Double self-balancing large-span roof structure suitable for single-side sliding support condition

Abstract

The invention relates to a double-self-balancing large-span roof structure suitable for the condition of a single-side sliding support. A beam string structure is provided with a double-self-balancing structure and a wind-resistant cable system. The first vertical bearing internal force self-balancing structure is provided with an upper chord pressure-bearing rod, a vertical supporting rod and a bearing cable, and is configured as a vertical bearing system for roof weight and use load; the wind-resistant cable system is provided with a plurality of wind-resistant cables and is configured as a roof structure anti-overturning supporting system under the action of a reverse wind suction working condition; the second heavy wind suction working condition internal force self-balancing structure is provided with a balancing horizontal rod, a balancing vertical rod, a balancing stabilizing cable and a double-sliding support and is configured as an internal force balancing mechanism of the wind-resistant cable system under the wind suction working condition; the balance horizontal rods, the balance vertical rods and the balance stabilizing cables form a triangular balance bearing structure. The unfavorable conjoined influence on the main structures on the two sides is effectively avoided by selecting a single-side sliding method, meanwhile, the construction requirement for arranging the wind-resistant cable can be met, and the roof anti-overturning safety requirement under the wind suction working condition is met.

Description

Technical Field

[0001] The present application belongs to the technical field of large-span roof structures, and in particular relates to a double self-balancing large-span roof structure suitable for single-side sliding bearing conditions. Background Art

[0002] The existing large-span self-balancing string roof structure system usually includes the following two methods:

[0003] The first approach is to use a fixed (hinged) connection at both ends / circumference, which is usually applicable to large-span roof structures of the same structural unit. Since the roof spans the same structural unit, the fixed (hinged) connection support at both ends / circumference can be directly adopted. Since this type of roof uses fixed (hinged) supports at both ends and the span is the same structural unit, it is relatively convenient to set up a wind-resistant cable structure, which effectively meets the anti-overturning safety requirements of the roof structure under wind suction.

[0004] The second method is to use a connection method with one end fixed (hinged) and one end sliding, which is usually suitable for the layout of different structural units on both sides of the roof. Since the main structures on both sides of the roof do not belong to the same structural unit, the large-span roof system supported by the structural units at both ends cannot be directly fixed (hinged) connected to the structures at both ends. It is necessary to adjust the support position on one side to a sliding support structure, which only provides vertical support and does not transmit horizontal forces, thereby effectively avoiding the complex connected structure of the structural units on both sides due to the roof connection, which affects the structural safety performance. This type of roof uses a connection method with one end fixed (hinged) and one end sliding. Although it effectively avoids the adverse connection effects of the main structural units on both sides, it has caused obvious obstacles to the setting of the wind-resistant cable. There is no large-span self-balancing string roof structure system that can simultaneously use one end fixed (hinged) and one end sliding support and set wind-resistant cables.

[0005] In summary, the two main types of existing large-span self-balancing string-type roof structure systems cannot solve the need to set up sliding supports and wind-resistant cables at the same time; therefore, they cannot simultaneously meet the requirements of not causing adverse effects on the main structures on both sides and setting up wind-resistant cables to solve the roof's anti-overturning safety requirements under wind suction conditions. Therefore, it is urgent to develop a new large-span self-balancing string-type roof structure system that can meet the needs of setting up sliding supports and wind-resistant cables at the same time. Summary of the invention

[0006] In view of the above analysis, the embodiment of the present invention aims to provide a double self-balancing large-span roof structure suitable for single-sided sliding support conditions, which solves the above technical problems existing in the prior art. The present invention uses a single-sided double sliding support structure to effectively avoid the adverse connection effect on the main structures on both sides; at the same time, it can meet the structural requirements of setting up wind-resistant cables and solve the roof anti-overturning safety requirements under wind suction conditions.

[0007] The object of the present invention is achieved in that:

[0008] A double self-balancing large-span roof structure suitable for single-side sliding support conditions includes multiple beam string structures, wherein the beam string structure has:

[0009] The first vertical load-bearing internal force self-balancing structure has an upper chord pressure rod, vertical struts and load-bearing cables, and is configured as a vertical load-bearing system for the roof weight and service load;

[0010] The wind-resistant cable system has a plurality of wind-resistant cables configured as an anti-overturning support system for the roof structure under reverse wind suction conditions;

[0011] The second wind suction working condition internal force self-balancing structure has a balancing horizontal rod, a balancing vertical rod, a balancing stable cable and a double sliding support, and is configured as an internal force balancing mechanism of the wind-resistant cable system under wind suction working conditions; the balancing horizontal rod, the balancing vertical rod and the balancing stable cable form a triangular balancing bearing structure;

[0012] Among them, the double sliding support includes sliding support one and sliding support two, the extended section of the balance horizontal rod is connected to the left main structure at the first sliding connection point through sliding support one, the triangular balance load-bearing structure and a part of the wind-resistant cable are connected to the left main structure at the second sliding connection point through sliding support two; one end of the upper chord pressure rod is connected to the balance horizontal rod, and the other end is connected to the right main structure at the first fixed connection point through hinge support one; a part of the wind-resistant cable is connected to the right main structure at the second fixed connection point through hinge support two.

