Container top support connecting structure for large-span building structure and mounting method of container top support connecting structure

Abstract

The invention discloses a container top bearing connecting structure for a large-span building structure and a mounting method of the container top bearing connecting structure. At least one sliding rail support is arranged on the top of the container, the sliding rail support is mainly composed of a sliding rail base unit, a sliding unit, a displacement limiting unit and a lubricating system, the sliding unit is installed on a concave rail of the sliding rail base unit in a sliding mode, and the displacement limiting unit is arranged on the sliding rail base unit and the sliding rail base unit. Each concave rail comprises a concave chute rail and a corner fitting vertical plate; the sliding unit is installed on a dovetail groove in the top face of the concave sliding groove rail in a sliding mode, corner fitting vertical plates are arranged on the two sides of the bottom of the rail, a rotatable corner fitting connecting part twist lock is installed on the bottom face, and the bottom face is connected with the top of the container through an inner side corner fitting. The problem of temperature stress release of a large-span building structure supported on the top of the container is successfully solved, the environment adaptability and the rapid assembling performance are excellent, and the beneficial effects of being efficient in construction, controllable in displacement, convenient and fast to maintain and the like are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of modular building structures, and specifically to a sliding connection support for a large-span building structure supported on the top of a container, especially for prefabricated building structures with a large span and the need to release temperature stress. Background Art

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

[0003] First, the displacement adaptability is insufficient: Most existing slide rail supports adopt a single-rail short-stroke design, which is difficult to adapt to the temperature deformation requirements of large-span structures. Research shows that when ΔT = 50 °C, the thermal displacement of a 60m-span steel structure can reach 34mm / m, and the cumulative deformation error of traditional supports will cause stress concentration in the structure and even lead to node failure.

[0004] Second, there are defects in the constraint system: Conventional sliding supports mostly use single-angle members to transmit force, resulting in weak lateral force resistance of the structure and easy stress, which is prone to weld cracking of the angle members; the distance between some slide rail base units and angle members does not match, resulting in discontinuous force transmission paths and unable to achieve reasonable coordinated distribution of X / Y / Z three-directional forces. In addition, traditional Z-direction constraints rely on gravity self-locking, and the uplift bearing capacity is less than 200kN, making it difficult to cope with the uplift force under strong wind conditions.

[0005] Third, the friction loss is serious: The friction coefficient of the steel-steel sliding pair μ≥0.15 (tested according to ASTM G99 standard), resulting in an annual wear of 0.8 - 1.2mm, and there are problems such as difficult maintenance and short service life. Existing lubrication solutions (such as graphite coatings) have problems such as fast grease loss (periodic 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 for single-node construction and has high requirements for workers' skills.

[0007] In view of the above problems, the industry urgently needs a slide rail support with long stroke, multi-directional constraints, low friction loss and easy rapid installation. Summary of the Invention

[0008] In view of the problems in the related art, the present invention is a container top support connection structure and its installation method for a large-span building structure. Specifically, through innovative ultra-long slide rail design, double-angle member coordinated force and composite lubrication system, etc., the performance of the slide rail support for a large-span building structure supported on the top of a container is significantly improved, filling the technical gap in the field of large-span building connections supported by containers.

[0009] The present invention has successfully solved the problem of temperature stress release of large-span building structures supported on the top of containers, and has excellent environmental adaptability and rapid assembly performance, and has the characteristics of high construction efficiency, 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 arranged on the top of the container. The slide rail support is mainly composed of a slide rail base unit, a sliding unit, a displacement limiting unit, and a lubrication system. The slide rail base unit is mainly composed of at least one concave track. The sliding unit is slidably installed on the concave track, and a displacement limiting unit for restricting the movement or position of the fixed sliding unit is arranged on the slide rail base unit and the slide rail base unit.

[0013] The large span of the large-span building structure generally means that the lateral span of the building is greater than or equal to 40 meters. The specific span requirements need to be further defined according to the engineering design and actual use requirements. For large-span buildings, due to the large span, the building structure will experience the effects of temperature changes, load fluctuations, and settlement during long-term use, resulting in the deformation and displacement of the structure. Therefore, when designing, it is necessary to consider the influence of factors such as temperature deformation, wind load, and earthquake on the structural stability, and ensure that the container top support connection structure can effectively adapt to these deformations and stresses, and prevent excessive displacement or damage of the connection components due to temperature changes or other external forces.

