CN101597930A

CN101597930A - Flat plate framed structure minor structure face of cylinder crossed space truss giant grid structure

Info

Publication number: CN101597930A
Application number: CNA2009100437474A
Authority: CN
Inventors: 贺拥军; 周绪红
Original assignee: Hunan University
Current assignee: Hunan University
Priority date: 2009-06-23
Filing date: 2009-06-23
Publication date: 2009-12-09

Abstract

The invention discloses a kind of flat plate framed structure minor structure face of cylinder crossed space truss giant grid structure.Comprise agent structure and the minor structure two-stage that is arranged in the agent structure.Described agent structure is to constitute the face of cylinder type macrolattice structure that size of mesh opening is 10～30m by laterally intersecting mutually with the longitudinal stereoscopic truss, described minor structure is common double-deck flat plate framed structure, minor structure is embedded in the macrolattice in the mode of four angle point supportings or peripheral multi-point support, forms the form of structure that a kind of macrolattice overlaps little grid.The present invention can overcome the problem of strut buckling effectively, can increase substantially the integral rigidity and stability of structure; Can save steel using amount, reduce construction costs.Can after produce in factory processing, be transported to assembled on site and become overall structure, can significantly reduce the on-site installation work amount, shorten the construction period.Super-span space net shell roof structure applicable to 150～200m.

Description

Flat plate framed structure minor structure face of cylinder crossed space truss giant grid structure

Technical field

The present invention relates to builing industry space structures field, specifically a kind of flat plate framed structure minor structure face of cylinder crossed space truss giant grid structure that is applicable to the super-span roof system.

Background technology

Along with the development of society, large span spatial structure must develop to super-span.Double-deck cylindrical latticed shell structure is to use more a kind of form of structure in the present large-span space structure, and this double-deck cylindrical latticed shell structure some unavoidable problem can occur along with the further increase of span, as when adopting 5m with interior normal length rod member, structure can easily cause whole unstability because of thick striding than too little; And rod member easily causes strut buckling when long because of internal force is excessive, and the steel using amount increase that causes therefrom etc.There is document analysis to show, it is also not obvious to the effect that improves the structural entity service behaviour to increase the number of plies, the more important thing is that it is infeasible adopting multilayer form to increase structural span with the restriction that breaks through internal force, rod member and node are sharply increased, and node too much makes the processing structure complicated more because of the rod member that connects.

Summary of the invention

The objective of the invention is to overcome deficiency of the prior art, a kind of flat plate framed structure minor structure face of cylinder crossed space truss giant grid structure of super-span is provided.To realize effectively breaking through the big internal force of rod member and pressure bar stabilization and structural entity stable restriction, can reduce steel using amount again, reduce construction costs.

Technical scheme of the present invention is: comprise agent structure and the minor structure two-stage that is arranged in the agent structure, it is characterized in that, described agent structure is to constitute the face of cylinder type macrolattice structure that size of mesh opening is 10～30m by laterally intersecting mutually with the longitudinal stereoscopic truss, described minor structure is common double-deck flat plate framed structure, minor structure is embedded in the macrolattice in the mode of four angle point supportings or peripheral multi-point support, forms the form of structure that a kind of macrolattice overlaps little grid.

Described space truss constitutes triangular section by two parallel upper chords, a lower chord, is provided with some cross bars and hound between two upper chords, is provided with web member between upper chord and lower chord.

Describedly laterally be connected by welded hollow spherical joints with the longitudinal stereoscopic truss, each zone of intersection comprises four wind up node and lower-chord panel points.

Described cross bar equates with the spacing of two parallel upper chords with the spacing of adjacent crossbars, constitutes the square grid that winds up, and described hound is located in the square net that winds up between per two cross bars.Stability with the grid that keeps winding up.

Upper and lower chord member, web member, cross bar and the hound of described space truss are round steel pipe, are welded to connect by tubular joint between each rod member.

