Intelligently monitored silo roof assembled spatial steel truss construction support system

Abstract

The present invention relates to an assembled spatial steel truss construction support system for a silo roof that can be intelligently monitored, comprising: a radiating spatial steel truss, a central ring frame, annular supports and cables; the radiating spatial steel truss is composed of a plurality of connecting frames; the central ring frame and each radiating spatial steel truss are connected to form a whole; tension and pressure sensors are installed at the connection between the connecting frames of the radiating spatial steel trusses, which can intelligently monitor the stress condition of the spatial steel truss support system. The present invention carries out an assembled design for the spatial steel truss support system, which can be applied in silo projects of different diameters through different module combinations, has a simple structure, and is fast and convenient to construct, greatly improving the utilization rate and versatility of the spatial steel truss support system, and can monitor the safety condition of the system through tension and pressure sensors, and has broad prospects for engineering applications.

Description

Technical Field

[0001] The present invention relates to an assembled spatial steel truss construction support system for a silo roof capable of intelligent monitoring, and in particular to a spatial steel truss support system capable of intelligent monitoring and being applied to silo projects of different diameters through mutual combination between modules. The system is used for silo roof construction and belongs to the field of construction engineering. Background Art

[0002] Silo refers to a warehouse for storing bulk materials. The plane shapes of silos include square, rectangular, polygonal and circular. The circular silo has reasonable wall stress and economical materials, so it is the most widely used. For example, the combined silo structure disclosed in the Chinese invention patent application with publication number CN111593764A and the hanging silo disclosed in the utility model patent with publication number CN2262797Y.

[0003] As silos develop towards higher heights and larger diameters, people have proposed various forms of silo roof support systems. However, most silo roof support systems require the assembly of various rods at the bottom of the silo, which is cumbersome to construct and can only be applied to silo projects of a specific diameter. The structural universality is low, and during construction, the stress condition of the silo roof support system is unknown, which poses certain safety risks in the project. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a silo roof assembled spatial steel truss construction support system capable of intelligent monitoring.

[0005] To solve the above problems, the technical solution adopted by the present invention is:

[0006] An intelligently monitored silo roof assembled spatial steel truss construction support system, comprising:

[0007] Center ring frame;

[0008] A plurality of radiating space steel trusses, wherein the plurality of radiating space steel trusses are evenly distributed along the circumferential direction of the central ring frame and are arranged in a radial shape, and the first end of the radiating space steel trusses is detachably connected to the central ring frame; the radiating space steel trusses are an even number, and cables are connected between two radiating space steel trusses in the opposite position, and annular supports are arranged between the plurality of radiating space steel trusses;

[0009] A plurality of truss support seats, fixedly arranged on the silo wall at the top of the silo, for supporting the second end of the radiation space steel truss, the truss support seat being detachably connected to the second end of the radiation space steel truss;

[0010] The intelligent monitoring device is used to obtain the tension and pressure values ​​at one or more internal nodes on the radiation space steel trusses and / or at the connection nodes between the radiation space steel trusses and the central ring frame.

[0011] As an embodiment of the present invention, the center ring frame includes a plurality of center ring modules in a circular array, the center ring module includes a rectangular inner frame and an outer frame, the four corners of the inner frame and the outer frame are welded and connected by chord rods, the inner frame and the outer frame each include two sections of ring beams and two columns, the four nodes of the inner frame are welded and connected by hollow balls, a ring beam is arranged between the two columns of the outer frame through a hollow ball connection, and a web is arranged between the hollow ball of the inner frame and the hollow ball of the outer frame.

[0012] As an implementation mode of the present invention, the inner frames of two adjacent center ring modules are fixedly connected via the shared hollow ball, and the outer frames are fixedly connected via a ring beam.

[0013] As an embodiment of the present invention, a plurality of outwardly radiating center ring outriggers are fixedly provided on the columns of the outer frame, and the center ring outriggers are used to be connected to the first end of the radiating space steel truss.