[0014] Each of the concave tracks is mainly composed of a concave chute track and an angle member vertical plate; a dovetail groove is formed on the top surface of the concave chute track, and the sliding unit is slidably installed on the dovetail groove. A corner member vertical plate is fixed on both sides of the bottom of the end of the concave chute track. A rotatable corner member connection part twist lock is installed on the bottom surface of the end of the concave chute track, and the bottom surface of the end of the concave chute track is connected to the top of the container through an inner corner member.

[0015] A waist-shaped groove for inserting the corner member connection part twist lock is arranged on the top surface of the inner corner member, and an operation slot hole for adjusting and rotating the corner member connection part twist lock is arranged on the surrounding side surface. The width of the inner corner member is the same as the width of the concave chute track of the concave track, and the distance between the corner member vertical plates on both sides of the concave chute track of the concave track is exactly equal to the width of the inner corner member to ensure its precise positioning and matching.

[0016] An X-direction limiting member for blocking the sliding of the sliding unit is arranged on one side of the top surface of the concave chute track. The corner member connection part twist lock, the inner corner member, and the X-direction limiting member constitute the displacement limiting unit.

[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 chute track and slides along the dovetail groove. The bottom of the structural end support is mounted on the convex slider connector, and the top is used to support the long-span building structure.

[0018] The convex slider connector includes a bottom plate, a stud welded to the bottom plate, an I-beam slider, and a self-lubricating copper-based composite liner. The bottom of the I-beam slider is embedded in the dovetail groove through the self-lubricating copper-based composite liner. The top of the I-beam slider serves as the bottom plate and is located outside the dovetail groove. A plurality of vertical stud welded to the bottom plate are fixedly arranged on the top surface of the bottom plate. The structural end support includes a long-span building structure support and a support bottom plate. Through holes are provided on the support bottom plate. The support bottom plate is mounted on the top surface of the bottom plate, and the stud welded to the bottom plate passes through the through holes of the support bottom plate. The long-span building structure support is mounted on the top of the support bottom plate.

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

[0020] The slide rail base unit is mainly composed of a plurality of concave tracks connected by track connectors. A plurality of concave tracks are arranged on the top of the container. Adjacent two concave tracks are arranged in connection along the same straight line. At the connection, the ends of the two concave tracks are respectively connected by track connectors, so that the two concave tracks are rigidly connected.

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

[0022] The present invention sets a three-level constraint mechanism through the displacement limiting unit, including an X-direction limiting member + a Y-direction vertical plate + a Z-direction twist lock. The X-direction sliding of the convex slider connector realizes the release of the cross-direction displacement. The overall Y and Z-direction displacements of the track are restricted by the vertical plate of the corner fitting and the twist lock of the corner fitting connection part. Through the design of the cooperative force transmission of the double corner fittings, the three-direction forces of the sliding track are transmitted to two container corner fittings to jointly bear.

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

[0024] X direction: (Cross direction) force passes through the slider → double track → adjacent corner fitting;

[0025] Y direction: (Length direction) force passes through the slider → vertical plate of the corner fitting → side beam of the container;

[0026] Z direction: (Vertical direction) force is transmitted through the contact surface of the upper part of the twist lock; when transmitting pressure, if the concave chute track is uniformly loaded, the side beam of the container participates in the cooperative force bearing.

[0027] The vertical plate of the corner fitting matches the scale of the container corner fitting and restricts the overall Y-direction displacement of the track.

[0028] The twist lock and the bottom plate are connected by plug welding through holes. When the twist lock at the corner fitting connection part and the container corner fitting are twisted to a relative angle of 90°, the effective contact area is maximized. The torque-rotation angle method is used to finally tighten the twist lock at the corner fitting connection part to restrict the overall Z-direction displacement of the track.

[0029] II. An installation method for a container top support connection structure, which more specifically includes:

[0030] The first step is the positioning and installation of the slide rail base unit:

[0031] First, use a total station to loft the double-track axis on the top surface of the container;

[0032] Then, the vertical plate of the corner fitting of the concave track is clamped to the side wall of the side beam of the container, and the twist lock at the corner fitting connection part is inserted into the hole at the top of the container corner fitting for pre-fixing;

[0033] Then, the track main body is assembled. The cover plate of the track connecting piece is covered on the top of the concave double track of the two concave tracks. High-strength bolts are tightened in three steps: initial tightening 30% → re-tightening 50% → final tightening 100%.

