Container roof support connecting structure for long-span building structure and installation method thereof

Abstract

The application discloses a container top supporting connection structure for a large-span building structure and a mounting method thereof. At least one slide rail support is arranged on the container top, and the slide rail support mainly comprises a slide rail base unit, a sliding unit, a displacement limiting unit and a lubricating system. The sliding unit is slidably arranged on a concave track of the slide rail base unit, and the slide rail base unit and the sliding unit are provided with the displacement limiting unit. Each concave track comprises a concave sliding groove track and an angle piece vertical plate. The sliding unit is slidably arranged on a dovetail groove on the top surface of the concave sliding groove track, the track bottom is provided with the angle piece vertical plate on both sides, the bottom surface is provided with a rotatable angle piece connecting part torsion lock, and the bottom surface is connected with the container top through the inner side angle piece. The application successfully solves the temperature stress release problem of the large-span building structure supported on the container top, has excellent environmental adaptability and rapid assembly, and has the characteristics of high construction efficiency, controllable displacement, convenient maintenance and the like.

Description

Technical Field

[0001] This invention relates to the field of modular building structure technology, specifically a sliding connection support for a large-span building structure supported on the top of a container, particularly for prefabricated building structures with large spans that require the release of temperature stress. Background Technology

[0002] In recent years, with the rapid development of modular building technology, the application of shipping containers as supports for large-span buildings in large stadiums, temporary facilities, and other fields has increased significantly. However, existing connection technologies are insufficient to meet the special requirements of large-span buildings supported by shipping containers, mainly due to the following technical bottlenecks:

[0003] First, there is insufficient displacement adaptability: existing sliding rail supports mostly adopt a single-rail short-stroke design, which is difficult to adapt to the temperature deformation requirements of large-span structures. Studies have shown that when ΔT=50℃, the thermal displacement of a 60m span steel structure can reach 34mm / m. The cumulative deformation error of traditional supports can lead to stress concentration in the structure and even cause joint failure.

[0004] Secondly, there are defects in the constraint system: conventional sliding supports often use single corner members for force transmission, resulting in weak lateral force resistance of the structure and easy occurrence of stress, which can easily lead to cracking of the corner member welds; in some cases, the spacing between the slide rail base unit and the corner member is mismatched, resulting in discontinuous force transmission paths and making it impossible to achieve reasonable coordinated distribution of X / Y / Z forces. In addition, traditional Z-axis constraints rely on gravity self-locking, and the pull-out bearing capacity is less than 200kN, making it difficult to cope with the uplift force under strong wind conditions.

[0005] Third, frictional loss is severe: the friction coefficient μ of steel-to-steel sliding pairs is ≥0.15 (ASTM G99 standard test), resulting in an annual wear of 0.8-1.2mm, leading to problems such as difficult maintenance and short service life. Existing lubrication solutions (such as graphite coatings) suffer from problems such as rapid grease loss (cycle maintenance ≤3 months) and high-temperature failure.

[0006] Fourth, the construction efficiency is low: the existing installation process relies on on-site welding, which takes a long time to complete a single node and requires high skill from workers.

[0007] To address the aforementioned issues, the industry urgently needs a slide rail support that features long stroke, multi-directional constraint, low friction loss, and easy and quick installation. Summary of the Invention

[0008] To address the problems in related technologies, this invention provides a container roof support connection structure and its installation method for large-span building structures. Specifically, through innovative ultra-long slide rail design, double-corner joint synergistic force bearing, and composite lubrication system, it significantly improves the performance of slide rail supports for large-span building structures supported on container roofs, filling the technological gap in the field of large-span building connections for supporting containers.

[0009] This invention successfully solves the problem of temperature stress release in large-span building structures supported on container roofs. It has excellent environmental adaptability and rapid assembly capabilities, and features efficient construction, controllable displacement, and convenient maintenance.

[0010] Therefore, the specific technical solution adopted by the present invention is as follows:

[0011] I. A container top support connection structure for large-span building structures:

[0012] At least one slide rail support is installed on the top of the container. The slide rail support mainly consists of a slide rail base unit, a sliding unit, a displacement limiting unit, and a lubrication system. The slide rail base unit mainly consists of at least one concave track. The sliding unit is slidably installed on the concave track. The slide rail base unit and the slide rail base unit are provided with displacement limiting units for restricting the movement or position of the fixed sliding unit.

