CN115162523A - Tension shunting type large-span space grid structure - Google Patents
Tension shunting type large-span space grid structure Download PDFInfo
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- CN115162523A CN115162523A CN202211098380.8A CN202211098380A CN115162523A CN 115162523 A CN115162523 A CN 115162523A CN 202211098380 A CN202211098380 A CN 202211098380A CN 115162523 A CN115162523 A CN 115162523A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/342—Structures covering a large free area, whether open-sided or not, e.g. hangars, halls
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/58—Connections for building structures in general of bar-shaped building elements
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Abstract
The invention provides a tension shunting type large-span space grid structure, belongs to the technical field of building design, and solves the problems of large on-site welding workload, difficult structure installation and positioning, more residual stress generated by welding, low construction efficiency and high on-site construction cost. The tension split-flow type large-span space grid structure is divided into a grid encryption area and a grid non-encryption area; the grid encryption area and the grid non-encryption area both comprise: a lattice structure winding assembly; the first end of the grid structure web member is connected with the grid structure upper chord component; the grid structure lower chord component of the grid encryption area is connected with the grid structure upper chord component through the second end of the grid structure web member. The invention widens the application range of the structural span in the form of the bolt ball node of the space grid structure, the maximum structural span can reach 120m-140m, provides wider space for engineering practice and has wide application prospect; can effectively simplify field installation and reduce engineering cost.
Description
Technical Field
The invention relates to the technical field of building design, in particular to a tension split-flow type large-span space grid structure.
Background
With the improvement of economic and technical levels, people pursue a column-free large space inside buildings, so that the application range of domestic large-span and ultra-large-span space structures in recent years is very wide, such as: stadiums, exhibition halls, superstores, train stations, hangars, factory workshops, coal storage sheds, warehouses and other public buildings and industrial buildings.
The large-span and ultra-large-span spatial structure usually adopts a grid structure, a curved surface type reticulated shell structure, a three-dimensional truss structure, a three-dimensional arch structure, a string structure, a cable structure, a membrane structure and the like, and the most common structural form with low economic cost is the grid structure or the curved surface type reticulated shell structure, so that the large-span and ultra-large-span spatial structure is widely applied to various civil buildings and industrial buildings. The grid structure or the curved-surface type reticulated shell structure usually adopts two forms of welding hollow ball joints and bolt ball joints. The bolt ball joint form is deeply favored by the building structure industry due to the convenience in manufacturing and mounting, and is widely applied to various buildings.
In practical engineering application, the net rack or the net shell rod piece is usually subjected to larger tensile force and exceeds the maximum bolt bearing capacity specified in the national standard high-strength bolt for steel net rack bolt ball joint GB/T16939, so that the connection of the grid structure joint is forced to abandon the bolt ball joint and adopt a hollow ball joint welding form. The outstanding problems brought by the method are a series of problems of large on-site welding workload, difficult structure installation and positioning, more residual stress generated by welding, low construction efficiency, high on-site construction cost and the like.
Disclosure of Invention
In view of the above analysis, the present invention provides a tension split type large-span spatial grid structure, which can solve at least one of the following technical problems: the field welding workload is large, the structure is difficult to install and position, more residual stress is generated by welding, the construction efficiency is low, and the field construction cost is high.