[0014] As an embodiment of the present invention, the radiation space steel truss is composed of a plurality of connecting frames, and adjacent connecting frames are detachably connected via connecting members; the connecting frames include support sections, standard sections and connecting sections that are connected in sequence.

[0015] As an embodiment of the present invention, among the plurality of radiation space steel trusses, at least some of the connecting components of the radiation space steel trusses include tension and pressure sensors, and the intelligent monitoring device obtains the tension and pressure values ​​at the corresponding positions of the radiation space steel trusses through the tension and pressure sensors.

[0016] As an embodiment of the present invention, a plurality of groups of outwardly radiating center ring cantilever rods are fixedly arranged on the outside of the center ring frame, each group of center ring cantilever rods corresponds to a radiating space steel truss, a plurality of connecting section cantilever rods are fixedly arranged at one end of the connecting section, the connecting section cantilever rods are detachably connected to the center ring cantilever rods via connecting members, and a connecting support for matching with the truss support seat is fixedly arranged at one end of the support section.

[0017] As an embodiment of the present invention, the connecting member includes a flange and a spoke-type tension and pressure sensor, and the flange and the spoke-type tension and pressure sensor are fixedly connected by bolts.

[0018] As an embodiment of the present invention, the connecting joint is a wedge-shaped structure with one end narrow and the other end wide, the narrow end of which is the first end of the radiation space steel truss, and the connecting joint extension rod is fixedly arranged at the narrow end.

[0019] As an embodiment of the present invention, the four nodes at the lower end of the support section are welded and connected through the hollow balls of the support section, the lower end of the support section is the second end of the radiation space steel truss, and the two hollow balls of the support section on the upper side of the lower end of the support section are fixed with connecting supports, and the two hollow balls of the support section on the lower side are fixed with connecting ear plates, and the ends of the cables are connected to the connecting ear plates.

[0020] The beneficial effects of adopting the above technical solution are:

[0021] The silo roof assembled space steel truss construction support system with intelligent monitoring provided by the present invention has a simple overall structure, is easy to install, and has strong overall structural stability. It can be applied to assembled space steel truss support systems of silos with different diameters through the combination of modules, and can be intelligently monitored through tension and pressure sensors to ensure that the space steel truss support system is in a safe state. The circumferential support connects adjacent radial space steel trusses to increase the overall stability of the support system; the cable connects the radial space steel trusses in opposite positions. When the entire support system and the radial space steel trusses bear the vertical load, the cable bears the resulting horizontal tension in the radial direction.

[0022] The present invention adopts an assembled design for the spatial steel truss support system, which can be applied in silo projects with different diameters through different module combinations. It has a simple structure and is fast and convenient to construct, which greatly improves the utilization rate and versatility of the spatial steel truss support system. The safety status of the system can be monitored through tension and pressure sensors, and the engineering application prospect is broad. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional structural schematic diagram of the space steel truss in the present invention.

[0024] Figure 2 It is a schematic diagram of the top view structure of the space steel truss in the present invention.

[0025] Figure 3 It is a side structural schematic diagram of the present invention.

[0026] Figure 4 It is a schematic diagram of the support structure between the radiation space steel truss and the warehouse wall.

[0027] Figure 5 It is a schematic diagram of the three-dimensional structure of the central ring frame.

[0028] Figure 6 It is a structural schematic diagram of the central ring module of the central ring frame.

[0029] Figure 7 It is a partial structural diagram of the central ring frame.

[0030] Figure 8 yes Figure 6 A side view structural diagram of the center ring module is shown.

[0031] Fig. 9 It is a structural diagram of the connecting section.

[0032] Fig.10 It is a structural diagram of the support section.

[0033] Fig.11 It is a structural diagram of standard section A.

[0034] Fig.12 It is a structural diagram of standard section B.

[0035] Fig.13 It is a structural diagram of connecting components and intelligent monitoring equipment.

