A steel structure roof truss system with adaptive temperature regulation

Abstract

The present invention relates to a steel structure roof truss system with adaptive temperature regulation, comprising: a roof truss body, including a steel roof truss and a steel roof truss enclosure structure, the steel roof truss including a box girder; a first support system provided at the four corners of the steel roof truss; a second support system provided in the middle of the four sides of the steel roof truss; a temperature compensation and coordination system, including an electro-thermal conduction device and cooling holes, the electro-thermal conduction device being circumferentially laid on the inner wall of the box girder; the cooling holes being opened on the side wall of the box girder and communicating with a cooling system; a monitoring system, including a deformation monitoring component and a temperature monitoring device, the deformation monitoring component being coupled to at least one of the roof truss body, the first support system and the second support system, the temperature monitoring device being installed on the roof truss body; and a monitoring and control platform coupled to the temperature compensation and coordination system and the monitoring system. This design enables the steel structure roof truss to no longer rely entirely on the temperature changes of the external environment, but to be able to actively adapt and adjust, enhancing its stability and durability.

Description

Technical Field

[0001] The present invention relates to the technical field of steel structure roof truss construction, and particularly relates to a steel structure roof truss system with self - adaptive temperature regulation. Background Art

[0002] At present, for some parts such as the lobbies of public buildings with high lighting requirements, the form of combining a steel structure roof truss with lighting glass can be adopted to meet the lighting requirements. However, the temperature difference between the inside and outside of the steel roof truss in this part changes greatly, and the steel structure will produce shrinkage deformation under the influence of temperature. Measures need to be taken to control the deformation caused by the expansion or contraction of the steel structure to avoid damage to the connection parts such as support nodes and welds. At the same time, in order to improve the use comfort, anti - condensation measures need to be taken for the enclosure structures such as glass. Especially when there are plant landscapes arranged under the steel roof truss, the above - mentioned functional requirements are even more important.

[0003] In the prior art, the support of the steel roof truss is generally fixedly connected to the structure by welding, etc. When the temperature changes greatly or an earthquake occurs, the internal force caused by the deformation and displacement change of the steel roof truss is not easy to be released, which is easy to damage the connection nodes at the support of the steel roof truss and affect the structural safety. In addition, for the high - altitude space enclosure roof with plants arranged below, when the indoor - outdoor temperature difference is large, it is easy to cause condensation and dripping. The prior art generally solves this problem by blowing air or setting a ceiling, etc., which affects the experience and aesthetics.

[0004] Therefore, it is necessary to propose a new steel structure roof truss that can not only adapt to temperature changes to improve the safety of the steel roof truss but also improve the comfort of the building. Summary of the Invention

[0005] In view of the deficiencies of the prior art, the main purpose of the present invention is to provide a steel structure roof truss system with self - adaptive temperature regulation to solve one or more problems in the prior art.

[0006] The technical solution of the present invention is as follows:

[0007] A steel structure roof truss system with self - adaptive temperature regulation, comprising:

[0008] A roof truss body, arranged on the main structure, including a steel roof truss and a steel roof truss enclosure structure, wherein the steel roof truss includes a box - type beam;

[0009] A first support system, arranged at the four corners of the steel roof truss, for fixedly connecting the steel roof truss and the main structure;

[0010] A second support system, arranged in the middle of the four sides of the steel roof truss, for slidably connecting the steel roof truss and the main structure;

[0011] Monitoring system, including a deformation monitoring component and a temperature monitoring device, the deformation monitoring component being coupled to at least one of the roof truss body, the first support system and the second support system for monitoring the deformation amount of the roof truss body, and the temperature monitoring device being installed on the roof truss body for monitoring the temperature change of the roof truss body;

[0012] Temperature compensation and coordination system, coupled to the monitoring system and receiving the monitored deformation amount of the roof truss body, including an electro-thermal conduction device and a cooling system. The electro-thermal conduction device is circumferentially laid on the inner wall of the box girder and is adapted to heat up the box girder when receiving the shrinkage deformation amount of the roof truss body transmitted by the monitoring system; cooling holes are provided on the side wall of the box girder, and the cooling system is communicated with the cooling holes and is adapted to cool down the box girder when receiving the expansion deformation amount of the roof truss body transmitted by the monitoring system.

[0013] Preferably, the first support system includes:

[0014] A support base plate, connected to the bottom of the steel roof truss, and a plurality of anchor bolt holes are provided on the support base plate;

[0015] The first embedded part, including an embedded anchor plate, an adjusting nut and an anchor bolt. The embedded anchor plate is arranged below the support base plate and is embedded in the main structure and fixedly connected to the main structure. A through anchor bolt hole corresponding to the anchor bolt hole provided on the support base plate is provided on the embedded anchor plate. The adjusting nut is arranged at the bottom of the embedded anchor plate and / or above the support base plate. One end of the anchor bolt passes through the main structure and is fixedly connected to the main structure, and the other end passes through the anchor bolt holes of the embedded anchor plate and the support base plate and is fixed by the adjusting nut.

[0016] Preferably, the aperture of the anchor bolt hole provided on the support base plate is larger than the aperture of the anchor bolt hole provided on the embedded anchor plate for forming a displacement space to limit the horizontal sliding of the roof truss body within a predetermined range.

[0017] Preferably, a shear-resistant member is welded to the bottom of the embedded anchor plate, and the cross section of the shear-resistant member is cross-shaped; and / or

[0018] Grouting holes are provided on the embedded anchor plate for grouting the main structure with concrete.

[0019] Preferably, the first support system further includes a friction plate, and the friction plate is arranged between the support base plate and the embedded anchor plate and is adhesively connected to the support base plate and the embedded anchor plate.

