Simple device for detecting wind load bearing capacity of metal profiled sheet

Abstract

The utility model discloses a metal profiled sheet wind resistance bearing capacity detection simple and easy device, including installation platform, be provided with a plurality of adjustable purlin interval on the installation platform, the below of installation platform is provided with counterforce frame, be provided with the push beam of vertical direction sliding on the counterforce frame, the above of push beam is provided with at least one force transmission beam, be provided with and the contact of force mechanism of push beam below on the counterforce frame. The utility model simple structure, convenient installation and can be repeatedly used, its structure can be arranged according to actual engineering condition to true simulation roof panel's stress state in actual engineering. Among them, the adjusting sliding slot of longitudinal beam setting is matched with T slide, makes purlin interval can be adjusted according to different engineering demand fast, flexible, further enhanced the applicability of device and simulation accuracy.

Description

Technical Field

[0001] This utility model relates to the field of building structure engineering testing technology, and more specifically to a simple device for testing the wind resistance capacity of metal profiled sheets. Background Technology

[0002] As a crucial component of building envelopes, the wind resistance performance of metal profiled sheet systems directly impacts building safety. Currently, the primary method for assessing the wind load-bearing capacity of metal roofing systems is full-scale prototype testing. These tests typically require specialized laboratories, utilizing large reaction walls, wind turbines, and complex monitoring and control systems. However, the construction cost of such testing facilities is extremely high, they have stringent requirements for the testing site, and the testing cycle is lengthy and the process complex, making it difficult to conduct rapid and flexible verification and scheme comparison during the early design phase or on-site construction.

[0003] Therefore, in the field of architectural design and construction, there has been an urgent need for a simple testing device that is structurally simple, low-cost, easy to install and adjust, and capable of realistically simulating the overall effect of wind pressure loads on metal roofing systems. Such a device can help engineers quickly assess the wind resistance performance of roofing systems with different structures and panel types on-site or in conventional workshops, thereby providing effective data support for optimizing designs and ensuring project safety and economy. Utility Model Content

[0004] This invention provides a simple device for testing the wind resistance of metal profiled sheets, which can simulate wind pressure loads at low cost and conveniently to test the wind resistance of metal roofing systems.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a simple device for testing the wind resistance capacity of metal profiled sheets, comprising an installation platform, on which are arranged a plurality of purlins with adjustable spacing, a reaction frame below the installation platform, a pushing beam sliding vertically on the reaction frame, at least one force transmission beam above the pushing beam, and a force application mechanism in contact with the lower part of the pushing beam on the reaction frame. The purlins with adjustable spacing on the installation platform are used to fix the roof system test specimen according to actual engineering conditions.

[0006] Furthermore, the installation platform includes a frame composed of longitudinal beams and transverse beams. The longitudinal beams are provided with horizontal adjustment grooves, and T-shaped sliders connected to the purlins are slidably installed within these grooves. Locking devices are provided on the T-shaped sliders. The stepless adjustment of the purlin spacing is achieved through the T-shaped sliders and locking devices.

[0007] Furthermore, the reaction frame is an inverted gate-shaped structure, including a gate beam and two gate posts. The upper ends of the two gate posts are fixedly connected to the lower part of the installation platform. The inner sidewall of each gate post is provided with a vertical adjustment groove that slides in conjunction with the push beam. The sliding method of the push beam is the same as that of the purlin adjustment, and is also achieved through a T-shaped slider and a locking device.

[0008] Furthermore, the push beam is a channel steel, and its web has several upper connecting holes in the middle for connecting with the force transmission beam.

[0009] Furthermore, the force transmission beam is an I-beam or channel steel, and its lower end is provided with a lower connecting hole for connection with the push beam.

[0010] Furthermore, the force transmission beam is positioned perpendicular to the push beam to ensure direct and effective force transmission.

[0011] Furthermore, the purlin is provided with a connecting support for fixing to the metal profiled sheet to be tested.

[0012] Furthermore, the force-applying mechanism is a hydraulic instrument, which is fixedly installed on the reaction frame, with the end of its piston rod in contact with the lower surface of the push beam.

[0013] Furthermore, multiple hydraulic devices are provided, arranged symmetrically / uniformly along the length of the reaction frame, and connected to the same hydraulic control system to achieve synchronous operation and ensure uniform loading.

[0014] Furthermore, the installation platform is equipped with several columns.