[0013] The term "large span" in the context of large-span building structures typically refers to a lateral span greater than or equal to 40 meters. Specific span requirements need to be further defined based on engineering design and actual usage needs. For large-span buildings, due to their large span, the structure will experience temperature changes, load fluctuations, and settlement during long-term use, leading to structural deformation and displacement. Therefore, the design must consider the impact of temperature deformation, wind loads, and earthquakes on structural stability, ensuring that the container top support connection structure can effectively adapt to these deformations and stresses, preventing excessive displacement or damage to connecting components due to temperature changes or other external forces.

[0014] Each concave track is mainly composed of a concave slide rail and corner brackets; the top surface of the concave slide rail is provided with a dovetail groove, and the sliding unit is slidably installed on the dovetail groove. A corner bracket is fixed on both sides of the bottom of the end of the concave slide rail. A rotatable corner bracket torsion lock is installed on the bottom surface of the end of the concave slide rail. The bottom surface of the end of the concave slide rail is connected to the top of the container through the inner corner bracket.

[0015] The top surface of the inner corner piece is provided with a waist-shaped groove for the torsion lock insertion of the corner piece connection part, and the surrounding side is provided with operating slots for the torsion lock adjustment and rotation of the corner piece connection part. The width of the inner corner piece is the same as the width of the concave slide rail of the concave track, and the distance between the corner piece vertical plates on both sides of the concave slide rail of the concave track is exactly equal to the width of the inner corner piece, so as to ensure its precise positioning and fit.

[0016] The concave slide rail has an X-direction limiting member on one side of its top surface to prevent the sliding unit from sliding. The displacement limiting unit is mainly composed of a corner connector twist lock, an inner corner piece, and the X-direction limiting member.

[0017] The sliding unit includes a structural end support and a convex slider connector. The convex slider connector is embedded in the dovetail groove of the concave sliding track and slides along the dovetail groove. The bottom of the structural end support is installed on the convex slider connector, and the top is used to support the large-span building structure.

[0018] The convex slider connector includes a base plate, embedded welded screws, an I-beam slider, and a self-lubricating copper-based composite material liner. The bottom of the I-beam slider is embedded in the dovetail groove through the self-lubricating copper-based composite material liner, and the top of the I-beam slider serves as the base plate and is located outside the dovetail groove. Multiple vertical embedded welded screws are fixedly installed on the top surface of the base plate. The structural end support includes a large-span building structure support and a support base plate. A through hole is opened on the support base plate, the support base plate is installed on the top surface of the base plate, and the embedded welded screws pass through the through hole of the support base plate. The large-span building structure support is installed on the top of the support base plate.

[0019] The slide rail base unit is composed of a concave track.

[0020] The slide rail base unit is mainly composed of multiple concave rails connected by rail connectors. Multiple concave rails are set on the top of the container, and two adjacent concave rails are connected along the same straight line. At the connection point, the ends of the two concave rails are connected by rail connectors, so that the two concave rails are rigidly connected.

[0021] The track connector includes a cover plate and bolts. The cover plate is wrapped around the sides and top of the ends of the two concave tracks and is fixed by bolts.

[0022] This invention sets up a three-level constraint mechanism through a displacement limiting unit, including an X-direction limiting component, a Y-direction vertical plate, and a Z-direction torsion lock; the X-direction sliding of the convex slider connector enables the release of cross-directional displacement, while the torsion lock of the corner vertical plate and corner connector constrains the overall Y and Z-direction displacement of the track; through the double corner joint collaborative force transmission design, the three-dimensional force of the sliding track is transmitted to the two container corner joints to be jointly borne.

[0023] The slide rail base unit transmits force collaboratively through two adjacent container corner fittings, wherein the force transmission path is as follows:

[0024] X-direction: (Spanning) Force passes through slider → double rail → adjacent corner piece;

[0025] Y-axis: (Length direction) Force passes through slider → corner bracket vertical plate → container side beam;

[0026] Z-direction: (Vertical) force is transmitted through the upper contact surface of the torsion lock; if the concave chute track is a uniformly distributed load when transmitting pressure, the container side beam participates in the joint force bearing.

[0027] The corner bracket vertical plate is dimensionally matched with the container corner bracket, constraining the overall Y-axis displacement of the track.

[0028] The twist lock and the bottom plate are connected by through-hole plug welding. The corner joint twist lock and the container corner piece achieve the maximum effective contact area when twisted to a relative angle of 90°. The corner joint twist lock is finally tightened using the torque-angle method to constrain the overall Z-direction displacement of the track.