[0036] Among them: 1 center ring frame, 2 cables, 3 radiation space steel truss, 4 annular support, 5 warehouse wall, 6 embedded parts, 7 brackets, 8 support sections, 9 connection sections, 10 standard sections A, 11 standard sections B, 12 center ring extension rods, 12-1 center ring extension rods A, 12-2 center ring extension rods B, 12-3 center ring extension rods C, 12-4 center ring extension rods D, 13 hollow balls, 14 upper chord rods, 15 columns, 16 web members, 17 ring beams, 18 standard sections Lan, 19 tension pressure sensor, 20 connecting support, 21 support section hollow ball, 22 lower chord, 23 radiation space steel truss chord, 24 radiation space steel truss vertical web, 25 radiation space steel truss diagonal web, 26 connecting section extension rod, 26-1 connecting section extension rod A, 26-2 connecting section extension rod B, 26-3 connecting section extension rod C, 26-4 connecting section extension rod D, 27 connecting ear plate, 28 bolt head, 29 control mechanism, 30 bolt. DETAILED DESCRIPTION

[0037] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention is clearly and completely described below in conjunction with specific embodiments.

[0038] like Figures 1 to 13 The illustrated system is a silo roof assembled spatial steel truss construction support system capable of intelligent monitoring, which includes a central ring frame 1, a plurality of radiating spatial steel trusses 3, a plurality of truss support seats fixedly arranged on the silo wall 5 on the top of the silo for supporting the radiating spatial steel trusses 3, and intelligent monitoring equipment.

[0039] like Figure 2 and Figure 5As shown, the central ring frame 1 is in a circular ring shape as a whole. A plurality of the radiating space steel trusses 3 are evenly distributed along the circumferential direction of the central ring frame 1 and are radially arranged to be tilted downward, and the inclination angle of the radiating space steel trusses 3 is 37°.

[0040] The first end of the radiation space steel truss 3 is detachably connected to the central ring frame 1; the radiation space steel truss 3 is an even number of trusses, such as Figure 1 and Figure 3 As shown, a cable 2 is connected between two radiant space steel trusses 3 in the aligned position, that is, the central angle between the two radiant space steel trusses 3 connected at both ends of a cable is 180 degrees.

[0041] like Figure 2 As shown, a circumferential support 4 is provided between the plurality of the radiation space steel trusses 3. An arc-shaped circumferential support 4 is provided between two adjacent radiation space steel trusses 3, and both ends of the circumferential support 4 are connected to the radiation space steel trusses 3 through connectors, and a plurality of circumferential supports 4 on the same horizontal plane are connected end to end to form a circular structure. The circumferential support 4 connects the plurality of radiation space steel trusses 3 to form a whole, making the support system more stable.

[0042] like Figure 3 and Figure 4 As shown, a plurality of truss support seats are fixedly arranged on the silo wall 5 at the top of the silo, which are used to support the second end of the radiation space steel truss 3, and the truss support seat is detachably connected to the second end of the radiation space steel truss 3; the truss support seat includes an embedded part 6 arranged in the silo wall 5 and a corbel 7 welded and fixed to the embedded part 6, and the second end of the radiation space steel truss 3 is connected to the corbel 7 by bolts.

[0043] The cable 2 connects the two radiating space steel trusses 3 in the counter-position. When the entire support system and the radiating space steel trusses 3 bear the vertical load, the cable 2 bears the radial horizontal tension generated thereby, which can effectively reduce the radial sliding at the connection node between the second end of the radiating space steel truss 3 and the corbel 7.

[0044] The intelligent monitoring device is used to obtain the tension and pressure values ​​at one or more internal nodes on the radiation space steel trusses 3 and / or the connection nodes between the radiation space steel trusses 3 and the central ring frame 1, and the intelligent monitoring device transmits the obtained tension and pressure values ​​to the monitoring and early warning system, which analyzes the obtained values. When the tension and pressure value at any node exceeds a preset tension and pressure threshold, the monitoring and early warning system issues an alarm.