The purpose of the invention is mainly realized by the following technical scheme:
a tension split-flow type large-span space grid structure is divided into a grid encryption area and a grid non-encryption area; the grid encryption area and the grid non-encryption area both comprise:
the grid structure upper chord assembly comprises a first grid structure upper chord and a second grid structure upper chord, and the first grid structure upper chord and the second grid structure upper chord are distributed in an orthogonal mode;
the grid structure web member is provided with a first end and a second end, and the first end of the grid structure web member is connected with the grid structure upper chord component;
the grid structure lower chord assembly is connected with the grid structure upper chord assembly through the second end of the grid structure web member;
the grid structure lower chord assembly of the grid encryption area comprises a first grid structure lower chord, a grid structure parallel lower chord and a grid structure non-parallel lower chord group; the first grid structure lower chords are arranged in parallel at intervals, the parallel lower chords of the grid structures are arranged between two adjacent first grid structure lower chords, and the grid structure non-parallel lower chord groups are intersected with the first grid structure lower chords and the parallel lower chords of the grid structures;
the grid structure web members of the grid encryption area comprise a first grid structure web member group, a second grid structure web member group and a third grid structure web member; the first end of the third grid structure web member is connected with the orthogonal point of the first grid structure upper chord and the second grid structure upper chord, and the second end of the third grid structure web member is connected with the intersection point of the grid structure parallel lower chord and the grid structure non-parallel lower chord group; the first end of the first grid structure web rod group and the first end of the second grid structure web rod group are connected with the orthogonal point of the upper chord of the first grid structure and the upper chord of the second grid structure, and the second end of the first grid structure web rod group and the second end of the second grid structure web rod group are connected with the connecting point of the parallel lower chord of the grid structure and the non-parallel lower chord of the grid structure; the first grid structure web group intersects with the extension line of the first end of the second grid structure web group.
In an alternative embodiment, the grid structure non-parallel lower chord group comprises a first grid structure non-parallel lower chord and a second grid structure non-parallel lower chord;
the non-parallel lower chord of the first grid structure is intersected with the non-parallel lower chord of the second grid structure.
In an alternative embodiment, the parallel lower chord of the grid structure coincides with an orthographic projection in the horizontal plane of the upper chord of the second grid structure.
In an alternative embodiment, the grid structure non-parallel lower chord coincides with an orthographic projection of the first or second grid structure web set in a horizontal plane.
In an alternative embodiment, the grid structure lower chord assembly of the grid clear zone comprises a first grid structure lower chord and a second grid structure lower chord that are the same as the first grid structure lower chord of the grid clear zone;
and the lower chord of the first grid structure of the grid non-encryption area is vertically intersected with the lower chord of the second grid structure.
In an alternative embodiment, the grid structure parallel lower chord and the grid structure non-parallel lower chord in the grid structure lower chord assembly of the grid encryption zone are discretely connected.
In an alternative embodiment, the grid structure parallel lower chords of the grid structure lower chord assembly of the grid encryption zone are connected with the grid structure non-parallel lower chords in a star arrangement.
In an optional embodiment, the carrying capacity of the grid encrypted region is greater than that of the grid unencrypted region.
In an alternative embodiment, the lattice structure further comprises lattice structure supports for supporting the tension split large-span spatial lattice structure.
In an alternative embodiment, the grid structure node connection mode in the tension split type large-span space grid structure is bolt-ball node connection.
In an alternative embodiment, the grid structure node connection modes are all bolt-ball node connections.
In an alternative embodiment, the tension split type large-span space structure can also be suitable for the in-chord force splitting on the grid structure.
Compared with the prior art, the tension split-flow type large-span space grid structure provided by the invention can at least realize the following beneficial effects:
the space grid structure provided by the embodiment of the invention has at least one of the following beneficial effects:
(1) The space grid structure provided by the embodiment of the invention can effectively reduce the internal force of the lower chord tension member of the space grid structure, solve the problem of insufficient bearing capacity of the maximum high-strength bolt, and can also degrade and select the high-strength bolt to fully ensure the bearing capacity and the safety and reliability.
(2) The space grid structure provided by the embodiment of the invention widens the application range of the space grid structure bolt ball node type structure span, the maximum structure span can reach 120m-140m, and a wider space is provided for engineering practice, and the application prospect is wide.
(3) The space grid structure provided by the embodiment of the invention can effectively simplify field installation, accelerate construction speed, reduce engineering cost and bring good social and economic benefits.
Drawings
FIG. 1 is a three-dimensional schematic diagram of a tension split type large-span space grid structure in an embodiment of the invention;
FIG. 2 is a schematic plan view of a tension split type large-span spatial grid structure according to an embodiment of the present invention;
FIG. 3 is a schematic plan view of a lower chord component of a lattice structure according to an embodiment of the present invention;
fig. 4 is a schematic plan view of a web member with a lattice structure according to an embodiment of the present invention.