[0029] II. A method for installing a container top support connection structure, the method further comprising:

[0030] Step 1: Positioning and installing the slide rail base unit:

[0031] First, a total station is used to lay out the double-track axis on the top surface of the container;

[0032] Next, snap the corner bracket vertical plate of the concave track to the side wall of the container's side beam, and insert the corner bracket connection into the hole at the top of the container corner bracket for pre-fixing;

[0033] Then, the main track assembly is carried out. The cover plate of the track connector is covered on the top of the concave slide rail of the two concave double rails. High-strength bolts are used to tighten the track in three stages: initial tightening of 30%, re-tightening of 50%, and final tightening of 100%.

[0034] Then, rubber gaskets are embedded in the gap between the container side beam and the track;

[0035] Finally, the torsion lock is tightened by using the torque-angle method to tighten the torsion lock of the corner joint.

[0036] The second step is to adjust the lubrication system:

[0037] Apply a grease layer to the track working surface. After the concave double track installation is completed, use a film thickness gauge to check the thickness of the grease layer on the track working surface. Use a high-pressure grease injection gun to add grease to areas with insufficient thickness to ensure uniform coverage.

[0038] The third step is to dynamically assemble the sliding unit:

[0039] The convex slider is slid into the dovetail groove of the concave track along the X direction, and the initial position is calibrated by a laser alignment instrument.

[0040] Then, the coordinated installation of the large-span building structure is carried out. When hoisting the main structure of the large-span building structure, an adjustable temporary support frame is set up to monitor the mid-span deflection in real time.

[0041] The support base plate and the convex slider top plate are connected by embedded welding bolts;

[0042] After the support is installed, use an electronic level to adjust the flatness;

[0043] The fourth step is to integrate the displacement limiting unit:

[0044] Place the displacement limiting fixing plate above the concave track and tighten it with bolts to apply pre-tightening force, with a double nut anti-loosening structure.

[0045] This invention achieves a technological breakthrough through the following innovative design:

[0046] 1. Concave-convex sliding rails that are linked to the building structure supports:

[0047] The base plate of the support and the top plate of the convex slider are connected by a pre-embedded screw assembly, and a double nut anti-loosening washer is provided, which has high connection efficiency. The convex slider and the structural support form a dynamic deformation coupling mechanism. When the span of the superstructure changes due to temperature load, the convex slider drives the support to slide.

[0048] 2. Extra-long sliding design:

[0049] The concave double track adopts a dual-track collaborative guidance design. The concave slide rail and the I-shaped slider form a "convex-concave nested" structure, which has a long effective sliding stroke and can achieve the variability of building span by changing the initial position of the sliding unit.

[0050] 3. Three-level constraint mechanism

[0051] X-axis limit: A displacement limiter is installed to ensure that the slider will not slide out of the slide rail base. Y-axis constraint: The corner bracket vertical plate forms a clearance fit with the container side beam. Z-axis (vertical) force is transmitted through the upper contact surface of the torsion lock; if the concave slide rail is under uniformly distributed load when transmitting pressure, the container side beam participates in the force sharing.

[0052] 4. Dual-corner component cooperative force transmission system:

[0053] The corner joint torsion lock and the container corner fitting achieve maximum effective contact area when twisted to a relative angle of 90°. The torsion lock of the corner joint is finally tightened using the torque-angle method, which constrains the overall Z-axis displacement of the track. Through the collaborative force transmission design of the double corner fittings, the three-dimensional forces (X / Y / Z) of the sliding track are transferred to the two adjacent container corner fittings to be borne by each other, which significantly improves the structural stability.

[0054] 5. Composite lubrication system:

[0055] Establish a three-in-one system of "surface modification + solid lubrication + grease lubrication": reduce the coefficient of sliding friction by pre-coating the working surface of the slide rail with lithium-based grease, plasma nitriding treatment of the working surface of the track, and setting self-lubricating copper-based composite material pads on the slider.

[0056] Compared with related technologies, the present invention has the following beneficial effects:

[0057] This invention significantly improves the performance of slide rail supports for large-span building structures supported on container roofs through innovative features such as a concave-convex slide rail linked to the support, an ultra-long slide rail design, a three-level constraint mechanism, cooperative force distribution with double corner members, and a composite lubrication system. Firstly, it enhances the ability to release temperature stress. When the large-span building structure on a container roof is subjected to temperature loads, deformation occurs in the span direction. With the assistance of the lubrication system and the concave-convex slide rail design, the support of the upper building structure can slide along the convex slider, releasing temperature stress through relative displacement with the slide rail base unit and the container, successfully solving the problem of temperature stress release for large-span building structures supported on container roofs. Secondly, it enhances the dynamic span reconstruction capability. Based on the ultra-long stroke design of the concave double rail and the initial position adjustment, dynamic reconstruction of the large-span building structure can be achieved. Thirdly, it enables cooperative force distribution with double corner members. Through the ultra-long slide rail and its three-level limiting system (X-direction limiting member + Y-direction vertical plate + Z-direction torsion lock), cooperative force distribution with double corner members is achieved, improving the structure's lateral resistance and addressing weaknesses in pull-out resistance. Fourth, it features low friction characteristics. Through the synergistic effect of plasma nitriding tracks, self-lubricating pads, and lithium-based grease films, the sliding friction coefficient is reduced compared to traditional steel-to-steel contact. Fifth, it achieves breakthroughs in construction efficiency. The modular design reduces the installation time per node, and the torque-angle final tightening process improves assembly efficiency and reduces the requirements for ground flatness. Attached Figure Description