[0020] Preferably, the second support system includes:

[0021] A spherical bearing, arranged below the steel roof truss, and its top is welded and fixed to the box girder;

[0022] The second embedded part, including an embedded plate and anchor bars, wherein the embedded plate is embedded in the main structure and fixedly connected to the main structure, the upper surface of the embedded plate is fixedly welded to the bottom of the spherical bearing, and the anchor bars are embedded in the main structure, and the top ends thereof are fixedly welded to the lower surface of the embedded plate.

[0023] Preferably, the spherical bearing includes:

[0024] An upper bearing plate assembly, with a groove provided below it;

[0025] A spherical crown liner, arranged in the groove, the spherical crown liner has an upper plane and a lower spherical surface, and the upper plane is matched with the lower surface of the groove;

[0026] A lower bearing plate assembly, the top of which is arranged below the spherical crown liner in the groove, the top is provided with a downward concave arc surface, which is matched with the lower spherical surface, and a gap is reserved between the outer periphery of the top of the lower bearing plate assembly and the groove;

[0027] A plane friction plate, arranged between the lower surface of the groove and the upper plane, and adhesively connected to the upper bearing plate assembly and the spherical crown liner;

[0028] A spherical surface friction plate, arranged between the arc surface and the lower spherical surface, and adhesively connected to the spherical crown liner and the lower bearing plate assembly.

[0029] Preferably, the steel roof truss enclosure structure is an electrically heated glass plate, which is formed by laminating a transparent conductive film along the inner surface of tempered insulating glass.

[0030] Preferably, the electric heat conduction device includes:

[0031] A heat conduction element, made of at least one of copper, aluminum or heat-conducting silica gel, is made into heat-conducting sheets and laid on the inner wall of the box girder for uniformly transferring heat to the box girder;

[0032] An electric heating element, thermally coupled to the heat conduction element, for generating heat by passing an electric current;

[0033] A fixing device, including at least one of a bracket, a buckle and an adhesive, for stably fixing the heat conduction element and the electric heating element on the box girder.

[0034] Preferably, the deformation monitoring assembly includes:

[0035] A laser rangefinder, installed on the steel roof truss corresponding to the position of the first bearing system and / or the second bearing system, for monitoring the deformation displacement of the steel roof truss; and / or

[0036] An inclinometer, installed on the second support system, for monitoring the inclination angle of the roof truss body; and / or

[0037] An automated machine vision intelligent measuring instrument, installed directly below the roof truss, for monitoring the overall deformation of the roof truss body.

[0038] Preferably, the temperature monitoring device is an intelligent temperature sensor.

[0039] The beneficial effects of the present invention compared with the prior art are: The steel structure roof truss system with adaptive temperature regulation proposed by the present invention has the following practical effects:

[0040] The first support system ensures that when the steel structure roof truss is subjected to external forces, the four corners can be stably supported, thus preventing the roof truss from deforming or being damaged due to uneven stress.

[0041] The second support system enables the steel structure roof truss to slide and adjust within a certain range when affected by factors such as temperature changes, thermal expansion and contraction, so as to adapt to the displacement and deformation of the structure caused by these factors. The sliding connection of the second support system not only reduces the stress concentration inside the structure, extends the service life of the steel structure roof truss, but also improves the adaptability and flexibility of the steel structure roof truss.

[0042] In the present invention, the designs of the planar friction plate, spherical crown liner, spherical friction plate and friction plate are all to facilitate the relative sliding between the roof truss body and the main structure. This sliding design allows a certain degree of freedom between the roof truss body and the main structure to adapt to the displacement caused by temperature changes, thereby avoiding structural stress concentration and damage caused by temperature changes.

[0043] The present invention lays an electric heat conduction device on the inner wall of the box girder to heat up the steel roof truss under cold temperatures and control the deformation caused by excessive shrinkage.

[0044] The present invention opens holes on the side wall of the box girder and connects them to the indoor central air-conditioning cooling system to cool down the steel roof truss under high temperatures and control the deformation caused by excessive expansion.

[0045] The steel roof truss enclosure structure of the present invention uses electrically heated glass, and realizes the electric heating function by pasting a transparent conductive film on the inner surface of the tempered insulating glass, preventing the steel roof truss glass from condensing due to the temperature difference between indoors and outdoors.

[0046] The monitoring system proposed by the present invention monitors the deformation displacement of the steel roof truss through a laser rangefinder; monitors the inclination angle of the roof truss body through an inclinometer, and monitors the overall deformation of the roof truss body through an automated machine vision intelligent measuring instrument. The three are used in combination to form a comprehensive, efficient and accurate monitoring system. The laser rangefinder, inclinometer and automated machine vision intelligent measuring instrument each play their unique advantages, complement each other, and jointly ensure the structural safety of the roof truss body. At the same time, this comprehensive monitoring solution also improves work efficiency, reduces maintenance costs, and provides a strong guarantee for the long-term stable operation of the structure. More precisely, the present invention mainly activates the automatic monitoring system through changes in angles and distances, and feeds back the change information to the manager, reducing the need for the manager to measure the changes in the roof truss through other means.

[0047] It should be understood that the implementation of any embodiment of the present invention does not mean that multiple or all of the above beneficial effects need to be simultaneously achieved or met. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only exemplary, and those of ordinary skill in the art can obtain other implementation drawings according to the provided drawings without creative efforts.

[0049] The structures, proportions, sizes, etc. illustrated in this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention. Therefore, they do not have technical essence. Any modification of the structure, change in the proportional relationship or adjustment of the size, without affecting the efficacy that the present invention can produce and the purpose that can be achieved, should still fall within the scope covered by the technical content disclosed in the present invention.

