A kind of no purlin grid structure with bolt-sphere joints structure and preparation method thereof
Technical field
The present invention relates to space grid structure, particularly, relate to a kind of no purlin grid structure with bolt-sphere joints structure and preparation method thereof.
Background technology
Advantages such as spatial mesh structure is light with its dead load, the leap spacial ability is strong have obtained great promotion and application in industrial construction and civilian construction.Spatial mesh structure commonly used at present generally adopts bolted spherical node or welded spherical node, last lower chord and web member are generally selected round steel pipe for use, pass through bolted spherical node, connect by ball node between the rod member, form the spatial mesh structure system, set up purlin then above the network, lay roof panel at last.Along with in application in engineering, this structural system exposes some self deficiency, mainly shows the following aspects:
1, the node of this structural system and member are respectively at produce in factory, carry out assembly unit then at the scene, so the site work amount are big, and the member kind is many, and network member, purlin and node are arranged, and the on-the-spot installation cycle is longer, and construction cost is higher.
2, adopt the purlin structure to carry out setting up of roof panel, increased the kind and the quantity of member, the waste steel.
Summary of the invention
For overcoming the deficiency of above-mentioned existing space network technical elements, the invention provides a kind of no purlin bolted spherical node spatial mesh structure and preparation method thereof.
Technical scheme of the present invention is as follows:
No purlin grid structure with bolt-sphere joints structure comprises upper chord, web member, lower chord and bolted spherical node, and bolted spherical node is made up of high-strength bolt, sleeve, solid sphere and pin; Upper chord, web member and lower chord axis are by the solid sphere centre of sphere; Upper chord, web member and lower chord all have conehead and enclosing structure in the end, shrouding is reserved the high-strength bolt hole, the high-strength bolt screw rod passes the reserving hole of shrouding, by the method for twisting sleeve high-strength bolt is screwed into the solid sphere of reserving screwed hole, and the nut part is kept off in rod member inside by shrouding; Upper chord adopts square steel pipe or rectangular steel pipe, and upper chord is two limit levels, two limits vertically are provided with, and the bolted spherical node diameter that connects upper chord is not more than the vertical length of side of upper chord;
Preferably, web member is square steel pipe, rectangular steel pipe or round steel pipe;
Preferably, the lower edge rod member is square steel pipe, rectangular steel pipe or round steel pipe;
Preferably, space truss structure is provided with roof panel, and roof panel and upper chord are connected and fixed by rivet;
Preferably, rivet is squeezed on roof panel top and upper chord is riveted together or weld angle steel in advance in upper chord one side, and the angle steel of roof panel and upper chord sidepiece is riveted together;
Preferably, the position of upper chord in the grid structure with bolt-sphere joints structure is avoided in the junction between the roof panel, and adopts the ointment filleting;
Preferably, it is base-material with petroleum bitumen that ointment adopts a kind of, adds material modified, thinner, the formulated black paste caulking material of filler;
The preparation method of no purlin grid structure with bolt-sphere joints structure, adopt method in bulk, piecemeal that method or whole assembling lift-up method are installed, by bolt sphere upper chord, web member and lower chord are connected into the grid structure with bolt-sphere joints structure, lay roof panel then, by rivet roof panel and grid structure with bolt-sphere joints structure are linked into an integrated entity again, the position of upper chord in the grid structure with bolt-sphere joints structure is avoided in junction between the roof panel, and adopts the ointment filleting, forms a kind of no purlin grid structure with bolt-sphere joints structure.
The invention has the beneficial effects as follows by the upper surface of upper chord in grid structure with bolt-sphere joints and directly lay roof panel, saved the purlin construction measure, saved steel, therefore reduced the site operation program simultaneously, reduced construction period, saved construction cost.Be particularly suitable in spatial mesh structure, using.
Description of drawings
Fig. 1 is the no purlin grid structure with bolt-sphere joints structural representation that has roof panel of the present invention;
Fig. 2 is the partial schematic diagram of no purlin grid structure with bolt-sphere joints structure of the present invention;
Fig. 3 is a no purlin grid structure with bolt-sphere joints structural representation of the present invention;
Fig. 4 is the no purlin grid structure with bolt-sphere joints structure roof panel of roof panel and the schematic diagram that the direct rivet of upper chord links into an integrated entity of having of the present invention;
Fig. 5 is the no purlin grid structure with bolt-sphere joints structure roof panel of roof panel and the schematic diagram that the direct rivet of upper chord is connected to form rivet hole of having of the present invention;
Fig. 6 welds the schematic diagram of angle steel in advance for the no purlin grid structure with bolt-sphere joints structure upper chord that has roof panel of the present invention;
Fig. 7 welds the schematic diagram that the angle steel rivet links into an integrated entity in advance for no purlin grid structure with bolt-sphere joints structure roof panel and the upper chord that has roof panel of the present invention;
Fig. 8 welds the schematic diagram that the angle steel rivet is connected to form rivet hole in advance for roof panel and the upper chord that has the no purlin grid structure with bolt-sphere joints structure of roof panel of the present invention;
Fig. 9 is the roof panel of the no purlin grid structure with bolt-sphere joints structure that has a roof panel of the present invention and partial result figure after upper chord is connected;
Figure 10 is that the thin portion between the roof panel that has the no purlin grid structure with bolt-sphere joints structure of roof panel of the present invention connects handles schematic diagram;
Figure 11 is the bolted spherical node of the no purlin grid structure with bolt-sphere joints structure that has a roof panel of the present invention and the detail structure schematic diagram of Rod end.