[0058] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0059] Figure 1 This is an overall perspective view of a slide rail support for a large-span building structure supported on the top of a container, according to an embodiment of the present invention, showing the spatial relationship between the double-rail base, the sliding unit, and the limiting component.

[0060] Figure 2 This is an exploded view of a slide rail base unit for a slide rail support for a large-span building structure supported on the top of a container, according to an embodiment of the present invention. The exploded view shows the concave double rail, the track connector 4, and the twist lock assembly relationship.

[0061] Figure 3 This is a detailed structural diagram of a sliding unit for a slide rail support for a large-span building structure supported on the top of a container, according to an embodiment of the present invention. It shows the connection structure of the large-span building structure support 601, the embedded welded screw 702, and the I-beam slider 703.

[0062] Figure 4This is a cross-sectional view of a displacement limiting unit for a slide rail support for a large-span building structure supported on the top of a container, according to an embodiment of the present invention, showing the constraint mechanism in the X, Y, and Z directions.

[0063] Figure 5 This is a schematic diagram of the lubrication system for a slide rail support for a large-span building structure supported on the top of a container, according to an embodiment of the present invention.

[0064] Figure 6 This is a flowchart illustrating the installation process of a slide rail support for a large-span building structure supported on the top of a container, according to an embodiment of the present invention.

[0065] In the picture:

[0066] 2. Inner concave track; 201. First concave slide rail; 202. First corner piece vertical plate; 203. First corner piece connecting part torsion lock; 204. First inner corner piece;

[0067] 3. Outer concave track; 301. Second concave slide rail; 302. Second corner piece vertical plate; 303. Second corner piece connecting part twist lock; 304. Second inner corner piece;

[0068] 4. Track connectors; 401 cover plate; 402 bolts;

[0069] 6. Structural end supports; 601. Supports for large-span building structures; 602. Support base plate;

[0070] 7. Convex slider connector; 701. Base plate; 702. Embedded welded screw; 703. I-beam slider; 704. Self-lubricating copper-based composite material gasket;

[0071] 9. X-direction limiting component;

[0072] 10. Gaskets. Detailed Implementation

[0073] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0074] like Figure 1 As shown, at least one slide rail support is installed on the top of the container.

[0075] The slide rail support mainly consists of a slide rail base unit 1, a sliding unit, a displacement limiting unit, and a lubrication system. The slide rail base unit mainly consists of at least one inner concave rail 2 or an outer concave rail 3. The sliding unit is slidably mounted on the inner concave rail 2 or the outer concave rail 3. The slide rail base unit and the slide rail base unit are provided with displacement limiting units for restricting the movement or position of the fixed sliding unit.

[0076] like Figure 1 As shown, each inner concave track 2 or outer concave track 3 is mainly composed of a first concave slide rail 201 or a first concave slide rail 301, a first corner piece vertical plate 202 or a second corner piece vertical plate 302; the top surface of the first concave slide rail 201 and the first concave slide rail 301 is provided with a dovetail groove, and the sliding unit is slidably installed on the dovetail groove. A first corner piece vertical plate 202 or a second corner piece vertical plate 302 is fixed on both sides of the bottom of the ends of the first concave slide rail 201 and the first concave slide rail 301. 2. The first corner bracket vertical plate 202 or the second corner bracket vertical plate 302 is fixed to the bottom side of the first concave slide rail 201 or the first concave slide rail 301 by welding. The bottom surface of the end of the first concave slide rail 201 or the first concave slide rail 301 is equipped with a rotatable first corner bracket connecting part twist lock 203 or second corner bracket connecting part twist lock 303. The bottom surface of the end of the first concave slide rail 201 and the first concave slide rail 301 is connected to the top of the container through the first inner corner bracket 204 or the second inner corner bracket 304.