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

[0035] Finally, the twist lock is finally fixed, and the torque-rotation angle method is used to finally tighten the twist lock at the corner fitting connection part;

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

[0037] Apply a grease layer on the working surface of the track. After the installation of the concave double track is completed, use a film thickness gauge to detect the thickness of the grease layer on the working surface of the track. The areas with insufficient local thickness are replenished with grease using a high-pressure grease gun to ensure uniform coverage;

[0038] The third step is the dynamic assembly of the sliding unit:

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

[0040] Then, the collaborative installation of the large-span building structure is carried out. When the main structure part of the large-span building structure is hoisted, an adjustable temporary support frame is set up, and the mid-span deflection is monitored in real time;

[0041] Connect the support base plate and the top plate of the convex slider through fillet welding of the screw;

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

[0043] The fourth step is the integration of the displacement limit unit:

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

[0045] The present invention achieves a technological breakthrough through the following innovative designs:

[0046] 1. Concave-convex sliding rails linked with building structure supports:

[0047] Adopt an embedded screw component to connect the support base plate and the top plate of the convex slider, and equip with double-nut anti-loosening washers, with high connection efficiency; the convex slider and the structure support form a dynamic deformation coupling mechanism. When the span of the upper structure changes due to temperature load, it drives the convex slider to drive the support to slide.

[0048] 2. Ultra-long sliding design:

[0049] The concave double rail adopts a double-rail collaborative guiding design. The concave chute track and the I-shaped slider form a "concave-convex nesting" structure, with a relatively long effective sliding stroke, and the variability of the building span can be achieved by changing the initial position of the sliding unit.

[0050] 3. Three-level constraint mechanism

[0051] X-direction limit: Set displacement limit parts to ensure that the slider does not slide out of the sliding rail base. Y-direction constraint: The vertical plate of the angle piece and the side beam of the container form a clearance fit. The Z-direction (vertical) force is transmitted through the upper contact surface of the twist lock; when transmitting pressure, the concave chute track is a uniformly distributed load, and the side beam of the container participates in the collaborative force.

[0052] 4. Double-angle piece collaborative force transmission system:

[0053] When the twist lock at the connection part of the angle piece and the container angle piece is twisted to a relative angle of 90°, the effective contact area is the largest. The twist lock at the connection part of the angle piece is finally tightened by the torque-rotation angle method to restrict the overall Z-direction displacement of the track. Through the double-angle piece collaborative force transmission design, the three-direction forces (X / Y / Z) of the sliding track are transmitted to two adjacent container angle pieces to jointly bear, significantly improving the structural stability.

[0054] 5. Composite lubrication system:

[0055] Establish a "surface modification + solid lubrication + grease lubrication" trinity system: reduce the slip friction coefficient by measures such as pre-coating lithium-based grease on the working surface of the sliding rail, plasma nitriding treatment on 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] The present invention significantly improves the performance of the sliding rail support for large-span building structures supported on the top of containers through innovative concave-convex sliding rails linked with the support, extra-long sliding rail design, three-level constraint mechanism, cooperative force-bearing of double angle members, and composite lubrication system. Firstly, it is the ability to release temperature stress. When the large-span building structure on the top of the container is subjected to temperature loads, deformation in the span direction will occur. With the assistance of the lubrication system and the setting of the concave-convex sliding rails, the supports of the upper building structure can slide along with the convex sliders, and relative displacement is formed with the sliding rail base unit and the container to release the temperature stress, successfully solving the problem of temperature stress release for large-span building structures supported on the top of containers. Secondly, it is the ability of dynamic span reconstruction. Based on the extra-long stroke design of the concave double rails and the initial position adjustment amount, dynamic reconstruction of the large-span building structure can be achieved. Thirdly, it is the cooperative force-bearing of double angle members. Through the extra-long sliding track and its three-level limit system (X-direction limit member + Y-direction vertical plate + Z-direction twist lock), the cooperative force-bearing of double angle members is realized, improving the weak anti-side and anti-pulling abilities of the structure. Fourthly, it is the low friction characteristic. Through the synergistic effect of plasma nitrided tracks, self-lubricating pads, and lithium-based grease films, the sliding friction coefficient is reduced compared with traditional steel-steel contact. Fifthly, it is the breakthrough in construction efficiency. The modular design reduces the installation time of a single node. Through the final tightening process of the torque-rotation method, the assembly efficiency limit is increased, and the requirement for the ground flatness is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following briefly introduces the drawings required to be used in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0059] Figure 1 It is an overall three-dimensional view of a sliding 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 of the double-rail base, sliding unit, and limit member.