[0013] Furthermore, vertical cross stabilizing cables, upper chord cross stabilizing cables and supporting stabilizing rods are connected between two adjacent beam string structures.

[0014] Further, the second sliding connection point is located below the first sliding connection point, and the second fixed connection point is located below the first fixed connection point.

[0015] Furthermore, the upper chord pressure-bearing rod and the balance horizontal rod are an integrally formed structure, and the upper chord pressure-bearing rod, the balance horizontal rod and an extension section of the balance horizontal rod together constitute a whole upper chord rod.

[0016] Furthermore, the two ends of the load-bearing cable and the upper chord pressure-bearing rod have a first connection point and a second connection point, and the second connection point is located between the first connection point and the first fixed connection point; wind-resistant cables are connected between the second sliding connection point and the upper chord pressure-bearing rod, and between the second fixed connection point and the upper chord pressure-bearing rod.

[0017] Furthermore, the top end of the balance vertical rod is vertically connected to the balance horizontal rod at a third connection point, the connection point between the first end of the balance stabilization cable and the balance horizontal rod is a fourth connection point, the fourth connection point is located between the first sliding connection point and the third connection point, and the second end of the balance stabilization cable and the bottom end of the balance vertical rod are both connected to sliding support two.

[0018] Furthermore, the connection point between the anti-wind cable and the upper chord pressure rod is located at the connection between the top end of the vertical support rod and the upper chord rod; the connection point between the anti-wind cable and the load-bearing cable is located at the connection between the bottom end of the vertical support rod and the upper chord pressure rod.

[0019] Furthermore, a corbel is provided on the left main structure, and a sliding support is arranged between the top surface of the corbel and the lower surface of the end of the extended section of the balancing horizontal rod; the sliding support includes a seat plate, a steel block, a polyethylene tetrafluoro plate, and a limit block, the seat plate is fixed on the top surface of the corbel, the steel block is fixed on the lower surface of the end of the extended section of the balancing horizontal rod, the polyethylene tetrafluoro plate is arranged on the lower surface of the steel block, and the limit block is arranged on the upper surface of the outer end of the bottom plate, and is configured to limit the moving distance of the steel block and the polyethylene tetrafluoro plate.

[0020] Furthermore, the sliding support 1 also includes an adjustment plate, which is fixed on the bottom plate, located between the bottom plate and the polyethylene tetrafluoro plate, and is configured to adjust the vertical error.

[0021] Furthermore, the sliding support 2 includes a sliding seat, a slider, a top cover and an elastic buffer. A sliding cavity is provided in the sliding seat, the slider is movably installed in the sliding cavity, the top cover is arranged at the top opening of the sliding seat, the slider is fixedly connected to the top cover, and the top cover is connected to the balance vertical rod, the balance stabilization cable and the anti-wind cable; wherein two elastic buffers are provided in the sliding cavity, and the elastic buffers are configured to provide buffering when the slider moves in the sliding cavity.

[0022] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0023] a) The double self-balancing large-span roof structure suitable for single-side sliding support conditions provided by the present invention has a connection relationship between the beam string structure and the main structures on both sides, in which one side is fixedly connected and the other side is a double sliding connection using double sliding supports, which effectively avoids the substantial structural connection between the roof structure and the main structures on both sides, and reasonably avoids the adverse effects of the bearing capacity of the connected structure. At the same time, the load-bearing cable and the wind-resistant cable system respectively cope with the vertical bearing conditions represented by the weight of the roof and the use load, and the reverse bearing conditions dominated by wind suction control. The joint action of the two sets of cable systems ensures the bearing safety of the single beam string structure under a variety of complex working conditions. The single beam string structure adopts a double self-balancing structural mode. The vertical bearing internal force self-balancing structure mainly copes with the vertical bearing conditions represented by the weight of the roof and the use load; the second wind suction condition internal force self-balancing structure mainly copes with the roof anti-overturning safety problem under the wind suction control condition.