[0050] Figure 1 Schematic diagram of the overall structure of the roof truss body for some embodiments of the present invention;

[0051] Figure 2 Schematic diagram of the installation of the first support system and the second support system for some embodiments of the present invention;

[0052] Figure 3 Schematic diagram of the overall structure of the first support system for some embodiments of the present invention;

[0053] Figure 4 For Figure 3 Schematic diagram of the A-A cross-section of

[0054] Figure 5 For Figure 3Schematic diagram of the B-B section;

[0055] Figure 6 Schematic diagram of the installation of anchor bolts in some embodiments of the present invention;

[0056] Figure 7 Schematic diagram of the overall structure of the second support system in some embodiments of the present invention;

[0057] Figure 8 Top view of the second support system in some embodiments of the present invention;

[0058] Figure 9 Schematic diagram of the overall structure of the spherical bearing in some embodiments of the present invention;

[0059] Figure 10 is Figure 9 side view of;

[0060] Figure 11 Schematic diagram of the installation of the temperature compensation and coordination system on the box girder in some embodiments of the present invention, where (a) is the transverse section of the box girder and (b) is the longitudinal section of the box girder;

[0061] Figure 12 Schematic diagram of the installation of the laser rangefinder in some embodiments of the present invention;

[0062] Figure 13 Schematic diagram of the installation of the automated machine vision intelligent measuring instrument in some embodiments of the present invention;

[0063] Figure 14 Schematic diagram of monitoring using the automated machine vision intelligent measuring instrument in some embodiments of the present invention;

[0064] Figure 15 Schematic diagram of the intelligent monitoring and automatic control process of the steel structure roof truss system with adaptive temperature regulation of the present invention.

[0065] Explanation of reference numerals:

[0066] 1 - Roof truss body; 101 - Steel roof truss; 1011 - Box girder; 102 - Steel roof truss enclosure structure;

[0067] 2 - First support system; 201 - Support base plate; 202 - Embedded anchor plate; 203 - Adjusting nut; 204 - Anchor rod; 205 - Shear resistance member; 206 - Grouting hole; 207 - Base plate;

[0068] 3 - Second support system, 301 - Spherical bearing; 3011 - Upper support plate assembly; 3012 - Ball crown liner; 3013 - Lower support plate assembly; 3014 - Plane friction plate; 3015 - Spherical friction plate; 302 - Embedded plate; 303 - Anchor bar;

[0069] 4 - Electric heat conduction device; 5 - Cooling holes; 6 - Anchor holes, 7 - Grooves; 8 - Laser rangefinder; 9 - Inclinometer; 10 - Automatic machine vision intelligent measuring instrument; 11 - Temperature monitoring device, 12 - Main structure.

[0070] In each of the drawings, the same or corresponding reference numerals denote the same or corresponding parts. Detailed implementation manners

[0071] In order to make the objectives, technical solutions and advantages of the embodiments of the present invention clearer and more understandable, the embodiments of the present invention will be further described in detail below with reference to the embodiments and the drawings. Herein, the illustrative embodiments of the present invention and their descriptions are used to explain the present invention, but do not limit the present invention.

[0072] In the present invention, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected to", "fixed" and other terms should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0073] It should be understood that the terms "include / comprise", "consist of" or any other variant are intended to cover non - exclusive inclusion, so that a product, device, process or method including a series of elements not only includes those elements, but also includes other elements that are not explicitly listed when necessary, or further includes elements inherent to such product, device, process or method. Without further limitation, the elements defined by the statement "include / comprise..." or "consist of..." do not exclude the existence of additional identical elements in the product, device, process or method including the said elements.

[0074] It should also be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device, component or structure referred to must have a specific orientation, be constructed or operated in a specific orientation, and cannot be understood as a limitation to the present invention.

[0075] Furthermore, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality of" means two or more unless otherwise specifically defined.

[0076] The implementation of the present invention will be described in detail below in conjunction with preferred embodiments.

[0077] As Figures 1 to 14 shown, the present invention provides a steel structure roof truss system with adaptive temperature regulation. The steel structure roof truss includes a roof truss body 1, a first support system 2, a second support system 3, a monitoring system, and a temperature compensation and coordination system. The steel structure roof truss realizes multiple benefits such as structural stability, temperature adaptability, real-time monitoring and control through the integration of advanced support systems, monitoring systems, and temperature compensation and coordination systems. These advantages together improve the performance and reliability of the steel structure roof truss, providing a strong guarantee for the safe and stable operation of the building.

[0078] Specifically, the roof truss body 1 is arranged on the main structure 12 and is jointly composed of a steel roof truss 101 and a steel roof truss enclosure structure 102. Among them, the steel roof truss 101 serves as the main load-bearing structure and is mainly composed of box girders 1011. Preferably, the cross-sectional form of the box girder 1011 is usually rectangular. When the box girder 1011 bears the load, it can evenly distribute the stress and reduce the phenomenon of local stress concentration, thereby improving the stability and load-bearing capacity of the entire roof truss structure.

[0079] The main structure 12 in the present invention is mainly a concrete wall or beam.

[0080] The steel roof truss enclosure structure 102 mainly serves to protect the steel roof truss 101 and prevent it from being eroded by the external environment. It is usually composed of components such as roof panels and purlins, and these components are closely connected to the steel roof truss 101 to form a complete roof truss system. The design of the enclosure structure needs to consider performance requirements such as waterproofing, windproofing, and heat preservation to ensure the comfort and safety of the internal space of the building.

[0081] In some embodiments, the roof panel of the steel roof truss enclosure structure 102 is an electrically heated glass panel, which is formed by pasting a transparent conductive film on the inner surface of tempered insulating glass. It is used to realize the electric heating function by pasting a transparent conductive film on the inner surface of the tempered insulating glass. The conductive film is connected to the power supply circuit, and after being energized, the glass can be heated to prevent the steel roof truss glass from condensing due to the temperature difference between indoors and outdoors, affecting the use function.

