated in a range of 0-360 degrees;
And in the power-off state of the electromagnet 1, the large-span roof model 2 and the guide beam model 3 are pushed to the existing station house model for different distances according to the forward moving distance in the pushing procedure.
In the embodiment, firstly, a connection relation which is not fixed is implemented between structures with relative change of positions in the construction process, then, connection and release can be realized only through on-off of a circuit by utilizing electromagnetic action of an electromagnet, the realization mode is easy to operate and short in realization time, the connection and release efficiency between the existing station building model and the pier column model 4 and the large-span roof model 2 and the guide beam model 3 is improved (the power on and the power off can be completed in 0.5 second at the same time), and the operation steps are simplified.
By the method, multiple models are not required to be manufactured aiming at different structural systems in pushing construction, so that test cost is saved, and test time is shortened.
In this embodiment, the pier column model, the large-span roof model 2 and the girder model 3 are made of ABS materials.
In one embodiment, the electromagnet 1 or the steel plate is glued with an epoxy glue.
In a preferred embodiment, the steel plates fixed on the upper surfaces of the existing station house model and the pier column model are in a guide rail shape which is consistent along the pushing direction, and the electromagnet arranged under the large-span roof model is provided with a groove or a boss matched with the guide rail. In this embodiment, the guide rail-shaped steel plate can guide the moving direction of the electromagnet, thereby improving the accuracy and the moving efficiency of moving the large-span roof model.
Further, referring to fig. 2, a pointer 13 is provided to the electromagnet 1, and a scale is provided to the rail-shaped steel plate 5; one end of the pointer 13 is attached to the electromagnet 1, and the other end is bent toward the rail-shaped steel plate 5 and approaches the scale. The pointer 13 is used for reading the pushing distance of the structure connected with the guide rail-shaped steel plate 5, and through the implementation mode, the structure can be quickly and accurately pushed forward without using a measuring tool in the test and accurately placing the measuring tool, so that the wind tunnel test efficiency is further improved.
The suction force between the electromagnet and the steel plate is not smaller than the wind suction force generated in the wind tunnel test process, so that the existing station house model and the pier column model are ensured to be fixed with the large-span roof model and the guide beam model under the action of wind load.
The upward wind suction force generated in the wind tunnel test is N, the total projection area of the large-span roof model and the guide beam model in the vertical direction is A, the magnetic suction force of one electromagnet is F i, the bearing area of one pier column model is A i, and the number N of sucking disc electromagnets is not less than (N/A) A i/Fi.
The traditional wind pressure measuring point arrangement usually adopts a uniform arrangement method, and particularly for an open type flat plate structure, the wind pressure change is small, and the uniform arrangement of the wind pressure measuring points is a widely adopted scheme. In the embodiment, in the wind tunnel test method, the arrangement density of wind pressure measuring points in the edge area of the existing station building model is increased, so that the influence of the interference characteristics of the existing station building and other structures on the structure edge position of the large-span roof is obtained, and a more accurate basis is provided for the safe construction of the main structure.
Further, the arrangement density of the wind pressure measuring points is gradually increased from the center of the model to the edge of the model in the direction perpendicular to the boundary line of the existing station house model.
Example 2
The embodiment provides a wind tunnel test model for pushing construction of a large-span roof crossing an existing line, and referring to fig. 1, the wind tunnel test model comprises:
an existing station building model (not shown in fig. 1, should be on the rightmost side of fig. 1) and a pier column model 4, and the pier column model 4 is arranged on the side of the existing station building model facing the operation line;
Placing a large-span roof model 2 on the pier column model 4, wherein one end of the large-span roof model 2 facing the existing station house model is connected with a guide beam model 3;
And the electromagnet 1 is fixed on the upper surfaces of the existing station house model and the pier column model, and the steel plates are fixed on the lower surfaces of the large-span roof model 2 and the guide beam model 3.
The pier column models 4 are arranged in a plurality of rows, the arrangement direction of the pier column models in one row is parallel to the pushing direction, and the pier column models in one row comprise support frames on the left side of the operation line and temporary support frames built on a platform of the operation line.