[0015] The working principle of this utility model is as follows: a force-applying mechanism (such as a hydraulic instrument) pushes a push beam, which, through a vertically arranged force-transmitting beam, converts the applied force into upward pressure on the metal roofing components installed on the purlins, thereby accurately simulating wind pressure loads. Compared with the prior art, this utility model has the following beneficial effects: This utility model features a simple structure that is easy to manufacture, convenient to install, and reusable. Its design can be customized according to actual engineering conditions to realistically simulate the stress state of roof panels in real-world engineering projects. The continuous sliding grooves on the longitudinal beams, in conjunction with the T-shaped sliders, allow for quick and flexible adjustment of the purlin spacing to meet different engineering needs, further enhancing the applicability and simulation accuracy of the device. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of the present utility model; Figure 2 This is a three-dimensional structural diagram of the installation platform in an embodiment of this utility model; Figure 3 This is a three-dimensional structural diagram of the longitudinal beam in an embodiment of this utility model; Figure 4 This is a detailed drawing of the T-shaped slider structure in an embodiment of this utility model; Figure 5 This is a schematic diagram of the connection between the T-shaped slider and the purlin in an embodiment of this utility model; Figure 6 This is a schematic diagram of the connection between the reaction frame and the hydraulic instrument in an embodiment of this utility model; Figure 7 This is a schematic diagram of the connection between the pushing beam and the force transmission beam in an embodiment of this utility model; Figure 8 This is a schematic diagram of the push beam structure in an embodiment of this utility model; Figure 9 This is a schematic diagram of the force transmission beam structure in an embodiment of this utility model.

[0017] Reference numerals: 1. Mounting platform; 11. Column; 12. Horizontal beam; 13. Longitudinal beam; 1311. Horizontal adjusting slide; 132. Horizontal T-slider; 1321. T-plate; 13211. Horizontal section; 13212. Mounting hole A; 13213. Vertical section; 13214. Mounting hole B; 1322. Shim; 1323. Fastening bolt; 14. Purlin; 141. Mounting hole C; 2. Reaction frame; 21. Door beam; 22. Door post; 221. Vertical adjusting slide; 222. Vertical T-slider; 3. Hydraulic gauge; 4. Push beam; 41. Fixing hole; 42. Upper connecting hole; 5. Force transmission beam; 51. Lower connecting hole; 6. Connecting support; 7. Metal profiled sheet. Detailed Implementation

[0018] The following is in conjunction with the appendix Figures 1-9 The specific implementation method of the simple device for testing the wind resistance capacity of metal profiled sheets according to this utility model will be further described in detail.

[0019] A simple device for testing the wind resistance of metal profiled sheets consists of an installation platform 1 forming the rigid foundation of the device, which is a rectangular frame welded together from four columns 11, two crossbeams 12, and two longitudinal beams 13.

[0020] The columns 11, crossbeams 12, and longitudinal beams 13 are all made of steel and connected by welding. The columns 11 can have square, rectangular, circular, or other cross-sectional shapes; in this embodiment, a square cross-section is used. There can be four columns 11, or the number of columns can be increased according to load requirements; in this embodiment, four columns are used. The two longitudinal beams 13 are symmetrically arranged on the left and right sides and welded to the columns 11. Their length can be determined according to the project requirements but is not less than 3 meters. The crossbeams 12 can have square or rectangular cross-sections; in this embodiment, a square cross-section is used. The two crossbeams are symmetrically arranged on the left and right sides and welded to the columns 11. Their length can be determined according to the project requirements but is not less than 2 meters.

[0021] The inner side of the longitudinal beam 13 is machined with a continuous horizontal adjusting groove 1311. Multiple purlins 14 (the purlins can adopt channel, I-shaped, or U-shaped cross-sections according to actual engineering requirements; in this example, a C-shaped cross-section is used) are installed in this groove via T-shaped sliders 132. The T-shaped slider 132 consists of a T-shaped plate 1321, a gasket 1322, and a fastening bolt 1323 as a locking element. The T-shaped plate 1321 is vertically welded from shaped steel or flat steel plate. Mounting holes A 13212 are provided at the middle positions on both sides of its horizontal section 13211; purlin mounting holes B 13214 are provided in the middle of its vertical section 13213. Purlin mounting holes C 141 are provided at both ends of the purlin 14, which match the purlin mounting holes B 13214, and are connected to each other by bolts. Loosen bolt 1323 to adjust the spacing of purlin 14 along slide groove 1311 to adapt to different engineering design requirements. After adjustment, tighten bolt to fix. A connecting support 6 is installed on purlin 14 by self-tapping screws to fix the metal profiled sheet 7 to be tested.

[0022] The reaction frame 2 is an inverted portal-shaped steel structure, welded together from a portal beam 21 and two portal posts 22. Its width is the same as that of the installation platform. Multiple sets can be set according to project requirements. The upper ends of the portal posts 22 are welded and fixed to the lower surface of the longitudinal beam 13, so that the entire reaction frame 2 is suspended below the installation platform 1. The portal beam 21 and portal posts 22 can be square or rectangular. In this embodiment, a square cross-section is used. The portal posts 22 have the same specifications and dimensions as the longitudinal beam 13, and a vertical continuous sliding groove 221 is provided on the inner side.

[0023] The push beam 4 is a single, continuous channel steel with fixing holes 41 at both ends. It is connected to the gate post via a vertical T-shaped slider (similar in structure to T-shaped slider 132). This vertical T-shaped slider is embedded in the vertical adjustment groove 221 of the reaction frame gate post 22, allowing the push beam 4 to slide up and down as a whole, and to be locked at the required height by fastening bolts. A row of upper connecting holes 42 are machined on the web of the push beam 4 for connection with the force transmission beam 5.

