A prestressed tension anchoring structure and building system based on steel trusses

Abstract

The present invention proposes a prestressed tensioning and anchoring structure based on a steel truss, by arranging a steel truss with an upper arch structure and a lower arch prestressed cable corresponding to the upper arch structure, the prestressed cable generates an overall prestress on the steel truss, thereby achieving the technical effect of increasing the span of the steel truss, reducing the material consumption of the steel truss, and reducing the cross-sectional size of the components of the steel truss. Specifically, the bottom of the steel truss is an upper arch structure, and the lower arch structure is formed from the two ends to the middle of the prestressed cable by natural gravity. The vault of the upper arch structure coincides with the vault of the lower arch structure in spatial position, and the vault of the upper arch structure is opposite to the vault of the lower arch structure. The prestressed cable is a flexible rope body, so the prestressed cable generates downward prestress on the steel truss. When subjected to external force vibration, the prestressed cable can generate load on the steel truss, thereby keeping the steel truss mechanically stable.

Description

Technical Field

[0001] The invention belongs to the technical field of construction, and in particular relates to a prestressed tensioning anchoring structure and a construction system based on a steel truss. Background Art

[0002] With the rise of the modern construction industry, the building structure of our country is also constantly improving and upgrading, especially the selection of house materials and the design of house structures have been practiced and optimized, so that the service life of the house can be extended while saving materials; for example, in the construction of sports stadiums, from the initial open-air venues to the later indoor venues to meet the sports needs in bad weather, in the construction of indoor venues, metal trusses and concrete materials are generally used to build the overall venues, and the roof (roof) is generally built on site with a large number of rigid metal trusses, and large-scale lifting equipment is used to cooperate with manual welding and assembly during the construction; the roof built with a large number of rigid metal trusses consumes a large amount of rigid metal materials, and the stability of the roof also needs to be guaranteed based on the large amount of rigid materials, but the large amount of rigid materials will cause the construction process to be time-consuming and labor-intensive, and the pressure of the supporting structure used to support the roof is too high;

[0003] That is, ensuring the stability of the roof by using a large amount of rigid materials will result in the disadvantages of a time-consuming and labor-intensive construction process and excessive pressure on the supporting structure used to support the roof;

[0004] It can be seen that how to reduce the amount of roof construction materials and ensure the stability of the roof structure is a technical problem that technical personnel in this field urgently need to solve. Summary of the invention

[0005] The present invention provides a prestressed tension anchoring structure based on a steel truss to at least solve the above technical problems;

[0006] In order to solve the above problems, the first aspect of the present invention provides a prestressed tension anchoring structure based on a steel truss, the anchoring structure comprising: a steel truss, the bottom of the steel truss is an upper arch structure, and a plurality of anchoring points are arranged at intervals along the arch structure; a prestressed cable, the prestressed cable is arranged below the upper arch structure through a plurality of lifting components, one end of the plurality of lifting components is correspondingly arranged on the plurality of anchoring points, and the other end of the plurality of lifting components is connected to the prestressed cable; the prestressed cable comprises: a cable body, both ends of the cable body are provided with a pair of tensioning joints, and the pair of tensioning joints are used to connect the prestressed cable to the cable body. The two ends of the cable body are detachably connected to the web member between a pair of lower chords; the tensioning joints include: a cast joint and a single-ear joint, one end of the cast joint is connected to one end of the cable body, the other end of the cast joint is detachably connected to one end of the single-ear joint, and the other end of the single-ear joint is movably connected to the web member; wherein the prestressed cable is a flexible rope body, and the two ends to the middle of the prestressed cable form a lower arch structure through natural gravity, the vault of the upper arch structure coincides with the spatial position of the vault of the lower arch structure, and the vault of the upper arch structure is opposite to the vault of the lower arch structure.

[0007] In the first aspect, the steel truss includes: two pairs of oppositely arranged bases, each pair of the bases are arranged at intervals; a pair of lower chords, the two ends of the pair of lower chords are correspondingly arranged on the two pairs of bases, and the pair of lower chords are arc-shaped as the upper arch structure; a pair of upper chords, the pair of upper chords are horizontal in shape, and are arranged on the pair of lower chords through a frame composed of a plurality of cross-arranged web bars.

