A support device that can provide lateral elastic restraint of a steel beam

Abstract

The present application relates to a kind of support device that can provide lateral elastic constraint of steel beam, it includes steel beam connecting device, elastic support device and support, steel beam connecting device is symmetrically installed horizontal support rod by clamping assembly, clamping assembly is the frame formed by a pair of rectangular clamping frame upper end setting a pair of crossbeam, four inner corners of each clamping frame are set in clamping groove, and each crossbeam is vertically connected with a horizontal support rod, and the other end of each horizontal support rod is connected with elastic support device, and elastic support device is slidably connected on support;Elastic support device includes slidable support platform, spring and sliding device, and support includes stand, pulley block and counterweight;Steel beam passes through clamping assembly and is clamped with the clamping groove of each rectangular clamping frame, steel beam is placed on pier seat, sliding device is placed on slidable support platform, and slidable support platform is installed on stand.The present application can provide lateral elastic constraint for steel beam, and reliably realize the stable bearing capacity test of steel beam with elastic support.

Description

Technical Field

[0001] This invention relates to the field of civil engineering, specifically to a support device that can provide lateral elastic constraints on steel beams during overall stability testing of steel beams. Background Technology

[0002] As the main load-bearing components in a steel structure system, the stability of steel beams directly affects the safety of the overall structure. Especially for medium- to long-span steel beams, they are more prone to overall flexural-torsional instability under vertical loads, meaning the load-bearing capacity of the steel beam is often determined by its overall stability. Therefore, research on the overall stability load-bearing capacity of steel beams is particularly important. Furthermore, in practical engineering, secondary beams are usually installed between steel beams. These secondary beams provide lateral elastic support, thereby improving the overall stability load-bearing capacity of the steel beam. How to achieve this elastic support in the overall stability test of steel beams is a key factor in determining their load-bearing capacity. Some existing lateral support devices completely restrict the lateral displacement of the steel beam. While this simplifies the constraint boundary, it excessively enhances the stiffness of the lateral support, causing the experimental model to deviate from the deformation characteristics of elastic supports in actual engineering. In addition, some technologies have lateral support devices that allow steel beams to undergo lateral displacement in the horizontal direction, but these devices have certain defects in their construction. For example, when the steel beam undergoes lateral displacement, the elastic support device cannot keep pace with the steel beam in the vertical direction, affecting the accuracy of the test results. Summary of the Invention

[0003] The purpose of this invention is to provide a support device that can provide lateral elastic constraint on steel beams. This support device can solve the problem that in existing lateral support devices, when the steel beam undergoes lateral displacement, the elastic support device cannot keep the displacement synchronized with the steel beam in the vertical direction.

[0004] The technical solution adopted by this invention to solve its technical problem is as follows: This support device that can provide lateral elastic constraint for steel beams includes a steel beam connecting device, an elastic support device, and a support. The steel beam connecting device is composed of clamping components symmetrically installed with horizontal support rods. The clamping components are a frame composed of a pair of rectangular clamping frames with a pair of horizontal beams at the top. The four inner corners of each clamping frame are set in clamping slots. Each horizontal beam is vertically connected to a horizontal support rod. The other end of each horizontal support rod is connected to the elastic support device. The elastic support device is slidably connected to the support. The elastic support device includes a slidable support platform, a spring, and a sliding device. The support includes a column with a slide rail, a pulley system, and a counterweight. The steel beam passes through the clamping components and is engaged with the clamping slots of each rectangular clamping frame. The steel beam is placed on the pier. The sliding device is placed on the slidable support platform. The slidable support platform is installed on the column. The slidable support platform is connected to the counterweight through the pulley system to balance the weight of the elastic support device. The sliding support platform includes a support platform, a side plate, a fixing sleeve, and pulleys. The support platform and the fixing sleeve are welded to the front of the side plate, the pulleys are welded to the back of the side plate, and the fixing sleeve is located inside the support platform. The sliding device includes a sliding frame. The top and bottom of the sliding frame are slidably connected to the sliding support platform through pulleys. The front panel of the sliding frame is provided with fixing holes and is fixedly connected to a horizontal support rod. The other side of the front panel is connected to the side plate through a spring.

[0005] In the above scheme, the sliding device has a back panel with holes so that the spring and the fixing sleeve can pass through to save space.

[0006] In the above scheme, the column with sliding rail is a hollow steel column, and the sliding rail is installed on the inside of the hollow steel column, so that the sliding support platform can slide up and down through it.

[0007] In the above scheme, the pulley block is installed on the column with the slide rail. The steel wire rope passes through the pulley block, with one end connected to the counterweight and the other end connected to the side plate. Its installation position allows the sliding support platform to be subjected to a vertical upward tension.

