KR20080096934A - Roof pep truss of large structure - Google Patents

Abstract

A roof compound truss is provided to seem grand of simple truss and to reduce the load of lower part in designing. A roof compound truss comprises a simple truss which connects a vertical member and a moving member between top member and bottom member, a three-dimensional truss dispersing the load of simple truss, a connector which concentrates the connection part between the three-dimensional truss and simple truss. The three-dimensional truss is formed so that both ends of the simple truss are adjacent and the top and bottom member and four connectors are interconnected.

Description

Roof pep truss of large structure

Figure 1a is an illustration of the load action in a simple beam

Figure 1b is a dynamic diagram of the load action in a simple beam

2 is a dynamic diagram of a simple beam using a truss

3 is a configuration diagram of a conventional simple truss

4 is a configuration diagram of a conventional three-dimensional truss

5 is a plan view showing the overall configuration of the present invention composite truss

6 is a plan view of a portion of FIG.

7 is a perspective view of FIG. 6

8 is an enlarged perspective view taken from one side of FIG.

9 is a block diagram of a connecting portion for connecting the composite truss of the present invention

Explanation of symbols on the main parts of the drawings

10; simple truss 11, 12; up and down current

13; vertical 14;

20; stereo truss 21; all-round connecting material

21a; high current 21b; low current

21c; stock 30; connector

40; Holding

The present invention relates to a truss for constituting the roof structure of a large structure, in particular the outer periphery as a three-dimensional truss structure and a simple truss structure inside the combination of different systems to show the magnificence of the simple truss in appearance and design It reduces the burden on the lower structure, and can save unnecessary members by designing the member according to the actual stress distribution by the three-dimensional truss structure.A single member of the simple truss and several members of the three-dimensional truss combine to create a uniform and unique indoor part. The present invention relates to a roof composite truss of a large structure, which is intended to provide an economical truss that can simplify the construction and reduce the construction cost by creating a smooth space and creating a beautiful space.

Generally, various flat trusses or three-dimensional truss connection methods are used to construct a roof structure of a large building, but in the present invention, a composite truss using a connection method between a connector and a pipe will be described.

These roof three-dimensional trusses are mostly installed in gymnasiums, airport buses, descents, building entrances, etc., and have a basic structure to serve as a roof by covering the three-dimensional trusses with glass plates and panels.

Generally, trusses include planar trusses, space trusses, and synthetic trusses.

       The planar truss is a triangular structure made of hinged joints such that all members are not bent, as shown in FIGS. 1A and 1B, and each member is made to receive only axial force (tensile and compression).

In the beam type of the structure, the beams are broken when a load is applied. At this time, the bending force of the upper and lower end is the largest and the middle is small. In other words, there is still room or waste in the middle of the beam. So to get rid of this waste, you can also use columns to erect the beams and hit the lines to reinforce the beams and use them as large bridges. In this way, the reinforcement of the beam to eliminate waste is the beginning of the truss as shown in FIG.

The structure composed of triangular space by connecting both ends of two or more elongated linear members with a rotating end, that is, the truss is composed of triangular unit space is because when the members are composed of triangular space This is because it becomes a stable form where deformation does not occur more easily in space. When a load is applied to the truss, the compressive force is applied to the top chord, and the tension force is applied to the bottom chord, which suppresses the spread of sand.

If such a member is assembled into a truss having a triangular spherical shape, the distance between the upper and lower portions of the beam cross section can be increased without any increase in its own weight, and the advantage of the triangular structure is that the deformation is overwhelmingly small, so the long span structure Widely available in

The development of high-strength and high-performance structural materials in terms of building structures, weight reduction, long span, stiffness, rigidity control, collapse control, and increase in construction demand and reduction of construction functions in terms of structure. Therefore, a variety of factors are involved, such as prefabrication of structural elements aimed at reducing manpower and improving labor productivity, air shortening, and construction cost reduction.

The simple truss is economically burdened by unnecessary designation due to excessive design weight due to uniform member selection as shown in FIG. 3. In addition, the installation time in the field is disadvantageous in terms of safety and quality, and the structural and large structures are very disadvantageous for transportation and installation equipment.

The solid truss is a structural network using a triangle to create a three-dimensional shape as shown in FIG. At least three members that do not lie in the same plane are needed to avoid moving in any direction from point P as shown in Figure 1. This basic stable three-dimensional structure is a tripod.

Pic 1

The triangle is the only stable geometric shape with structural advantages. Since the triangle has three legs, it is impossible to change the shape on the plane. Squares, rectangles, hexagons, and octagons change shape under load. These capabilities and advantages of triangles have created the efficiency of material use in all solid trusses, whether single or multiple planes.