[0045] like Figures 5 to 8As shown, the center ring frame 1 includes a plurality of center ring modules in a circular array, and the center ring module includes a rectangular inner frame and a rectangular outer frame. The inner frame and the outer frame each include two sections of ring beams 17 and two columns 15. The four nodes of the inner frame are welded and connected by hollow balls 13, and the four corners of the inner frame and the outer frame are welded and connected by chord rods, and the chord rods include an upper chord rod 14 and a lower chord rod 22.

[0046] Specifically, the two upper corners of the inner frame and the rectangular outer frame are welded together via an upper chord 14 , and the two lower corners are welded together via a lower chord 22 .

[0047] like Figure 6 As shown, hollow balls 13 are welded in the middle of the two upright columns 15 of the outer frame, a ring beam 17 is welded between the two hollow balls 13, and a web member 16 is provided between the hollow balls 13 of the inner frame and the hollow balls 13 of the outer frame.

[0048] like Figure 5 and Figure 7 As shown, the inner frames of two adjacent center ring modules are fixedly connected by the common hollow ball 13, and the outer frames are fixedly connected by a plurality of ring beams 17. The ring beam 17 is connected to the hollow ball 13 of the outer frame and the ring beam 17 is connected to the upper chord 14 and the lower chord 22 by welding.

[0049] A plurality of outwardly radiating center ring outriggers 12 are fixedly arranged on the two uprights 15 of the outer frame, and the center ring outriggers 12 are used to be connected to the first end of the radiating space steel truss 3. Figures 5 to 7As shown, a total of eight center ring cantilever rods 12 are arranged on the outer frame of each center ring module, and four center ring cantilever rods 12 are respectively arranged on the columns 15 on the left and right sides, and the center ring cantilever rods 12 on the left and right sides are symmetrically arranged. Two center ring cantilever rods A12-1 are welded at the nodes of the two upper chords 14 and the ring beam 17, and the two center ring cantilever rods A extend horizontally outward and are parallel to each other. Three center ring cantilever rods 12 are respectively welded on the hollow balls 13 in the middle of the columns on the left and right sides, which are center ring cantilever rod B12-2, center ring cantilever rod C12-3 and center ring cantilever rod D12-4 from top to bottom, and center ring cantilever rod B extends obliquely upward, and the two center ring cantilever rods B are parallel to each other; the center ring cantilever rod C extends upward. The center ring outrigger rods B are inclined and extend obliquely, with an upward inclination angle smaller than that of the center ring outrigger rods B, and the center ring outrigger rods C on the left side are inclined to the left, and the center ring outrigger rods C on the right side are inclined to the right, so that there is a certain angle between the two center ring outrigger rods C, and the two center ring outrigger rods C are in an outwardly opened structural form; the center ring outrigger rods D are inclined and extend downward, and the center ring outrigger rods D on the left side are inclined to the left, and the center ring outrigger rods D on the right side are inclined to the right, so that there is a certain angle between the two center ring outrigger rods D, and the two center ring outrigger rods D are in an outwardly opened structural form.

[0050] A flange 18 is welded to the end of the center ring extension rod 12 .

[0051] Preferably, the central ring frame 1 is divided into four parts, each of which has a central angle of 90 degrees, and the ring beams 17 at the connection of the four parts are connected by flanges. The central ring frame 1 is split into four parts for assembly, which is convenient for carrying the central ring frame 1.

[0052] like Figure 3 , Figures 9 to 12 As shown, the radiation space steel truss 3 is composed of a plurality of connecting frames, and the adjacent connecting frames are detachably connected by connecting members; in this embodiment, the connecting frame includes a support section 8, two standard sections (standard section B11 and standard section A10) and a connecting section 9 connected in sequence. A plurality of groups of center ring extension rods 12 radiating outward are fixedly arranged on the outside of the center ring frame 1, and each group of center ring extension rods 12 corresponds to a radiation space steel truss 3. A plurality of connection section extension rods 26 (see for details) are fixedly arranged on one end of the connecting section 9. Fig. 9 As shown), the connecting section outrigger rod 26 and the center ring outrigger rod 12 are detachably connected via a connecting member, and the connecting section outrigger rod 26 and the center ring outrigger rod 12 correspond one to one.