[0060] Figure 2 It is an exploded view of the sliding rail base unit of a sliding rail support for a large-span building structure supported on the top of a container according to an embodiment of the present invention, disassembling and showing the assembly relationship of the concave double rails (2 / 3), track connectors (4), and twist locks (203 / 303).

[0061] Figure 3 It is a detailed structural view of the sliding unit of a sliding 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 connection structure of the support (601) of the large-span building structure, embedded welding screw (702), and I-shaped slider (703).

[0062] Figure 4It is a cross-sectional view of a displacement limiting unit 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 restraint mechanisms in the X / Y / Z three directions.

[0063] Figure 5 It is a schematic diagram of the working of a lubrication system 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.

[0064] Figure 6 It is a block diagram of the installation process flow 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 figure: 1. Slide rail base unit;

[0066] 2. Inner concave track; 201. Concave chute track; 202. Angle piece vertical plate; 203. Angle piece connection part twist lock; 204. Inner angle piece;

[0067] 3. Outer concave track; 301. Concave chute track; 302. Angle piece vertical plate; 303. Angle piece connection part twist lock; 304. Outer angle piece;

[0068] 4. Track connecting piece; 401. Cover plate; 402. Bolt;

[0069] 5. Sliding unit;

[0070] 6. Structure end support; 601. Large-span building structure support; 602. Support base plate;

[0071] 7. Convex slider connecting piece; 701. Base plate; 702. Embedded welding screw; 703. I-shaped beam slider in the chute; 704. Self-lubricating copper-based composite material gasket;

[0072] 8. Displacement limiting unit;

[0073] 9. X-direction limiting piece; 901. Displacement limiting fixing plate; 902. Bolt;

[0074] 10. Gasket. Detailed implementation manners

[0075] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0076] As Figure 1 shown, it includes a slide rail support, and at least one slide rail support is provided on the top of the container.

[0077] The slide rail support mainly consists of a slide rail base unit 1, a sliding unit 5, a displacement limiting unit 8 and a lubrication system. The slide rail base unit 1 mainly consists of at least one concave rail 2 / 3. The sliding unit 5 is slidably mounted on the concave rail 2 / 3. A displacement limiting unit 8 for restricting the movement or position of the fixed sliding unit 5 is provided on the slide rail base unit 1 and the slide rail base unit 1.

[0078] As Figure 1 shown, each concave rail 2 / 3 mainly consists of a concave chute rail 201 / 301 and an angle member vertical plate 202 / 302. A dovetail groove is provided on the top surface of the concave chute rail 201 / 301. The sliding unit 5 is slidably mounted on the dovetail groove. One angle member vertical plate 202 / 302 is fixed on each side of the bottom of the end of the concave chute rail 201 / 301. The angle member vertical plate 202 / 302 is fixed to the bottom side of the concave chute rail 201 / 301 by welding. A rotatable angle member connection twist lock 203 / 303 is installed on the bottom surface of the end of the concave chute rail 201 / 301. The bottom surface of the end of the concave chute rail 201 / 301 is connected to the container top through an inner angle member 204 / 304.

[0079] A waist-shaped groove for inserting the angle member connection twist lock 203 / 303 is provided on the top surface of the inner angle member 204 / 304. Operation slot holes for adjusting and rotating the angle member connection twist lock 203 / 303 are provided on the surrounding side surfaces. The operation slot holes are for tools or hands to reach in and rotate the angle member connection twist lock 203 / 303. The length of the angle member connection twist lock 203 / 303 is less than the length of the waist-shaped groove but greater than the width of the waist-shaped groove. The angle member connection twist lock 203 / 303 is connected to the chute rail by plug welding or embedded welding through a perforation.

[0080] The width of the inner angle member 204 / 304 is the same as the width of the concave chute rail 201 / 301 of the concave rails 2 and 3. And the distance between the angle member vertical plates 202 / 302 on both sides of the concave chute rail 201 / 301 of the concave rails 2 and 3 is exactly equal to the width of the inner angle member 204 / 304.

[0081] Using the container corner fitting as the inner angle member 204 / 304, both ends of the concave rails 2 and 3 are connected to the container corner fittings at the top of the container.