[0024] b) The double self-balancing large-span roof structure suitable for single-side sliding support conditions provided by the present invention adopts a second wind suction condition internal force self-balancing structure with double sliding supports, including a balance horizontal bar, a balance vertical bar, a balance stabilizing cable and a double sliding support; a triangular balance bearing structure is formed between the balance horizontal bar, the balance vertical bar and the balance stabilizing cable, which effectively alleviates the pressure of the bending moment concentration zone at the node area of ​​the balance vertical bar and the upper chord pressure bar. Through the mechanical disassembly mode of the geometric structure and the double sliding support conditions, the internal force balance of the wind-resistant cable system under wind suction conditions is solved. The double sliding support structure, on the one hand, ensures that the large-span roof system and the single-side main structure still maintain a horizontal force transmission disconnection relationship, avoiding the adverse effects of the connection of the main structures on both sides; on the other hand, it provides a double support condition for the mechanical balance triangle formed by the above-mentioned balance horizontal bar, balance vertical bar and balance stabilizing cable, ensuring the effective operation of the mechanical balance triangle under vertical support conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of this specification or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the embodiments of this specification. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0026] Figure 1 A schematic top view of a double self-balancing large-span roof structure suitable for single-side sliding support conditions provided by the present invention;

[0027] Figure 2 A schematic structural diagram of a double self-balancing large-span roof structure suitable for single-side sliding support conditions provided by the present invention;

[0028] Figure 3 A schematic structural diagram of the beam string structure provided by the present invention;

[0029] Figure 4 A schematic diagram of the deformation state of the beam string structure provided by the present invention under the action of wind pressure;

[0030] Figure 5 A schematic diagram of the deformation state of the beam string structure provided by the present invention under the action of wind suction;

[0031] Figure 6 A schematic structural diagram of a first sliding connection point between the beam string structure and the left main body structure provided by the present invention;

[0032] Figure 7 A schematic structural diagram of a sliding support provided by the present invention;

[0033] Figure 8 This is a structural schematic diagram of the sliding support 2 provided by the present invention.

[0034] Reference numerals:

[0035] 100, left main structure; 101, corbel; 200, right main structure; 300, large-span roof structure;

[0036] 1. Upper chord rod; 1a. Upper chord pressure rod; 1b. Balance horizontal rod; 1c. Extension section; 2. Load-bearing cable; 3. Vertical support rod; 4. Wind-resistant cable; 5. Balance vertical rod; 6. Balance stabilizing cable; 7. Sliding support 1; 71. Seat plate; 72. Steel block; 73. Polytetrafluoroethylene plate; 74. Limit block; 75. Adjustment plate; 76. Steel bar; 77. Dust cover; 8. Sliding support 2; 81. Sliding seat; 82. Sliding block; 83. Top cover; 84. Elastic buffer; 9. Hinge support 1; 10. Hinge support 2; 11. First connection point; 12. Second connection point; 13. Third connection point; 14. Fourth connection point; 15. Vertical cross stabilizing cable; 16. Upper chord cross stabilizing cable. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. It should be noted that, in the absence of conflict, the embodiments in the present disclosure and the features in the embodiments can be combined, separated, interchanged and / or rearranged with each other. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0038] In the accompanying drawings, the size and relative size of components may be exaggerated for clarity and / or descriptive purposes. When the exemplary embodiments may be implemented differently, a specific process sequence may be performed in a different order than described. For example, two successively described processes may be performed substantially simultaneously or in an order opposite to the order described. In addition, the same reference numerals represent the same components.

[0039] The terms used here are for the purpose of describing specific embodiments, and are not intended to be restrictive. As used here, unless the context clearly indicates otherwise, the singular forms "one (kind, person)" and "said (the)" are also intended to include plural forms. In addition, when the terms "comprise" and / or "include" and their variations are used in this specification, it is explained that there are stated features, integral bodies, steps, operations, parts, assemblies and / or their groups, but it is not excluded that there are or add one or more other features, integral bodies, steps, operations, parts, assemblies and / or their groups. It should also be noted that, as used here, the terms "substantially", "approximately" and other similar terms are used as approximate terms and not as degree terms, so that they are used to explain the inherent deviations of the measured values, calculated values ​​and / or the values ​​provided that will be recognized by those of ordinary skill in the art.