Reference numerals are as follows:
100-grid encryption area, 101-grid non-encryption area; 1-a lattice structure winding assembly; 11-first lattice structure upper chord; 12-second lattice structure winding up; 2-web member with grid structure; 21-a first grid structure web member group; 22-a second set of lattice structure webs; 23-a third lattice structure web member; 3-a lattice structure bottom chord assembly; 30-first lattice structure lower chord; 31-grid structure parallel lower chord; 32-grid structure non-parallel lower chord group; 4-a grid structure support.
Detailed Description
Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
Referring to fig. 1 and fig. 2 together, the tension split type large-span spatial grid structure provided in the embodiment of the present invention is divided into a grid-encrypted region and a grid-unencrypted region, where the grid-encrypted region and the grid-unencrypted region both include: a grid structure upper chord component 1, a grid structure web member 2 and a grid structure lower chord component 3. The grid structure web member 2 is provided with a first end and a second end, and the first end of the grid structure web member 2 is connected with the grid structure upper chord component 1; the grid structure lower chord component 3 is connected with the grid structure upper chord component 1 through the second end of the grid structure web member 2.
The grid structure upper chord assembly 1 comprises a first grid structure upper chord 11 and a second grid structure upper chord 12, and the first grid structure upper chord 11 and the second grid structure upper chord 12 are distributed orthogonally.
Referring to fig. 3, the grid structure lower chord assembly 3 of the grid encryption zone includes a first grid structure lower chord 30, a grid structure parallel lower chord 31 and a grid structure non-parallel lower chord group 32; the first grid structure lower chords 30 are arranged in parallel at intervals, a grid structure parallel lower chord 31 is arranged between every two adjacent first grid structure lower chords 30, and a grid structure non-parallel lower chord group 32 is arranged in an intersecting manner with the first grid structure lower chord 30 and the grid structure parallel lower chord 31;
referring to fig. 1 and 4, the grid-structured web members 2 in the grid encrypted region include a first grid-structured web member group 21, a second grid-structured web member group 22, and a third grid-structured web member 23; the first end of the third grid structure web member 23 is connected with the orthogonal point of the first grid structure upper chord 11 and the second grid structure upper chord 12, and the second end is connected with the intersection point of the grid structure parallel lower chord 31 and the grid structure non-parallel lower chord group 32; the first ends of the first grid structure web rod group 21 and the second grid structure web rod group 22 are connected with the orthogonal point of the first grid structure upper chord 11 and the second grid structure upper chord 12 at a first angle, and the second end of the first grid structure web rod group 21 and the second end of the second grid structure web rod group 22 are connected with the connection point of the grid structure parallel lower chord 31 and the grid structure non-parallel lower chord group 32 at a second angle; the extension lines of the first ends of the first grid structure web group 21 and the second grid structure web group 22 are intersected at a point, and the first angle and the second angle are equal or complementary.
The grid structure provided by the embodiment of the invention has at least one of the following beneficial effects:
the space grid structure provided by the embodiment of the invention can effectively reduce the internal force of the lower chord tension member of the space grid structure, solve the problem of insufficient bearing capacity of the maximum high-strength bolt, and can also degrade and select the high-strength bolt to fully ensure the bearing capacity and the safety and reliability. The space grid structure provided by the embodiment of the invention widens the application range of the space grid structure in the form of bolt-ball joint structure span, the maximum structure span can reach 120m-140m, wider space is provided for engineering practice, and the application prospect is wide; the method can effectively simplify field installation, accelerate construction speed, reduce engineering cost and bring good social and economic benefits.
The grid structure provided by the embodiments of the present invention is further explained and illustrated by alternative embodiments below.
It should be noted that the spatial grid structure provided by the embodiment of the present invention is divided into a grid encryption region and a grid non-encryption region, and the size and the position of the grid encryption region can be selected according to the user's needs.