[0082] An X-direction limiting member 9 for blocking the sliding of the sliding unit 5 is provided on one side of the top surface of the concave chute rail 201 / 301. The displacement limiting unit 8 is mainly composed of the angle member connection twist lock 203 / 303, the inner angle member 204 / 304 and the X-direction limiting member 9.

[0083] In a specific implementation, the X-direction limiting member 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 concave chute track 201 / 301 through a bolt 902 and covers the dovetail groove, so that the sliding unit 5 is blocked when passing through.

[0084] The displacement limiting fixing plate 901 is placed above the inner concave track to ensure that the slider does not slide out of the slide rail base.

[0085] The sliding unit 5 includes a structural end support 6 and a convex slider connecting member 7. The convex slider connecting member 7 is embedded in the dovetail groove of the concave chute track 201 / 301 and slides along the dovetail groove. The bottom of the structural end support 6 is installed on the convex slider connecting member 7, and the top is used to support the long-span building structure.

[0086] As Figure 3 shown, the convex slider connecting member 7 includes a bottom plate 701, a welded-in screw 702, an I-beam slider 703, and a self-lubricating copper-based composite material gasket 704. The bottom of the I-beam slider 703 is embedded in the dovetail groove through the self-lubricating copper-based composite material gasket 704. The top of the I-beam slider 703 serves as the bottom plate 701 and is located outside the dovetail groove and is in contact connection with the groove top surface. A plurality of vertical welded-in screws 702 are fixedly arranged on the top surface of the bottom plate 701. The X-direction sliding of the convex slider connecting member 7 realizes the release of the cross-direction displacement.

[0087] The structural end support 6 includes a long-span building structure support 601 and a support bottom plate 602. Through holes are provided on the support bottom plate 602. The support bottom plate 602 is installed on the top surface of the bottom plate 701, and the welded-in screw 702 passes through the through holes of the support bottom plate 602. The long-span building structure support 601 is installed on the top of the support bottom plate 602. The long-span building structure support 601 is used to support the main part of the long-span building structure to ensure the stability and uniform force of the entire structure. Specifically, the long-span building structure support 601 transmits the weight of the structure and external loads to the foundation through the connection with the support bottom plate 602. This support design can effectively disperse the structural force and provide appropriate elasticity and adjustment ability when dealing with temperature changes, earthquakes, or other dynamic loads.

[0088] On the top of the container, the slide rail base unit 1 is only composed of one concave track 2, 3.

[0089] On the top of the container, the sliding rail base unit 1 is mainly composed of a plurality of concave tracks 2 and 3 which are formed into a concave double rail through a track connecting piece 4 to limit the relative displacement between the double rails. A plurality of concave tracks 2 and 3 are arranged on the top of the container, and the concave chute tracks 201 and 301 of two adjacent concave tracks 2 and 3 are rigidly connected through the track connecting piece 4. Specifically, the concave chute tracks 201 and 301 of two adjacent concave tracks 2 and 3 are arranged in connection along the same straight line, and the ends of the concave chute tracks 201 and 301 of the two concave tracks 2 and 3 are respectively connected by the track connecting piece 4 at the connection, so that the concave chute tracks 201 and 301 of the two concave tracks 2 and 3 are rigidly connected.

[0090] A gasket 10 is arranged between the track connecting piece 4 and the container. The gasket arranged on the side of the track connecting piece fills the gap between the side beam of the container and the track to achieve fixed limit.

[0091] The concave double rail can change the internal space span of the upper large-span building structure by changing the initial position of the sliding unit, so as to realize the variability of the building span.

[0092] The track connecting piece 4 includes a cover plate 401 and bolts 402. The cover plate 401 wraps around the two sides and the top surface of the ends of the two concave tracks 2 and 3 and is fixed by passing the bolts 402 through.

[0093] In specific implementation, two concave tracks can be separately arranged:

[0094] The sliding rail base unit 1 is composed of an inner concave track 2, an outer concave track 3 and a track connecting piece 4. Among them: the inner concave track 2 includes a concave chute track 201, an angle piece vertical plate 202 and an angle piece connecting part twist lock 203, and the angle piece connecting part is fixed to the chute track by plug welding or submerged arc welding through a perforation; the structure of the outer concave track 3 is symmetrical to that of the inner track; the track connecting piece 4 is installed around the double rail and fixed by bolts 402 on the side to form an integral frame to limit the relative displacement between the double rails.

