CN102003028B - Non-purlin bolt ball node grid structure and manufacturing method thereof - Google Patents

Abstract

The invention relates to a grid structure without purlin bolt ball nodes. The net frame structure with bolted ball joints without purlins includes upper chord, web, lower chord and bolted ball joints. The bolted ball joints are composed of high-strength bolts, sleeves, solid spheres and pins; the axes of the upper chord, web and lower chord pass through the solid sphere The center of the ball; the upper chord adopts square steel pipe or rectangular steel pipe. The upper chord is set with two sides horizontal and two sides vertical. The diameter of the bolt ball joint connecting the upper chord is less than or equal to the vertical side length of the upper chord. All the components of the present invention realize industrialized production, all bolts are used on site to connect, avoid on-site welding, shorten the construction period and construction cost, and do not set purlins at the same time, saving steel materials and reducing engineering cost.

Description

A net frame structure without purlin bolt ball nodes

technical field

The invention relates to a space grid structure, in particular to a grid structure without purlin bolt ball nodes. the

Background technique

The space grid structure has been greatly promoted and applied in industrial buildings and civil buildings due to its light weight and strong ability to span space. At present, the commonly used space grid structure generally adopts bolted ball joints or welded ball joints. The upper and lower chords and webs generally use round steel pipes. Through bolted ball joints, the rods are connected by ball joints to form a space grid structure system. Then The purlins are set up on the grid structure, and finally the roof panels are laid. With the application in engineering, this structural system has exposed some of its own shortcomings, mainly in the following aspects:

1. The nodes and components of this structural system are manufactured separately in the factory, and then assembled on site. Therefore, the workload on site is large, and there are many types of components, including grid structural components, purlins and nodes. The on-site installation and construction period is long and the construction higher cost. the

2. Purlin structure is used to erect roof panels, which increases the types and quantities of components and wastes steel. the

Contents of the invention

In order to overcome the above technical deficiencies of the existing space grid structure, the present invention provides a space grid structure without purlins and bolt ball nodes. the

Technical scheme of the present invention is as follows:

The net frame structure with bolt ball joints without purlins includes upper chord, web, lower chord and bolt ball joints. The bolt ball joints are composed of high-strength bolts, sleeves, solid spheres and pins; The center of the sphere; the upper chord, the web and the lower chord all have a cone head and a sealing plate structure at the end. The sealing plate is reserved with high-strength bolt holes, and the high-strength bolt screw passes through the reserved hole of the sealing plate. Screw the high-strength bolts into the solid sphere with the reserved threaded holes, and the nut part is blocked inside the rod by the sealing plate; the upper chord is made of square steel pipe or rectangular steel pipe, and the upper chord is set with two sides horizontal and two vertical sides, and the connection The bolt ball node diameter of the top chord is less than or equal to the vertical side length of the top chord;

Preferably, the web bar is a square steel pipe, a rectangular steel pipe or a round steel pipe;

Preferably, the lower chord member is a square steel pipe, a rectangular steel pipe or a round steel pipe;

Preferably, the grid structure is provided with a roof panel, and the roof panel and the upper chord are connected and fixed by rivets;

Preferably, the upper part of the roof panel is driven into rivets and the upper chord is riveted together or the angle steel is pre-welded on one side of the upper chord, and the roof panel is riveted together with the angle steel on the side of the upper chord;

Preferably, the connection between the roof panels avoids the position of the upper chord in the bolted ball node grid structure, and uses ointment caulking;

Preferably, the ointment adopts a black paste-like caulking material prepared with petroleum asphalt as the base material, adding modified materials, diluents, and fillers;

The manufacturing method of the net frame structure with bolted ball joints without purlins adopts the bulk method, block installation method or overall assembly jacking method, and connects the upper chord, web and lower chords through bolt balls to form a bolted ball joint grid structure, and then lays Roof panels, and then connect the roof panels and the bolted ball joint network frame structure into one body through rivets. A grid structure without purlin bolt ball nodes. the

The beneficial effect of the present invention is that by directly laying the roof panel on the upper surface of the upper chord in the bolted ball node network frame, the purlin construction measures are omitted, steel materials are saved, and at the same time, the on-site construction procedure is reduced, the construction period is reduced, and the construction cost is saved. construction cost. Especially suitable for application in spatial grid structures. the

Description of drawings

Fig. 1 is the structural representation of the purlin-bolt ball-node grid structure without purlins with roof panels of the present invention;

Fig. 2 is the local schematic diagram of the purlin-free bolt ball node grid structure of the present invention;

Fig. 3 is the structure schematic diagram of purlin-free bolt ball node grid structure of the present invention;

Fig. 4 is the schematic diagram that the purlin-bolt ball-node grid structure roof panel and the upper chord are directly riveted into one body with the roof panel;

Fig. 5 is the schematic diagram of the rivet hole formed by the direct rivet connection between the purlin-bolt ball-node grid structure roof panel and the upper chord rod of the present invention;

Fig. 6 is the schematic diagram of the pre-welded angle steel on the upper chord of the purlin-bolt ball node grid structure with roof panels of the present invention;

Fig. 7 is the schematic diagram that the purlin-bolt ball-node grid structure roof panel and the upper chord rod are pre-welded with angle steel rivets to be integrated into one body with the roof panel;