The form of structure that this macrolattice of the present invention overlaps little grid can overcome the problem of strut buckling effectively, the integral rigidity that can increase substantially structure with stability, avoid strut buckling.Be welded to connect by tubular joint between inner each rod member of space truss, can avoid adopting any connector.The load of total is born by relatively sparse and grand agent structure, each minor structure is only born the load in the corresponding macrolattice scope, thereby the minor structure internal rod can save steel using amount by minimal construction requirement configuration substantially, reduced construction costs.In addition, space truss and flat plate framed structure minor structure all can process at produce in factory and be the quantity basic element of character seldom, are transported to assembled on site then and form overall structure, will significantly reduce the on-site installation work amount, shorten the construction period.Super-span space net shell roof structure applicable to 150～200m.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the A-A sectional view of Fig. 1;

Fig. 3 is a triangular-section space truss beam schematic diagram;

Fig. 4 is the A-A sectional view of Fig. 3;

Fig. 5 is a space truss zone of intersection organigram;

Fig. 6 is embedded in the macrolattice schematic diagram for embodiment 1 minor structure in four angle point supporting modes;

Fig. 7 is the A-A sectional view of Fig. 6;

Fig. 8 is embedded in the macrolattice schematic diagram for embodiment 2 minor structures in peripheral multi-point support mode;

Fig. 9 is the B-B sectional view of Fig. 8.

The specific embodiment

Embodiment 1:

In conjunction with Fig. 1 and Fig. 2:

Total is made of with the minor structure II two-stage that is arranged in the agent structure agent structure I, described agent structure I a kind ofly intersects the face of cylinder macrolattice structure that constitutes by horizontal space truss 1 and longitudinal stereoscopic truss 2, its macrolattice is of a size of 10～30m, described minor structure is common double-deck flat plate framed structure, be embedded in the macrolattice, form the form of structure that a kind of macrolattice overlaps little grid, the load of total is born by relatively sparse and grand agent structure.

In conjunction with Fig. 3 and Fig. 4: laterally space truss 1 and longitudinal stereoscopic truss 2 are by two parallel upper chords 3, lower chord 4 formation triangular sections, between upper chord and lower chord, be provided with web member 5, between two upper chords, be provided with some cross bars 6, the spacing of the parallel upper chord 3 with two of the spacing of adjacent two cross bars equates, constitute the square grid that winds up, described hound 7 is located in the square net that winds up between per two cross bars.The above upper chord 3, lower chord 4, web member 5, cross bar 6 are round steel pipe with hound 7; Web member, cross bar and hound all adopt tubular joint directly to be welded on the lower chord.

In conjunction with Fig. 5: laterally space truss 1 and longitudinal stereoscopic truss 2 are connected by welded hollow spherical joints, and each zone of intersection comprises four wind up node 8 and lower-chord panel points 9.

In conjunction with Fig. 6 and Fig. 7: the minor structure II of present embodiment is embedded in the macrolattice of agent structure I with four angle points, 10 support patterns.

Embodiment 2:

In conjunction with Fig. 8 and Fig. 9: present embodiment as different from Example 1: the minor structure II of present embodiment is embedded in the macrolattice of agent structure I with peripheral multiple spot 11 support patterns.

Claims

1. flat plate framed structure minor structure face of cylinder crossed space truss giant grid structure, comprise agent structure and the minor structure two-stage that is arranged in the agent structure, it is characterized in that, described agent structure is to constitute the face of cylinder type macrolattice structure that size of mesh opening is 10～30m by laterally intersecting mutually with the longitudinal stereoscopic truss, described minor structure is common double-deck flat plate framed structure, minor structure is embedded in the macrolattice in the mode of four angle point supportings or peripheral multi-point support, forms the form of structure that a kind of macrolattice overlaps little grid.

2. flat plate framed structure minor structure according to claim 1 face of cylinder crossed space truss giant grid structure, it is characterized in that, described space truss constitutes triangular section by two parallel upper chords, a lower chord, between two upper chords, be provided with some cross bars and hound, between upper chord and lower chord, be provided with web member.

3. flat plate framed structure minor structure according to claim 1 face of cylinder crossed space truss giant grid structure, it is characterized in that, describedly laterally be connected by welded hollow spherical joints with the longitudinal stereoscopic truss, each zone of intersection comprises four wind up node and lower-chord panel points.

4. flat plate framed structure minor structure according to claim 2 face of cylinder crossed space truss giant grid structure, it is characterized in that, described cross bar equates with the spacing of two parallel upper chords with the spacing of adjacent crossbars, constitute the square grid that winds up, described hound is located in the square net that winds up between per two cross bars.

5. flat plate framed structure minor structure according to claim 2 face of cylinder crossed space truss giant grid structure, it is characterized in that, upper and lower chord member, web member, cross bar and the hound of described space truss are round steel pipe, are welded to connect by tubular joint between each rod member.