[0024] The force transmission beams 5 are made of steel and can be channel-shaped or I-shaped. They are centrally positioned on the push beams 4, and their number and position are determined based on the type and quantity of the metal profiled sheet 7 being tested, ensuring that there is a corresponding force transmission beam 5 under each roof panel 7, and that the beams are centrally located. Each force transmission beam 5 has a lower connecting hole 51 machined into its plate. The force transmission beams 5 are connected to the corresponding upper connecting holes 42 on the push beams 4 by bolts passing through their lower connecting holes 51, and during installation, it is ensured that the force transmission beams 5 are perpendicular to the push beams 4. This vertical arrangement ensures the shortest and most efficient force transmission path.

[0025] In this embodiment, the force-applying mechanism employs multiple hydraulic cylinders 3, the number of which is determined based on the required pressure. These cylinders are symmetrically fixed on the gate beam 21 of the reaction frame 2, with their piston rods maintaining contact with the lower surface of the push beam 4. The hydraulic cylinders 3 are connected to an external control and monitoring device and, via oil pipes, to the same hydraulic pump station and control system. This enables the synchronous extension and pressure control of multiple cylinders, ensuring a uniform and stable downward thrust is applied to the push beam 4.

[0026] The testing process for this utility model is as follows: Specimen Installation: According to the design drawings, adjust and lock the spacing of the purlins 14 on the installation platform 1. Fix the connecting support 6 to the purlins 14, then install the metal profiled sheet 7 and reliably connect it to the connecting support 6 (using locking or rolling edge methods) to form a complete full-scale roof system specimen.

[0027] Device positioning: Mount the push beam 4, which has been assembled with the force transmission beam 5, into the vertical adjustment groove 221 of the reaction frame 2. Initially adjust the height of the push beam 4 so that the tops of all the force transmission beams 5 are just slightly in contact with the lower surface of the metal profiled plate 7, and then lock the vertical T-shaped slider.

[0028] Loading Test: The hydraulic control system is activated, causing all hydraulic units 3 to synchronously push the push beam 4. The push beam 4 transmits the force evenly and vertically upward to the roof test piece through the vertical force transmission beam 5, simulating a gradually increasing wind pressure load. The external data acquisition system records the pressure value of the hydraulic system (converted to load) and the roof panel deformation data measured by the displacement sensor in real time.

[0029] Data interpretation: Continuous loading continues until the specimen fails (e.g., plate buckling, connection failure, etc.) or reaches the predetermined load value. Based on the recorded load-deformation curves, analyze the ultimate bearing capacity, stiffness, and deformation performance of the roof system.

[0030] The above description is merely a preferred embodiment of this utility model. 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 protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A simple device for testing the wind load-bearing capacity of metal profiled sheets, characterized in that: The device includes an installation platform with several purlins of adjustable spacing. A reaction frame is provided below the installation platform, and a push beam that slides vertically is provided on the reaction frame. At least one force transmission beam is provided above the push beam, and a force application mechanism that contacts the lower part of the push beam is provided on the reaction frame.

2. The simplified device for testing the wind load-bearing capacity of metal profiled sheets according to claim 1, characterized in that: The installation platform includes a frame composed of longitudinal beams and transverse beams. The longitudinal beams are provided with horizontal adjustment grooves, and T-shaped sliders connected to the purlins are slidably installed in the horizontal adjustment grooves. The T-shaped sliders are provided with locking components.

3. The simplified device for testing the wind load-bearing capacity of metal profiled sheets according to claim 1, characterized in that: The reaction frame is an inverted gate-shaped structure, including a gate beam and two gate posts. The upper ends of the two gate posts are fixedly connected to the lower part of the installation platform. The inner sidewall of the gate posts is provided with a vertical adjustment groove that slides with the push beam.

4. The simplified device for testing the wind load-bearing capacity of metal profiled sheets according to claim 1, characterized in that: The push beam is a channel steel, and its web has several upper connecting holes in the middle for connecting with the force transmission beam.

5. The simplified device for testing the wind load-bearing capacity of metal profiled sheets according to claim 1 or 4, characterized in that: The force transmission beam is an I-beam or channel steel, and its lower end is provided with a lower connecting hole for connection with the push beam.

6. The simplified device for testing the wind load-bearing capacity of metal profiled sheets according to claim 5, characterized in that: The force transmission beam is set perpendicular to the push beam.

7. The simplified device for testing the wind load-bearing capacity of metal profiled sheets according to claim 1, characterized in that: The purlin is provided with a connecting support for fixing to the metal profiled sheet to be tested.

8. The simplified device for testing the wind load-bearing capacity of metal profiled sheets according to claim 1, characterized in that: The force-applying mechanism is a hydraulic instrument, which is fixedly installed on the reaction frame, with the end of its piston rod in contact with the lower surface of the push beam.

9. The simplified device for testing the wind load-bearing capacity of metal profiled sheets according to claim 8, characterized in that: Multiple hydraulic instruments are provided, arranged symmetrically / uniformly along the length of the reaction frame, and connected to the same hydraulic control system to achieve synchronous operation.

10. The simplified device for testing the wind load-bearing capacity of metal profiled sheets according to claim 1, characterized in that: The installation platform is equipped with several columns.

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