Space tube truss cumulative sliding beam structure

Abstract

The utility model discloses a kind of space pipe truss cumulative sliding beam structures, relate to building construction technical field.The structure includes space pipe truss ontology, upper wedge, lower wedge, slide, stop block group, support ball seat, connecting seat, skid shoe, thrust box and hydraulic pusher.Slide is channel steel structure, inside is equipped with stop block group, interval 350mm;Skid shoe is inserted in the clearance of stop block;Hydraulic pusher is connected by lug plate, realizes push.The utility model is optimized design, reduces frictional resistance, improves synchronous accuracy, ensures that sliding construction is safe and efficient, applicable to large-span space structure engineering.

Description

Technical Field

[0001] This utility model relates to the field of building steel structure construction technology, and in particular to a spatial truss cumulative sliding beam structure for sliding construction of large-span spatial trusses. Specifically, this utility model relates to a beam structure device that achieves cumulative sliding of truss structures through a hydraulic jacking system, suitable for the roof structure construction of large-span buildings such as stadiums, exhibition halls, and airport terminals. Background Technology

[0002] Large-span spatial truss structures are widely used in modern architecture, but their construction is challenging, especially at high altitudes or in complex environments. Traditional hoisting methods suffer from high costs, high risks, and low efficiency. Sliding construction technology, as an alternative, reduces high-altitude work and improves construction safety by assembling the truss on the ground and then sliding it to the designed position. However, existing sliding technologies still face many challenges.

[0003] Existing sliding structures typically employ simple rails and push-pull devices, but these suffer from several problems: First, high frictional resistance during the sliding process leads to high energy consumption and can easily cause structural damage. Second, insufficient synchronous control precision can cause truss misalignment or twisting, affecting construction quality. Third, the reliability and safety of the sliding device are poor, making it prone to jamming or loss of control accidents. For example, some existing technologies use ordinary steel rails and sliders, which have a high coefficient of friction and lack effective guiding and limiting mechanisms. Furthermore, while hydraulic jacking systems exist in sliding systems, they often employ a single jacking point, resulting in uneven load distribution and a tendency for localized overload.

[0004] For example, patent document CN215859168U discloses a sliding structure for a large-span arched prestressed tubular truss structure. This sliding structure includes a sliding beam and steel rails for sliding the tubular truss structure. The top surface of the sliding beam is a first sliding surface. The column base acts on the first sliding surface, and the resultant force of the vertical and lateral forces generated at the column base is perpendicular to the first sliding surface. The steel rails are fitted onto the first sliding surface. The sliding structure for a large-span arched prestressed tubular truss structure provided in this application, because the resultant force generated at the column base is perpendicular to the first sliding surface, allows the friction between the first sliding surface and the steel rails to essentially offset the lateral forces generated at the column base. Therefore, there is no need to additionally install lateral beams to resist the lateral forces generated at the column base, thus eliminating the need to increase the size of the short columns, significantly reducing the amount of reinforced concrete or steel used, and saving costs. It uses sliding beams and steel rails, but the slide structure is simple and lacks a stop block design, making it impossible to accurately control the sliding stroke. Therefore, there is an urgent need in this field for a space truss sliding beam structure that is structurally reasonable, precisely controlled, safe and reliable.

[0005] To address the aforementioned problems, this invention proposes an innovative spatial truss cumulative sliding beam structure. By optimizing components such as slideways, stops, and hydraulic jacking systems, it achieves low-friction, highly synchronous sliding construction, demonstrating significant technical advantages. Utility Model Content

[0006] To address the shortcomings of existing technologies, the purpose of this invention is to provide a spatial truss cumulative sliding beam structure to solve problems such as high frictional resistance, difficulty in synchronous control, and poor safety in existing sliding technologies. This invention, through a unique structural design, achieves stability, accuracy, and reliability in truss sliding, while simultaneously reducing material costs and construction risks.