[0053] like Fig. 9As shown, the connection section 9 is a wedge-shaped structure with one end narrow and the other end wide, and the narrow end is the first end of the radiation space steel truss 3, and the connection section extension rod 26 is fixedly arranged at the narrow end. The connection section 9 includes four radiation space steel truss chords 23, a plurality of radiation space steel truss vertical webs 24 connected to the radiation space steel truss chords 23, and a plurality of radiation space steel truss diagonal webs 25 arranged between the radiation space steel truss chords 23 and the radiation space steel truss vertical webs 24. The two ends of the radiation space steel truss diagonal webs 25 are welded to the welding nodes of the radiation space steel truss chords 23 and the radiation space steel truss vertical webs 24. There is a certain angle between the two radiation space steel truss chords 23 on the upper side, and there is a certain angle between the two radiation space steel truss chords 23 on the lower side. The two radiation space steel truss chords 23 on the left are parallel to each other, and the two radiation space steel truss chords 23 on the right are parallel to each other. The ends of the two radiating space steel truss chords 23 on the upper side extend outward and are provided with a connecting section extension rod A26-1, a connecting section extension rod B26-2 is provided at the inflection point between the connecting section extension rod A and the radiating space steel truss chord 23, a connecting section extension rod C26-3 is welded at the node between the upper radiating space steel truss chord 23 and the narrow end of the radiating space steel truss vertical web bar, and the two radiating space steel truss chords 23 on the lower side extend outward to form a connecting section extension rod D26-4.

[0054] Among them, the connecting section extension rod A, the connecting section extension rod B, the connecting section extension rod C and the connecting section extension rod D correspond to the center ring extension rod A, the center ring extension rod B, the center ring extension rod C and the center ring extension rod D one by one.

[0055] The angle between the two chords of the upper radiation space steel truss of the connecting joint 9 (and between the two chords of the lower radiation space steel truss) has a numerical range of 0 to 10 degrees. Since the space near the center ring frame 1 is small, the connecting joint 9 is a wedge-shaped structure, which facilitates the connection of its narrow end with the center ring frame 1 and enables the overall structure and size of the radiation space steel truss 3 to maintain reasonable specifications to ensure the overall structural strength.

[0056] like Figure 4 and Fig.10As shown, one end of the support segment 8 is fixedly provided with a connecting support 20 for matching with the truss support seat. Specifically, the four nodes at the lower end of the support segment 8 are welded and connected through a support segment hollow ball 21. The lower end of the support segment 8 is the second end of the radiation space steel truss 3. The connecting support 20 is fixedly provided on the two support segment hollow balls 21 on the upper side of the lower end of the support segment 8, and the connecting ear plate 27 is fixedly provided on the two support segment hollow balls 21 on the lower side. The end of the cable 2 is connected to the connecting ear plate 27. The support section 8 includes four parallel radial space steel truss chords 23, and the four radial space steel truss chords 23 are fixedly connected by multiple radial space steel truss vertical webs 24 and radial space steel truss diagonal webs 25. The two radial space steel truss chords 23 on the upper side extend outward, and the ends are welded with support section hollow balls 21. The upper support section hollow balls 21 are connected to the lower ones through the radial space steel truss diagonal webs 25, and the connecting bearing 20 is welded on the two upper support section hollow balls 21.

[0057] like Fig.11 and 12 As shown, the standard section A10 and the standard section B11 both include four radiating space steel truss chords 23, and the four radiating space steel truss chords 23 are fixedly connected by a plurality of radiating space steel truss vertical webs 24 and radiating space steel truss diagonal webs 25 to form a rectangular structure with flush ends. The difference between the two is that the lengths are different.