It should be noted that the large span provided by the embodiment of the present invention refers to a building (steel structure) with a span of 120m to 140 m.
The grid structure lower chord assembly 3 comprises at least one grid structure parallel lower chord group 31 and a grid structure non-parallel lower chord group 32 which are positioned on the same horizontal plane.
It should be noted that the grid structure lower chord assembly 3 provided in the embodiment of the present invention may set the number of the grid structure parallel lower chords 31 and the grid structure non-parallel lower chord groups 32 as required. The grid structure parallel lower chord 31 and the grid structure non-parallel lower chord group 32 are located on the same plane, the grid structure parallel lower chord 31 and the grid structure non-parallel lower chord group 32 are connected at a preset angle, and as an example, the connection angle between the grid structure parallel lower chord 31 and the grid structure non-parallel lower chord group 32 is 30 degrees, 45 degrees, 60 degrees, and the like, and other angles can be used. The number of the grid structure parallel lower chords 31 and the grid structure non-parallel lower chord groups 32 can be set according to actual needs.
It should be noted that, in at least one group of grid structure parallel lower chords 31 and grid structure non-parallel lower chords group 32, the number of grid structure parallel lower chords 31 is at least two, the two grid structure parallel lower chords 31 are arranged in parallel, and the grid structure non-parallel lower chords group 32 is located between the grid structure parallel lower chords 31 arranged in parallel. The number of the grid structure non-parallel lower chord groups 32 is set according to the bearing capacity of the grid structure, and can be a plurality.
The grid-structured parallel lower chord 31 is connected to the first end of the grid-structured web member 2 in a first direction. The grid structure non-parallel lower chord group 32 is connected with the grid structure parallel lower chord 31 along a second direction; the first direction intersects the second direction.
Furthermore, the grid structure parallel lower chord 31 and the grid structure web member 2 are not in the same horizontal plane, and the plane of the grid structure parallel lower chord 31 and the plane of the grid structure web member 2 are perpendicular to each other. Further, a grid-structured parallel lower chord 31 is connected to the first end of the grid-structured web member 2. The grid structure non-parallel lower chord group 32 and the grid structure parallel lower chord 31 are positioned on the same horizontal plane, and the connection angle between the grid structure non-parallel lower chord group 32 and the grid structure parallel lower chord 31 can be determined according to needs.
It will be appreciated that the parallel lower chords 31 of the lattice structure are perpendicular to the plane of the lattice structure web members 2, and therefore the first direction intersects the second direction perpendicularly.
The grid structure upper chord assembly 1 comprises a first grid structure upper chord 11 and a second grid structure upper chord 12, and the first grid structure upper chord 11 and the second grid structure upper chord 12 are distributed orthogonally.
The first grid structure upper chord 11 and the second grid structure upper chord 12 provided by the embodiment of the invention are orthogonally connected, and an orthogonal point is formed at the joint of the two. The number of the first grid structure upper chords 11 and the second grid structure upper chords 12 can be determined according to the load-bearing capacity. When the bearing capacity is large, the number of the upper chord 11 edges of the first grid structure and the number of the upper chord 12 of the second grid structure are large, and conversely, when the bearing capacity is small, the number of the upper chord 11 edges of the first grid structure and the number of the upper chord 12 of the second grid structure are small, which is not limited in the embodiment of the invention.
The lattice structure web member 2 includes a first lattice structure web member group 21, a second lattice structure web member group 22, and a third lattice structure web member 23.
The grid structure web member 2 is used for supporting the grid structure upper chord assembly 1 and connecting the grid structure upper chord assembly 1 and the grid structure lower chord assembly 3. The first end of the web member 23 of the third grid structure provided by the embodiment of the present invention is connected to the orthogonal point of the upper chord 11 of the first grid structure and the upper chord 12 of the second grid structure, and the second end is connected to the intersection point of the parallel lower chord 31 of the grid structure and the non-parallel lower chord group 32 of the grid structure. I.e. the third lattice structure web 23 may support the lattice structure upper chord assembly 1. The lattice structure upper chord assembly 1 and the lattice structure lower chord assembly 3 are connected by a first lattice structure web group 21 and a second lattice structure web group 22.