[0007] The above-mentioned utility model objective is achieved through the following technical solution: This utility model provides a spatial tubular truss cumulative sliding beam structure, including a spatial tubular truss body, an upper wedge, and a lower wedge. A groove-shaped slide rail is fixed to the top inclined surface of the lower wedge, and the slide rail is a channel steel structure. Multiple stop block groups are evenly distributed along the length of the slide rail, with a spacing of 350mm between the stop block groups. Each stop block group includes two cuboid-shaped stops, which are parallel to each other and welded and fixed within the slide rail. A ball bearing is fixed to the bottom of the spatial tubular truss body, and a connecting... The connecting seat has its bottom fixedly connected to the upper wedge block. The bottom of the upper wedge block has two sliding shoes fixedly fixed, which are respectively inserted into the gap between the stop block and the inner wall of the slide. A thrust box is also fixed in the slide. A first thrust lug is fixed on one side of the thrust box, and a second thrust lug is fixed on the ball support. A hydraulic jack is connected between the first thrust lug and the second thrust lug. The hydraulic jack is connected to a hydraulic pump power system, a sensor detection and synchronization control system, and the rated jacking force of the hydraulic jack is 100t.

[0008] According to one embodiment of the present invention, the slide is made of 25C channel steel, and the surface flatness tolerance of the inner wall of the channel steel is controlled within ±1mm.

[0009] According to one embodiment of the present invention, the dimensions of the stop block are 30mm×30mm×150mm, the material is Q235B steel, and the weld height hf between the stop block and the slide is 10mm.

[0010] According to one embodiment of the present invention, the sliding shoe is made of wear-resistant steel and the surface is hardened. The gap between the sliding shoe and the inner wall of the slide is 2-3mm. Lubricant is applied to the contact surface before sliding.

[0011] According to one embodiment of the present invention, the rated jacking force of the hydraulic jacking device is 100t, the stroke is 500mm, the reduction factor is 0.7, and the design value of the total jacking force at the jacking point is 70t.

[0012] According to one embodiment of the present invention, the hydraulic pump source system is a modular structure, including a hydraulic pump, an oil tank and a control valve. Each jacking point is equipped with one hydraulic pump source system, and multiple pump source systems can be combined and used through a proportional valve block box.

[0013] According to one embodiment of the present invention, the sensing and synchronization control system includes a displacement sensor, a pressure sensor, and a computer control unit to achieve synchronized action, load balancing, and fault alarm.

[0014] According to one embodiment of the present invention, the slide is arranged on the axes A and Q of the truss structure, intersecting axis 16-54, and the center line of the slide coincides with the center line of the support.

[0015] According to one embodiment of the present invention, the starting positions of the installation of the stop block groups are on the same axis, the spacing error between adjacent stop block groups is less than 3mm, and the installation error of the stop blocks on both sides of the same slide is less than 1mm.

[0016] According to one embodiment of the present invention, the first thrust lug and the second thrust lug are 20mm thick, made of Q345B, and the lugs are welded by full penetration welding with a weld grade of level two.

[0017] In summary, compared with the prior art, the present invention has at least one of the following beneficial technical effects: Low-friction design: The slide rail is made of 25C channel steel with a smooth surface. Combined with the sliding shoe and stop block assembly, the coefficient of sliding friction is reduced. The gap between the sliding shoe and the slide rail is reasonably designed and can be further lubricated by applying grease, reducing resistance to below 0.15, thereby reducing energy consumption and equipment wear.

[0018] Precise synchronous control: The stop block group is spaced 350mm apart, providing accurate stroke reference. Combined with the hydraulic pusher and the electrical synchronous control system, it realizes load balancing and synchronous action of multiple push points, avoids truss offset, and the synchronization error is less than 5mm.

[0019] High safety: The thrust box and lugs are designed to transmit the jacking force, while the stop block assembly resists the reaction force, resulting in a stable structure. The hydraulic system features fault alarm and interlocking functions, reducing engineering risks. The stop block weld height is 10mm to ensure welding strength.

[0020] Modular and versatile: The hydraulic pump power system adopts a modular structure, which can be flexibly combined according to the arrangement of jacking points and the number of jacking devices, improving equipment utilization and making it suitable for different engineering needs.

[0021] High construction efficiency: The cumulative sliding method allows for segmented assembly and sliding, shortening the construction period. Standardized installation requirements, such as track level control and stop error control, improve the consistency of construction quality.

[0022] Economic efficiency: Optimized structural design reduces redundant components such as lateral beams, lowers steel consumption, and saves costs. The centerline of the sliding track coincides with the centerline of the support, reducing adjustment work.