Among the figure, 1, upper chord; 2, roof panel; 3, bolted spherical node; 4, conehead; 5, shrouding; 6, rivet hole; 7, rivet hole; 8, rivet; 9, angle steel; 10, rivet hole; 11, web member; 12, lower chord; 13, ointment; 14, grid structure with bolt-sphere joints; 15, sleeve; 16, solid sphere; 17, high-strength bolt; 18, pin.
The specific embodiment
Shown in Fig. 1-11, grid structure with bolt-sphere joints 14 is formed by connecting by bolted spherical node 3 by upper chord 1, web member 11 and lower chord 12, and bolted spherical node 3 is made up of sleeve 15, solid sphere 16, high-strength bolt 17 and pin 18; Upper chord, web member and lower chord axis are by the solid sphere centre of sphere; Upper chord, web member and lower chord all have conehead 4 and shrouding 5 in the end, shrouding is reserved the high-strength bolt hole, the high-strength bolt screw rod passes the reserving hole of shrouding, by the method for twisting sleeve high-strength bolt is screwed into the solid sphere of reserving screwed hole, and the nut part is kept off in rod member inside by shrouding; Upper chord adopts square steel pipe or rectangular steel pipe, and upper chord is two limit levels, two limits vertically are provided with, and the bolted spherical node diameter that connects upper chord is not more than the vertical length of side of upper chord; Web member is square steel pipe, rectangular steel pipe or round steel pipe; The lower edge rod member is square steel pipe, rectangular steel pipe or round steel pipe; Space truss structure is provided with roof panel 2, roof panel 2 is connected with two kinds of embodiments with grid structure with bolt-sphere joints 14: (1), the direct roof panel 2 of laying above the upper chord in grid structure with bolt-sphere joints 14 1, adopt rivet 8 directly roof panel 2 to be connected with upper chord 1 then, and then forming a kind of no purlin grid structure with bolt-sphere joints structure (as shown in Figure 4), the upper chord 1 in this process in the grid structure with bolt-sphere joints 14 forms on rivet hole 6 and the roof panel 2 and becomes rivet hole 7 (as shown in Figure 5); (2), weld angle steel 9 (as shown in Figure 6) on the upper chord in grid structure with bolt-sphere joints 14 1 in advance, lay roof panel 2 then above the upper chord in grid structure with bolt-sphere joints 14 1, adopt rivet 8 with roof panel 2 be welded on grid structure with bolt-sphere joints 14 in advance in upper chord 1 on angle steel 9 be connected, and then forming a kind of no purlin grid structure with bolt-sphere joints structure (as shown in Figure 7), angle steel 9 forms on rivet holes 10 and the roof panel 2 and becomes rivet hole 7 (as shown in Figure 8) in this process; The position of upper chord in the grid structure with bolt-sphere joints structure is avoided in junction between the roof panel, and adopts ointment 13 filletings; It is base-material with petroleum bitumen that ointment adopts a kind of, adds material modified, thinner, the formulated black paste caulking material of filler.
During making, upper chord 1, web member 11, lower chord 12 and bolted spherical node 3 are prefabricated in the factory according to design drawing, wherein, upper chord 1, web member 11, lower chord 12 ends have conehead 4 and shrouding 5, be transported to the scene then, during on-the-spot the installation, can be according to on-the-spot erection equipment and steric requirements, adopt method in bulk, adopt piecemeal that method or the whole assembling of employing lift-up method are installed, by bolted spherical node 3 upper chord 1, web member 11, lower chord 12 are connected (as shown in Figure 2), form grid structure with bolt-sphere joints 14, as shown in Figure 3.Roof panel 2 is also in prefabrication.Size according to size of mesh opening in the design, adjust the layout of roof panel 2, make the junction between the roof panel 2 avoid the position (as shown in Figure 9) of the upper chord 1 in the grid structure with bolt-sphere joints 14, and adopt ointment filleting (as shown in figure 10), form a kind of no purlin grid structure with bolt-sphere joints structure.