[0040] Example 1

[0041] A specific embodiment of the present invention discloses a double self-balancing large-span roof structure suitable for single-side sliding support conditions, which may be referred to as "large-span roof structure 300" hereinafter. Figure 1 As shown, the large-span roof structure 300 is constructed above the atrium between the main structures on both sides, for example, the main structures on both sides are the left main structure 100 and the right main structure 200. The left main structure 100 and the right main structure 200 can be either new buildings or existing buildings. Compared with new building structures, existing buildings are more sensitive to the unfavorable situation of being connected, so the large-span roof structure of the present invention is particularly suitable for the situation where an atrium roof is added to an existing building.

[0042] In this embodiment, a double self-balancing large-span roof structure suitable for single-side sliding bearing conditions includes a plurality of beam-string structures, wherein the beam-string structure has a first vertical load-bearing internal force self-balancing structure, a second wind suction working condition internal force self-balancing structure and an anti-wind cable system; the first vertical load-bearing internal force self-balancing structure has an upper chord pressure-bearing rod 1a, a vertical strut 3 and a load-bearing cable 2, and is configured as a vertical load-bearing system for the roof weight and the use load; the anti-wind cable system has a plurality of anti-wind cables 4, and is configured as an anti-overturning support system for the roof structure under the action of reverse wind suction working conditions; the second wind suction working condition internal force self-balancing structure has a balancing horizontal rod 1b, a balancing vertical rod 5, a balancing stabilizing cable 6 and double sliding bearings, and is configured as an internal force balancing mechanism of the anti-wind cable system under wind suction working conditions; the balancing horizontal rod 1b, the balancing vertical rod 5 and the balancing stabilizing cable 6 form a triangular balancing load-bearing structure;

[0043] Among them, the double sliding support includes a sliding support 1 7 and a sliding support 2 8, the extension section 1c of the balance horizontal rod 1b is connected to the left main structure 100 at the first sliding connection point through the sliding support 1 7, and the triangular balance load-bearing structure and a part of the wind-resistant cable 4 are connected to the left main structure 100 at the second sliding connection point through the sliding support 2 8; one end of the upper chord pressure rod 1a is connected to the balance horizontal rod 1b, and the other end is connected to the right main structure 200 at the first fixed connection point through the hinge support 1 9; a part of the wind-resistant cable 4 is connected to the right main structure 200 at the second fixed connection point through the hinge support 2 10.

[0044] The large-span roof structure of the above structure provided in the present embodiment utilizes the added second wind suction condition internal force self-balancing structure and the iconic double sliding support mechanism to construct a new large-span self-balancing tensioned roof structure system that can simultaneously meet the needs of setting sliding supports and setting wind-resistant cables; on the one hand, the single-sided double sliding support structure is utilized to effectively avoid the adverse connection effect on the main structures on both sides; at the same time, it can meet the structural requirements for setting wind-resistant cables and solve the roof anti-overturning safety requirements under wind suction conditions.

[0045] For the convenience of description, the plane where the single-beam string structure is located may be referred to as the single-beam plane below.

[0046] In this embodiment, the large-span roof structure 300 can be applied to a multi-space connected roof structure with a large-scale atrium covering function. Specifically, the large-span roof structure 300 includes multiple beam-string structures, for example, 10 beams; the span of a single beam can be changed with the plane layout according to the structural characteristics of the left main structure 100 and the right main structure 200, and a span of at least 40m can be achieved, which is specifically set according to actual engineering needs. Vertical cross stabilizing cables 15, upper chord cross stabilizing cables 16 and supporting stabilizing rods are connected between two adjacent beam-string structures. The supporting stabilizing rods are connected between the two adjacent beam-string structures and vertically connected between the upper chords of the two adjacent beam-string structures; further, the supporting stabilizing rods are located on the intersection of a plane where a group of vertical cross stabilizing cables 15 are located and a plane where a group of upper chord cross stabilizing cables 16 are located.

[0047] Since the upper chord 1 of the beam string structure is a horizontal member and is in a critical state of out-of-plane stability, out-of-plane stability measures need to be set to ensure the out-of-plane stability of the single-frame beam string structure; therefore, a single out-of-plane cross stabilizing cable is set between two adjacent beam string structures, that is, a vertical cross stabilizing cable 15 is set as a single-frame out-of-plane stability control measure, and the vertical cross stabilizing cable 15 is located in a vertical plane perpendicular to the plane of the single frame. The out-of-plane cross stabilizing cable tensioning scheme adopts manual tensioning with basket bolts, and no additional pre-tensioning force is set.

[0048] In order to ensure the integrity of the roof, an upper chord cross stabilizing cable 16 is arranged along the circumference and the middle between the roof chord rods 1. The upper chord cross stabilizing cable 16 is located in the horizontal plane to ensure the integrity of the roof. The upper chord cross stabilizing cable 16 adopts a structural setting scheme, and the basket bolts are manually tightened, and no additional pre-tensioning force is set.