It should be noted that, when the bearing capacity of the spatial grid structure changes, the number of the grid structure parallel lower chord groups 31 and the grid structure non-parallel lower chord groups 32 in the grid structure lower chord assembly 3 needs to be increased, and at this time, the number of the first grid structure web member group 21, the second grid structure web member group 22 and the third grid structure web member 23 is also increased correspondingly, so as to improve the connection stability between the grid structure upper chord assembly 1 and the grid structure lower chord assembly 3.
Further, the extension lines of the first ends of the first and second mesh-structured web groups 21 and 22 intersect at a point. I.e. the first and second sets of lattice structure web members 21, 22 are located on either side of the third lattice structure web member 23. Further, the first end of the first lattice structure web member group 21 is connected to the third lattice structure web member 23, the third lattice structure web member 23 is connected to the orthogonal point of the first lattice structure upper chord 11 and the second lattice structure upper chord 12, the first end of the second lattice structure web member group 22 is connected to the third lattice structure web member 23, the second end of the first lattice structure web member group 21 is connected to the connection point of the lattice structure parallel lower chord 31 and the lattice structure non-parallel lower chord group 32 on the first side of the third lattice structure web member 23, the second end of the second lattice structure web member group 22 is connected to the connection point of the lattice structure parallel lower chord 31 and the lattice structure non-parallel lower chord group 32 on the second side of the third lattice structure web member 23, and at this time, the extension lines of the first ends of the first lattice structure web member group 21 and the second lattice structure web member group 22 intersect at one point.
For a first angle equal to or complementary to the second angle: when the first angle and the second angle are complementary, the included angle between the first grid structure web group 21 and the second grid structure web group 22 is 90 degrees, a right triangle is formed between the first grid structure web group 21, the second grid structure web group 22 and two adjacent third grid structure web members 23, and the connection has strong stability; when first angle and second angle are equal, first angle and second angle are 60 promptly, form equilateral triangle between first grid structure web member group 21 this moment, second grid structure web member group 22 and two adjacent third grid structure web members 23, compare the relation of connection under the other circumstances and have stronger stability, improved space lattice structure's spatial stability and bearing strength.
Further, the first lattice structure web group 21 provided by the embodiment of the present invention includes at least two lattice structure web members, and the second lattice structure web group 22 includes at least two lattice structure web members.
Preferably, the grid structure non-parallel lower chord group 32 includes a first grid structure non-parallel lower chord and a second grid structure non-parallel lower chord;
the non-parallel lower chord of the first grid structure is intersected with the non-parallel lower chord of the second grid structure.
The intersecting angle between the non-parallel lower chord of the first grid structure and the non-parallel lower chord of the second grid structure provided by the embodiment of the invention can be 45 degrees, can also be 30 degrees or 60 degrees, and the specific intersecting angle can be set according to the needs.
Preferably, the grid structure lower chord component of the grid non-encryption area comprises a first grid structure lower chord and a second grid structure lower chord which are arranged in a vertical intersecting mode.
Referring to fig. 3, it should be noted that the spatial grid structure provided in the embodiment of the present invention includes a grid-encrypted region and a grid-unencrypted region, and the embodiment of the present invention is an improvement on a portion to be encrypted, that is, a lower chord of a second grid structure in the grid-encrypted region is removed, and the grid-encrypted region is encrypted by a parallel lower chord 31 of the grid structure and a non-parallel lower chord of the grid structure, that is, the lower chord of the first grid structure is split by the parallel lower chord 31 of the grid structure, so as to achieve the purpose of reducing internal force of a component.
Preferably, the grid structure parallel lower chord 31 coincides with the orthographic projection in the horizontal plane of the second grid structure upper chord 12.
