Search

CN-120521825-B - Wind tunnel test device for simulating internal and external wind pressure of actual open-pore short building

CN120521825BCN 120521825 BCN120521825 BCN 120521825BCN-120521825-B

Abstract

The invention relates to a wind tunnel test device for simulating wind pressure inside and outside a low building with actual holes, wherein a house body is detachably arranged at the top of a rotating disc, a door and a window are arranged on one side of the house body, the top is in a herringbone shape, a plurality of roof modules are arranged on two sides of the roof module, the roof module comprises a mounting plate and a plurality of tiles, rectangular holes corresponding to the tiles are formed in the top of the mounting plate, electromagnetic bars for fixing the tiles in the mounting plate are arranged on two sides of the tiles, a turnover mechanism is used for fixing the mounting plate on a driving piece through a clamping piece and then driving the mounting plate to turn over by the driving piece so as to open the roof module, an opening and closing assembly is used for adjusting the lifting piece to move to the position below the corresponding tiles through an adjusting piece to perform opening and closing operation, a transmitter for simulating the damage of a flying object is arranged on a fixing rod, and a control piece is used for controlling the random movement of the lifting piece.

Inventors

  • WU FENGBO
  • CHEN BO
  • YANG QINGSHAN
  • JIANG YAN
  • HUANG GUOQING
  • LIU MIN

Assignees

  • 重庆交通大学

Dates

Publication Date
20260508
Application Date
20250522

Claims (8)

  1. 1. A wind tunnel test device for simulating the wind pressure inside and outside a low building with actual holes is characterized by comprising a house body (3) with a herringbone top and a plurality of rows of roof modules (6) uniformly arranged on two sides, each roof module (6) comprises a strip-shaped mounting plate (11) and a plurality of tiles (12) arranged on the mounting plate (11), rectangular holes corresponding to the tiles (12) are formed in the top of the mounting plate (11), the tiles (12) are hinged in the rectangular holes through hinges (26), electromagnetic iron strips (27) for fixing the tiles (12) in the mounting plate (11) are arranged on two sides of the tiles (12), grooves (28) are formed in the bottom of the middle of the tiles (12), an adjusting piece and a jacking piece for opening and closing the tiles (12) are arranged in the house body (3), the adjusting piece comprises a mounting frame (29) fixedly arranged in the house body (3), a second screw (30) is rotatably arranged in the mounting frame (29) through a bearing, one side of the mounting frame (29) is fixedly connected with a third motor (31), an output end of the third motor (31) is fixedly connected with the second screw (30) through the bearing, a sliding screw (32) is arranged in the second screw (30) in the sliding sleeve (32) through the second screw (30), a fourth motor (34) is fixedly connected in the moving strip (32), a moving block (35) sleeved on the third screw rod (33) is arranged on the moving strip (32) in a sliding mode, the jacking piece comprises an electric push rod (36) penetrating and fixedly arranged in the moving block (35), and an electromagnetic iron ball (37) matched with a groove (28) at the bottom of the tile (12) is welded at the output end of the electric push rod (36).
  2. 2. Wind tunnel test device according to claim 1, characterized in that the two sides of the house body (3) are provided with turnover mechanisms consisting of driving parts and clamping parts, the driving parts comprise two rotating seats (13) fixedly connected to one side of the house body (3) and arranged up and down, a driving rod (17) is rotatably arranged between the two rotating seats (13) through a bearing, and the clamping parts are matched with corresponding mounting plates (11) through the driving rod (17) to realize turnover actions of the mounting plates (11).
  3. 3. The wind tunnel test device according to claim 2, wherein the outer side of the upper rotating seat (13) is fixedly connected with a first motor (14), the output end of the first motor (14) is fixedly connected with a driving rod (17), the bottom end of the mounting plate (11) is welded with a first connecting ring (18), the first connecting ring (18) is rotationally sleeved on the driving rod (17), the outer side of the lower rotating seat (13) is fixedly connected with a second motor (15), the output end of the second motor (15) is fixedly connected with a first screw (16), a nut block (25) is sleeved on the outer wall thread of the first screw (16), the nut block 25) is slidably arranged on one side of the house body (3) through a guide rail, the top of the nut block (25) is connected with a semicircle ring (23) through a connecting column (24), a second connecting ring (19) is slidably arranged in the semicircle ring (23) through two annular sliding strips (21), and the second connecting ring (19) is sleeved on the first connecting ring (18).
  4. 4. A wind tunnel test device according to claim 3, characterized in that the outer walls of the first connecting ring (18) and the driving rod (17) are provided with rectangular openings (20), and that the two rectangular openings (20) are internally provided with key pins (22) fixedly mounted on the inner wall of the second connecting ring (19).
  5. 5. Wind tunnel test device according to claim 1, characterized in that it further comprises a rotating disc (2) for placing the house body (3) and a fixed disc (1) rotatably connected outside the rotating disc (2), wherein one side of the house body (3) is provided with a door (4) and a window (5), the fixed disc (1) is uniformly and fixedly provided with a plurality of brackets (39) with fan blades (42), and the rotating disc (2) is fixedly provided with a fan (9) which is convenient for providing power for the fan blades (42) in the brackets (39).
  6. 6. The wind tunnel test device according to claim 5, wherein a rotating ring (41) is rotatably arranged in the bracket (39) through a bearing, an electromagnet ring (40) sleeved outside the rotating ring (41) is fixedly connected to the upper side of the bracket (39), a fan blade (42) matched with the fan (9) for use and fixedly connected with the rotating ring (41) at the blade end is arranged in the rotating ring (41), a control strip (43) with a gap between the control strip and the electromagnet ring (40) is fixedly arranged on the outer wall of the rotating ring (41), and a plurality of proximity switches matched with the control strip (43) are embedded on one side, close to the control strip (43), of the electromagnet ring (40).
  7. 7. Wind tunnel test device according to claim 1, characterized in that the roof of the house body (3) is fixedly provided with a backbone (38), the backbone (38) is made of an electromagnet, and the top of the roof module (6) is fixed by the backbone (38) to ensure the stability of the roof module (6).
  8. 8. Wind tunnel test device according to claim 5, characterized in that the outside of the fixed disc (1) is provided with a fixed rod (8), and the fixed rod (8) is provided with a transmitter (7) facilitating the simulation of the emission of the projectile.