[0095] The sliding unit 5 is composed of a structural end support 6 and a convex slider connecting piece 7. The structural end support 6 is composed of a large-span building structure support 601 and a support bottom plate 602; the convex slider 7 includes a bottom plate 701, a submerged arc welding screw 702, an I-shaped beam slider 703 in the chute and a self-lubricating copper-based composite material gasket 704. The submerged arc welding screw 702 is rigidly connected to the support bottom plate 602, so that the two jointly form a "convex" slider.

[0096] The displacement limit unit 8 is composed of an X-direction limit member 9, Y-direction constraint vertical plates 202 / 302, Z-direction anti-pull and anti-twist locks 203 / 303, and a gasket 10. Among them, the displacement limit fixing plate 901 is placed above the inner concave track 2 and fixed by bolts 902 to ensure that the slider does not slide out of the slide rail base. A gasket 10 is arranged on the side of the track connecting member 4 to fill the gap between the container side beam and the track, realizing fixed limit.

[0097] The lubrication system 11 combines plasma nitriding, copper-based self-lubricating gasket, and high-pressure grease injection technologies to produce a synergistic effect. The working surface of the slide rail track is pre-coated with lithium-based grease; the working surface of the concave chute track 201 / 301 is treated by plasma nitriding; the I-beam slider 703 of the convex slider 7 is provided with a self-lubricating copper-based composite gasket 704.

[0098] The specific installation method of the present invention is as follows:

[0099] S01 Slide rail base unit positioning and installation: Use a total station to position on the top surface of the container; snap the corner piece vertical plate to the container side beam; insert the twist lock of the corner piece connecting part into the container corner piece hole for pre-fixing. The track connecting member covers the upper part of the double track and is tightened in three times by high-strength bolts; insert a weather-resistant rubber gasket at the gap between the side beam and the track; finally tighten the twist lock of the corner piece connecting part by the torque-rotation method.

[0100] S02 Lubrication system debugging: Use a film thickness gauge to detect the thickness of the grease layer on the working surface of the slide rail; use a high-pressure grease gun to replenish grease in the areas with insufficient local thickness, paying attention to flow control.

[0101] S03 Sliding unit assembly: Slide the convex slider into the base along the X direction by using a guiding tooling; use a laser alignment instrument to calibrate the initial position of the slider. Set up a temporary support frame during the hoisting of the main structure, paying attention to deflection control; connect the support base plate and the top plate of the convex slider through a screw. First complete the installation of one-sided supports, and use an electronic level to adjust the flatness; monitor the parallelism of the double tracks in real time during the installation of the symmetric side.

[0102] S04 Displacement limit unit installation: Place the displacement limit fixing plate above the inner concave track and fix it with bolts; apply a pre-tightening force to the bolts and use double nuts to prevent loosening.

[0103] As Figure 6 shown, the installation method of the embodiment provided by the present invention is as follows:

[0104] Please refer to Figure 2, in the first step, position and install the slide rail base unit. Use a total station to loft the double-rail axis on the top surface of the container; snap the angle piece vertical plate 202 of the inner concave track 2 onto the side wall of the container side beam, and insert the angle piece connection twist lock 203 into the container angle piece hole for preliminary fixation. Then assemble the track body, cover the cover plate 401 of the track connector 4 on the top of the double rail, and use high-strength bolts 402 to apply torque in three times according to "preliminary tightening 30% → re-tightening 50% → final tightening 100%". Insert a rubber gasket 10 at the gap between the container side beam and the track. Finally, perform final fixation of the twist lock, and use the torque-rotation method to finally tighten the angle piece connection twist lock 203.

[0105] Please refer to Figure 5 , in the second step, debug the lubrication system. Through the synergistic effect of the plasma nitrided track, self-lubricating gasket and lithium-based grease film, the present invention realizes a significant reduction in the sliding friction coefficient compared with the traditional steel-steel contact, μ = 0.15. To ensure the low-friction characteristics, after the track installation is completed, use a film thickness gauge to detect the thickness of the grease layer on the working surface of the slide rail, and use a high-pressure grease gun to replenish the grease in the areas with insufficient local thickness, with a pressure of 5 ± 0.5 MPa, to ensure uniform coverage of the thickness.