Wherein the meaning of placement includes that the two are not fixed together, with only pressure due to gravity between the two.
In this embodiment, an electromagnet 1 is fixed on the upper surface of the pier column model in the existing station house model and the pier column model 4, and a steel plate with small thickness is fixed on the lower surfaces of the large-span roof model 2 and the guide beam model 3;
The electromagnet 1 can be a sucker type electromagnet, and the sucker type electromagnet generates strong electromagnetic attraction force when electrified according to the electromagnetic conversion principle. The positions of the existing station building model and the pier column model 4 are unchanged in the wind tunnel test process, so that the sucker type electromagnet is arranged on the upper surfaces of the pier column models in the existing station building model and the pier column model 4, and circuit connection of the sucker type electromagnet is facilitated; in other embodiments, steel plates may be fixed on the upper surfaces of the existing station building model and the pier column model, and electromagnets may be fixed on the lower surfaces of the large-span roof model and the girder model.
When wind tunnel test is carried out, the model is installed on a turntable which can rotate around the axis of the model. When the electromagnet 1 is electrified, the turntable drives the existing station building model, the pier column model 4, the large-span roof model 2 and the guide beam model 3 to rotate, so that wind tunnel tests are carried out on the existing station building model, the pier column model 4, the large-span roof model 2 and the guide beam model 3 at different wind direction angles;
In the range of 0-360 degrees, the wind direction angle interval in the test is 15 degrees, and the effect of 25 wind directions is simulated altogether;
When the electromagnet 1 is powered off, the large-span roof model 2 and the guide beam model 3 are pushed to the existing station house model according to the forward moving distance required by the pushing procedure.
In the embodiment, firstly, a connection relation which is not fixed is implemented between structures with relative change of positions in the construction process, then, connection and release can be realized only through on-off of a circuit by utilizing electromagnetic action of an electromagnet, the realization mode is easy to operate and short in realization time, the connection and release efficiency between the existing station building model and the pier column model 4 and the large-span roof model 2 and the guide beam model 3 is improved (the power on and the power off can be completed in 0.5 second at the same time), and the operation steps are simplified.
According to the technical scheme provided by the application, different structural systems in pushing construction can be dealt with only by manufacturing one model, so that the test cost is saved, and the test time is shortened.
In this embodiment, the pier column model, the large-span roof model 2 and the girder model 3 are made of ABS materials.
In one embodiment, the electromagnet 1 or the steel plate is glued with an epoxy glue.
In a preferred embodiment, the steel plates fixed on the upper surfaces of the existing station house model and the pier column model are in a guide rail shape which is consistent along the pushing direction, and the electromagnet arranged under the large-span roof model is provided with a groove or a boss matched with the guide rail. In this embodiment, the guide rail-shaped steel plate can guide the moving direction of the electromagnet, thereby improving the accuracy and the moving efficiency of moving the large-span roof model.
Further, referring to fig. 2, a pointer 13 is provided to the electromagnet 1, and a scale is provided to the rail-shaped steel plate 5; one end of the pointer 13 is attached to the electromagnet 1, and the other end is bent toward the rail-shaped steel plate 5 and approaches the scale. The pointer 13 is used for reading the pushing distance of the structure connected with the guide rail-shaped steel plate 5, and through the embodiment, the structure can be quickly and accurately pushed forward without using a measuring tool in the test and accurately placing the measuring tool, so that the wind tunnel test efficiency is further improved.
The suction force between the electromagnet and the steel plate is not smaller than the wind suction force generated in the wind tunnel test process, so that the existing station house model and the pier column model are ensured to be fixed with the large-span roof model and the guide beam model under the action of wind load.
The upward wind suction force generated in the wind tunnel test is N, the total projection area of the large-span roof model and the guide beam model in the vertical direction is A, the magnetic suction force of one electromagnet is F i, the bearing area of one pier column model is A i, and the number N of sucking disc electromagnets is not less than (N/A) A i/Fi.