[0077] The top surface of the first inner corner piece 204 or the second inner corner piece 304 is provided with a waist-shaped groove for inserting the first corner piece connecting part twist lock 203 or the second corner piece connecting part twist lock 303. The surrounding side is provided with operating slots for adjusting and rotating the first corner piece connecting part twist lock 203 or the second corner piece connecting part twist lock 303. The operating slots are used for tools or hands to reach in and rotate the first corner piece connecting part twist lock 203 or the second corner piece connecting part twist lock 303. The length of the first corner piece connecting part twist lock 203 or the second corner piece connecting part twist lock 303 is less than the length of the waist-shaped groove, but greater than the width of the waist-shaped groove. The first corner piece connecting part twist lock 203 or the second corner piece connecting part twist lock 303 is connected to the slide rail by through-hole plug welding or embedded welding.

[0078] The width of the first inner corner piece 204 or the second inner corner piece 304 is the same as the width of the first concave groove track 201 and the first concave groove track 301 of the concave tracks 2 and 3, and the distance between the first corner piece vertical plates 202 or the second corner piece vertical plates 302 on both sides of the first concave groove track 201 or the first concave groove track 301 of the inner concave track 2 and the outer concave track 3 is exactly equal to the width of the first inner corner piece 204 or the second inner corner piece 304.

[0079] The container corner fitting is used as the first inner corner fitting 204 or the second inner corner fitting 304, and both ends of the inner concave track 2 and the outer concave track 3 are connected to the container corner fitting on the top of the container.

[0080] The first concave slide rail 201 or the first concave slide rail 301 has an X-direction limiting member 9 on one side of its top surface to prevent the sliding unit from sliding. The displacement limiting unit is mainly composed of the first corner member connecting part twist lock 203 or the second corner member connecting part twist lock 303, the first inner corner member 204 or the second inner corner member 304 and the X-direction limiting member 9.

[0081] In specific implementation, the X-direction limiting component 9 adopts a displacement limiting fixing plate 901. The displacement limiting fixing plate 901 is fixed to the top surface of one end of the first concave slide rail 201 or the first concave slide rail 301 by bolts and covers the dovetail groove, so that the sliding unit is blocked when it passes through.

[0082] The displacement limiting fixing plate 901 is placed above the inner concave track to ensure that the slider will not slide out of the slide rail base.

[0083] The sliding unit includes a structural end support 6 and a convex slider connector 7. The convex slider connector 7 is embedded in the dovetail groove of the first concave slide rail 201 or the first concave slide rail 301 and slides along the dovetail groove. The bottom of the structural end support 6 is installed on the convex slider connector 7, and the top is used to support the large-span building structure.

[0084] like Figure 3 As shown, the convex slider connector 7 includes a base plate 701, embedded welding screws 702, an I-beam slider 703, and a self-lubricating copper-based composite material liner 704. The bottom of the I-beam slider 703 is embedded in the dovetail groove through the self-lubricating copper-based composite material liner 704. The top of the I-beam slider 703 serves as the base plate 701 and is located outside the dovetail groove and in contact with the top surface of the groove. Multiple vertical embedded welding screws 702 are fixedly installed on the top surface of the base plate 701. The lateral displacement is released by sliding the convex slider connector 7X in the X direction.

[0085] The structural end support 6 includes a large-span building structure support 601 and a support base plate 602. The support base plate 602 has a through hole and is mounted on the top surface of the base plate 701. Embedded bolts 702 pass through the through hole in the support base plate 602. The large-span building structure support 601 is mounted on top of the support base plate 602 and is used to support the main body of the large-span building structure, ensuring the stability and uniform stress distribution of the entire structure. Specifically, the large-span building structure support 601, through its connection with the support base plate 602, transfers the weight of the structure and external loads to the foundation. This support design effectively distributes the structural stress and provides appropriate elasticity and adjustment capacity in response to temperature changes, earthquakes, or other dynamic loads.

[0086] On the top of the container, the slide rail base unit consists of only one inner concave rail 2 or an outer concave rail 3.

[0087] On the top of the container, the slide rail base unit mainly consists of multiple concave rails 2 and 3 connected by rail connectors 4. The rail connectors 4 restrict the mutual displacement between the two rails, forming concave double rails. Multiple concave rails 2 and 3 are installed on the top of the container, and the concave sliding rails 201 and 301 of adjacent concave rails 2 and 3 are rigidly connected by rail connectors 4. Specifically, the concave sliding rails 201 and 301 of adjacent concave rails 2 and 3 are connected along the same straight line, and the ends of the concave sliding rails 201 and 301 of the two concave rails 2 and 3 are connected by rail connectors 4 at the connection point, so that the concave sliding rails 201 and 301 of the two concave rails 2 and 3 are rigidly connected.