[0082] See Figure 2The first support system 2 is arranged at the four corners of the steel roof truss 101. This arrangement ensures that the steel structure roof truss is firmly supported at key positions. The four corners are key stress points in the roof truss structure. By arranging the first support system 2 with fixed connection here, it can ensure that the roof truss remains stable when subjected to various loads, effectively preventing structural deformation and damage.

[0083] See also Figures 3 to 5 The first support system 2 includes a support base plate 201 and a first embedded part. The support base plate 201 is connected to the bottom of the steel roof truss 101. The support base plate 201 is a rectangular plate. A plurality of anchor holes 6 are provided on the support base plate 201 at positions corresponding to the first embedded parts. The number and position of the anchor holes 6 are determined according to the actual project conditions and design requirements to ensure the reliability and stability of the connection. At the same time, the diameter and depth of the anchor holes 6 also need to be accurately calculated to ensure that the anchor can be firmly fixed in the embedded parts to prevent safety hazards caused by loosening or falling off.

[0084] The first embedded part includes an embedded anchor plate 202, an adjusting nut 203 and an anchor rod 204. The embedded anchor plate 202 is arranged below the support base plate 201, and is embedded in the main structure 12 in advance and fixedly connected to the main structure 12. The embedded anchor plate 202 is provided with a through anchor rod hole 6 at a position corresponding to the anchor rod hole 6 opened in the support base plate 201. The adjusting nut 203 is arranged at the bottom of the embedded anchor plate 202 and / or above the support base plate 201. One end of the anchor rod 204 passes through the main structure 12 and is connected and fixed to the main structure 12, and the other end passes through the anchor rod hole 6 of the embedded anchor plate 202 and the support base plate 201 and is fastened and fixed by the adjusting nut 203. This connection method can effectively resist tension and shear force, ensure that the connection will not loosen or fall off, thereby ensuring the stability and safety of the entire roof truss structure.

[0085] Preferably, the diameter of the anchor hole 6 opened on the support base plate 201 is larger than the diameter of the anchor hole 6 opened on the embedded anchor plate 202, which can effectively form a displacement space so that the roof truss body 1 can slide horizontally within a certain range to cooperate with the spherical support to meet the displacement deformation of the steel structure roof truss.

[0086] In some embodiments, see Figure 4 The first support system 2 further includes a shear member 205, which is welded and fixed to the bottom of the embedded anchor plate 202 to enhance the connection firmness between the embedded anchor plate 202 and the main structure 12. Preferably, the cross section of the shear member 205 is cross-shaped, and the cross-shaped shear member is symmetrically arranged on the embedded anchor plate 202.

[0087] The embedded anchor plate 202 is also provided with grouting holes 206. The arrangement of the grouting holes 206 enables convenient subsequent grouting work after the installation of the embedded anchor plate 202. High-strength grouting materials, such as epoxy resin or cement slurry, can be injected through the grouting holes 206 to fill the gap between the embedded anchor plate 202 and the concrete, ensuring the dense pouring of the concrete under the embedded anchor plate 202. Preferably, two grouting holes 206 are provided on the embedded anchor plate 202, symmetrically arranged on the left and right sides of the cruciform shear member.

[0088] In some embodiments, the first bearing system 2 further includes a friction plate (not shown in the figure). The friction plate is arranged between the bearing base plate 201 and the embedded anchor plate 202, and the friction plate is adhesively connected to the bearing base plate 201 and the embedded anchor plate 202. The design of the friction plate facilitates the relative sliding between the upper truss body 1 and the lower concrete main structure 12. Preferably, the friction plate is a polytetrafluoroethylene plate or other materials with a relatively small coefficient of friction.

[0089] In some embodiments, the first bearing system 2 further includes a backing plate 207. The backing plate 207 is arranged between the bearing base plate 201 and the adjusting nut 203. As an additional support layer, the backing plate 207 can disperse and bear the pressure from the adjusting nut 203 and the bearing base plate 201, thereby enhancing the stability of the entire connection structure, which helps to reduce structural deformation or damage caused by uneven or excessive pressure.

[0090] In a preferred embodiment, referring to Figure 6 , the anchor rod 204 can also be replaced by an anchor bolt. Corresponding anchor bolt holes are provided on the bearing base plate 201 and the embedded anchor plate 202. One end of the anchor bolt passes through the main structure 12 and is fixedly connected to the main structure 12, and the other end passes through the anchor bolt holes of the embedded anchor plate 202 and the bearing base plate 201 and is fastened and fixed by the adjusting nut 203.

[0091] Continuing to refer to Figure 2 , the second bearing system 3 is arranged in the middle of the four sides of the steel truss 101, between two adjacent first bearing systems 2. Such a design allows the steel truss 101 to generate a certain sliding displacement when the temperature changes. Since the steel truss 101 is relatively sensitive to temperature changes, when the ambient temperature rises or falls, the steel structure may expand and contract thermally. By setting the second bearing system 3 with a sliding connection, the truss body 1 can be allowed to generate an appropriate displacement when the temperature changes, thereby reducing the influence of temperature stress on the structure and improving the durability and service life of the truss body 1.

[0092] In the present invention, due to the sliding connection characteristics of the second bearing system 3, the truss body 1 can self-adjust to a certain extent to adapt to temperature changes. This self-adjusting ability helps to reduce structural stress concentration and deformation caused by temperature changes, maintaining the stability and safety of the truss structure.