[0023] This utility model is applicable to the construction of various large-span spatial structures, such as stadiums and industrial plants, and has good practicality. Attached Figure Description

[0024] Figure 1 This is the front view of the present invention.

[0025] Figure 2 This is a side view of the present invention.

[0026] Figure 3 This is a schematic diagram of the sliding beam structure of this utility model.

[0027] Figure 4 This is a plan view of the slide of this utility model.

[0028] Reference numerals in the attached drawings: 1. Space truss body; 2. Upper wedge block; 3. Lower wedge block; 4. Slide rail; 5. Stop block assembly; 51. Stop block; 6. Ball bearing seat; 7. Connecting seat; 8. Slipper; 9. Thrust box; 10. First thrust lug; 11. Second thrust lug; 12. Hydraulic jacking device. Detailed Implementation

[0029] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0030] In the description of this application, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0032] Example 1: Reference Figures 1-4 This utility model discloses a spatial truss cumulative sliding beam structure, comprising a spatial truss body 1, an upper wedge 2, and a lower wedge 3. A groove-shaped slide rail 4 is fixed on the top inclined surface of the lower wedge 3, and the slide rail 4 is a channel steel structure. Multiple stop block groups 5 are evenly distributed along the length of the slide rail 4, with a spacing of 350mm between the stop block groups 5. Each stop block group 5 includes two cuboid-shaped stop blocks 51, which are parallel to each other and welded and fixed inside the slide rail 4. A ball bearing seat 6 is fixed at the bottom of the spatial truss body 1, and a connecting seat 7 is fixed at the bottom of the ball bearing seat 6. The bottom of the connecting seat 7 is fixedly connected to the upper wedge block 2. Two sliding shoes 8 are fixed to the bottom of the upper wedge block 2. The two sliding shoes 8 are respectively inserted into the gap between the stop block 51 and the inner wall of the slide 4. A thrust box 9 is also fixed in the slide 4. A first thrust lug 10 is fixed on one side of the thrust box 9. A second thrust lug 11 is fixed on the ball support 6. A hydraulic pusher 12 is connected between the first thrust lug 10 and the second thrust lug 11. The hydraulic pusher 12 is connected to the hydraulic pump source system, the sensor detection and synchronous control system. The rated pushing force of the hydraulic pusher 12 is 100t.

[0033] The slide rail 4 is made of 25C channel steel, and the surface flatness tolerance of the inner wall of the channel steel is controlled within ±1mm. The dimensions of the stop block 51 are 30mm×30mm×150mm, and the material is Q235B steel. The weld height hf between the stop block 51 and the slide rail 4 is 10mm. The slide shoe 8 is made of wear-resistant steel, and the surface is hardened. The gap between the slide shoe 8 and the inner wall of the slide rail 4 is 2-3mm. Lubricant is applied to the contact surface before sliding.

[0034] The hydraulic jacking device 12 has a rated jacking force of 100t and a stroke of 500mm. A reduction factor of 0.7 is used, and the total jacking force design value for each jacking point is 70t. The hydraulic pump power system has a modular structure, including a hydraulic pump, oil tank, and control valves. Each jacking point is equipped with one hydraulic pump power system, and multiple pump power systems can be combined using a proportional valve block box. The sensing and synchronization control system includes displacement sensors, pressure sensors, and a computer control unit to achieve synchronized action, load balancing, and fault alarms.

[0035] Slide rail 4 is located on axes A and Q of the truss structure, intersecting axis 16-54, with the centerline of slide rail 4 coinciding with the centerline of the support. The starting positions for the installation of stop block assemblies 5 are on the same axis, with a spacing error of less than 3mm between adjacent stop block assemblies 5, and an installation error of less than 1mm between the stop blocks 51 on both sides of the same slide rail 4. The first thrust lug 10 and the second thrust lug 11 are 20mm thick, made of Q345B, and are welded using full penetration welding with a weld grade of Class II.