[0008] In the first aspect, the cast joint is a cylindrical structure, and one end of the cylindrical structure is sleeved on the cable body, the cable body can rotate freely in the cylindrical structure, and an internal thread is provided on the inner wall of the other end of the cylindrical structure; a screw is provided at the axis of one end of the single-ear structure, the external thread of the screw is adapted to the internal thread of the cylindrical structure, and the other end of the single-ear structure is hinged to the web.

[0009] In the first aspect, the other end of the single ear structure is an ear plate, and a connecting hole is provided on the ear plate. The connecting hole is connected to the web through a pin shaft.

[0010] In the first aspect, the tension anchoring structure further includes a reaction force assembly; the reaction force assembly includes an anchoring end and a traction end, the anchoring end is arranged on the casting joint, and the traction end is arranged on the single-ear joint for connecting the casting joint and the single-ear joint.

[0011] In the first aspect, the surface of the cable body is provided with an alloy coating, and the alloy coating is composed of a Galfan coating; the elastic modulus of the cable body is 160±10KN㎜ 2 .

[0012] In the first aspect, the surfaces of the screw and the pin are provided with an electroplated zinc layer, and the thickness of the electroplated zinc layer is 10-30 μm.

[0013] In the first aspect, the lifting assembly includes a plurality of pairs of struts: each pair of the struts is V-shaped, the intersection ends of the V-shaped struts are connected to the cable body through a cable ball, and a pair of free ends of the V-shaped struts are correspondingly connected to a pair of lower chords.

[0014] In a second aspect, the present invention provides a building system based on a prestressed tension anchoring structure, the building system comprising: a plurality of anchoring structures, the plurality of anchoring structures are arranged at intervals, and the plurality of anchoring structures are connected to form an integrated roof by connecting pieces, the top of the integrated roof is provided with a roof structure, and the bottom of the integrated roof is provided with a skeleton for supporting the anchoring structure; wherein each anchoring structure comprises: a steel truss and a prestressed cable, the bottom of the steel truss is an arched structure, and a plurality of anchors are arranged at intervals along the arched structure; The prestressed cable is arranged below the arch structure through a number of lifting components, one end of the lifting components is correspondingly arranged on the anchoring points, and the other end of the lifting components is connected to the prestressed cable; wherein the prestressed cable is a flexible rope body, and the two ends to the middle part of the prestressed cable form a lower arch structure through natural gravity, the vault of the upper arch structure coincides with the spatial position of the vault of the lower arch structure, and the vault of the upper arch structure is opposite to the vault of the lower arch structure.

[0015] In the second aspect, the roof structure is a transparent structure made of PVC material and aluminum alloy.

[0016] Beneficial effect: The present invention proposes a prestressed tensioning and anchoring structure based on a steel truss, which generates overall prestress on the steel truss through the prestressed cables by arranging a steel truss with an upper arch structure and a lower arch prestressed cable corresponding to the upper arch structure, thereby achieving the technical effect of increasing the span of the steel truss, reducing the material consumption of the steel truss, and reducing the cross-sectional size of the components of the steel truss. Specifically, the bottom of the steel truss is an upper arch structure, and the lower arch structure is formed from the two ends to the middle of the prestressed cable by natural gravity. The vault of the upper arch structure coincides with the vault of the lower arch structure in spatial position, and the vault of the upper arch structure is opposite to the vault of the lower arch structure. The prestressed cables are flexible rope bodies. Therefore, the prestressed cables generate downward prestress on the steel truss. When subjected to external force vibration, the prestressed cables can generate load on the steel truss, thereby keeping the steel truss mechanically stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of this specification or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is a structural schematic diagram of a prestressed tension anchoring structure based on a steel truss in Embodiment 1 of the present invention;

[0019] Figure 2 The structure of the prestressed cable in the first embodiment of the present invention is shown in FIG. Figure 1 ;

[0020] Figure 3 The structure of the prestressed cable in the first embodiment of the present invention is shown in FIG. Figure 2 ;

[0021] Figure 4 It is a schematic diagram of the connection relationship between the reaction force device and the casting joint and the single-ear joint in the first embodiment of the present invention.

[0022] Description of reference numerals:

[0023] 1. Steel truss; 101-upper chord; 102-lower chord; 103-web member;

[0024] 2. Prestressed cable; 201-cable body; 202-casting joint; 203-single ear joint;

[0025] 3. Hoisting components;

[0026] 4. Base;

[0027] 5. Reaction beam;

[0028] 6. Drive components;

[0029] 7. Steel strand. DETAILED DESCRIPTION

[0030] The technical scheme of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0031] At the same time, in the embodiments of this specification, when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a centered component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a centered component at the same time. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a centered component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in the embodiments of this specification are for illustrative purposes only and are not intended to limit the present invention.