[0088] A gasket 10 is installed between the rail connector 4 and the container. The gasket, installed on the side of the rail connector, fills the gap between the container side beam and the rail to achieve fixed positioning.

[0089] The concave double track can change the internal space span of the upper large-span building structure by changing the initial position of the sliding unit, thus realizing the variability of the building span.

[0090] The track connector 4 includes a cover plate 401 and bolts 402. The cover plate 401 is wrapped around the ends of the two concave tracks 2 and 3 on both sides and the top surface and is fixed by bolts 402.

[0091] In practice, two concave tracks can be set up:

[0092] The slide rail base unit consists of an inner concave track 2, an outer concave track 3, and track connectors 4. The inner concave track 2 includes a concave slide groove track 201, a corner bracket vertical plate 202, and a corner bracket connecting twist lock 203. The corner bracket connecting part is fixed to the slide groove track by through-hole plug welding or embedded welding. The outer concave track 3 has a symmetrical structure to the inner track. The track connectors 4 are installed around the top of the two tracks and are fixed by side bolts 402 to form an overall frame, restricting the mutual displacement between the two tracks.

[0093] The sliding unit consists of a structural end support 6 and a convex slider connector 7. The structural end support 6 consists of a large-span building structure support 601 and a support base plate 602; the convex slider connector 7 includes a base plate 701, a welded bolt 702, an I-beam slider 703, and a self-lubricating copper-based composite material gasket 704. The welded bolt 702 is rigidly connected to the support base plate 602, so that the two together form a convex slider.

[0094] The displacement limiting unit consists of an X-direction limiting component 9, a Y-direction constraint vertical plate 202 / 302, a Z-direction pull-out torsion lock 203 / 303, and a gasket 10. The displacement limiting fixing plate is placed above the inner concave track 2 and fixed with bolts to ensure that the slider will not slide out of the track base. Gaskets 10 are installed on the side of the track connector 4 to fill the gap between the container side beam and the track, achieving fixed limiting.

[0095] The lubrication system 11 combines plasma nitriding, copper-based self-lubricating gaskets, and high-pressure grease injection technology to produce a synergistic effect. The working surface of the slide rail is pre-coated with lithium-based grease; the working surface of the concave slide rail 201 / 301 is treated with plasma nitriding; the I-beam slider 703 of the convex slider connector 7 is equipped with a self-lubricating copper-based composite material gasket 704.

[0096] The specific installation method of this invention is as follows:

[0097] S01 Slide Rail Base Unit Positioning and Installation: Use a total station to position the unit on the top surface of the container; snap the corner bracket vertical plate to the container side beam; pre-fix the corner bracket connector by inserting the torsion lock into the corner bracket hole of the container. The track connector covers the top of the double rails and is tightened in three stages with high-strength bolts; embed weather-resistant rubber gaskets in the gap between the side beam and the track; finally tighten the corner bracket connector torsion lock using the torque-angle method.

[0098] S02 Lubrication system debugging: Use a film thickness gauge to check the grease layer thickness on the working surface of the slide rail; use a high-pressure grease gun to add grease to areas with insufficient thickness, and pay attention to flow control.

[0099] S03 Sliding Unit Assembly: Use guide fixtures to slide the convex slider into the base along the X direction; use a laser alignment instrument to calibrate the initial position of the slider. During the main structure hoisting, set up temporary support frames, paying attention to deflection control; connect the base plate of the support to the top plate of the convex slider using screws. First complete the installation of one side of the support, using an electronic level to adjust the flatness; during the installation of the symmetrical side, monitor the parallelism of the double rails in real time.

[0100] S04 Displacement Limiting Unit Installation: Place the displacement limiting fixing plate on top of the inner concave track and fix it with bolts; apply preload to the bolts and use double nuts to prevent loosening.

[0101] like Figure 6 As shown, the installation method of the embodiment provided by the present invention is as follows:

[0102] Please refer to the following: Figure 2 The first step is to position and install the slide rail base unit. A total station is used to lay out the double-rail axis on the top surface of the container. The corner bracket vertical plate 202 of the inner concave rail 2 is snapped into the side wall of the container side beam, and the corner bracket connecting twist lock 203 is inserted into the corner bracket hole of the container for pre-fixation. Then, the main rail body is assembled. The cover plate 401 of the rail connector 4 is covered on the top of the double rails, and high-strength bolts 402 are tightened in three stages: initial tightening 30% → secondary tightening 50% → final tightening 100%. Rubber gaskets 10 are embedded in the gap between the container side beam and the rail. Finally, the twist lock is tightened, and the corner bracket connecting twist lock 203 is tightened using the torque-angle method.