[0049] In the above structure, a single beam string structure is used to form multiple groups of in-frame structural units as a two-dimensional scale structural load-bearing unit; the vertical cross stabilizing cable 15 is set to ensure the out-of-plane stability of the single frame; the upper chord horizontal cross stabilizing cable is set to provide the overall in-plane stiffness of the roof, ensuring the integrity and coordinated horizontal load-bearing performance of the roof. The vertical cross stabilizing cable out of the plane of the single frame and the supporting stabilizing rod out of the plane of the single frame provide the connection and out-of-plane stability between the beam string structures, ensuring that the beam string structures form a spatially stable load-bearing structure through the above connection, as a three-dimensional scale structural load-bearing system.

[0050] Optionally, the large-span roof structure 300 is also provided with an end cantilever structure, which includes a cantilever upper chord and a cantilever area wind-resistant cable. The end cantilever structure provides a cantilever support structure for the range that the main structure on both sides of the roof end cannot provide, thereby constructing an extended covering structure of the spatial roof system.

[0051] In this embodiment, the upper chord pressure-bearing rod 1a and the balance horizontal rod 1b are continuously arranged, that is, the upper chord pressure-bearing rod 1a, the balance horizontal rod 1b and the extension 1c of the balance horizontal rod 1b are an integrally formed structure, and the upper chord pressure-bearing rod 1a, the balance horizontal rod 1b and the extension 1c of the balance horizontal rod 1b together constitute a whole upper chord rod 1, such as Figure 3 That is to say, the upper chord pressure rod 1a, the balance horizontal rod 1b and the extension section 1c of the balance horizontal rod 1b are divided into sections on the entire upper chord rod 1 according to different effects.

[0052] Continue to refer to Figures 2 to 3 The tension beam structure comprises an upper chord pressure rod 1a, a balance horizontal rod 1b, an extension section 1c of the balance horizontal rod 1b, a load-bearing cable 2, a vertical strut 3, and an anti-wind cable 4; a plurality of vertical struts 3 are arranged between the upper chord pressure rod 1a and the load-bearing cable 2; the connection point between the first end of the upper chord rod 1 and the left main structure 100 is a first sliding connection point, and the connection point between the second end of the upper chord rod 1 and the right main structure 200 is a first fixed connection point; the load-bearing cable 2 may also be referred to as a lower suspension cable, which is used for vertical load-bearing, and the two ends of the load-bearing cable 2 and the upper chord pressure rod 1a have a first connection point 11 and a second connection point 12, and the second connection point 12 is located between the first connection point 11 and the first fixed connection point; an anti-wind cable 4 is connected between the second sliding connection point and the upper chord pressure rod 1a, and between the second fixed connection point and the upper chord pressure rod 1a.

[0053] In one of the optional embodiments, the top end of the balance vertical rod 5 is vertically fixedly connected to the balance horizontal rod 1b at the third connection point 13, the connection point between the first end of the balance stabilizing cable 6 and the balance horizontal rod 1b is the fourth connection point 14, the fourth connection point 14 is located between the first sliding connection point and the third connection point 13, the balance horizontal rod 1b is between the third connection point 13 and the fourth connection point 14, and the extension section 1c of the balance horizontal rod 1b is between the fourth connection point 14 and the first sliding connection point; the second end of the balance stabilizing cable 6 and the bottom end of the balance vertical rod 5 are both connected to the second sliding connection point, so that the vertical rod, the balance stabilizing cable 6 and the balance horizontal rod 1b form a triangular balance bearing structure. The present application constructs a triangular balance bearing structure through the balance stabilizing cable 6, the balance vertical rod 5 and the balance horizontal rod 1b, and the triangular balance bearing structure is connected to the sliding support 2, so that the lower end of the triangular support tensile structure can adaptively move a certain safe distance under the action of wind suction and wind pressure, thereby meeting the structural safety requirements.

[0054] Specifically, the first end of the upper chord rod 1, i.e., the first end of the balance horizontal rod 1b, is slidably connected to the left main structure 100 via a sliding support 1 7, and the second end of the upper chord rod 1, i.e., the second end of the upper chord pressure rod 1a, is fixedly connected to the right main structure 200 via a hinge support 1 9. The second sliding connection point is provided with a sliding support 2 8, and the second end of the balance stabilizing cable 6 and the bottom end of the balance vertical rod 5 are both connected to the sliding support 2 8.