[0032] Embodiment 1:

[0033] like Figure 1-3 As shown, the first embodiment of the present invention provides a prestressed tension anchoring structure based on a steel truss, and the anchoring structure includes: a steel truss 1 and a prestressed cable 2, the bottom of the steel truss 1 is an upper arch structure, and a plurality of anchoring points are arranged at intervals along the arch structure; the prestressed cable 2 is arranged below the arch structure through a plurality of lifting components 3, one end of the plurality of lifting components 3 is correspondingly arranged at a plurality of anchoring points, and the other end of the plurality of lifting components 3 is connected to the prestressed cable 2; wherein, the prestressed cable 2 is a flexible rope body, and the two ends to the middle part of the prestressed cable 2 form a lower arch structure through natural gravity, the vault of the upper arch structure coincides with the vault of the lower arch structure in spatial position, and the vault of the upper arch structure is opposite to the vault of the lower arch structure.

[0034] Specifically, the present embodiment provides a prestressed tensioning and anchoring structure based on a steel truss 1, which is provided with a steel truss 1 having an upper arch structure and a lower arch prestressed cable 2 corresponding to the upper arch structure. The prestressed cable 2 generates an overall prestress on the steel truss 1, thereby achieving the technical effect of increasing the span of the steel truss 1, reducing the material consumption of the steel truss 1, and reducing the cross-sectional size of the components of the steel truss 1. Specifically, the bottom of the steel truss 1 is an upper arch structure, and the lower arch structure is formed by natural gravity from both ends to the middle of the prestressed cable 2. The vault of the upper arch structure coincides with the vault of the lower arch structure in spatial position, and the vault of the upper arch structure is opposite to the vault of the lower arch structure. The prestressed cable 2 is a flexible rope body. Therefore, the prestressed cable 2 generates downward prestress on the steel truss 1. When subjected to external force vibration, the prestressed cable 2 can generate a load on the steel truss 1, thereby keeping the steel truss 1 mechanically stable.

[0035] In some possible embodiments, the steel truss 1 includes: two pairs of oppositely arranged bases 4, each pair of bases 4 is arranged at intervals; a pair of lower chords 102, the two ends of the pair of lower chords 102 are correspondingly arranged on the two pairs of bases 4, and the pair of lower chords 102 are arc-shaped upper arch structures; a pair of upper chords 101, the pair of upper chords 101 are horizontal in shape, and are arranged on the pair of lower chords 102 through a frame composed of a plurality of cross-arranged web members 103.

[0036] This is to establish an initial installation position through two pairs of bases 4, and then install the lower chord 102 and the upper chord 101 and the web member 103 between the upper chord 101 and the lower chord 102 in sequence according to the initial installation position. The installation process requires real-time detection of whether the installation accuracy between the upper chord 101, the lower chord 102 and the web member 103 meets the preset installation accuracy, thereby ensuring the installation stability of the steel truss 1.

[0037] In some possible embodiments, the prestressed cable 2 includes: a cable body 201, each end of the cable body 201 is provided with a pair of tension joints, the pair of tension joints are used to detachably connect the two ends of the cable body 201 to the web 103 between a pair of lower chords 102; the tension joints include: a cast joint 202 and a single-ear joint 203, one end of the cast joint 202 is connected to one end of the cable body 201, the other end of the cast joint 202 is detachably connected to one end of the single-ear joint 203, and the other end of the single-ear joint 203 is movably connected to the web 103.

[0038] Since the prestressed cable 2 is relatively large and difficult to install as a whole, it is necessary to install the prestressed cable 2 in a split manner. In order to enable the prestressed cable 2 to be installed in a split manner, so as to improve the installation efficiency and installation accuracy of the prestressed cable 2, the prestressed cable 2 is set as a cable body 201 and a pair of tension joint structures, and the tension joint structure and the cable body 201 are detachably connected. Therefore, when the prestressed cable 2 needs to be installed, the pair of tension joints can be installed to the specified position first, and then the cable body 201 can be installed on the cable body 201, which can greatly save installation time and improve the installation accuracy and stability. The prestressed cable 2 is installed in conjunction with the steel truss 1 of the steel structure, which increases the span of the steel truss 1, reduces the cross-sectional size of the steel truss 1, and can save 20%-30% of the steel consumption, while reducing the weight of the steel truss 1 and greatly saving the steel consumption.