[0106] Please refer to Figure 3 , in the third step, perform dynamic assembly of the sliding unit. Slide the convex slider 7 into the base along the X direction, and calibrate the initial position with a laser alignment instrument. Then perform coordinated installation of the large-span building structure. When hoisting the main structure part, set an adjustable temporary support frame, and monitor the mid-span deflection in real time, with the control value ≤ L / 1500. Connect the support base plate 602 and the convex slider top plate 701 by fillet welding the screw 702, and apply the double-nut anti-loosening pre-tightening force according to 0.7 times the bolt yield strength. After the installation of a single-side support is completed, use an electronic level to adjust the flatness, with a resolution of 0.01 mm / m. When installing the symmetric side, use a laser tracker to monitor the parallelism of the double rail in real time.

[0107] Please refer to Figure 4 , in the fourth step, integrate the displacement limit unit. Place the displacement limit fixing plate 901 above the inner concave track 2, and use bolts 902 to apply pre-tightening force and tighten, with a double-nut anti-loosening structure.

[0108] The above installation method has the following beneficial effects:

[0109] The present invention significantly improves the performance of the sliding rail support for large-span building structures supported on the top of containers through innovative concave-convex sliding rails 1 / 5 linked to the support, extra-long sliding rail design 1, three-level restraint mechanism 8, cooperative force-bearing of double angle members 203 / 303, and composite lubrication system 11. First, it is the ability to release temperature stress. When the large-span building structure on the top of the container is subjected to temperature loads, deformation in the span direction will occur. With the assistance of the lubrication system and the setting of the concave-convex sliding rails 1 / 5, the support 6 of the upper building structure can slide along with the convex slider 7, and relative displacement is formed with the sliding rail base unit 1 and the container to release temperature stress, successfully solving the problem of temperature stress release for large-span building structures supported on the top of containers. Second, it is the ability of dynamic span reconstruction. Based on the extra-long stroke design and initial position adjustment amount of the concave double rails 2 / 3, dynamic reconstruction of the large-span building structure can be achieved. Third, it is the cooperative force-bearing of double angle members. The cooperative force-bearing of double angle members is realized through the extra-long sliding track and its three-level limit system [X-direction limit member 9 + Y-direction vertical plate 202 / 302 + Z-direction twist lock 203 / 303], improving the weak anti-lateral and anti-pulling capabilities of the structure. Fourth, it is the low friction characteristic. Through the synergistic effect of the plasma nitrided track 201 / 202, self-lubricating gasket 704, and lithium-based grease film 11, the sliding friction coefficient is significantly reduced compared with traditional steel-steel contact, μ = 0.15. Fifth, it is the breakthrough in construction efficiency. The modular design reduces the installation time of a single node. Through the final tightening process of the torque-rotation method, the assembly efficiency limit is increased, and the requirement for the ground flatness is reduced.

[0110] Thus, the present invention successfully solves the problem of cumulative release of temperature stress for large-span building structures supported on the top of containers, has excellent environmental adaptability and rapid assemblability, and has characteristics such as high construction efficiency, 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 container top. The slide rail support mainly consists of a slide rail base unit (1), a sliding unit (5), a displacement limiting unit (8) and a lubrication system. The slide rail base unit (1) mainly consists of at least one concave track (2 / 3). The sliding unit (5) is slidably installed on the concave track (2 / 3). A displacement limiting unit (8) for restricting the movement or position of the fixed sliding unit (5) is provided on the slide rail base unit (1) and the slide rail base unit (1).

2. The container top support connection structure for a long-span building structure according to claim 1, characterized in that: Each of the concave tracks (2 / 3) mainly consists of a concave chute track (201 / 301) and an angle member vertical plate (202 / 302); a dovetail groove is provided on the top surface of the concave chute track (201 / 301). The sliding unit (5) is slidably installed on the dovetail groove. One angle member vertical plate (202 / 302) is fixed on both sides of the bottom of the end of the concave chute track (201 / 301). A rotatable angle member connection twist lock (203 / 303) is installed on the bottom surface of the end of the concave chute track (201 / 301). The bottom surface of the end of the concave chute track (201 / 301) is connected to the container top through an inner angle member (204 / 304).

3. The container top support connection structure for a long-span building structure according to claim 1, characterized in that: A waist-shaped groove for inserting the angle member connection twist lock (203 / 303) is provided on the top surface of the inner angle member (204 / 304), and an operation slot hole for adjusting and rotating the angle member connection twist lock (203 / 303) is provided on the surrounding side surface. The width of the inner angle member (204 / 304) is the same as the width of the concave chute track (201 / 301) of the concave tracks (2, 3), and the distance between the angle member vertical plates (202 / 302) on both sides of the concave chute track (201 / 301) of the concave tracks (2, 3) is exactly equal to the width of the inner angle member (204 / 304).