Further, when the number of the parallel lower chords 31 of the lattice structure is increased, the number of the web members 23 of the third lattice structure is also increased, so that the bearing capacity, the overall rigidity and the stability of the whole space lattice structure are improved.
Preferably, the grid structure non-parallel lower chord group 32 coincides with an orthographic projection in a horizontal plane of the first grid structure web group 21 or the second grid structure web group 22.
Further, when the number of the grid structure non-parallel lower chord groups 32 is increased, the number of the first grid structure web group 21 or the second grid structure web group 22 is also increased, so that the bearing capacity, the integral rigidity and the stability of the whole space grid structure are improved.
Preferably, the grid structure lower chord assembly 3 of the grid non-encryption area comprises a first grid structure lower chord 30 and a second grid structure lower chord which are the same as the first grid structure lower chord 30 of the grid encryption area;
the first lattice structure lower chord 30 perpendicularly intersects the second lattice structure lower chord.
According to the embodiment of the invention, local grid encryption is carried out according to the requirement of the tension bearing of the whole space grid structure, the internal force of the tension bearing rod piece of the lower chord assembly 3 of the grid structure can be effectively reduced, the problem of insufficient bearing capacity of the maximum high-strength bolt is solved, and the grid structure can completely adopt a bolt ball joint form. Meanwhile, the full bolt ball joint form can be realized so as to simplify the field installation, accelerate the construction speed and reduce the engineering cost.
Preferably, the grid structure parallel lower chord 31 and the grid structure non-parallel lower chord group 32 in the grid structure lower chord component 3 of the grid encryption area are discretely connected.
Namely, the plurality of grid structure non-parallel lower chord groups 32 and the grid structure parallel lower chord 31 are connected discretely, so that the connection reliability of the grid structure lower chord assembly 3 can be improved, and the bearing capacity and the connection reliability of the space grid structure can be improved.
Preferably, the grid structure parallel lower chord 31 and the grid structure non-parallel lower chord group 32 in the grid structure lower chord component 3 of the grid encryption area are arranged in a star shape, so that the bearing capacity and the connection reliability of the space grid structure can be improved.
Preferably, the bearing capacity of the grid encryption area is greater than that of the grid non-encryption area.
Preferably, the grid structure further comprises a grid structure supporting part 4, and the grid structure supporting part 4 is used for supporting the tension split type large-span space grid structure. It should be noted that the position of the grid structure supporting portion 4 provided by the embodiment of the present invention is flexibly set according to the position of the grid structure with split tension in the final application.
As an example, the lattice structure support part 4 may be connected to the orthogonal points of the first lattice structure upper chord 11 and the second lattice structure upper chord 12 located at the outermost layers.
Preferably, the grid structure node connection mode in the tension split-flow type large-span space grid structure is bolt-ball node connection.
Preferably, the tension split-flow type large-span space grid structure is also suitable for the situation of split-flow of the internal force of the upper chord of the grid structure.
It should be noted that the connection between the grid structure upper chord assembly 1 and the grid structure web member 2 and the connection between the grid structure web member 2 and the grid structure lower chord assembly 3 provided by the embodiment of the present invention are all bolt-sphere joint connections, which can effectively solve the problem of insufficient bearing capacity of the maximum high-strength bolt.
It should be noted that the spatial grid structure provided by the embodiment of the present invention is a local improvement on a tension-split large-span spatial grid structure, that is, the spatial grid structure provided by the embodiment of the present invention can be used in a required place, and further, the grid structure upper chord assembly, the grid structure web member, and the grid structure lower chord assembly provided by the embodiment of the present invention are used in a required local area, and the area not required can be conventionally set.
The space grid structure provided by the embodiment of the invention is beneficial to widening the application range of the bolt-ball joint type structure span of the space grid structure, can enable the structure span to reach 120-140 m, provides a wider space for engineering practice, provides a novel solution for the engineering practice, and has a wide application prospect.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also included in the scope of the present invention.