[0039] In some possible embodiments, the casting joint 202 is a cylindrical structure, and one end of the cylindrical structure is sleeved on the cable body 201, the cable body 201 can rotate freely in the cylindrical structure, and an internal thread is provided on the inner wall of the other end of the cylindrical structure; a screw is provided at the axis of one end of the single-ear structure, the external thread of the screw is adapted to the internal thread of the cylindrical structure, and the other end of the single-ear structure is hinged to the web 103.

[0040] In this way, when the pouring joint 202 is connected to the single-ear structure, the internal thread of the cylindrical structure can be adapted to the external thread of the threaded rod of the single-ear structure. The connection method through the threaded connection is more stable and more convenient to disassemble and assemble.

[0041] In some possible embodiments, the tensioning and anchoring structure also includes a reaction component; the reaction component includes an anchoring end and a traction end, the anchoring end is arranged on the cast joint 202, and the traction end is arranged on the single-ear joint 203, which is used to connect the cast joint 202 and the single-ear joint 203; the reaction component includes a reaction beam 5 of a plate-like structure, a steel strand 7 and a pair of driving components 6; a clamping hole adapted to one end of the cast joint 202 is arranged in the middle of the reaction beam 5, and the clamping hole is sleeved on one end of the cast joint 202, and a pair of connecting holes consistent with the opening direction of the clamping hole are arranged at both ends of the reaction beam 5; a pair of free ends of the steel strand 7 are correspondingly passed through a pair of connecting holes and are connected through a pair of driving components 6, and the middle hoop of the steel strand 7 is arranged at one end of the single-ear joint 203 away from the cast joint 202; in this way, when the driving component 6 is driven, the two ends of the steel strand 7 are pulled to displace in the direction away from the end of the single-ear joint 203. During the actual installation process, the installation position of the prestressed cable may become loose or detached, that is, the cast joint 202 and the single-ear joint 203 may become loose or detached, thereby affecting the stability of the entire tensioned anchoring structure. Therefore, the reaction force component is used to correct and pull the cast joint 202 (tensioning end) to the single-ear joint 203 (fixed end), thereby stabilizing the stability of the prestressed cable 2 and the steel truss 1.

[0042] In some possible implementations, the other end of the single ear structure is an ear plate, and a connecting hole is provided on the ear plate. The connecting hole is connected to the web rod 103 through a pin shaft.

[0043] The purpose of setting the ear plate is to provide a connection medium with the external lifting device.

[0044] In some possible implementations, the surface of the cable body 201 is provided with an alloy coating, and the alloy coating is composed of a Galfan coating; the elastic modulus of the cable body 201 is 160±10KN㎜ 2 .

[0045] This is to prevent the cable body 201 from corrosion in bad weather; a layer of alloy coating is applied on the surface of the cable body 201, and its tensile strength reaches 1670Mpa, which complies with the provisions of "Zinc-5%-Mixed Rare Earth Alloy Coated Steel Stranded Wire for Construction Engineering" TB / Y4542-2016.

[0046] In some possible embodiments, the surface of the screw and the pin is provided with an electroplated zinc layer, and the thickness of the electroplated zinc layer is 10-30 μm to prevent the surface of the screw and the pin from rusting during long-term use, which makes it difficult to disassemble the connecting parts with the screw and the pin.

[0047] In some possible implementations, the lifting assembly 3 includes several pairs of struts: each pair of struts is V-shaped, the intersection ends of the V-shaped struts are connected to the cable body 201 through a cable ball, and a pair of free ends of the V-shaped struts are correspondingly connected to a pair of lower chords 102.

[0048] This is to ensure the connection stability between the strut and the cable body 201. The strut is set to a V-shaped structure, and the lower chord 102 is connected through a pair of free ends of the V-shaped structure to form a triangle shape, so that the structure is more stable.