[0058] In this embodiment, the lengths of the standard section A and the standard section B are 5m and 3.75m respectively, which play the role of adjusting the diameter of the entire space steel truss. By combining different numbers of standard sections A and standard sections B in the radial space steel truss 3, a space steel truss construction support system with different diameters can be obtained. For example, when the specific dimensions of the center ring frame 1, the connection section 9, the support section 8, the standard section A and the standard section B are as shown in Table 1 below, 26m, 28m, 32m, 34m and 36m diameter space steel trusses can be combined through module combination, as shown in Table 2.

[0059] Table 1

[0060] Module Name Inner diameter / m Outer diameter / m Length / m Width / m Height / m Center ring frame 4 6.5 — — 2 Connection Section — — 3.75 1.25 1.25 Support section — — 3.75 1.25 1.25 Standard Section A — — 5 1.25 1.25 Standard Section B — — 3.75 1.25 1.25

[0061] Table 2

[0062] Platform diameter / m Modulus combination 26 Center ring + connection section + support section + standard section B 28 Center ring + connection section + support section + standard section A 32 Center ring + connection section + support section + standard section B + standard section B 34 Center ring + connection section + support section + standard section A + standard section B 36 Center ring + connection section + support section + standard section A + standard section A

[0063] Among the several radiation space steel trusses 3, at least some of the connecting components of the radiation space steel trusses 3 include tension and pressure sensors 19. The intelligent monitoring device obtains the tension and pressure values ​​at the corresponding positions of the radiation space steel trusses 3 through the tension and pressure sensors 19 and performs analysis. When the value of any tension and pressure sensor 19 exceeds the preset tension and pressure threshold, the on-site early warning module in the intelligent monitoring device is activated to issue an alarm prompt.

[0064] like Fig.13 As shown, the connecting component includes a flange 18 and a spoke-type tension and pressure sensor 19 , and the flange 18 and the spoke-type tension and pressure sensor 19 are fixedly connected by bolts 30 .

[0065] Take the specific connection method between the connecting section 9 and the central ring frame 1 as an example for explanation:

[0066] A flange 18 is fixedly provided at the end of the center ring extension rod 12, a bolt head 28 is fixedly provided at the end of the connecting section extension rod 26, a spoke-type tension and pressure sensor 19 is fixedly provided at the end of the connecting section extension rod 26 with the bolt head 28 through a threaded connection, and the spoke-type tension and pressure sensor 19 is fixedly connected to the flange 18 with bolts 30.

[0067] like Fig. 9 As shown, a tension and pressure sensor 19 is provided at the end of the connecting section extension rod 26 on the connecting section 9, and a flange 18 is welded to the other end of the radiation space steel truss chord rod 23 constituting the connecting section 9; Fig.11 As shown, a spoke-type tension and pressure sensor 19 is fixedly arranged at one end of the radiation space steel truss chord constituting the standard section A, and a flange 18 is welded at the other end. The spoke-type tension and pressure sensor 19 on the standard section A is used to connect with the flange 18 on the connecting section 9; Fig.12 As shown, a spoke-type tension and pressure sensor 19 is fixedly arranged at one end of the radiation space steel truss chord constituting the standard section B, and a flange 18 is welded at the other end. The spoke-type tension and pressure sensor 19 on the standard section B is used to connect with the flange 18 on the standard section A; Fig.10 and Figure 4 As shown, a spoke-type tension and pressure sensor 19 is fixedly arranged at one end of the chord of the radiation space steel truss constituting the support section 8. The spoke-type tension and pressure sensor 19 on the support section 8 is used to connect with the flange 18 on the standard section B.