[0036] In this embodiment, the space truss body 1 is a steel pipe truss structure with a span of over 50 meters, composed of multiple trusses connected by connecting rods. The truss body 1 is prefabricated in the factory and transported to the site for assembly. Support nodes are provided at the bottom, with ball bearings 6 fixed by welding or bolts. The ball bearings 6 are spherical supports, allowing for slight rotation and accommodating deformation during sliding. The bottom of the ball bearings 6 is connected to the upper wedge block 2 via a connecting seat 7, which is made of Q345B steel plate with a thickness of 20mm to ensure strength.

[0037] The upper wedge 2 and lower wedge 3 are made of cast steel or welded steel plates. The angle of the inclined surface is designed according to the sliding requirements, usually 10-15 degrees. The lower wedge 3 is fixed to the foundation beam, and the slide rail 4 is installed on the top inclined surface. The slide rail 4 is made of 25C channel steel, and its length is determined according to the sliding stroke, such as 50 meters. The inner wall of the channel steel is smooth, and the tolerance is controlled within ±1mm to ensure smooth sliding of the sliding shoe 8. The installation of the slide rail 4 must ensure that the center line coincides with the center line of the support, and the offset is controlled within ±10mm.

[0038] The stop block groups 5 are evenly distributed along the length of the slide rail 4, spaced 350mm apart. Each stop block group 5 includes two stops 51 and 52, each measuring 30mm × 30mm × 150mm and made of Q235B steel. The stops are welded to the web of the slide rail 4 with a weld height hf = 10mm, using continuous welding to ensure a firm bond. The function of the stop block groups 5 is to limit the stroke of the slide shoe 8 and provide support for the pushing reaction force. During installation, the starting positions of all stop block groups 5 are aligned with an error of less than 1mm to avoid cumulative errors. The spacing error between adjacent stop block groups is controlled within 3mm.

[0039] Two sliding shoes 8 are fixed to the bottom of the upper wedge block 2, corresponding to the two gaps within the slide rail 4. The sliding shoes 8 are made of wear-resistant steel with a hardened surface, and the gap between them and the slide rail 4 is 2-3 mm. Before sliding, grease is applied to the contact surface to reduce the coefficient of friction to below 0.15. The design of the sliding shoes 8 ensures even force distribution and avoids single-point overload.

[0040] The thrust box 9 is welded inside the slide rail 4 and located at the rear end in the sliding direction. The first thrust lug 10 is fixed to the thrust box 9, and the second thrust lug 11 is fixed to the ball bearing 6. The lugs are 20mm thick, made of Q345B material, and connected to the hydraulic jack 12 via pins. The hydraulic jack 12 has a rated thrust of 100t and a stroke of 500mm, and adopts a hydraulic cylinder structure, supplied with oil by a hydraulic pump power system.

[0041] The hydraulic pump power system includes a hydraulic pump, oil tank, control valves, etc., and features a modular design. One pump power system is configured for each jacking point; in this embodiment, there are 12 jacking points, corresponding to 12 pump power systems. The pump power system moves with the truss and is connected to the jacking device via hoses. The electrical synchronization control system consists of a computer, sensors, and drive modules, monitoring the jacking force and displacement in real time to achieve multi-point synchronization. The system has automatic correction and alarm functions, and is controlled by operators through an interface in the central control room.

[0042] The sliding track is set at the structural axes A and Q, intersecting axis 16-54. The centerline of the track coincides with the centerline of the support, and the top surface of the ground beam is cast as a slope, consistent with the column. During installation, the surface of the sliding track beam is horizontal, the flatness difference at the splice is less than 2mm, and the centerline offset is controlled within ±10mm.

[0043] During construction, the sliding rails and stop blocks are installed first, followed by the assembly of the truss body. The hydraulic system is activated, and the jacking device gradually pushes the truss to slide, 350mm at a time (corresponding to the stop block intervals), until the design position is reached. During the sliding process, the sensor system monitors data, and the computer adjusts the jacking force to ensure synchronization. Assuming a single jacking device weighs 280t, with a friction coefficient of 0.15 and a resistance coefficient of 1.3, the required jacking force is 54.6t. The effective jacking force of the hydraulic jacking device is 70t (100t × 0.7), which meets the requirements.