[0093] See Figures 7 to 10 , the second support system 3 includes a spherical bearing 301 and a second embedded part. The spherical bearing 301 is arranged below the steel roof truss 101. The top of the spherical bearing 301 is fixedly welded to the box girder 1011, and the bottom is fixedly welded to the second embedded part. The design of the spherical bearing 301 allows it to have a certain rotation and sliding ability in multiple directions, and is suitable for adapting to the deformation of the steel structure roof truss caused by factors such as temperature change and wind force.

[0094] The second embedded part includes an embedded plate 302 and anchor bars 303. The embedded plate 302 is embedded in the main structure 12 and fixedly connected to the main structure 12. The upper surface of the embedded plate 302 is fixedly welded to the bottom of the spherical bearing 301. The anchor bars 303 are embedded in the main structure 12, and the top ends thereof are fixedly welded to the lower surface of the embedded plate 302. The existence of the anchor bars 303 not only enhances the connection strength between the embedded plate 302 and the main structure 12, but also can resist the action of external forces such as earthquakes and wind forces to a certain extent. When external forces such as earthquakes or wind forces act, the anchor bars 303 can effectively disperse the external forces into the main structure 12, reducing the impact and damage to the embedded plate 302 and the spherical bearing 301.

[0095] In some embodiments, see Figure 9 , Figure 10 , the spherical bearing 301 includes an upper bearing plate assembly 3011, a spherical crown liner 3012, a lower bearing plate assembly 3013, a planar friction plate 3014 and a spherical friction plate 3015. A groove 7 is provided below the upper bearing plate assembly 3011 for connecting the lower bearing plate assembly 3013; the spherical crown liner 3012 is arranged in the groove 7. The spherical crown liner 3012 has an upper plane and a lower spherical surface, and the upper plane is matched with the lower surface of the groove 7; the top of the lower bearing plate assembly 3013 is arranged in the groove 7, and an arc surface recessed downward is provided at the top thereof, and the arc surface is matched with the lower spherical surface. A gap is reserved between the outer periphery of the top of the lower bearing plate assembly 3013 and the groove 7 to meet the displacement and sliding of the steel structure roof truss in a limited space; the planar friction plate 3014 is arranged between the lower surface of the groove 7 and the upper plane, and the planar friction plate 3014 is adhesively connected to the upper bearing plate assembly 3011 and the spherical crown liner 3012; the spherical friction plate 3015 is arranged between the arc surface and the lower spherical surface, and the spherical friction plate 3015 is adhesively connected to the spherical crown liner 3012 and the lower bearing plate assembly 3013.

[0096] In the present invention, the planar friction plate 3014 and the spherical friction plate 3015 are both ultra-high molecular weight polyethylene, and the upper support plate assembly 3011, the spherical crown liner 3012 and the lower support plate assembly 3013 are made of steel. Each structural dimension is determined according to the design value of the vertical pressure, the design value of the horizontal shear force, the design value of the rotation angle and the set value of the sliding displacement. The spherical crown liner 3012 is arranged between the upper and lower support plate assemblies, and the special spherical arc surface design can meet the rotation of a certain angle of the steel structure roof truss.

[0097] In some embodiments, continue to refer to Figure 2 , the first support system 2 is also arranged at the 1 / 4 and 3 / 4 positions on the four sides of the steel roof truss 101, that is, in the middle of the first support system 2 arranged along the corners of the steel roof truss 101 and the second support system 3 arranged in the middle of the four sides of the steel roof truss 101, so as to further stably support the roof truss body 1.

[0098] In some embodiments, the design elevation of the second support system 3 is lower than that of the first support system 2. Since the spherical bearing 301 has a relatively complex structure and a relatively high height, it is necessary to reserve a groove on the main structure 12 for later installation, while the first support system 2 does not need to consider reserving a groove.

[0099] The monitoring system of the present invention is used to monitor the deformation amount of the roof truss body 1 under different environmental temperatures. Refer to Figure 1 and Figures 12 to 14 , the monitoring system includes a deformation monitoring component and a temperature monitoring device 11, wherein the deformation monitoring component is coupled to at least one of the roof truss body 1, the first support system 2 and the second support system 3 for monitoring the deformation amount of the roof truss body 1; the temperature monitoring device 11 is installed on the roof truss body 1 for monitoring the current temperature condition of the roof truss body 1.

[0100] In some embodiments, the deformation monitoring component includes a laser rangefinder 8, which is installed on the steel roof truss 101 corresponding to the positions of the first support system 2 and the second support system 3 for monitoring the deformation displacement of the steel roof truss 101. Preferably, the laser rangefinder 8 is a high-precision laser ranging displacement sensor. High-precision laser ranging requires close observation of the main deformation points of the steel beam. Refer to Figure 12 , the high-precision laser ranging displacement sensor is arranged at the connection node of the box girder 1011, such as the intersection part of the steel roof truss 101 and the steel roof truss enclosure structure 102. By monitoring the deformation displacement of the steel roof truss 101 in real time, potential safety hazards can be found in time and effective measures can be taken for treatment to ensure the safe and stable operation of the steel structure roof truss.

[0101] In some embodiments, the deformation monitoring component includes an inclinometer 9, which is installed on the second support system 3. In the present invention, since the second support system 3 can be regarded as a "point" and is more sensitive to angle changes, while the first support system 2 is mainly an embedded fixing part and cannot be used to measure angle changes, and the steel beam is mainly for deflection changes and only has up and down changes and cannot measure horizontal changes. Preferably, the inclinometer 9 is a strong magnetic adsorption inclinometer. Refer to Figure 9 , the strong magnetic adsorption inclinometer is arranged below the upper support plate assembly 3011 and is used to monitor the inclination angle of the roof truss body 1. The strong magnetic adsorption inclinometer uses its strong magnetic adsorption force to easily adhere to the surface of the upper support plate assembly 3011 without complex fixing devices, which greatly simplifies the installation process and improves work efficiency.