[0103] Please refer to the following: Figure 5 The second step is to debug the lubrication system. This invention achieves a significantly lower sliding friction coefficient (μ=0.15) compared to traditional steel-to-steel contact through the synergistic effect of plasma-nitrided rails, self-lubricating gaskets, and lithium-based grease film. To ensure low friction characteristics, after rail installation, a thickness gauge is used to check the grease layer thickness on the working surface of the rail. Areas with insufficient thickness are replenished with grease using a high-pressure grease gun at a pressure of 5±0.5MPa to ensure uniform coverage.

[0104] Please refer to the following: Figure 3 The third step involves the dynamic assembly of the sliding unit. The convex slider is slid into the base along the X-axis, and its initial position is calibrated using a laser alignment instrument. Then, the large-span building structure is installed collaboratively. During the hoisting of the main structure, adjustable temporary support frames are set up, and the mid-span deflection is monitored in real time, with a control value ≤ L / 1500. The support base plate 602 and the convex slider base plate 701 are connected by embedded welded bolts 702, and the double-nut anti-loosening pre-tightening force is applied at 0.7 times the bolt yield strength. After the single-sided support is installed, an electronic level is used to adjust the flatness, with a resolution of 0.01 mm / m. During the installation of the symmetrical side, a laser tracker is used to monitor the parallelism of the double rails in real time.

[0105] Please refer to the following: Figure 4The fourth step is to integrate the displacement limiting unit. Place the displacement limiting fixing plate above the inner concave track 2, apply pre-tightening force with bolts, and use a double nut anti-loosening structure.

[0106] The above installation method has the following beneficial effects:

[0107] This invention significantly improves the performance of slide rail supports for large-span building structures supported on container roofs through innovative features such as a concave-convex slide rail 1 / 5 linked to the support, an ultra-long slide rail design, a three-level constraint mechanism, double-corner component cooperative force distribution, and a composite lubrication system 11. Firstly, it enhances the ability to release temperature stress. When the large-span building structure on a container roof is subjected to temperature loads, deformation occurs in the span direction. With the assistance of the lubrication system and the concave-convex slide rail 1 / 5 design, the support of the upper building structure can slide along the convex slider, releasing temperature stress through relative displacement with the slide rail base unit and the container, successfully solving the problem of temperature stress release for large-span building structures supported on container roofs. Secondly, it enhances the dynamic span reconstruction capability. Based on the ultra-long stroke design of the concave double rail 2 / 3 and the initial position adjustment, dynamic reconstruction of the large-span building structure can be achieved. Third, the double-corner components work together to share the load. This is achieved through an ultra-long sliding track and its three-level limiting system [X-direction limiting component 9 + Y-direction vertical plates 202 / 302 + Z-direction torsion lock 203 / 303], improving the structure's lateral resistance and reducing weaknesses in pull-out resistance. Fourth, low friction characteristics are achieved through the synergistic effect of plasma-nitrided tracks, self-lubricating copper-based composite material lining 704, and lithium-based grease film, significantly reducing the sliding friction coefficient compared to traditional steel-to-steel contact, to μ=0.15. Fifth, construction efficiency is significantly improved. The modular design reduces the installation time per node, and the torque-angle final tightening process increases assembly efficiency and reduces the requirements for ground flatness.

[0108] Therefore, this invention successfully solves the problem of temperature stress accumulation and release in large-span building structures supported on container roofs. It has excellent environmental adaptability and rapid assembly capabilities, and features efficient construction, controllable displacement, and convenient maintenance.

Claims

1. A container top support connection structure for large-span building structures, characterized in that: At least one slide rail support is provided on the top of the container. The slide rail support mainly consists of a slide rail base unit, a sliding unit, a displacement limiting unit and a lubrication system. The slide rail base unit mainly consists of at least one concave rail. The sliding unit is slidably installed on the concave rail. The slide rail base unit is provided with a displacement limiting unit for limiting the movement or position of the fixed sliding unit. Each concave track is mainly composed of a concave slide rail and corner brackets; the top surface of the concave slide rail is provided with a dovetail groove, and the sliding unit is slidably installed on the dovetail groove. A corner bracket is fixed on both sides of the bottom of the end of the concave slide rail. A rotatable corner bracket torsion lock is installed on the bottom surface of the end of the concave slide rail. The bottom surface of the end of the concave slide rail is connected to the top of the container through the inner corner bracket.