[0055] In this embodiment, a part of the wind-resistant cable 4 is fixedly connected to the right main body structure 200 through the hinge support 2 10, and a part of the wind-resistant cable 4 is connected to the sliding support 2 8. Optionally, the connection point between the wind-resistant cable 4 and the upper chord pressure-bearing rod 1a is located at the connection between the upper end of the vertical support rod 3 and the upper chord pressure-bearing rod 1a; the connection point between the wind-resistant cable 4 and the load-bearing cable 2 is located at the connection between the lower end of the vertical support rod 3 and the upper chord pressure-bearing rod 1a.

[0056] In this embodiment, by setting a sliding support 7 between the end of the balance horizontal bar 1b and the top of the left main structure 100, the upper chord bar 1 can move within a certain range relative to the left main structure 100. In order to facilitate the sliding support 7, a bracket 101 can be set on the left main structure 100, and the sliding support 7 is set between the top surface of the bracket 101 and the lower surface of the end of the extension section 1c of the balance horizontal bar 1b.

[0057] In one of the optional embodiments, the sliding support 7 as a whole adopts a dual-purpose structure of compression and pulling, which mainly solves the downward pressure under the action of ordinary vertical load (roof weight and use load) and the pulling force under the wind suction control condition. The sliding support 7 adopts a slidable reverse buckle structure to take into account both the longitudinal sliding function and the vertical compression and pulling dual-purpose function. Figure 6 to Figure 7 The sliding support 17 comprises a seat plate 71, a steel block 72, a polyethylene tetrafluoro plate 73, and a stop block 74. The seat plate 71 is fixed on the top surface of the corbel 101, the steel block 72 is fixed on the lower surface of the end of the upper chord rod 1, the polyethylene tetrafluoro plate 73 is arranged on the lower surface of the steel block 72, and the stop block 74 is arranged on the upper surface of the outer end of the bottom plate, and is configured to limit the moving distance of the steel block 72 and the polyethylene tetrafluoro plate 73. The outer end of the bottom plate here refers to the end close to the right main structure 200. Through the limiting effect of the stop block 74, the steel block 72 fixed to the end of the extension section 1c of the balance horizontal rod 1b can only move within the range from the inner side of the stop block 74 to the left main structure 100.

[0058] Optionally, two steel bars 76 are welded to the lower surface of the steel block 72 , the polyethylene tetrafluoro plate 73 is clamped and fixed between the two steel bars 76 , and the thickness of the polyethylene tetrafluoro plate 73 is greater than the diameter of the steel bars 76 .

[0059] Furthermore, the sliding support 7 also includes an adjustment plate 75, which is fixed on the bottom plate and located between the bottom plate and the polyethylene tetrafluoro plate 73, and is configured to adjust the vertical error and improve the assembly accuracy.

[0060] Furthermore, a dust cover 77 is provided on the periphery of the polyethylene tetrafluoroethylene plate 73 .

[0061] In one optional embodiment, referring to Figure 8 The sliding support 8 includes a sliding seat 81, a slider 82, a top cover 83 and an elastic buffer 84. The sliding seat 81 is provided with a sliding cavity, the slider 82 is movably installed in the sliding cavity, the top cover 83 is arranged at the top opening of the sliding seat 81, the slider 82 is fixedly connected to the top cover 83, and the top cover 83 is connected to the balance vertical rod 5, the balance stabilizing cable 6, and the wind-resistant cable 4; wherein, two elastic buffers 84 are provided in the sliding cavity, the two elastic buffers 84 are located on both sides of the moving direction of the slider 82, and the elastic buffers 84 are configured as buffering and limiting when the slider 82 moves in the sliding cavity, so as to avoid rigid impact on the inner wall of the sliding cavity. Since the top cover 83 is connected to the balance vertical rod 5, the balance stabilizing cable 6 and the wind-resistant cable 4, the top cover 83 and the slider 82 can move synchronously. When the slider 82 moves in the inner cavity of the sliding seat 81, it will be buffered and limited by the elastic buffer 84, so as to avoid the slider 82 and the sliding seat 81 from rigid contact when the balance vertical rod 5 moves.

[0062] Preferably, the elastic buffer 84 is made of laminated rubber, that is, the sliding support 8 uses a laminated rubber with a large compression modulus and arranged horizontally as a sliding limit structure, where the horizontal direction refers to the direction with a large compression modulus. If a completely rigid limit structure is directly used, the support or the lower supporting structure may be brittlely damaged when dealing with extreme earthquake conditions, and the structural ductility is insufficient; if a traditional spring plate limit structure is used, its compression modulus is too low, and it is almost certain to be penetrated when dealing with extreme earthquake conditions, and the semi-rigid limit function is actually lost; in summary, the horizontal laminated rubber limit structure is used, which has a large compression modulus and is not easy to be penetrated; the material itself still has certain semi-rigid characteristics, effectively avoiding brittle damage in the node or support area, and the overall performance is the best.