[0068] like Figure 1 and Figure 2As shown, in this embodiment, a total of 24 radiation space steel trusses 3 are arranged between them, and the central angle between adjacent radiation space steel trusses 3 is 15 degrees. In actual use, the tension and pressure sensors 19 can be arranged on 3 to 4 radiation space steel trusses 3, so that the tension and pressure sensors 19 are evenly distributed in all the radiation space steel trusses 3, for example: in 3 radiation space steel trusses, the angle between every two radiation space steel trusses with tension and pressure sensors 19 is 120°; in 4 radiation space steel trusses, the angle between every two radiation space steel trusses with tension and pressure sensors 19 is 90°.

[0069] The intelligent monitoring device includes a tension and pressure sensor 19 and a control mechanism 29, and each node provided with the tension and pressure sensor 19 is provided with a control mechanism 29 for connecting with the tension and pressure sensor 19. The control mechanism 29 includes a signal amplifier, a microcontroller, a wireless communication module and a power module, and the power module provides the microcontroller with the power required for operation.

[0070] The monitoring and early warning system includes a data analysis module, a cloud data storage module and an on-site early warning module. The signal detected by the tension and pressure sensor 19 is transmitted to the microcontroller, and the microcontroller converts the received analog signal into a digital signal and transmits it to the data analysis module through the wireless communication module for data analysis. The data analysis module communicates with the cloud data storage module and the on-site early warning module through the Internet. The data analysis module analyzes and processes the monitoring data, and uploads the monitoring data to the cloud data storage module through the Internet. The cloud data storage module automatically stores the received monitoring data. The data of the cloud data storage module can be read through the mobile phone APP and PC software. The data analysis module, the mobile phone APP and the PC can all set the sampling period and pressure threshold; the on-site early warning module includes a mobile phone APP display and early warning module, a PC display and early warning module, and when the monitoring data exceeds the set threshold, the on-site early warning module issues an on-site alarm.

[0071] The specific working process of intelligent monitoring equipment and monitoring and early warning system is as follows:

[0072] (1) The tension and pressure sensors of several intelligent monitoring devices installed on the radiation space steel trusses are in a dormant state when not working.

[0073] (2) When the system time matches the set timing collection time, the data analysis module sends a wireless signal to the wireless communication module, and the wireless communication module wakes up the microcontroller by generating an interrupt.

[0074] (3) After the microcontroller is awakened, the signal amplifier is started, and the collected voltage signal is converted into a pressure value through the AD converter integrated inside the microcontroller. After completing the data collection, the microcontroller packages the monitoring data and transmits the data to the wireless communication module, which modulates the data and transmits it to the data analysis module. After the data transmission is completed, each module automatically enters the sleep state and waits for the next measurement.

[0075] (4) The data analysis module summarizes and analyzes the monitoring data and uploads it to the cloud data storage module via the Internet. Both mobile phone apps and PC software can read the data on the cloud platform, and the sampling period and pressure threshold can be set.

[0076] (5) When the monitoring data of any intelligent monitoring device exceeds the set threshold, the data analysis module activates the on-site early warning module to issue an on-site alarm.

[0077] The dismantling process of the assembled space steel truss construction support system of the present invention is as follows:

[0078] Release the 20 bolt connections between the truss support and the connecting support → hoist the entire space steel truss to the ground → set up a central scaffolding at the bottom of the warehouse to support the central ring frame → remove the cables → remove the circumferential support → release the connection between the radiation space steel truss and the central ring frame → hoist the radiation space steel truss to the ground → split the radiation space steel truss into various connecting frame modules → remove the central ring frame → remove the central scaffolding. When releasing the connection between the radiation space steel truss and the central ring frame, it should be done symmetrically to avoid the central ring frame from overturning and excessive deformation. After the radiation space steel truss is removed, it is further disassembled into basic connecting frame modules on the ground and transported out of the warehouse, and finally the central scaffolding is removed.