[0102] In some embodiments, the deformation monitoring component includes an automated machine vision intelligent measuring instrument 10, refer to Figure 13 , 14 , the automated machine vision intelligent measuring instrument 10 is installed directly below the roof truss, so that the view is wide and it is convenient to continuously and directly observe each automated monitoring point on the roof truss body 1, monitor the overall deformation, and count the overall deformation situation. During the monitoring process, the automated machine vision intelligent measuring instrument 10 uses advanced machine vision technology to continuously photograph the roof truss body 1, obtains a large amount of image data, and through analyzing and processing these image data, the deformation information of the roof truss body 1, such as displacement, strain, etc., can be extracted. These information can reflect the deformation state of the roof truss in real time and provide an important basis for the safety assessment and maintenance of the structure.

[0103] In the present invention, the combined use of the laser rangefinder 8, the inclinometer 9 and the automated machine vision intelligent measuring instrument 10 forms a comprehensive, efficient and accurate monitoring system. Among them, the laser rangefinder 8 and the inclinometer 9 are mainly used to test data and give early warnings. When the set warning value is exceeded, an alarm will be given. The automated vision intelligent measuring instrument is mainly used for data collection, comparison and analysis.

[0104] Refer to Figure 1 , the temperature monitoring device 11 is installed at the intersection position of the steel roof truss 101, which is the intersection part of the steel roof truss 101 and the steel roof truss enclosure structure 102. By installing the temperature monitoring device 11 here and reading the temperature data by being in full contact with the steel structure, the temperature change information of the roof truss body can be obtained most directly and accurately.

[0105] In some embodiments, the temperature monitoring device 11 is an intelligent temperature sensor.

[0106] The temperature compensation and coordination system of the present invention is coupled to the monitoring system, and is used to receive the deformation amounts of the roof truss body 1 at different ambient temperatures, and perform temperature compensation on the box girder 1011 to control the expansion and contraction deformation of the steel roof truss 101 at different temperatures. Refer to Figure 11 In (a) and (b) of Figure 11 , the temperature compensation and coordination system includes an electro-thermal conduction device 4, which is circumferentially laid on the inner wall of the box girder 1011 (compared with heating by a heater, it can effectively avoid other phenomena of pre-cooling condensation and dripping). When the temperature compensation and coordination system receives the contraction deformation amount of the roof truss body 1 in a low-temperature environment transmitted by the monitoring system, that is, when the ambient temperature drops and causes the steel roof truss 101 to contract and deform, the electro-thermal conduction device 4 can heat up the box girder 1011, so as to effectively offset the contraction effect caused by low temperature and maintain the stability and integrity of the structure. Preferably, the heating power of the upper inner wall of the box girder is greater than that of the other three sides to perform compensation when the contraction amount of the steel roof truss 101 is too large in the cold season (low temperature).

[0107] In a specific embodiment, the electro-thermal conduction device 4 includes a heat conduction element, an electro-thermal element, and a fixing device. The heat conduction element is the key part responsible for heat transfer in the electro-thermal conduction device 4. It is usually made of a material with excellent heat conduction performance, such as copper, aluminum, or heat-conducting silica gel, etc., and is made into heat-conducting sheets and laid on the inner wall of the box girder 1011. The shape and structure of the heat conduction element can be designed according to the internal layout and heat demand of the box girder 1011 to ensure that heat can be efficiently and evenly transferred to the area that needs to be heated. The electro-thermal element is thermally coupled to the heat conduction element and is used to generate heat by passing an electric current to provide the required heat energy for the box girder 1011. It usually adopts forms such as resistance wires, electro-thermal films, or electro-thermal tubes. The fixing device includes at least one of a bracket, a buckle, and an adhesive, and is used to stably fix the heat conduction element and the electro-thermal element on the box girder 1011. The design of the fixing device should consider the structural characteristics and installation space of the box girder 1011 to ensure that the electro-thermal conduction device can be firmly and reliably installed in the predetermined position, and at the same time facilitate future maintenance and replacement.

[0108] In some embodiments, continue to refer to Figure 11 In (a) and (b) of Figure 11 , the temperature compensation and coordination system further includes a cooling system. Cooling holes 5 are opened on the side walls of the box girder 1011, and the cooling holes 5 are communicated with the cooling system. For example, they are communicated with an indoor central air-conditioning unit (central air-conditioning cooling system) through a soft refrigerant pipeline. By introducing cold air or coolant, etc., the temperature of the box girder 1011 is reduced to prevent the steel roof truss 101 from expanding and deforming. When the cooling holes 5 receive the expansion deformation amount of the roof truss body 1 in a high-temperature environment transmitted by the monitoring system, that is, when the ambient temperature rises and causes the steel roof truss 101 to expand and deform, the box girder 1011 can be cooled, so as to effectively offset the expansion effect caused by high temperature and maintain the stability and integrity of the structure.

[0109] In this embodiment, the deformation amount of the steel roof truss 101 caused by temperature is calculated in advance through finite element simulation, and the surface temperature of the steel roof truss 101 is adjusted in combination with the data of the monitoring module (the deformation amount of the roof truss body monitored by the monitoring system) to ensure that the deformation caused by the thermal expansion and contraction of the steel roof truss 101 is within the allowable stroke of the support.