[0044] The implementation principle of this utility model is as follows: This utility model discloses a spatial tubular truss cumulative sliding beam structure, relating to the field of building construction technology. The structure includes a spatial tubular truss body 1, an upper wedge block 2, a lower wedge block 3, a slide rail 4, a block assembly 5, a ball bearing seat 6, a connecting seat 7, a sliding shoe 8, a thrust box 9, and a hydraulic jacking device 12. The slide rail 4 is a channel steel structure, with 51 blocks 51 spaced 350mm apart inside; the sliding shoe 8 is inserted into the gaps between the blocks 51; the hydraulic jacking device 12 is connected via ear plates to achieve jacking. This utility model, through optimized design, reduces frictional resistance, improves synchronization accuracy, ensures safe and efficient sliding construction, and is suitable for large-span spatial structure engineering.

[0045] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A spatial tubular truss cumulative sliding beam structure, characterized in that: It includes a space tube truss body (1), an upper wedge (2) and a lower wedge (3). The lower wedge (3) has a groove-shaped slide (4) fixed on its top inclined surface. The slide (4) is a channel steel structure. The slide (4) has multiple blocks (5) evenly spaced along its length. The blocks (5) are spaced 350mm apart. Each block (5) includes two rectangular blocks (51). The two blocks (51) are parallel to each other and welded and fixed inside the slide (4). The bottom of the space truss body (1) is fixed with a ball support (6), the bottom of the ball support (6) is fixed with a connecting seat (7), the bottom of the connecting seat (7) is fixedly connected to the upper wedge (2), and the bottom of the upper wedge (2) is fixed with two sliding shoes (8). The two sliding shoes (8) are respectively inserted between the stop block (51) in the slide (4) and the inner wall of the slide (4); A thrust box (9) is also fixed inside the slide (4). A first thrust lug (10) is fixed on one side of the thrust box (9). A second thrust lug (11) is fixed on the ball support (6). A hydraulic pusher (12) is connected between the first thrust lug (10) and the second thrust lug (11). The hydraulic pusher (12) is connected to the hydraulic pump source system, the sensor detection and synchronous control system. The rated pushing force of the hydraulic pusher (12) is 100t.

2. The spatial tubular truss cumulative sliding beam structure according to claim 1, characterized in that: The slide (4) is made of 25C channel steel, and the surface flatness tolerance of the inner wall of the channel steel is controlled within ±1mm.

3. The spatial tubular truss cumulative sliding beam structure according to claim 1, characterized in that: The dimensions of the stop block (51) are 30mm×30mm×150mm, and the material is Q235B steel. The weld height hf between the stop block (51) and the slide (4) is 10mm.

4. The spatial tubular truss cumulative sliding beam structure according to claim 1, characterized in that: The slipper (8) is made of wear-resistant steel and its surface is hardened. The gap between the slipper (8) and the inner wall of the slide (4) is 2-3 mm. Lubricant is applied to the contact surface before sliding.

5. The spatial tubular truss cumulative sliding beam structure according to claim 1, characterized in that: The rated thrust of the hydraulic jacking device (12) is 100t, the stroke is 500mm, the reduction factor is 0.7, and the total thrust design value of the jacking point is 70t.

6. The spatial tubular truss cumulative sliding beam structure according to claim 1, characterized in that: The hydraulic pump source system has a modular structure, including a hydraulic pump, an oil tank, and control valves. Each jacking point is equipped with one hydraulic pump source system, and multiple pump source systems can be combined and used through a proportional valve block box.

7. A spatial tubular truss cumulative sliding beam structure according to claim 1, characterized in that: The sensing and synchronization control system includes displacement sensors, pressure sensors, and a computer control unit, enabling synchronized operation, load balancing, and fault alarms.

8. The spatial tubular truss cumulative sliding beam structure according to claim 1, characterized in that: The slide is located on the axes A and Q of the truss structure, intersecting axis 16-54, and the center line of the slide coincides with the center line of the support.

9. A spatial tubular truss cumulative sliding beam structure according to claim 1, characterized in that: The starting positions of the block group (5) are on the same axis, the spacing error between adjacent block groups (5) is less than 3mm, and the installation error of the blocks (51) on both sides of the same slide (4) is less than 1mm.

10. A spatial tubular truss cumulative sliding beam structure according to claim 1, characterized in that: The first thrust lug (10) and the second thrust lug (11) are 20mm thick and made of Q345B. The lugs are welded by full penetration welding and the weld grade is level two.

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