The solid truss only needs to add these tripods together. The same conclusion was found by the development of the spatial truss extracted from the tetrahedron, which is the basic unit. By simply adding a tripod, a stable self-sufficient unit with four nodes and six members is achieved. This tetrahedron, like a triangle in a planar structure, is the most fundamentally stable spatial unit. The struts and node members have the property of distributing and sharing loads to create a system that is axial and indestructible. When one member reaches its limit in the organization of such a member, the other member shares more load.

The triangular organization of a solid truss creates a geometric unit that cannot be deformed. To change the geometry, the joining or the length of the member must change.

Three-dimensional trusses are essentially forced only by axial forces acting as tensile or compressive forces. Often the space frame element is designed to accept two kinds of forces, in order to cope with changing loads, one for tension and the other for compression. All rod elements are usually cylindrical, which is a practical method. Plane trusses require a kind of brace to avoid the risk of buckling off the same plane in the truss member. In more than one plane, the triangular state does not have this drawback. As a result, the solid truss (space frame) is strong in all directions, especially when the number of members makes it quite negative. In full triangulation, if all loads are applied to the nodes, they are performed by simple compression or tension in each member of the truss.

To summarize the structural principle, the beam is usually made of trusses in wooden or steel structures. If so, the Top Chord and the Bottom Chord should use members that can withstand their respective forces, and connect them with a diagonal chord. In other words, the compressive force acts on the upper chord, the yarn is suppressed from opening, and the tensile force acts on the lower chord.

The three-dimensional truss can be regarded as a slab made of truss by continuously connecting the tetrahedron according to the above-described structural principle. Just as this slab is forced in two directions, so is the solid truss. This reduces the thickness of a truss and eliminates the need for a column in the middle, making it a suitable structural system for building structures requiring large spaces.

The solid truss is a continuum of three-dimensional modules such as interconnected crystals, and is complicated and lacks in construction and economically disadvantageous, while providing a magnificent and rigid structure.

In addition, most of the members of the simple truss or three-dimensional truss used H-beams or L-shaped steels, but since they have to be welded in the field, they are disadvantageous in terms of quality and safety, and are inferior in construction properties. There was a flaw of enlargement.

Therefore, at present, the truss structure using pipes is mainly used without using the above-described H beam or L-shaped steel, but the transportation and installation equipment is simple, and the appearance is more elegant than the magnificent atmosphere of the truss. Difficulties in the construction and work involved in welding, and the construction period is prolonged if the production is wrong.

Therefore, the three-dimensional truss truss connection method of the large structure using the pipe is to be connected directly to the connector and the pipe in the field, the conventional three-dimensional truss connection method is constructed by assembling the pipe to form a triangular connection structure in all directions for one connector And there is the advantage of easy operation, but there is a problem that the increase in construction cost and construction period is a factor of excessive waste of pipes and connector members.

The present invention aims to develop a roof composite truss (PEP TRUSS) of a large structure that supplements the advantages and disadvantages of the simple truss and three-dimensional truss.

The present invention shows the grandeur of the simple truss in appearance by combining different systems with a three-dimensional truss structure on the outer periphery and a simple truss structure on the inside, reducing the burden on the substructure during the design, the actual stress by the three-dimensional truss structure The member design according to the distribution can reduce unnecessary members, and the single member of the simple truss and the multiple members of the three-dimensional truss can be combined to create a uniform and unique indoor part smoothly and create a beautiful space. The purpose is to provide a roof composite truss of economical large-scale structures that can reduce the construction cost.

A roof composite truss of a large structure for achieving the object of the present invention, the simple truss configured by connecting the vertical material and yarn between the upper and lower chords of the pipe; The upper and lower chords and the various four-side connecting members are interconnected so that both ends of neighboring simple trusses are formed in a triangle so that the ends of neighboring simple trusses are triangulated at intervals, so that the load of the simple truss is distributed and distributed. A three-dimensional truss and a connector for converging the connection portion of the simple truss and the three-dimensional truss to one connection point; It is a feature of the present invention.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

5 is a plan view showing the overall configuration of the composite truss of the present invention, Figure 6 is a plan view of a part of Figure 5, Figure 7 is a perspective view of Figure 6, Figure 8 is an excerpt of one side of Figure 7 9 is an enlarged perspective view, and Figure 9 is a block diagram of a connecting portion for connecting the composite truss of the present invention.