[0110] In the present invention, the temperature compensation and coordination system can receive the deformation amounts of the roof truss body 1 at different temperatures transmitted by the monitoring system, and control the electro-thermal conduction device 4 and the cooling holes 5 to perform heating or cooling operations on the box girder 1011, so as to achieve comprehensive control of the temperature of the box girder 1011. Regardless of how the external environment changes, by adjusting the temperature in a timely manner, the electro-thermal conduction device 4 and the cooling holes 5 can reduce the structural stress concentration and damage caused by temperature changes, avoid the deformation of the steel roof truss 101 at extreme temperatures, help reduce potential safety hazards, and improve the safety of the overall structure.

[0111] In the present invention, when the temperature change causes the roof truss to deform, the first support system and the second support system, as the support parts of the roof truss structure, will first perform self-adjustment. Secondly, the monitoring system obtains the deformation amount of the roof truss body and the temperature change data in real time through the deformation monitoring component and the temperature monitoring device. The temperature compensation and coordination system precisely controls the electro-thermal conduction device and the cooling holes according to the deformation monitoring data provided by the monitoring system. In a low-temperature environment, when the monitoring system detects that the roof truss body shows shrinkage deformation, the temperature compensation and coordination system will start the electro-thermal conduction device to perform a heating operation on the box girder to relieve the shrinkage deformation. In a high-temperature environment, when the monitoring system detects that the roof truss body has expansion deformation, the temperature compensation and coordination system will cooperate with the cooling system through the cooling holes to perform a cooling treatment on the box girder to control the expansion deformation.

[0112] The self-adaptive temperature-adjusting steel structure roof truss system proposed by the present invention may further include a monitoring and control platform (not shown in the figure), which is coupled to the temperature compensation and coordination system and the monitoring system. A temperature deformation threshold is provided on the monitoring and control platform, which is suitable for judging whether the deformation monitoring data of the deformation monitoring component is within the allowable range at high or low temperatures, so as to control the temperature compensation and coordination system to perform temperature compensation when the deformation monitoring data exceeds the temperature deformation threshold.

[0113] The monitoring and control platform proposed by the present invention cuts in each deformation monitoring data through the module port. When the displacement and inclination angle of the roof truss body are within the allowable range of the temperature deformation threshold, no heating or cooling measures need to be taken; when exceeding the allowable value of the temperature deformation threshold, the monitoring and control platform controls the temperature compensation and coordination system to turn on the heating or cooling function (the power supply switch of the electrically heated glass is controlled by an intelligent temperature sensor) to change the local temperature of the steel structure, thereby reducing or offsetting the deformation; when the deformation value is still higher than the threshold after adopting the temperature control measures, an automatic alarm will be issued to notify the user unit and the construction unit to conduct on-site evaluation. The design of this function aims to relieve the deformation pressure of the roof truss body by adjusting the ambient temperature and prevent it from further exceeding the safety range. This timely response and intervention can effectively prevent structural damage and safety accidents.

[0114] It should be understood that the temperature deformation threshold is set according to factors such as the design parameters, material properties, and actual operating environment of the roof truss body, and is used to judge whether the deformation of the roof truss body at a specific temperature is within the allowable range.

[0115] The monitoring and control platform is a complex system integrating multiple functions and components such as data acquisition, processing, analysis, control execution, and user interaction. It realizes effective monitoring and timely intervention of deformation by real-time monitoring and analyzing the status information of the roof truss body, ensuring the safe and stable operation of the structure.

[0116] See Figure 15 , the intelligent monitoring and automatic control process of the steel structure roof truss system with adaptive temperature regulation includes structural deformation, automatic monitoring, data warning, and intelligent regulation. Specifically:

[0117] Structural deformation is the starting point of the flow chart. When the steel roof truss is deformed by temperature, the first support system absorbs and relieves part of the deformation of the steel roof truss through its reserved displacement space. The design of this displacement space allows the structure to have a certain degree of freedom during deformation, thus avoiding excessive stress concentration and damage. The spherical bearing in the second support system also plays a key role. Due to its special shape and design, the spherical bearing can generate displacement and rotation when subjected to external forces. This displacement and rotation not only help to release the stress in the steel roof truss but also enable self-regulation of deformation.

[0118] Generally speaking, through the displacement space of the first support system and the displacement and rotation of the spherical bearing of the second support system, the steel roof truss can achieve stress release and self-regulation of deformation.

[0119] Next is the automatic monitoring link. This link mainly measures the deformation of the box girder based on a laser rangefinder and an inclinometer. The monitoring and control platform will receive the deformation and displacement data of the box girder from the laser rangefinder and the inclinometer, and compare these data with the pre-set temperature deformation threshold.

[0120] Then there is data warning and intelligent adjustment. When the deformation monitoring data exceeds the temperature deformation threshold, the monitoring and control platform will automatically trigger the warning mechanism. The monitoring and control platform will transmit the information to the temperature adjustment calculation module, the temperature adjustment calculation module will transmit the information to the temperature compensation coordination system, and the temperature compensation coordination system will transmit the information to the temperature adjustment device (electric heat conduction device and cooling system). The temperature adjustment device will heat or cool the box girder based on the current information to control the deformation generated by the steel structure, and then continue to measure the deformation of the box girder based on the laser rangefinder and inclinometer. When the deformation monitoring data does not exceed the temperature deformation threshold, continue to measure the deformation of the box girder based on the laser rangefinder and inclinometer.

[0121] The steel structure truss proposed by the present invention first performs stress release and adjustment based on the first support system and the second support system, and then cyclically monitors the deformation of the steel truss based on the temperature compensation coordination system, the monitoring system and the monitoring and control platform. Through continuous monitoring and intelligent adjustment of the deformation of the steel truss, the system can timely discover and handle potential deformation problems, thereby extending the service life of the steel structure and reducing the maintenance cost.

[0122] It is easy for those skilled in the art to understand that, on the premise of no conflict, the above preferred solutions can be freely combined and superimposed.