[0063] Compared with the prior art, the double self-balancing large-span roof structure suitable for single-side sliding support provided in this embodiment has the following beneficial effects:

[0064] 1. The connection between the beam string structure and the main structures on both sides is a fixed connection on one side and a double sliding connection with double sliding supports on the other side, which effectively avoids the substantial structural connection between the roof structure and the main structures on both sides, and reasonably avoids the adverse impact of the connected structure on the load-bearing. At the same time, the load-bearing cable and wind-resistant cable system respectively deal with the vertical load-bearing conditions represented by the weight of the roof and the service load, and the reverse load-bearing conditions dominated by wind suction control. The joint action of the two sets of cable systems ensures the load-bearing safety of the single-frame beam string structure under a variety of complex working conditions. The single-frame beam string structure adopts a double self-balancing structural mode. The vertical load-bearing internal force self-balancing structure mainly deals with the vertical load-bearing conditions represented by the weight of the roof and the service load; the second wind suction condition internal force self-balancing structure mainly deals with the roof anti-overturning safety problem under the wind suction control condition.

[0065] 2. The internal force self-balancing structure of the second wind suction working condition using double sliding supports includes a balanced horizontal bar, a balanced vertical bar, a balanced stabilizing cable and a double sliding support; a triangular balanced bearing structure is formed between the balanced horizontal bar, the balanced vertical bar and the balanced stabilizing cable, which effectively relieves the pressure of the bending moment concentration zone at the node area of ​​the balanced vertical bar and the upper chord pressure bar. Through the mechanical disassembly mode of the geometric structure and the conditions of the double sliding supports, the internal force balance of the wind-resistant cable system under the wind suction working condition is solved. The double sliding support structure, on the one hand, ensures that the large-span roof system and the single-sided main structure still maintain a horizontal force transmission disconnection relationship, avoiding the adverse effects of the connection of the main structures on both sides; on the other hand, it provides a double support condition for the mechanical balance triangle formed by the above-mentioned balanced horizontal bar, balanced vertical bar and balanced stabilizing cable, ensuring the effective work of the mechanical balance triangle under the vertical support condition.

[0066] 3. The large-span roof structure of this application adopts a steel structure system as a whole to achieve a large span and a large cantilever structure, which can effectively reduce the deadweight of the structure, reduce the height of structural components, and increase the indoor clearance height.

[0067] 4. In view of the actual situation of large-scale arrangement of inclined columns, inclined column conversion, large span, large cantilever, hanging column, truss of executive training room, etc., the use of steel structure system will effectively improve the safety redundancy of the overall structural design due to its significant advantages such as stable tension transmission and excellent seismic performance.

[0068] 5. The large-span roof structure of this application adopts a steel structure system with the advantages of less material consumption, short construction period, high industrialization level, and recyclable materials, which can effectively match the green and environmentally friendly design concept of the building.

[0069] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the present application in detail. It should be understood that the above description is only the specific implementation method of the present application and is not intended to limit the scope of protection of the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A double self-balancing large-span roof structure suitable for single-side sliding support conditions, characterized in that: The invention comprises a plurality of beam string structures, wherein the beam string structure has: The first vertical load-bearing internal force self-balancing structure has an upper chord pressure-bearing rod (1a), a vertical support rod (3) and a load-bearing cable (2), and is configured as a vertical load-bearing system for the roof weight and the service load; The wind-resistant cable system comprises a plurality of wind-resistant cables (4) and is configured as an anti-overturning support system for the roof structure under the action of reverse wind suction conditions; The second wind suction working condition internal force self-balancing structure comprises a balancing horizontal rod (1b), a balancing vertical rod (5), a balancing stabilizing cable (6) and a double sliding support, and is configured as an internal force balancing mechanism of the wind-resistant cable system under wind suction working conditions; the balancing horizontal rod (1b), the balancing vertical rod (5) and the balancing stabilizing cable (6) form a triangular balancing bearing structure; The double sliding support comprises a sliding support 1 (7) and a sliding support 2 (8); the extension section (1c) of the balance horizontal rod (1b) is connected to the left main structure (100) at a first sliding connection point via the sliding support 1 (7); the triangular balance bearing structure and a part of the wind-resistant cable (4) are connected to the left main structure (100) at a second sliding connection point via the sliding support 2 (8); one end of the upper chord pressure rod (1a) is connected to the balance horizontal rod (1b), and the other end is connected to the right main structure (200) at a first fixed connection point via the hinge support 1 (9); a part of the wind-resistant cable (4) is connected to the right main structure (200) at a second fixed connection point via the hinge support 2 (10).