Description

Wind tunnel test device for simulating internal and external wind pressure of actual open-pore short building Technical Field The invention belongs to the technical field of wind tunnel tests, relates to a wind tunnel test device for simulating internal and external wind pressure of an actual open-pore low building, and particularly relates to a wind tunnel test device for simulating internal and external wind pressure of an actual open-pore low building under the coupling effect of a flying object and wind pressure. Background Wind pressure is a key factor that cannot be ignored in the design and evaluation of low-rise buildings. Wind pressure not only affects the overall structural safety of the building, but also directly affects the comfort inside the building. Particularly for buildings designed with windows, doors or other openings, the distribution and variation of wind pressure may create a pressure concentration at these openings, which may pose a threat to the safety of the building. In addition, variations in wind pressure can also cause non-uniformity in the air flow within the building, affecting occupant comfort. Therefore, accurate assessment of the impact of wind pressure on low-rise buildings is critical to ensuring safety and comfort of the building. In addition to the effects of wind pressure itself, the impact of the projectile (e.g., debris in a storm) on the building surface is also an important consideration. The coupling of these flies with wind pressure may create additional pressure on the building surface, especially at the openings, which may be more concentrated, increasing the risk of damage to the building structure. Under extreme weather conditions, such as hurricanes or tornadoes, the coupled effects of the impact of the flyer and wind pressure can cause serious damage to low-rise buildings. Therefore, the wind tunnel test device capable of effectively simulating the coupling effect is designed, and has important significance for evaluating and improving the wind resistance and the structural safety of the short building. The existing wind tunnel test device can only simulate single wind pressure action or simple tapping condition, and is difficult to comprehensively simulate the influence of the coupling action of the flying object and wind pressure on a tapping building under actual working conditions. This limitation limits the accurate assessment of the performance of a building structure under complex wind pressure conditions. Therefore, development of a new wind tunnel test device is urgently needed, and the device can simulate complex working conditions such as arbitrary hole opening of a roof, hole opening of a wall surface, simultaneous hole opening of the wall surface and the roof, and the like. In addition, the device can simulate the impact of the flying object on the surface of the building and the coupling effect of the impact and wind pressure, so that the internal and external wind pressure distribution condition of the low building under the coupling effect of wind pressure and the flying object can be more accurately estimated. The development of such devices would provide more scientific and accurate data support for the design and evaluation of low-rise buildings, contributing to improved safety and comfort of the building. Disclosure of Invention In view of the above, the invention provides a wind tunnel test device for simulating internal and external wind pressure of a low building with actual holes, which aims to solve the problems that the conventional wind tunnel test device can only simulate single wind pressure action or simple hole opening condition, and is difficult to comprehensively simulate the influence of the coupling action of the flying object and wind pressure on the hole opening building under actual working conditions, and the simulation effect is poor. In order to achieve the above purpose, the present invention provides the following technical solutions: a wind tunnel test device for simulating internal and external wind pressure of an actual open-cell low building, comprising: a fixed disk in which a rotating disk is rotatably provided; the house body is detachably arranged at the top of the rotating disc, one side of the house body is provided with a door and a window, the top is in a herringbone shape, two sides of the house body are provided with a plurality of roof modules, and the top is fixedly provided with a spine for fixing the roof modules; The roof module comprises a mounting plate and a plurality of tiles, rectangular holes corresponding to the tiles are formed in the top of the mounting plate, the tiles are hinged in the rectangular holes through hinges, and electromagnetic iron strips for fixing the tiles in the mounting plate are arranged on two sides of the tiles; The turnover mechanism is arranged at two sides of the house body and comprises a driving piece and a clamping piece, the mounting plate is fixed on the dr