[0123] The above is only the preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A steel structure roof truss system with adaptive temperature regulation, characterized in that: include: The roof frame body is arranged on the main structure, and comprises a steel roof frame and a steel roof frame enclosure structure, wherein the steel roof frame comprises a box beam; A first support system is arranged at the four corners of the steel roof frame and is used to fix the steel roof frame and the main structure; A second support system is arranged in the middle of the four sides of the steel roof frame and is used for slidingly connecting the steel roof frame and the main structure; A monitoring system, comprising a deformation monitoring component and a temperature monitoring device, wherein the deformation monitoring component is coupled to at least one of the roof truss body, the first support system and the second support system, and is used to monitor the deformation of the roof truss body; and the temperature monitoring device is installed on the roof truss body, and is used to monitor the temperature change of the roof truss body; A temperature compensation coordination system is coupled to the monitoring system and receives the monitored deformation of the roof truss body, comprising an electric heat conduction device and a cooling system; the electric heat conduction device is circumferentially laid on the inner wall of the box beam, and is suitable for heating the box beam when receiving the contraction deformation of the roof truss body transmitted by the monitoring system; a cooling hole is opened on the side wall of the box beam, and the cooling system is connected to the cooling hole, and is suitable for cooling the box beam when receiving the expansion deformation of the roof truss body transmitted by the monitoring system; in The first support system comprises: A support base plate is connected to the bottom of the steel roof frame, and a plurality of anchor holes are formed on the support base plate; The first embedded part includes an embedded anchor plate, which is arranged below the support base plate and embedded in the main structure and fixedly connected to the main structure, and the embedded anchor plate is provided with a through anchor hole corresponding to the anchor hole opened in the support base plate; and The diameter of the anchor hole on the support bottom plate is larger than the diameter of the anchor hole on the embedded anchor plate, so as to form a displacement space to limit the horizontal sliding of the roof truss body within a predetermined range; and The deformation monitoring component comprises: A laser rangefinder is installed on the steel roof truss corresponding to the positions of the first support system and the second support system to monitor the deformation displacement of the steel roof truss; An inclinometer is installed on the second support system and is used to monitor the inclination angle of the roof truss body.

2. The self-adaptive temperature-adjustable steel structure roof truss system according to claim 1, characterized in that: The first embedded part also includes an adjusting nut and an anchor rod, wherein the adjusting nut is arranged at the bottom of the embedded anchor plate and / or above the support base plate, one end of the anchor rod passes through the main structure and is connected and fixed to the main structure, and the other end passes through the anchor rod holes of the embedded anchor plate and the support base plate and is fixed by the adjusting nut.

3. The self-adaptive temperature-adjustable steel structure roof truss system according to claim 1, characterized in that: A shear-resistant piece is welded at the bottom of the embedded anchor plate, and the cross section of the shear-resistant piece is cross-shaped.

4. The self-adaptive temperature regulating steel structure roof truss system according to claim 1, characterized in that: The embedded anchor plate is provided with grouting holes for pouring concrete into the main structure.

5. The self-adaptive temperature-adjustable steel structure roof truss system according to claim 1, characterized in that: The first support system further includes a friction plate, which is disposed between the support base plate and the embedded anchor plate and is adhesively connected to the support base plate and the embedded anchor plate.

6. The self-adaptive temperature regulating steel structure roof truss system according to claim 1, characterized in that: The second support system comprises: A spherical support is arranged below the steel roof truss, and the top of the spherical support is welded and fixed to the box beam; The second embedded part includes an embedded plate and anchor bars, wherein the embedded plate is embedded in the main structure and fixedly connected to the main structure, the upper surface of the embedded plate is welded and fixed to the bottom of the spherical support, and the anchor bars are embedded in the main structure, and the top end of the anchor bars is welded and fixed to the lower surface of the embedded plate.

7. The self-adaptive temperature-adjustable steel structure roof truss system according to claim 6, characterized in that: The spherical support comprises: An upper support plate assembly, with a groove disposed below the upper support plate assembly; A spherical cap lining plate is arranged in the groove, the spherical cap lining plate has an upper plane and a lower spherical surface, and the upper plane matches the lower surface of the groove; A lower support plate assembly, the top of which is arranged below the spherical crown lining plate in the groove, and the top is provided with a downwardly concave arc surface, which matches with the lower spherical surface, and a gap is reserved between the outer periphery of the top of the lower support plate assembly and the groove; A plane friction plate, disposed between the lower surface of the groove and the upper plane, and bonded to the upper support plate assembly and the ball crown lining plate; The spherical friction plate is arranged between the arc surface and the lower spherical surface, and is bonded and connected to the spherical crown lining plate and the lower support plate assembly.

8. The self-adaptive temperature-adjustable steel structure roof truss system according to claim 1, characterized in that: The steel roof frame enclosure structure is an electrically heated glass plate, which is formed by laying a transparent conductive film along the inner surface of tempered insulating glass.

9. The self-adaptive temperature-adjustable steel structure roof truss system according to claim 1, characterized in that: The electrical heat conduction device comprises: A heat-conducting element, made of at least one of copper, aluminum or heat-conducting silica gel, is laid on the inner wall of the box beam to transfer heat evenly to the box beam; an electric heating element, thermally coupled to the heat-conducting element, for generating heat by heating with electric current; The fixing device comprises at least one of a bracket, a buckle and an adhesive, and is used for stably fixing the heat-conducting element and the electric heating element on the box beam.

10. The self-adaptive temperature-adjustable steel structure roof truss system according to claim 1, characterized in that: The deformation monitoring component also includes: The automated machine vision intelligent measuring instrument is installed directly below the roof truss to monitor the overall deformation of the roof truss body.

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