The traditional wind pressure measuring point arrangement usually adopts a uniform arrangement method, and particularly for an open type flat plate structure, the wind pressure change is small, and the uniform arrangement method is a widely adopted scheme. In the embodiment, in the wind tunnel test method, the arrangement density of wind pressure measuring points in the edge area of the existing station building model is increased, so that the influence of the interference characteristics of the existing station building and other structures on the structure edge position of the large-span roof is obtained, and a more accurate basis is provided for the safe construction of the main structure.
Further, the arrangement density of the wind pressure measuring points is increased from the center of the model to the edge of the model in the direction perpendicular to the boundary line of the existing station house model.
In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present technical solution and simplifying the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present technical solution.
In the present technical solution, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present technical solution can be understood by those skilled in the art according to specific circumstances.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present technical solution. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present application have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the application, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the application.
Claims (10)
1. The wind tunnel test method for pushing construction of the large-span roof crossing the existing line is characterized by comprising the following steps of:
Building an existing station building model on a turntable, and arranging a pier column model on one side of the existing station building model facing an operation line;
Placing a large-span roof model on the pier column model, and connecting a guide beam model at one end of the large-span roof model facing the existing station house model;
The upper surfaces of the existing station building model and the pier column model are fixedly provided with electromagnets, the lower surfaces of the large-span roof model and the guide beam model are fixedly provided with steel plates, or the upper surfaces of the existing station building model and the pier column model are fixedly provided with steel plates, and the lower surfaces of the large-span roof model and the guide beam model are fixedly provided with electromagnets;
Placing the turntable, the existing station building model, the pier column model, the large-span roof model and the guide beam model which are built on the turntable in a wind tunnel;
Under the electrifying state of the electromagnet, the turntable drives the existing station building model, the pier column model, the large-span roof model and the guide beam model to rotate to different angles, and wind tunnel tests are carried out on the existing station building model, the pier column model, the large-span roof model and the guide beam model at different wind direction angles;
and in the electromagnet power-off state, the large-span roof model and the guide beam model are pushed to the existing station house model for different distances.
2. The wind tunnel test method according to claim 1, wherein a suction force between the electromagnet and the steel plate is not less than a wind suction force in the wind tunnel test.
3. The wind tunnel test method according to claim 2, wherein the upward wind suction force in the wind tunnel test is N, the total projection area of the large-span roof model and the guide beam model in the vertical direction is A, the magnetic suction force of one electromagnet is F i, the bearing area of one pier column model is A i, and the number N of electromagnets is not less than (N/A) A i/Fi.
4. The wind tunnel test method according to claim 1, wherein the arrangement density of wind pressure measurement points in the edge region of the existing station house model is larger than the arrangement density of wind pressure measurement points in other regions.
5. The large-span roof pushing construction wind tunnel test model crossing the existing line is characterized by comprising the following components:
The method comprises the steps of setting an existing station room model and an pier column model on one side of the existing station room model facing an operation line;
Placing a large-span roof model on the pier column model, wherein one end of the large-span roof model facing the existing station house model is connected with a guide beam model;
The upper surfaces of the existing station building model and the pier column model are fixed with electromagnets, the large-span roof model and the lower surface of the guide beam model are fixed with steel plates, or the upper surfaces of the existing station building model and the pier column model are fixed with steel plates, and the large-span roof model and the lower surface of the guide beam model are fixed with electromagnets.
6. The wind tunnel test model according to claim 5, wherein the upward wind suction force in the wind tunnel test is N, the total projection area of the large-span roof model and the guide beam model in the vertical direction is A, the magnetic suction force of one electromagnet is F i, the bearing area of one pier column model is A i, and the number N of electromagnets is not less than (N/A) A i/Fi.
7. The wind tunnel test model according to claim 5, wherein the arrangement density of wind pressure measurement points is gradually increased from the center to the edge of the model in a direction perpendicular to the boundary line of the existing station house model.
8. The wind tunnel test model of claim 5, wherein the pier stud model, the large span roof model, and the pilot beam model are fabricated from ABS material.
9. The wind tunnel test model according to claim 5, wherein the electromagnets or the steel plates are adhered by epoxy resin glue.