[0049] Embodiment 2:

[0050] The present invention provides a building system based on a prestressed tension anchoring structure, the building system comprising: a plurality of anchoring structures, the plurality of anchoring structures are arranged at intervals, and the plurality of anchoring structures are connected to form an integrated roof through connecting pieces, the top of the integrated roof is provided with a roof structure, and the bottom of the integrated roof is provided with a skeleton for bearing the anchoring structure; wherein each anchoring structure comprises: a steel truss 1 and a prestressed cable 2, the bottom of the steel truss 1 is an arched structure, and a plurality of anchoring cables are arranged at intervals along the arched structure Points; the prestressed cable 2 is arranged below the arch structure through a number of lifting components 3, one ends of the several lifting components 3 are correspondingly arranged on a number of anchoring points, and the other ends of the several lifting components 3 are connected to the prestressed cable 2; wherein the prestressed cable 2 is a flexible rope body, and the two ends to the middle part of the prestressed cable 2 form a lower arch structure through natural gravity, the vault of the upper arch structure coincides with the spatial position of the vault of the lower arch structure, and the vault of the upper arch structure is opposite to the vault of the lower arch structure.

[0051] Specifically, the second embodiment provides a building system based on a prestressed tensioned anchoring structure, which is provided by setting a prestressed tensioned anchoring structure based on a steel truss with an upper arch structure of the steel truss, and a lower arch prestressed cable corresponding to the upper arch structure, and the prestressed cable generates an overall prestress on the steel truss, thereby achieving the technical effect of increasing the span of the steel truss, reducing the amount of steel truss material used, and reducing the cross-sectional size of the steel truss components. Specifically, the bottom of the steel truss is an upper arch structure, and the lower arch structure is formed by natural gravity from the two ends to the middle of the prestressed cable. The vault of the upper arch structure coincides with the vault of the lower arch structure in spatial position, and the vault of the upper arch structure is opposite to the vault of the lower arch structure, and the prestressed cable is a flexible rope body, so the prestressed cable generates downward prestress on the steel truss, and when subjected to external force vibration, the prestressed cable can generate load on the steel truss, thereby keeping the steel truss mechanically stable.

[0052] In some other possible embodiments, the roof structure is a transparent structure made of PVC material and aluminum alloy; this is to ensure the light transmittance and stability of the roof, and use the light transmittance of the PVC material to introduce light into the room to adapt to house buildings similar to stadiums, and then cooperate with the roof frame made of aluminum alloy to meet the design requirements for the compressive strength of the roof.

[0053] Specifically, this embodiment 2 proposes a roof design implementation method, which includes: the roof is averagely equipped with 9 chord trusses of the same specifications, with a truss span of 56.64m, the upper part of the support cantilevers 2.96m, the height is 5.55m, and the truss height is between +17.2-+2.75m. The support is located on the 5th axis and the 14th axis. The spacing between each truss is 8.7m, and the trusses are connected by tie rods. The chord truss is a circular tube truss with an equilateral triangle interface shape, and the upper chord diameter is D402*30, D402*22, and D402*16, and the material is Q355B. The lower chord diameter is D203*14 and D203*12, and the cable is a high vanadium cable φ95 with a nominal tensile strength of 1670Mma. They are connected to the steel trusses through pins, cable balls and φ600 hollow ball nodes. The supports are pot-type hinge supports. During installation and tensioning, one end is hinged and the other end slides. After the roof load is applied, the two ends are hinged. Each truss weighs about 39 tons.

[0054] Since the second embodiment and the first embodiment are embodiments of the same inventive concept and some of their structures are exactly the same, the structures in the second embodiment that are substantially the same as those in the first embodiment will not be elaborated in detail. For the parts not elaborated in detail, please refer to the first embodiment.

[0055] Finally, it should be noted that the above embodiments are only specific implementations of the present invention, which are used to illustrate the technical solutions of the present invention, rather than to limit them. The protection scope of the present invention is not limited thereto. Although the present invention is described in detail with reference to the above embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the above embodiments within the technical scope disclosed by the present invention, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention. They should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