Claims (10)
1. A tension split-flow type large-span space grid structure is characterized in that the grid structure is divided into a grid encryption area and a grid non-encryption area; the grid encryption area and the grid non-encryption area both comprise:
the grid structure upper chord assembly comprises a first grid structure upper chord and a second grid structure upper chord, and the first grid structure upper chord and the second grid structure upper chord are distributed in an orthogonal mode;
the grid structure web member is provided with a first end and a second end, and the first end of the grid structure web member is connected with the grid structure upper chord component;
the grid structure lower chord assembly is connected with the grid structure upper chord assembly through the second end of the grid structure web member;
the grid structure lower chord assembly of the grid encryption area comprises a first grid structure lower chord, a grid structure parallel lower chord and a grid structure non-parallel lower chord group; the lower chords of the first grid structures are arranged in parallel at intervals, the parallel lower chords of the grid structures are arranged between the lower chords of two adjacent first grid structures, and the non-parallel lower chord groups of the grid structures are intersected with the lower chords of the first grid structures and the parallel lower chords of the grid structures;
the grid structure web members of the grid encryption area comprise a first grid structure web member group, a second grid structure web member group and a third grid structure web member; the first end of the third grid structure web member is connected with the orthogonal point of the first grid structure upper chord and the second grid structure upper chord, and the second end of the third grid structure web member is connected with the intersection point of the grid structure parallel lower chord and the grid structure non-parallel lower chord group; the first end of the first grid structure web rod group and the first end of the second grid structure web rod group are connected with the orthogonal point of the upper chord of the first grid structure and the upper chord of the second grid structure, and the second end of the first grid structure web rod group and the second end of the second grid structure web rod group are connected with the connecting point of the parallel lower chord of the grid structure and the non-parallel lower chord of the grid structure; the first grid structure web group intersects with the extension line of the first end of the second grid structure web group.
2. The tension-split large-span spatial grid structure according to claim 1, wherein the grid structure non-parallel lower chord group comprises a first grid structure non-parallel lower chord and a second grid structure non-parallel lower chord;
the non-parallel lower chord of the first grid structure is intersected with the non-parallel lower chord of the second grid structure.
3. The tension-split large-span spatial grid structure according to claim 1, wherein the parallel-shaped lower chord of the grid structure coincides with the orthographic projection of the upper chord of the second grid structure in the horizontal plane.
4. The tension split large-span spatial grid structure according to claim 1, wherein the non-parallel lower chord group of the grid structure coincides with an orthographic projection of the first or second grid structure web group in a horizontal plane.
5. The tension-split large-span spatial grid structure according to claim 1, wherein the grid structure lower chord assembly of the grid non-encrypted region comprises a first grid structure lower chord and a second grid structure lower chord that are the same as the first grid structure lower chord of the grid encrypted region;
and the lower chord of the first grid structure of the grid non-encryption area is vertically intersected with the lower chord of the second grid structure.
6. The tension-split large-span spatial grid structure according to claim 1, wherein the parallel lower chords of the grid structure in the grid structure lower chord assembly of the grid encryption zone are discretely connected with the non-parallel lower chord group of the grid structure.
7. The tension-shunting long-span spatial grid structure according to claim 1, wherein the parallel lower chords of the grid structure in the grid structure lower chord assembly of the grid encryption zone are connected with the non-parallel lower chord groups of the grid structure in a star arrangement.
8. The tension-split large-span spatial grid structure according to claim 1, wherein the load-bearing capacity of the grid-encrypted region is greater than the load-bearing capacity of the grid-unencrypted region.
9. The tension-split large-span spatial grid structure according to claim 1, further comprising a grid structure support for supporting the tension-split large-span spatial grid structure.
10. The tension split type large-span spatial grid structure according to claim 1, wherein the grid structure node connection mode in the tension split type large-span spatial grid structure is bolt-ball node connection;
the tension split-flow type large-span space grid structure is also suitable for splitting the internal force of the upper chord of the grid structure.
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Citations (16)
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| CN115162523B (en) | 2022-11-22 |
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