10. The wind tunnel test model according to claim 5, wherein the steel plates fixed on the upper surfaces of the existing station house model and the pier column model are in a guide rail shape which is consistent along the pushing direction, and the electromagnet arranged under the large-span roof model is provided with a groove or a boss matched with the guide rail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410371021.8A CN117969008B (en) | 2024-03-29 | 2024-03-29 | Wind tunnel test method and model for pushing construction of large-span roof crossing existing line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410371021.8A CN117969008B (en) | 2024-03-29 | 2024-03-29 | Wind tunnel test method and model for pushing construction of large-span roof crossing existing line |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117969008A true CN117969008A (en) | 2024-05-03 |
| CN117969008B CN117969008B (en) | 2024-06-11 |
Family
ID=90858116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410371021.8A Active CN117969008B (en) | 2024-03-29 | 2024-03-29 | Wind tunnel test method and model for pushing construction of large-span roof crossing existing line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117969008B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050068121A (en) * | 2003-12-29 | 2005-07-05 | 주식회사 에이브이티 | Sound proof wall using roof with sound absorbing material complicatedly laminated with membranes |
| US20140374395A1 (en) * | 2013-06-24 | 2014-12-25 | Illinois Tool Works Inc. | Modular power conversion system and method |
| CN107860547A (en) * | 2017-11-08 | 2018-03-30 | 重庆交通大学 | A kind of integrated environment wind tunnel simulation device |
| CN110274745A (en) * | 2019-07-11 | 2019-09-24 | 重庆恩倍克科技有限公司 | It is capable of the experimental system of simulant building roof system continuous destructive process under high wind |
| CN212321037U (en) * | 2020-08-25 | 2021-01-08 | 大连理工大学 | Natural wind field vortex vibration test device for super-large-proportion aeroelastic model of long-span continuous steel box girder bridge |
| CN114166454A (en) * | 2021-11-23 | 2022-03-11 | 重庆交通大学 | Low building wind load simulation house with replaceable roof tiles |
| CN114878191A (en) * | 2021-12-21 | 2022-08-09 | 长沙理工大学 | Test loading device and method for simulating complex load of large-span open-hole roof structure |
| CN114910238A (en) * | 2022-05-09 | 2022-08-16 | 浙江大学 | Wind tunnel test device for flat roof eave form multi-working-condition change |
| CN115901162A (en) * | 2023-03-02 | 2023-04-04 | 中国电建集团西北勘测设计研究院有限公司 | Wind and snow environment wind tunnel simulation device for green development of urban and rural construction |
| CN116025096A (en) * | 2022-07-13 | 2023-04-28 | 浙江欧纳克智能科技有限公司 | Magnetic suspension intelligent movable opening and closing roof |
-
2024
- 2024-03-29 CN CN202410371021.8A patent/CN117969008B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050068121A (en) * | 2003-12-29 | 2005-07-05 | 주식회사 에이브이티 | Sound proof wall using roof with sound absorbing material complicatedly laminated with membranes |
| US20140374395A1 (en) * | 2013-06-24 | 2014-12-25 | Illinois Tool Works Inc. | Modular power conversion system and method |
| CN107860547A (en) * | 2017-11-08 | 2018-03-30 | 重庆交通大学 | A kind of integrated environment wind tunnel simulation device |
| CN110274745A (en) * | 2019-07-11 | 2019-09-24 | 重庆恩倍克科技有限公司 | It is capable of the experimental system of simulant building roof system continuous destructive process under high wind |
| CN212321037U (en) * | 2020-08-25 | 2021-01-08 | 大连理工大学 | Natural wind field vortex vibration test device for super-large-proportion aeroelastic model of long-span continuous steel box girder bridge |
| CN114166454A (en) * | 2021-11-23 | 2022-03-11 | 重庆交通大学 | Low building wind load simulation house with replaceable roof tiles |