[0008] In the above scheme, one end of the horizontal support rod has a vertical connecting sleeve, and the horizontal support rod is fitted over the crossbeam through the connecting sleeve and connected to the crossbeam.

[0009] In the above scheme, the horizontal support rod is an adjustable length support rod. The two ends of the round rod are connected by an adjusting sleeve in the middle. After adjusting it to a suitable length, the sliding device and clamping assembly are connected.

[0010] In the above scheme, the distance between the bottom of the two clamping slots in the horizontal direction of the clamping frame is equal to the width of the steel beam, so as to securely clamp the steel beam.

[0011] In the above scheme, the upper end of the pier has a rectangular frame, the width of which matches the width of the steel beam, and the steel beam can pass through the rectangular frame and be held in place by the rectangular frame.

[0012] In the above scheme, the spring is inserted into the fixing sleeve and fixed to the side plate. The fixing sleeve plays a certain restraining role on the ordinary cylindrical helical compression spring.

[0013] In the above scheme, the side plate of the sliding support platform is equipped with four pulleys, and the height of the pulleys is slightly higher than the height of the slide rail, so that the sliding support platform does not directly contact the surface of the column, thus avoiding the sliding of the sliding support platform due to excessive friction. Beneficial effects

[0014] 1. This invention improves the stable bearing capacity of steel beams: This invention can be arranged in a mirror image on both sides of a steel beam. When the steel beam undergoes lateral torsional buckling to either side under external load, this device can provide lateral elastic constraint for the steel beam, thereby reliably realizing the stable bearing capacity test of a steel beam with elastic support.

[0015] 2. This invention is easy to manufacture and widely applicable: The device of this invention has a simple structure, requires little processing, has low processing cost, is easy to manufacture and install, and has wide applicability. The overall design is compact and reasonable, reducing unnecessary parts and processes; the assembly process is simple and efficient; at the same time, it can meet the needs of various application scenarios, has a high overall cost performance, and is easy to apply on a large scale.

[0016] 3. The invention features height adjustment and strong adaptability: The sliding support platform and counterweight of the device can be easily adjusted to the required height and reliably locked to maintain stability. This feature allows the device to flexibly adapt to various steel beam cross-sectional sizes and different loading conditions without redesign or modification, greatly improving the device's versatility, adaptability, and engineering practical value.

[0017] 4. The invention has a robust structure and overall stability: The clamping components and the support of the device are connected and fixed by a reliable fastening method. The overall structure is robust and reliable, which can effectively avoid relative displacement during use, thereby ensuring that the constraint system has good structural stability and ensuring that the force transmission path is clear, continuous and reliable, avoiding force transmission failure due to loosening or misalignment.

[0018] 5. The invention is free from interference in its initial state: The spring of the invention is in its natural state when it is not under load and when the beam deforms in the vertical direction. It is only subjected to force and deformation when the beam buckles laterally, thus avoiding interference from the initial additional internal force on the support result and ensuring the authenticity and effectiveness of the constraint force.

[0019] 6. The present invention provides reliable and repeatable constraints: The sliding device of the present invention is connected to the horizontal support rod at a suitable position. As the lateral buckling of the beam gradually increases, the spring is compressed but does not exceed the elastic range, ensuring that the spring deformation process is stable and controllable and the support result has good repeatability.

[0020] 7. This invention can achieve partial restriction of the horizontal lateral displacement of the steel beam, while maintaining synchronization with the vertical displacement of the steel beam during the loading process, thereby improving the accuracy of the stability bearing capacity test of the steel beam with elastic support. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0022] Figure 2 This is a three-dimensional structural schematic diagram of the steel beam connection device of the present invention.

[0023] Figure 3 This is a three-dimensional structural diagram of the elastic support device of the present invention.

[0024] Figure 4 This is a schematic diagram of the three-dimensional structure of the support of the present invention.

[0025] Figure 5 This is a three-dimensional structural diagram of the sliding support platform of the present invention.

[0026] Figure 6 This is a cross-sectional schematic diagram of the three-dimensional structure of the column with sliding rail of the present invention.