Claims

1. An intelligently monitored silo roof assembled spatial steel truss construction support system, characterized in that: It includes: Center ring frame; A plurality of radiating space steel trusses, wherein the plurality of radiating space steel trusses are evenly distributed along the circumferential direction of the central ring frame and are arranged in a radial shape, and the first ends of the radiating space steel trusses are detachably connected to the central ring frame; the radiating space steel trusses are an even number, and cables are connected between two radiating space steel trusses in a counterposition position, and annular supports are arranged between the plurality of radiating space steel trusses; A plurality of truss support seats, fixedly arranged on the silo wall at the top of the silo, for supporting the second end of the radiation space steel truss, the truss support seat being detachably connected to the second end of the radiation space steel truss; An intelligent monitoring device, used for obtaining the tension and pressure values ​​at one or more internal nodes on the radiation space steel trusses and / or at the connection nodes between the radiation space steel trusses and the central ring frame; the intelligent monitoring device includes a tension and pressure sensor and a control mechanism, and each node provided with a tension and pressure sensor is provided with a control mechanism for connecting with the tension and pressure sensor; the control mechanism includes a signal amplifier, a microcontroller, a wireless communication module and a power module, and the power module provides the microcontroller with the power required for operation; The central ring frame includes a plurality of central ring modules in a circular array, and the central ring module includes a rectangular inner frame and an outer frame. The four corners of the inner frame and the outer frame are welded and connected by chord rods. The inner frame and the outer frame each include two sections of ring beams and two columns. The four nodes of the inner frame are welded and connected by hollow balls. A ring beam is arranged between the two columns of the outer frame through a hollow ball connection, and a web is arranged between the hollow ball of the inner frame and the hollow ball of the outer frame. The radiation space steel truss is composed of a plurality of connecting frames, and adjacent connecting frames are detachably connected by connecting members; the connecting frame includes a support section, a standard section and a connecting section connected in sequence; Several groups of outwardly radiating center ring extension rods are fixedly arranged on the outside of the center ring frame, and each group of center ring extension rods corresponds to a radiating space steel truss. A plurality of connection section extension rods are fixedly arranged at one end of the connection section, and the connection section extension rods are detachably connected to the center ring extension rods through a connecting member. A connection support for matching with the truss support seat is fixedly arranged at one end of the support section; The connecting component comprises a flange and a spoke-type tension and pressure sensor, and the flange and the spoke-type tension and pressure sensor are fixedly connected by bolts.

2. The intelligently monitored silo roof assembled spatial steel truss construction support system according to claim 1 is characterized in that: The inner frames of two adjacent center ring modules are fixedly connected by sharing the hollow ball, and the outer frames are fixedly connected by a ring beam.

3. The intelligently monitored silo roof assembled spatial steel truss construction support system according to claim 1 is characterized in that: A plurality of outwardly radiating center ring outriggers are fixedly arranged on the columns of the outer frame, and the center ring outriggers are used to be connected to the first ends of the radiating space steel trusses.

4. The intelligently monitored silo roof assembled spatial steel truss construction support system according to claim 1 is characterized in that: Among the radiation space steel trusses, at least some of the connection components of the radiation space steel trusses include tension and pressure sensors, and the intelligent monitoring device obtains the tension and pressure values ​​at the corresponding positions of the radiation space steel trusses through the tension and pressure sensors.

5. The intelligently monitored silo roof assembled spatial steel truss construction support system according to claim 1 is characterized in that: The connecting section as a whole is a wedge-shaped structure with one end narrow and the other end wide, wherein the narrow end is the first end of the radiation space steel truss, and the connecting section extension rod is fixedly arranged at the narrow end.

6. The intelligently monitored silo roof assembled spatial steel truss construction support system according to claim 1 is characterized in that: The four nodes at the lower end of the support section are welded and connected through the hollow balls of the support section. The lower end of the support section is the second end of the radiation space steel truss. The two hollow balls of the support section on the upper side of the lower end of the support section are fixed with connecting supports, and the two hollow balls of the support section on the lower side are fixed with connecting ear plates. The ends of the cables are connected to the connecting ear plates.

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