4. The container top support connection structure for a long-span building structure according to claim 1, characterized in that: An X-direction limiting member (9) for blocking the sliding of the sliding unit (5) is provided on one side of the top surface of the concave chute track (201 / 301). The displacement limiting unit (8) is mainly composed of the angle member connection twist lock (203 / 303), the inner angle member (204 / 304) and the X-direction limiting member (9).

5. A container top support connection structure for a long-span building structure according to claim 1, characterized in that: The sliding unit (5) includes a structural end support (6) and a convex slider connecting member (7). The convex slider connecting member (7) is embedded in the dovetail groove of the concave chute track (201 / 301) and slides along the dovetail groove. The bottom of the structural end support (6) is installed on the convex slider connecting member (7), and the top is used to support the large-span building structure.

6. The container top support connection structure for a long-span building structure according to claim 5, characterized in that: The convex slider connecting member (7) includes a bottom plate (701), a buried welding screw (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 bottom plate (701) and is located outside the dovetail groove. A plurality of vertical buried welding screws (702) are fixedly provided on the top surface of the bottom plate (701); The structural end support (6) includes a long-span building structure support (601) and a support base plate (602); Through holes are provided on the support base plate (602). The support base plate (602) is installed on the top surface of the base plate (701), and the welded-in screw (702) passes through the through holes of the support base plate (602). The long-span building structure support (601) is installed on the top of the support base plate (602).

7. A container top support connection structure for a long-span building structure according to claim 1, characterized in that: The slide rail base unit (1) is composed of a concave track (2, 3).

8. A container top support connection structure for a long-span building structure according to claim 1, characterized in that: The slide rail base unit (1) is mainly composed of a plurality of concave tracks (2, 3) through track connectors (4). A plurality of concave tracks (2, 3) are arranged on the top of the container. Two adjacent concave tracks (2, 3) are arranged in connection along the same straight line. At the connection, the ends of the two concave tracks (2, 3) are respectively connected by track connectors (4) so that the two concave tracks (2, 3) are rigidly connected.

9. The container top support connection structure for a long-span building structure according to claim 8, characterized in that: The track connector (4) includes a cover plate (401) and bolts (402). The cover plate (401) wraps around the two sides and the top surface of the ends of the two concave tracks (2, 3) and is fixed by passing the bolts (402) through.

10. The installation method applied to the container top support connection structure according to any one of claims 1-9, characterized in that: The method includes: The first step, positioning and installation of the slide rail base unit: First, use a total station to carry out double-track axis lofting on the top surface of the container; Then, the angle piece vertical plates (202, 302) of the concave tracks (2, 3) are clamped with the side wall of the side beam of the container, and the angle piece connection twist lock (203) is inserted into the hole at the top of the container angle piece for pre-fixing; Then, the track main body is assembled. The cover plate (401) of the track connector (4) is covered on the top of the concave chute tracks (201 / 301) of the two concave tracks (2, 3), and high-strength bolts (402) are tightened in three steps: initial tightening of 30% → re-tightening of 50% → final tightening of 100%. Then, a rubber gasket (10) is embedded in the gap between the container side beam and the track; Finally, the angle piece connection twist lock (203) is finally tightened by the torque-rotation angle method; The second step, debugging the lubrication system: Apply a grease layer on the working surface of the track. After the installation is completed, use a film thickness gauge to detect the thickness of the grease layer on the working surface of the track. For areas with insufficient local thickness, use a high-pressure grease gun to replenish the grease to ensure uniform coverage of the thickness; The third step, dynamic assembly of the sliding unit: Slide the convex slider (7) along the X direction into the dovetail groove of the concave chute track (201 / 301) of the concave track (2, 3), and the initial position is calibrated by a laser alignment instrument; Then, the collaborative installation of the long-span building structure is carried out. When hoisting the main structure part of the long-span building structure, an adjustable temporary support frame is set up, and the mid-span deflection is monitored in real time; Connect the support base plate (602) and the convex slider top plate (701) through the welded-in screw (702); After the support installation is completed, use an electronic level to adjust the flatness; The fourth step, integration of the displacement limit unit: Place the displacement limit fixing plate (901) above the concave track (2), and use bolts (902) to apply a pre-tightening force to tighten, with a double-nut anti-loosening structure.

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