[0027] In the figure: 1 Steel beam connecting device, 2 Elastic support device, 3 Support, 4 Clamping assembly, 5 Horizontal support rod, 6 Sliding support platform, 6-1 Support platform, 6-2 Side plate, 6-3 Fixed sleeve, 6-4 Pulley, 7 Ordinary cylindrical spiral compression spring, 8 Sliding device, 9 Column with slide rail, 9-1 Steel column, 9-2 Slide rail, 10 Pulley block, 11 Counterweight, 12 Test steel beam, 13 Pier. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings: Reference Figure 1-6 This test device, which provides lateral elastic constraint on steel beams, consists of two sets arranged in mirror images of each other via steel beam connections. It includes a steel beam connecting device 1, an elastic support device 2, and a support 3. The steel beam connecting device 1 is composed of clamping assemblies 4 symmetrically mounted with horizontal support rods 5. The clamping assembly 4 is a frame consisting of a pair of rectangular clamping frames with a pair of crossbeams at their upper ends. The four inner corners of each clamping frame are positioned in clamping slots. Each crossbeam is vertically connected to a horizontal support rod 5, and the other end of each horizontal support rod 5 is connected to the elastic support device 2. The elastic support device 2 is slidably connected to the support 3. The elastic support device 2 includes... The system includes a sliding support platform 6, a spring, and a sliding device 8. The support 3 includes a column 9 with a slide rail, a pulley block 10, and a counterweight block 11. The sliding device 8 is placed on the sliding support platform 6, which is mounted on the column. The sliding support platform 6 is connected to the counterweight block 11 through the pulley block 10 to balance the weight of the elastic support device and prevent the sliding side plate from moving due to gravity. When the steel beam in the stability test undergoes lateral bending and torsional buckling to either side under external load, this device can apply lateral elastic constraints to the steel beam. It is suitable for the overall stability test study of supported steel beams.

[0029] One end of the horizontal support rod 5 has a vertical connecting sleeve. The horizontal support rod 5 is fitted over the crossbeam through the connecting sleeve and connected to the crossbeam. An adjusting sleeve is provided in the middle of the horizontal support rod 5, which can be adjusted to a suitable length to connect the sliding device 8 and the clamping assembly 4 connected to the steel beam. The test steel beam 12 passes through the clamping assembly 4 and engages with the clamping slots of each rectangular clamping frame. The distance between the bottoms of the two clamping slots in the horizontal direction of the clamping frame is equal to the width of the test steel beam, so as to securely clamp the test steel beam. The test steel beam is placed on the pier 13. The upper end of the pier 13 has a rectangular frame. The width of the rectangular frame is adapted to the width of the test steel beam, so that the test steel beam can just pass through the rectangular frame and be clamped by the rectangular frame.

[0030] The sliding support platform 6 includes a support platform 6-1, a side plate 6-2, a fixing sleeve 6-3, and a pulley 6-4. The support platform 6-1 and the fixing sleeve 6-3 are welded to the front of the side plate 6-2, and the pulley 6-4 is welded to the back of the side plate 6-2. The fixing sleeve 6-3 is located inside the support platform. The pulley block 10 is installed on the column 9 with a slide rail. The steel wire rope passes through the pulley block 10, with one end connected to the counterweight 11 and the other end connected to the side plate 6-2. Its installation position allows the sliding support platform to be subjected to a vertically upward pulling force.

[0031] The sliding device 8 includes a sliding frame. The top and bottom ends of the sliding frame are slidably connected to the sliding support platform 6 via pulleys. The front panel of the sliding frame has fixing holes and is fixedly connected to the horizontal support rod 5. The other side of the front panel is connected to the side plate via a spring. Specifically, the spring passes through a fixing sleeve and is fixed to the side plate. The fixing sleeve provides a certain constraint on the ordinary cylindrical helical compression spring. The sliding device has a back panel with holes through which the spring and fixing sleeve can pass, saving space.

[0032] The components of this invention are: a steel beam connecting device 1, an elastic support device 2, a support 3, a clamping assembly 4, a horizontal support rod 5, a sliding support platform 6, a support platform 6-1, a side plate 6-2, a fixing sleeve 6-3, a pulley 6-4, a common cylindrical helical compression spring 7, a sliding device 8, a column 9 with a slide rail, a steel column 9-1, a slide rail 9-2, a pulley block 10, a counterweight 11, a test steel beam 12, and a pier 13. The clamping assembly 4 is installed and fixed on the test steel beam 12 and connected to the horizontal support rod 5. The other end of the horizontal support rod 5 is connected to the sliding device 8 with bolts. The sliding device 8 is placed on the sliding support platform 6. The sliding support platform 6 is mounted on the column 9 with a slide rail, allowing the pulley 6-4 to slide up and down on the slide rail 9-2. The counterweight 11 is connected to the sliding support platform 6 via the pulley group 10 to balance the weight of the device. The sliding device 8 is placed on the sliding support platform 6. The side plate of the sliding support platform is equipped with four pulleys, and the height of the pulleys is slightly higher than the height of the slide rail, so that the sliding support platform does not directly contact the surface of the column, avoiding excessive friction from affecting the sliding of the sliding support platform.