2. The container top support connection structure for large-span building structures according to claim 1, characterized in that: The top surface of the inner corner piece is provided with a waist-shaped groove for the corner piece connection part torsion lock insertion, and the surrounding side is provided with operating slot holes for the corner piece connection part torsion lock adjustment and rotation. The width of the inner corner piece is the same as the width of the concave slide rail of the concave track, and the distance between the corner piece vertical plates on both sides of the concave slide rail of the concave track is exactly equal to the width of the inner corner piece.

3. The container top support connection structure for large-span building structures according to claim 2, characterized in that: The concave slide track has an X-direction limiting member (9) on one side of its top surface to prevent the sliding unit from sliding. The displacement limiting unit is mainly composed of a corner connector twist lock, an inner corner piece, and the X-direction limiting member (9).

4. The container top support connection structure for large-span building structures according to claim 1, characterized in that: The sliding unit includes a structural end support (6) and a convex slider connector (7). The convex slider connector (7) is embedded in the dovetail groove of the concave slide rail and slides along the dovetail groove. The bottom of the structural end support (6) is installed on the convex slider connector (7), and the top is used to support the large-span building structure.

5. A container top support connection structure for large-span building structures according to claim 4, characterized in that: The convex slider connector (7) includes a base plate (701), embedded screws (702), an I-beam slider (703), and a self-lubricating copper-based composite material liner (704). The bottom of the I-beam slider (703) is embedded in the dovetail groove through the self-lubricating copper-based composite material liner (704). The top of the I-beam slider (703) serves as the base plate (701) and is located outside the dovetail groove. Multiple vertical embedded screws (702) are fixedly installed on the top surface of the base plate (701). The structural end support (6) includes a large-span building structure support (601) and a support base plate (602); the support base plate (602) has a through hole, the support base plate (602) is installed on the top surface of the base plate (701), and the embedded welded screw (702) passes through the through hole of the support base plate (602), and the large-span building structure support (601) is installed on the top of the support base plate (602).

6. A container top support connection structure for large-span building structures according to claim 1, characterized in that: The slide rail base unit is composed of a concave track.

7. A container top support connection structure for large-span building structures according to claim 1, characterized in that: The slide rail base unit is mainly composed of multiple concave rails connected by rail connectors (4). Multiple concave rails are set on the top of the container. Two adjacent concave rails are connected along the same straight line. The ends of the two concave rails are connected by rail connectors (4) at the connection point, so that the two concave rails are rigidly connected.

8. A container top support connection structure for large-span building structures according to claim 7, characterized in that: The track connector (4) includes a cover plate (401) and bolts (402). The cover plate (401) is wrapped around the ends of the two concave tracks on both sides and the top surface and is fixed by bolts (402).

9. An installation method applied to the container top support connection structure according to any one of claims 1-8, characterized in that: The method includes: Step 1: Positioning and installing the slide rail base unit: First, a total station is used to lay out the double-track axis on the top surface of the container; Next, the corner bracket vertical plate of the concave track is snapped into the side wall of the container's side beam, and the corner bracket connecting twist lock (203) is inserted into the hole at the top of the container corner bracket for pre-fixing; Then the main body of the track is assembled. The cover plate (401) of the track connector (4) is wrapped around the top of the concave groove track of the two concave tracks. High-strength bolts (402) are used to tighten the track in three stages: initial tightening 30% → re-tightening 50% → final tightening 100%. Then, rubber pads (10) are embedded in the gap between the container side beam and the track. Finally, the torque-angle method was used to tighten the torsion lock (203) of the corner connector. The second step is to adjust the lubrication system: Apply a grease layer to the track working surface. After installation, use a film thickness gauge to check the thickness of the grease layer on the track working surface. Use a high-pressure grease gun to add grease to areas with insufficient thickness to ensure uniform coverage. The third step is to dynamically assemble the sliding unit: The convex slider is slid into the dovetail groove of the concave track along the X direction, and the initial position is calibrated by a laser alignment instrument. Then, the coordinated installation of the large-span building structure is carried out. When hoisting the main structure of the large-span building structure, an adjustable temporary support frame is set up to monitor the mid-span deflection in real time. The support base plate (602) and the convex slider base plate (701) are connected by embedded welding screws (702). After the support is installed, use an electronic level to adjust the flatness; The fourth step is to integrate the displacement limiting unit: Place the displacement limiting fixing plate above the inner concave track (2), apply pre-tightening force with the second bolt, and use a double nut anti-loosening structure.

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