Roof composite truss of the large structure of the present invention is composed of a simple truss 10 and a three-dimensional truss 20 as shown in FIG.

The simple truss 10 is arranged at a predetermined interval to be composed of a structure of the roof, and connected to cross each other in the horizontal and vertical directions.

The simple truss 10 is configured by connecting the vertical member 13 and the yarn 14 between the upper and lower chords 11 and 12 of the pipe.

The three-dimensional truss 20 is connected to both ends of the neighboring simple truss 10, the upper and lower chords 11 and 12 and a plurality of four-side connecting member 21 are connected to each other so as to form a triangle is simple The load of the truss 10 is distributed.

The four-side connecting member 21 is horizontally arranged on the upper side of the upper chord 21a, and horizontally arranged on the lower side of the four-side connecting member 21, between the lower chord 21b, the upper chord 21a and the lower flame retardant 21b. And the simple truss 10 and the three-dimensional truss 20 is connected to each other to form an inclined triangle between the upper and lower truss 20 is generally composed of a yarn (21c).

Each connecting portion of the simple truss 10 and the three-dimensional truss 20 is connected to the connector 30 so as to be collected at one connection point.

It is preferable to use the utility model registration application No. 2007-2360 (connector of the three-dimensional truss of the roof of the large structure), the connector 30 is the inventor of the present application, as shown in Figure 9, in addition to the members that can connect the pipes You can use any ramen.

Both sides of the three-dimensional truss 20 is installed at equal intervals in the set position to support the roof structure consisting of the truss, which is simple after the post 40 is arranged in a predetermined position by a conventional construction method The truss 10 and the three-dimensional truss 20 will be constructed.

The present invention is a composite truss (PEP TRUSS) combined in various ways to exhibit a composite synergistic effect that is not realized in a single material or in a member-structure system in the structure. In other words, the composite truss of the present invention is a combination of different systems using a three-dimensional truss structure of the outer periphery and a simple truss structure inside.

 The compression force is applied to the upper chord of the simple truss 10 and the tension force is applied to the lower chord so that the truss is bent downward. At this time, the shear force and the bending moment of bending the truss are the largest in the lower chord and the lower chord acts smaller than the lower chord, but the load is distributed by the material installed in the triangular structure to reinforce the upper and lower chords of the truss.

At this time, the struts 40 are directly connected to both ends of the upper chord 11 of the simple truss 10 so that the load acting on the upper chord 11 is distributed to the simple truss 10 and the three-dimensional truss 20.

The three-dimensional truss 20 is a structurally safe truss structure by combining a single member of the simple truss and several members of the three-dimensional truss in a manner that is connected from one branch to several branches in a triangular structure principle.

That is, the upper and lower chords 11 and 12 of the simple truss 10 and the various four-side connecting members 21 of the three-dimensional truss 20 are connected to each other so that the load acting on the simple truss 10 is simple truss. It is to be distributed and distributed to the (10) and the three-dimensional truss 20 to have a structure of a solid synthetic truss.

Therefore, by showing the magnificence of the simple truss in appearance and reducing the burden on the substructure during design, unnecessary members can be saved by designing the member according to the actual stress distribution, and the composite truss is based on the triangular structure principle. The single member of the simple truss and the multiple members of the three-dimensional truss can be combined in four ways to create a uniform and unique indoor area, create beautiful spaces, and simplify construction and reduce construction costs. It can provide economical truss.

In addition, the weight and weight of the simple truss and three-dimensional truss has the advantage of easy transportation and installation equipment.

As described above, the present invention shows the magnificence of the simple truss in appearance by combining different systems with a simple truss structure at the outer periphery and a simple truss structure, and reduces the burden on the lower structure when designing, The member design according to the actual stress distribution can save unnecessary members, and the single member of the simple truss and the multiple members of the three-dimensional truss can be combined to create a uniform and unique indoor part smoothly and create a beautiful space, simplifying construction. And, there is an effect that can provide an economical composite truss that can reduce the construction cost.

Claims (1)

In constructing the truss for constructing the roof structure of the large structure on the shore, A simple truss configured by connecting the vertical member and the yarn between the upper and lower chords of the pipe; The upper and lower chords and the various four-side connecting members are interconnected so that both ends of neighboring simple trusses are formed in a triangle so that the ends of neighboring simple trusses are triangulated at intervals, so that the load of the simple truss is distributed and distributed. A three-dimensional truss and a connector for converging the connection portion of the simple truss and the three-dimensional truss to one connection point; Roof composite truss of a large structure, characterized in that consisting of.

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