[0056] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation modes, and they can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A prestressed tension anchoring structure based on a steel truss, characterized in that: The anchoring structure comprises: A steel truss, wherein the bottom of the steel truss is an upper arch structure, and a plurality of anchoring points are arranged at intervals along the arch structure; A prestressed cable, wherein the prestressed cable is arranged below the upper arch structure through a plurality of hoisting assemblies, one end of the plurality of hoisting assemblies is correspondingly arranged at the plurality of anchoring points, and the other ends of the plurality of hoisting assemblies are connected to the prestressed cable; the prestressed cable comprises: a cable body, both ends of the cable body are provided with a pair of tensioning joints, and the pair of tensioning joints are used to detachably connect the two ends of the cable body to a web bar between a pair of lower chord bars; the tensioning joints comprise: a cast joint and a single-ear joint, one end of the cast joint is connected to one end of the cable body, the other end of the cast joint is detachably connected to one end of the single-ear joint, and the other end of the single-ear joint is movably connected to the web bar; The prestressed cable is a flexible rope body, and the two ends to the middle of the prestressed cable form a lower arch structure through natural gravity, the arch of the upper arch structure coincides with the arch of the lower arch structure in spatial position, and the arch of the upper arch structure is opposite to the arch of the lower arch structure; The tension anchoring structure further includes a reaction force component; The reaction force assembly includes an anchoring end and a traction end. The anchoring end is arranged on the casting joint, and the traction end is arranged on the single-ear joint for connecting the casting joint and the single-ear joint.

2. The prestressed tension anchoring structure based on steel trusses according to claim 1 is characterized in that: Steel trusses include: Two pairs of bases are arranged opposite to each other, and each pair of bases are arranged at an interval; A pair of lower chord rods, two ends of the pair of lower chord rods are correspondingly arranged on two pairs of the bases, and the pair of lower chord rods are in the arc shape of the upper arch structure; A pair of upper chords are horizontal and are arranged on a pair of lower chords through a frame composed of a plurality of cross-arranged web bars.

3. The prestressed tension anchoring structure based on steel trusses according to claim 2 is characterized in that: The casting joint is a cylindrical structure, and one end of the cylindrical structure is sleeved on the cable body, the cable body can rotate freely in the cylindrical structure, and the inner side wall of the other end of the cylindrical structure is provided with an internal thread; A screw is arranged at the axis center of one end of the single-ear joint, the external thread of the screw is matched with the internal thread of the cylindrical structure, and the other end of the single-ear joint is hinged to the web.

4. The prestressed tension anchoring structure based on steel trusses according to claim 3 is characterized in that: The other end of the single-ear joint is an ear plate, and a connecting hole is arranged on the ear plate. The connecting hole is connected to the web through a pin shaft.

5. The prestressed tension anchoring structure based on steel trusses according to claim 4 is characterized in that: The surface of the cable body is provided with an alloy coating, and the alloy coating is composed of a Galfan coating; The elastic modulus of the cable body is 160±10KN㎜ 2 .

6. The prestressed tension anchoring structure based on steel trusses according to claim 5 is characterized in that: The surfaces of the screw and the pin are provided with an electroplated zinc layer, and the thickness of the electroplated zinc layer is 10-30 μm.

7. The prestressed tension anchoring structure based on steel trusses according to claim 1 is characterized in that: The lifting assembly includes several pairs of support rods: Each pair of the struts is V-shaped, the intersection ends of the V-shaped struts are connected to the cable body through a cable ball, and a pair of free ends of the V-shaped struts are correspondingly connected to a pair of lower chords.

8. A building system based on a prestressed tension anchoring structure, characterized in that: The building system is applied to a prestressed tension anchoring structure based on a steel truss as described in claim 1, comprising: A plurality of anchoring structures, wherein the plurality of anchoring structures are arranged at intervals, and the plurality of anchoring structures are connected to form an integrated top cover by connecting pieces, wherein a roof structure is arranged on the top of the integrated top cover, and a frame for carrying the anchoring structure is arranged on the bottom of the integrated top cover; Wherein, each of the anchoring structures comprises: a steel truss and a prestressed cable, the bottom of the steel truss is an arch structure, and a number of anchoring points are arranged at intervals along the arch structure; the prestressed cable is arranged under the arch structure through a number of lifting components, one end of the number of lifting components is correspondingly arranged on the number of anchoring points, and the other end of the number of lifting components is connected to the prestressed cable; wherein, the prestressed cable is a flexible rope body, and the lower arch structure is formed from the two ends to the middle part of the prestressed cable by natural gravity, the vault of the upper arch structure coincides with the spatial position of the vault of the lower arch structure, and the vault of the upper arch structure is opposite to the vault of the lower arch structure.

9. The building system based on the prestressed tension anchoring structure according to claim 8 is characterized in that: The roof structure is a transparent structure made of PVC material and aluminum alloy.

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