[0033] The method of using this invention is as follows: A clamping assembly connected to the test steel beam is installed and fixed on the steel beam. The support is fixed to prevent displacement. The sliding support platform and counterweight are adjusted to a suitable height and kept stable. A horizontal support rod and a sliding device are connected at a suitable position, so that the ordinary cylindrical helical compression spring is in its natural state. When the beam is subjected to load and undergoes lateral torsional buckling in any direction, the horizontal support rod transmits the force to the sliding device, causing the sliding device to compress or stretch the ordinary cylindrical helical compression spring. The ordinary cylindrical helical compression spring deforms under force, generating a reaction force or tension, providing lateral elastic constraint for the steel beam, thereby improving the stable bearing capacity of the steel beam.

[0034] When the test steel beam buckles, the sliding support platform can slide up and down on the column with slide rails according to the height of its upper flange surface, thereby ensuring that the horizontal support rod always remains horizontal and that the force provided by the support rod is always effective.

Claims

1. A support device that can provide lateral elastic restraint for steel beams, characterized in that: This support device, which provides lateral elastic constraint for steel beams, includes a steel beam connecting device, an elastic support device, and a support. The steel beam connecting device consists of a clamping assembly with horizontal support rods symmetrically installed. The clamping assembly is a frame consisting of a pair of rectangular clamping frames with a pair of crossbeams at the top. The four inner corners of each clamping frame are set in clamping slots. Each crossbeam is vertically connected to a horizontal support rod. The other end of each horizontal support rod is connected to the elastic support device, which is slidably connected to the support. The elastic support device includes a sliding support platform, a spring, and a sliding device. The support includes a column with a slide rail, a pulley block, and a counterweight. A steel beam passes through a clamping assembly and engages with the clamping slots of each rectangular clamping frame. The steel beam is placed on the pier. The sliding device is placed on the sliding support platform, which is installed on the column. The sliding support platform is connected to the counterweight through the pulley block to balance the weight of the elastic support device. The sliding support platform includes a support platform, a side plate, a fixing sleeve, and pulleys. The support platform and the fixing sleeve are welded to the front of the side plate, the pulleys are welded to the back of the side plate, and the fixing sleeve is located inside the support platform. The sliding device includes a sliding frame. The top and bottom of the sliding frame are slidably connected to the sliding support platform through pulleys. The front panel of the sliding frame is provided with fixing holes and is fixedly connected to a horizontal support rod. The other side of the front panel is connected to the side plate through a spring.

2. The support device that provides lateral elastic restraint for steel beams according to claim 1, characterized in that: The sliding device has a back panel with holes through which the spring and the fixing sleeve pass.

3. The support device that provides lateral elastic restraint for steel beams according to claim 2, characterized in that: The column with the slide rail is a hollow steel column, and the slide rail is installed on the inside of the hollow steel column.

4. The support device that provides lateral elastic restraint for steel beams according to claim 3, characterized in that: The pulley block is installed on a column with a slide rail. The steel wire rope passes through the pulley block, with one end connected to the counterweight and the other end connected to the side plate, so that the sliding support platform is subjected to a vertical upward tension.

5. The support device that provides lateral elastic restraint for steel beams according to claim 4, characterized in that: One end of the horizontal support rod has a vertical connecting sleeve, and the horizontal support rod is fitted over the crossbeam through the connecting sleeve and connected to the crossbeam.

6. The support device that provides lateral elastic restraint for steel beams according to claim 5, characterized in that: The horizontal support rod is an adjustable length support rod. The two ends of the round rod are connected by an adjusting sleeve in the middle. After adjusting it to a suitable length, the sliding device and clamping assembly are connected.

7. The support device that provides lateral elastic restraint for steel beams according to claim 6, characterized in that: The distance between the bottoms of the two clamping slots in the horizontal direction of the clamping frame is equal to the width of the steel beam, thus firmly clamping the steel beam.

8. The support device that provides lateral elastic restraint for steel beams according to claim 7, characterized in that: The upper end of the pier has a rectangular frame, the width of which is matched with the width of the steel beam, and the steel beam can pass through the rectangular frame and be held in place by the rectangular frame.

9. The support device that provides lateral elastic restraint for steel beams according to claim 8, characterized in that: The spring is inserted into the fixing sleeve and fixed to the side plate.

10. The support device that provides lateral elastic restraint for steel beams according to claim 9, characterized in that: The side plate of the sliding support platform is equipped with four pulleys, and the height of the pulleys is slightly higher than the height of the slide rail.

Images