| CN114878191A (en) * | 2021-12-21 | 2022-08-09 | 长沙理工大学 | Test loading device and method for simulating complex load of large-span open-hole roof structure |
| CN114910238A (en) * | 2022-05-09 | 2022-08-16 | 浙江大学 | Wind tunnel test device for flat roof eave form multi-working-condition change |
| CN116025096A (en) * | 2022-07-13 | 2023-04-28 | 浙江欧纳克智能科技有限公司 | Magnetic suspension intelligent movable opening and closing roof |
| CN115901162A (en) * | 2023-03-02 | 2023-04-04 | 中国电建集团西北勘测设计研究院有限公司 | Wind and snow environment wind tunnel simulation device for green development of urban and rural construction |
Non-Patent Citations (6)
| Title |
|---|
| 单文姗等: "高低跨柱面屋盖的风荷载特性研究", 建筑结构学报, vol. 39, no. 1, 25 September 2018 (2018-09-25) * |
| 周德良;李霆;钱屹;张卫;熊森;曹登武;汪心旺;杨世钊;汪秋风;谭;赵福令: "杭州东站站房主体结构设计与分析", 建筑结构, no. 07, 15 July 2011 (2011-07-15) * |
| 王煜成: "基于现场实测的大跨度空间结构表面风荷载特性研究", 中国博士学位论文全文数据库 (工程科技Ⅱ辑), vol. 2018, no. 12, 15 December 2018 (2018-12-15) * |
| 王煜成等: "大跨空间结构屋盖表面风荷载实测方法研究进展", 第十六届空间结构学术会议论文集, 24 October 2016 (2016-10-24) * |
| 韩倩文: "霍山县体育场风洞试验研究与分析", 中国优秀硕士学位论文全文数据库 (工程科技Ⅱ辑), vol. 2019, no. 01, 15 January 2019 (2019-01-15) * |
| 高涛: "某铁路客站站房及雨棚风洞试验研究及分析", 铁道标准设计, no. 06, 22 May 2018 (2018-05-22) * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117969008B (en) | 2024-06-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109115123A (en) | A kind of coated surface type face method for testing precision | |
| CN117969008B (en) | Wind tunnel test method and model for pushing construction of large-span roof crossing existing line | |
| CN103257593A (en) | Numerical physical hybrid simulation system of grid-connected photovoltaic power generating system | |
| CN105841913A (en) | Wind tunnel based on intelligent interactive platform | |
| CN202583889U (en) | DCS monitoring laser calibration solar condensing reflecting mirror positioning device | |
| CN113125104A (en) | Dynamic response testing device and method of membrane structure under wind-driven rain load action | |
| CN109921685A (en) | A kind of wind energy collecting device based on piezoelectric effect | |
| CN109440987A (en) | A kind of construction method of the element type curtain wall of super high-rise building | |
| CN205003441U (en) | Exposure machine is directly write to two mesa laser | |
| CN108931353B (en) | The manufacturing method of continuous shell air spring pole for tall and slender structure wind tunnel test | |
| CN107860335B (en) | Three-dimensional laser scanner applied to actual measurement in building industry | |
| CN214583948U (en) | Dynamic response testing device of membrane structure under wind-driven rain load effect | |
| CN112197936A (en) | Flutter wind tunnel model of airplane winglet and manufacturing method thereof | |
| CN215832973U (en) | Device for measuring aerodynamic interference effect between bridges in wind tunnel test | |
| CN206581398U (en) | A kind of attachment structure of 3D building modules Z-type keel wall and beam | |
| CN113670568A (en) | Device for measuring aerodynamic interference effect between bridges in wind tunnel test | |
| CN210531057U (en) | Wind power generation blade girder positioning device | |
| CN110689795A (en) | Well Russian trade transportation route planning analogue means | |
| CN204356997U (en) | Multicarity combines huge post | |
| CN217786496U (en) | Impact force measurement test device under glazed tile hail disaster of urban building | |
| CN109870261A (en) | A kind of lower resistance magnetic suspension platform for microdriver thrust measurement | |
| CN213700558U (en) | Special laser positioning gluing die for installation of EMAS unit body | |
| CN212748317U (en) | Automatic measurement system applied to illumination intensity calibration of sunlight simulation test | |
| CN210263586U (en) | Fold level molding light gauge steel structure | |
| CN114383676A (en) | Double-track mobile intelligent optical flow measuring system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |