Double-slope multi-section cable string truss structure system

Abstract

The utility model relates to a double-slope multi-section cable string truss structure system, belongs to the technical field of building structures, and solves the problem that in the prior art, a large-span truss structure occupies a large space in the longitudinal direction, so that the clearance height is too low. The device comprises a cable string truss structure and a supporting structure, the cable string truss structure comprises multiple rows of space truss structures arranged in parallel, side cables, middle cables and truss connecting pipes connected among the multiple rows of space truss structures. The lower portion of the space truss structure is fixedly connected with side cables and middle cables, and the middle cables and the side cables are arranged in a staggered mode. The side cables and the space truss structure are supported through a plurality of side cable supporting rods. The middle cable and the space truss structure are supported through a middle cable supporting rod. The double-slope multi-section cable string truss structure system has the effect that the indoor clearance height of a supporting system is increased on the premise that large-span supporting is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of building structures, in particular to a double-slope multi-section cable-string truss structure system. Background Art

[0002] With the progress of society, the development of science and technology, and the improvement of economic and cultural levels, people have put forward higher requirements for large-span spatial structures. At present, small and medium-span building structures cannot meet the functional requirements of large public buildings, nor can they meet people's increasingly high aesthetic requirements. This requires the development of new structural forms to meet both architectural functional and aesthetic requirements.

[0003] A string-and-string truss structure, consisting of truss beams, cables, and struts, is a typical rigid-flexible system. Its greatest strength lies in the fact that the struts combine the truss beams and high-strength steel cables into a self-balancing structure, fully utilizing the bending and compressive properties of the truss and the tensile properties of the high-strength cables. Prestressing creates a camber in the structure, significantly increasing its rigidity and offsetting some of the bending moments of the service load. In recent years, this type of structure has been widely used in large-span roof structures in construction projects, such as airports, stadiums, and train stations.

[0004] However, existing truss-string structures are tensioned with a single cable segment. When the span is large, this can result in the cable being positioned too low, the brace length being too long, and the interior headroom being too low. Therefore, a new truss-string structure system is needed to meet the spatial height requirements of long-span support systems in practical applications. Utility Model Content

[0005] In view of the above analysis, the present invention aims to provide a double-slope multi-section cable-tensioned truss structure system to solve the problem that the existing large-span support structure adopts single-section cable tensioning, resulting in excessive longitudinal space occupied by the truss and insufficient clearance height.

[0006] The purpose of this utility model is mainly achieved through the following technical solutions:

[0007] A double-slope multi-section cable-chord truss structure system comprises: a cable-chord truss structure and a support structure; the support structure is used to support the cable-chord truss structure;

[0008] The cable-string truss structure comprises: multiple rows of parallel space truss structures, side cables, middle cables, side cable struts, middle cable struts and truss connecting pipes; the truss connecting pipes are connected between the multiple rows of space truss structures;

[0009] The space truss structure comprises: a first space truss and a second space truss; the first space truss and the second space truss are symmetrically arranged and form an obtuse angle therebetween;

[0010] The side cables are fixedly connected to the lower parts of the first space truss and the second space truss, and the middle parts of the side cables are supported by the first space truss or the second space truss via a plurality of cable braces;

[0011] The two ends of the intermediate cable are respectively fixedly connected to the first space truss and the second space truss, and are staggered with the side cables; the intermediate cable and the space truss structure are supported by intermediate cable struts.

[0012] Furthermore, the first space truss and the second space truss have the same structural composition.

[0013] Furthermore, the first space truss and the second space truss both include: a truss lower chord, a truss upper chord and a truss diagonal brace; the truss lower chord is arranged in parallel below the truss upper chord, and the truss diagonal brace is obliquely supported between the truss lower chord and the truss upper chord.

[0014] Furthermore, a row of the spatial truss structures is provided with two truss upper chords parallel to each other; an inverted triangle is formed between two adjacent truss diagonal braces and the truss upper chord.

[0015] Furthermore, the side cables and the side cable struts, and the middle cables and the middle cable struts are connected and fixed by cable clamps.

[0016] Furthermore, a plurality of fourth anchoring nodes are provided on the truss upper chord, and the truss connecting pipe is fixedly connected to the fourth anchoring nodes.

[0017] Furthermore, a first anchoring node is provided at the lower part of the upper chord of the truss; a second anchoring node is provided at the middle part of the lower chord of the truss, and a third anchoring node is provided at the highest point of the lower chord of the truss; the lower end of the side cable is connected to the first anchoring node, and the upper end of the side cable is connected to the third anchoring node; the two ends of the middle cable are respectively fixedly connected to the two second anchoring nodes provided on the first space truss and the second space truss.

[0018] Furthermore, the cable clamp includes: a support ear, a cable clamp seat and a cable clamp base plate; the support ear is fixedly arranged above the cable clamp seat, and the cable clamp seat and the cable clamp base plate are connected by bolts; the support ear is used to fix the side cable support rod or the middle cable support rod; the side cable and the middle cable can be clamped and fixed between the cable clamp seat and the cable clamp base plate by bolts.

[0019] Furthermore, the cable clamp seat and the cable clamp base plate are assembled to form a cable hole that allows the cable to pass through.

[0020] Furthermore, when the side cables and / or the middle cables are double cables, the cable clamp is provided with double cable holes; when the side cables and / or the middle cables are single cables, the cable clamp is provided with a single cable hole.

[0021] Furthermore, the side cables are double cables; the middle cable is a single cable, and the middle cable is inserted in the gap between the two side cables; the two parallel truss upper chords are each provided with a first anchoring node, and the lower ends of the two side cables are respectively fixedly connected to the first anchoring nodes on the two truss upper chords.

[0022] The technical solution of this utility model can achieve at least one of the following effects:

[0023] 1. The double-slope multi-section cable-tensioned truss structure system of the present invention has a middle cable and two side cables arranged on the lower side of the space truss structure. The ends of the middle cable and the side cables are anchored on the lower chord of the truss of the space truss structure, and the middle cable, the side cables and the space truss structure are connected by middle cable struts and side cable struts. By using high-strength cables containing prestress as tension members, part of the pressure in the truss beam of the upper chord as a compression-bending member can be transferred to the tension cables, which can significantly reduce the vertical deflection of the long-span structure and improve the efficiency of the long-span structure in resisting bending moments.

[0024] 2. The double-slope multi-section cable string truss structure system of the utility model utilizes two side cables and the middle cable to overlap each other, and together with the double-slope truss structure composed of the first space truss and the second space truss, it constitutes a string truss. It can effectively overcome the problems of excessive vertical deflection, too low position of a single cable, and too long support rod, effectively improve the indoor clearance height, and can be widely used in large-span projects.

[0025] 3. The double-slope multi-segment cable-stayed truss structure system of the present invention, by arranging a single intermediate cable interspersed between the side cables of the double-root stay cables, can avoid the cable body from crossing at the overlap portion of the side cables and the intermediate cables, thereby achieving the continuity of force transmission between the side cables and the intermediate cables.

[0026] In the present invention, the above-mentioned technical solutions can be combined with each other to achieve more preferred combination solutions. Other features and advantages of the present invention will be described in the subsequent description, and some advantages will become apparent from the description or be understood through practice of the present invention. The objectives and other advantages of the present invention can be achieved and obtained through the contents particularly pointed out in the description and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings are only used for the purpose of illustrating specific embodiments and are not to be considered as limiting the present invention. Throughout the accompanying drawings, the same reference symbols denote the same components.

[0028] Figure 1 This is a schematic structural diagram of a double-slope multi-section cable string truss structure system of the present invention;

[0029] Figure 2 This is a schematic diagram of a space truss structure of a double-slope multi-segment cable-string truss structure system of the present invention;

[0030] Figure 3 Schematic diagram of the structure of the cable clamp.

[0031] Reference numerals:

[0032] 1-bottom chord of truss structure; 2-top chord of truss structure; 3-side cables; 4-middle cables; 5-side cable braces, 6-middle cable braces, 7-truss connecting pipes, 8-inclined support columns, 9-ground; 10-first anchoring node; 11-second anchoring node; 12-third anchoring node; 13-fourth anchoring node; 14-support ears; 15-cable clamp seat; 16-cable clamp base plate. DETAILED DESCRIPTION

[0033] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, and are not used to limit the scope of the present invention.

[0034] Example 1

[0035] A specific embodiment of the present invention discloses a double-slope multi-segment cable-string truss structure system, such as Figure 1 、 Figure 2 As shown, it includes: a cable-string truss structure and a supporting structure; the supporting structure is used to support the cable-string truss structure; the cable-string truss structure includes: multiple rows of parallel space truss structures, side cables 3, middle cables 4, side cable struts 5 and middle cable struts 6 and truss connecting pipes 7; the truss connecting pipes 7 are connected between multiple rows of space truss structures; the space truss structure includes: a first space truss and a second space truss; the first space truss and the second space truss are symmetrically arranged and form an obtuse angle between them; the first space truss and the second space truss are fixedly connected to the side cables 3 at the bottom, and the middle part of the side cables 3 is supported by multiple side cable struts 5 with the first space truss or the second space truss; the two ends of the middle cables 4 are respectively fixedly connected to the first space truss and the second space truss, and are staggered with the side cables 3; the middle cables 4 and the space truss structure are supported by the middle cable struts 6.

[0036] Specifically, the first space truss and the second space truss have the same structural composition.

[0037] In this embodiment, Figure 1 As shown, the supporting structure is an inclined support column 8 provided on both sides of the cable-string truss structure. The inclined support column 8 is installed on the ground 9, and the upper end is connected to the edge of the cable-string truss structure.

[0038] like Figure 2 As shown, the multiple space trusses are connected by truss connecting pipes 7, and a plurality of truss connecting pipes 7 are provided that are parallel to each other.

[0039] Specifically, the first space truss and the second space truss are both inverted triangle truss structures.

[0040] Furthermore, if Figure 2 As shown, the first space truss and the second space truss both include: a truss lower chord 1, a truss upper chord 2 and a truss diagonal brace; the truss lower chord 1 is arranged in parallel below the truss upper chord 2, and the truss diagonal brace is obliquely supported between the truss lower chord 1 and the truss upper chord 2.

[0041] like Figure 2 As shown, an inverted triangle is formed between two adjacent truss diagonal braces and the truss upper chord 2 .

[0042] Furthermore, the side cables 3 and the side cable support rods 5, and the middle cables 4 and the middle cable support rods 6 are connected and fixed by cable clamps.

[0043] like Figure 2 As shown, a plurality of fourth anchoring nodes 13 are provided on the truss upper chord 2 , and the truss connecting pipe 7 is fixedly connected to the fourth anchoring nodes 13 .

[0044] Specifically, multiple truss connecting tubes 7 are respectively connected one by one with multiple fourth anchoring nodes 13 of the truss upper chord 2 of the same spatial truss structure; at the same time, one truss connecting tube 7 connects multiple fourth anchoring nodes 13 on multiple spatial truss structures to realize the combined connection of multiple parallel spatial truss structures.

[0045] like Figure 1 、 Figure 2 As shown, a first anchoring node 10 is provided at the lower portion of the truss upper chord 2 ; a second anchoring node 11 is provided at the middle portion of the truss lower chord 1 ; and a third anchoring node 12 is provided at the highest point of the truss lower chord 1 .

[0046] Furthermore, the lower end of the side cable 3 is connected to the first anchoring node 10 on the truss upper chord 2 , and the upper end of the side cable 3 is connected to the third anchoring node 12 at the highest point of the truss lower chord 1 .

[0047] Furthermore, both ends of the intermediate cable 4 are fixedly connected to two second anchoring nodes 11 provided on the first space truss and the second space truss, respectively. Figure 1 、 Figure 2 shown.

[0048] In this embodiment, Figure 3 As shown, the cable clamp includes: a support ear 14, a cable clamp seat 15 and a cable clamp base 16; the support ear 14 is fixedly arranged above the cable clamp seat 15, and the cable clamp seat 15 and the cable clamp base 16 are connected by bolts; the support ear 14 is used to fix the side cable support rod 5 or the middle cable support rod 6; the side cable 3 and the middle cable 4 can pass through the cable hole between the cable clamp seat 15 and the cable clamp base 16 and be clamped and fixed between the cable clamp seat and the cable clamp base by bolts.

[0049] Specifically, the cable clamp seat and the cable clamp base plate are assembled to form a cable hole that allows the cable to pass through; when the side cable 3 and / or the middle cable 4 are double cables, the cable clamp is provided with a double cable hole; when the side cable 3 and / or the middle cable 4 are single cables, the cable clamp is provided with a single cable hole.

[0050] In this embodiment, the side cables 3 are double cables; the middle cable 4 is a single cable.

[0051] The double-slope multi-segment cable-stayed truss structure system of the present invention, the double-slope multi-segment cable composed of the side cables 3 and the middle cables 4 is installed under the truss lower chord 1 of the space truss structure, wherein the middle cable 4 is a single cable, and the side cables 3 are double cables. The cables are connected to the truss lower chord 1 by a number of vertical cable struts (side cable struts 5, middle cable struts 6), and the cable ends are connected to the space truss structure by anchoring, which has good structural stability. Compared with the conventional cable-stayed truss structure, according to actual force requirements, the middle cable 4 adopts a single cable and the side cables 3 adopts a double cable, which can avoid the cable bodies from crossing at the overlapped part of the two, realize the continuity of force transmission between the side cables 3 and the middle cables 4, greatly reduce the vertical deflection of the structure, and have a greater spanning capacity.

[0052] During implementation, the cable is a high-strength cable that passes through multiple cable clamps. The side cables 3 and the middle cables 4 are overlapped with each other, and a single middle cable 4 passes through the middle gap between the two side cables 3. The middle cable 4 is located in the middle of the two side cables 3.

[0053] A cable clamp with a support ear 14 is provided at the connection node between the lower end of the cable strut (side cable strut 5, middle cable strut 6) and the cable. The upper end of the cable strut is anchored to the corresponding anchor node on the spatial truss structure through a pin, and the lower end is fixedly connected to the support ear 14 of the corresponding cable clamp through a pin. The side cable strut 5 connects the two parallel side cables 3 to the spatial truss structure through the cable clamp.

[0054] The cable clamp seat 15 and cable clamp base 16 of the cable clamp, when assembled, form a cable hole for allowing the cable to pass through. The cable (side cable 3 or middle cable 4) is clamped and fixed in the cable hole in the middle of the cable clamp by bolts at the bottom. Furthermore, when the steel cable is tensioned during construction, a staged tensioning method is adopted. At each stage, the two sets of side cables 3 are tensioned simultaneously, and then the middle cable 4 is tensioned until the designed cable force and position are achieved.

[0055] Compared with the prior art, the technical solution provided by this embodiment has at least one of the following beneficial effects:

[0056] 1. The double-slope, multi-segment cable-stayed truss structure of the present invention has a beautiful shape. High-strength steel cables are used to form the side cables 3 and the middle cables 4 arranged in an interlaced manner. This can give full play to the good bending and compressive performance of the spatial tube truss and the high tensile bearing capacity of the high-strength steel cables. The slender rods create a transparent interior effect and are well compatible with metal roofs.

[0057] 2. Compared with conventional truss string structure construction, the double-slope multi-segment cable string truss structure system of the present invention utilizes two side cables 3 and a middle cable 4 to overlap each other, and together with the double-slope tube truss, it forms a truss string. This significantly increases the cross-sectional height of the long-span bending member, can significantly reduce the vertical deformation of the long-span structure, improve the efficiency of the long-span structure in resisting bending moments, and reduce the amount of steel used.

[0058] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any changes or replacements that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed in the present invention should be covered by the protection scope of the present invention.

Claims

1. A double-slope multi-segment cable string truss structure system, characterized in that: include: Cable-string truss structures and supporting structures; The supporting structure is used to support the cable-string truss structure; The cable-string truss structure comprises: multiple rows of space truss structures arranged in parallel, side cables (3), middle cables (4), side cable struts (5), middle cable struts (6), and truss connecting pipes (7); the truss connecting pipes (7) are connected between the multiple rows of space truss structures; The space truss structure comprises: a first space truss and a second space truss; the first space truss and the second space truss are symmetrically arranged and form an obtuse angle therebetween; The side cables (3) are fixedly connected to the bottom of the first space truss and the second space truss, and the middle of the side cables (3) and the first space truss or the second space truss are supported by a plurality of cable support rods (5); The two ends of the intermediate cable (4) are respectively fixedly connected to the first space truss and the second space truss, and are staggered with the side cables (3); the intermediate cable (4) and the space truss structure are supported by an intermediate cable support rod (6).

2. The double-slope multi-segment cable string truss structure system according to claim 1 is characterized in that: The first space truss and the second space truss both comprise: a truss lower chord (1), a truss upper chord (2) and a truss diagonal brace; the truss lower chord (1) is arranged in parallel below the truss upper chord (2), and the truss diagonal brace is obliquely supported between the truss lower chord (1) and the truss upper chord (2).

3. The double-slope multi-segment cable string truss structure system according to claim 2, characterized in that: A row of the spatial truss structures is provided with two mutually parallel truss upper chords (2); an inverted triangle is formed between two adjacent truss diagonal braces and the truss upper chord (2).

4. The double-slope multi-segment cable string truss structure system according to claim 2 or 3, characterized in that: The side cables (3) and the side cable support rods (5), as well as the middle cables (4) and the middle cable support rods (6) are connected and fixed via cable clamps.

5. The double-slope multi-segment cable string truss structure system according to claim 4 is characterized in that: A plurality of fourth anchoring nodes (13) are provided on the truss upper chord (2), and the truss connecting pipe (7) is fixedly connected to the fourth anchoring nodes (13).

6. The double-slope multi-segment cable string truss structure system according to claim 5, characterized in that: A first anchoring node (10) is provided at the lower portion of the upper chord (2) of the truss; a second anchoring node (11) is provided at the middle portion of the lower chord (1) of the truss, and a third anchoring node (12) is provided at the highest point of the lower chord (1) of the truss; the lower end of the side cable (3) is connected to the first anchoring node (10), and the upper end of the side cable (3) is connected to the third anchoring node (12); and the two ends of the intermediate cable (4) are fixedly connected to two second anchoring nodes (11) provided on the first space truss and the second space truss, respectively.

7. The double-slope multi-segment cable string truss structure system according to claim 6, characterized in that: The cable clamp comprises: a support ear (14), a cable clamp seat (15) and a cable clamp base plate (16); the support ear (14) is fixedly arranged above the cable clamp seat (15), and the cable clamp seat (15) and the cable clamp base plate (16) are connected by bolts; the support ear (14) is used to fix the side cable support rod (5) or the middle cable support rod (6); the side cable (3) and the middle cable (4) can be clamped and fixed between the cable clamp seat (15) and the cable clamp base plate (16) by bolts.

8. The double-slope multi-segment cable string truss structure system according to claim 7, characterized in that: The cable clamp seat (15) and the cable clamp base plate (16) are assembled to form a cable hole capable of allowing the cable to pass through.

9. The double-slope multi-segment cable string truss structure system according to claim 8, characterized in that: When the side cables (3) and / or the middle cables (4) are double cables, the cable clamp is provided with double cable holes; when the side cables (3) and / or the middle cables (4) are single cables, the cable clamp is provided with a single cable hole.

10. The double-slope multi-segment cable string truss structure system according to any one of claims 1-3 and 5-9, characterized in that: The side cables (3) are double cables; the middle cable (4) is a single cable, and the middle cable (4) is inserted into the gap between the two side cables (3); the two mutually parallel truss upper chords (2) are each provided with a first anchoring node (10), and the lower ends of the two side cables (3) are respectively fixedly connected to the first anchoring nodes (10) on the two truss upper chords (2).

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