2. The double self-balancing large-span roof structure suitable for single-side sliding support conditions according to claim 1 is characterized in that: A vertical cross stabilizing cable (15), an upper cross stabilizing cable (16) and a supporting stabilizing rod are connected between two adjacent beam string structures.

3. The double self-balancing large-span roof structure suitable for single-side sliding support conditions according to claim 1 is characterized in that: The second sliding connection point is located below the first sliding connection point, and the second fixed connection point is located below the first fixed connection point.

4. The double self-balancing large-span roof structure suitable for single-side sliding support conditions according to claim 1 is characterized in that: The upper chord pressure-bearing rod (1a) and the balance horizontal rod (1b) are an integrally formed structure, and the upper chord pressure-bearing rod (1a), the balance horizontal rod (1b) and the extension section (1c) of the balance horizontal rod (1b) of claim J1ZSP250072CN together constitute a whole upper chord rod (1).

5. The double self-balancing large-span roof structure suitable for single-side sliding support conditions according to claim 4 is characterized in that: The two ends of the load-bearing cable (2) and the upper chord pressure-bearing rod (1a) have a first connection point (11) and a second connection point (12), and the second connection point (12) is located between the first connection point (11) and the first fixed connection point; and wind-resistant cables (4) are connected between the second sliding connection point and the upper chord pressure-bearing rod (1a) and between the second fixed connection point and the upper chord pressure-bearing rod (1a).

6. The double self-balancing large-span roof structure suitable for single-side sliding support conditions according to claim 5 is characterized in that: The top end of the balancing vertical rod (5) is vertically connected to the balancing horizontal rod (1b) at a third connection point (13); the connection point between the first end of the balancing stabilizing cable (6) and the balancing horizontal rod (1b) is a fourth connection point (14); the fourth connection point (14) is located between the first sliding connection point and the third connection point (13); the second end of the balancing stabilizing cable (6) and the bottom end of the balancing vertical rod (5) are both connected to the sliding support 2 (8).

7. The double self-balancing large-span roof structure suitable for single-side sliding support conditions according to claim 6 is characterized in that: The connection point between the wind-resistant cable (4) and the upper chord pressure-bearing rod (1a) is located at the connection between the top end of the vertical support rod (3) and the upper chord rod (1); The connection point between the wind-resistant cable (4) and the load-bearing cable (2) is located at the connection between the bottom end of the vertical support rod (3) and the upper chord pressure-bearing rod (1a).

8. The double self-balancing large-span roof structure suitable for single-side sliding support conditions according to claim 1 is characterized in that: A corbel (101) is provided on the left main body structure (100), and a sliding support (7) is arranged between the top surface of the corbel (101) and the lower surface of the end of the extension section (1c) of the balance horizontal rod (1b); The sliding support (7) comprises a seat plate (71), a steel block (72), a polyethylene tetrafluoro plate (73), and a limit block (74); the seat plate (71) is fixed on the top surface of the corbel (101); the steel block (72) is fixed on the lower surface of the end of the extension section (1c) of the balance horizontal rod (1b); the polyethylene tetrafluoro plate (73) is arranged on the lower surface of the steel block (72); and the limit block (74) is arranged on the upper surface of the outer end of the bottom plate and is configured to limit the moving distance of the steel block (72) and the polyethylene tetrafluoro plate (73).

9. The double self-balancing large-span roof structure suitable for single-side sliding support conditions according to claim 8, characterized in that: The sliding support (7) further comprises an adjustment plate (75), which is fixed on the bottom plate, located between the bottom plate and the polyethylene tetrafluoro plate (73), and is configured to adjust the vertical error.

10. The double self-balancing large-span roof structure suitable for single-side sliding support conditions according to claim 1, characterized in that: The second sliding support (8) comprises a sliding seat (81), a slider (82), a top cover (83) and an elastic buffer (84); the sliding seat (81) is provided with a sliding cavity, the slider (82) is movably installed in the sliding cavity, the top cover (83) is arranged at the top opening of the sliding seat (81), the slider (82) is fixedly connected to the top cover (83), and the top cover (83) is connected to the balance vertical rod (5), the balance stabilizing cable (6) and the wind-resistant cable (4); Two elastic buffers (84) are arranged in the sliding cavity, and the elastic buffers (84) are configured to provide buffering when the sliding block (82) moves in the sliding cavity.

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