Fig. 8 is the schematic diagram of the roof panel and the upper chord pre-welded angle steel rivets connected to form the rivet hole of the purlin-bolt ball-node network frame structure with the roof panel of the present invention;

Fig. 9 is the local effect diagram after the roof panel and the upper chord of the purlin-bolt ball-node grid structure without purlin bolts of the present invention are connected;

Fig. 10 is the detailed processing schematic diagram between the roof panel connection of the purlin-bolt spherical node grid structure with roof panels of the present invention;

Fig. 11 is a schematic diagram of the detailed structure of the bolted ball joints and the ends of the rods of the purlinless bolted ball joint grid structure with roof panels of the present invention. the

In the figure, 1. Upper chord; 2. Roof panel; 3. Bolt ball joint; 4. Cone head; 5. Sealing plate; 6. Rivet hole; 7. Rivet hole; 8. Rivet; 9. Angle steel; 10. Rivet Hole; 11, web bar; 12, lower chord; 13, ointment; 14, bolt ball node grid; 15, sleeve; 16, solid sphere; 17, high-strength bolt; 18, pin. the

Detailed ways

As shown in Figure 1-11, the bolted ball joint network frame 14 is formed by connecting the upper chord 1, the web 11 and the lower chord 12 through the bolted ball joint 3, and the bolted ball joint 3 is composed of a sleeve 15, a solid sphere 16, high-strength bolts 17 and pin 18; the axes of the upper chord, the web and the lower chord pass through the center of the solid sphere; the upper chord, the web and the lower chord all have cone heads 4 and sealing plates 5 at the ends, and high-strength bolt holes are reserved for the sealing plates. The high-strength bolt screw passes through the reserved hole of the sealing plate, and the high-strength bolt is screwed into the solid sphere of the reserved threaded hole by screwing the sleeve, and the nut part is blocked by the sealing plate inside the rod; the upper chord adopts square steel pipe or rectangular Steel pipe, the upper chord is set with two sides horizontal and two sides vertical, the diameter of the bolt ball joint connecting the upper chord is less than or equal to the vertical side length of the upper chord; the web is square steel pipe, rectangular steel pipe or round steel pipe; the lower chord It is a square steel pipe, a rectangular steel pipe or a round steel pipe; the grid structure is provided with a roof panel 2, and the roof panel 2 is connected to the bolt ball node grid frame 14. There are two implementations: (1), in the bolt ball node grid frame 14 The roof panel 2 is directly laid on the upper chord 1, and then the roof panel 2 and the upper chord 1 are directly connected by rivets 8, thereby forming a net frame structure with ball joints without purlin bolts (as shown in Figure 4). During this process, the bolts The upper chord 1 in the ball joint grid 14 forms rivet holes 6 and rivet holes 7 on the roof panel 2 (as shown in Figure 5); (2), pre-welded on the upper chord 1 in the bolted ball joint grid 14 Angle steel 9 (as shown in Figure 6), then lay the roof panel 2 on the upper chord 1 in the bolted ball joint network frame 14, and adopt the rivets 8 to connect the roof panel 2 and the upper chord bar welded in advance in the bolted ball joint network frame 14 The angle steel 9 on 1 is connected to form a grid structure without purlin bolt ball joints (as shown in Figure 7). shown); the connection between the roof panels avoids the position of the upper chord in the bolted ball node grid structure, and uses ointment 13 caulking; the ointment uses petroleum asphalt as the base material, adding modified materials, Black paste caulking material prepared with thinner and filler. the

During production, the upper chord 1, the web 11, the lower chord 12 and the bolt ball joint 3 are prefabricated in the factory according to the design drawings, wherein the ends of the upper chord 1, the web 11, and the lower chord 12 are equipped with a cone head 4 and a sealing plate 5 , and then transported to the site. During on-site installation, according to the site installation equipment and space conditions, the bulk method, the block installation method, or the overall assembly jacking method can be used to connect the upper chord 1 and the web 11 through the bolt ball joint 3 , Bottom chord 12 connections (as shown in Figure 2), form the bolt ball node network frame 14, as shown in Figure 3. The roof panel 2 is also prefabricated in the factory. According to the size of the grid size in the design, the arrangement of the roof panels 2 is adjusted so that the connection between the roof panels 2 avoids the position of the upper chord 1 in the bolted ball node grid 14 (as shown in Figure 9), and adopts Ointment caulking (as shown in Figure 10) forms a grid structure without purlin-bolt ball nodes. the

Claims (6)

1. A purlin-free bolted ball joint grid structure, including upper chords, webs, lower chords and bolted ball joints, the bolted ball joints are composed of high-strength bolts, sleeves, solid spheres and pins; upper chords, webs and lower chords The axis of the rod passes through the center of the solid sphere; the upper chord, the web and the lower chord all have conical head and sealing plate structure at the end, the sealing plate is reserved for high-strength bolt holes, and the high-strength bolt screw passes through the reserved hole of the sealing plate, through the screwing The method of the sleeve is to screw the high-strength bolt into the solid sphere with the reserved threaded hole, and the nut part is blocked inside the rod by the sealing plate; the characteristic is that the upper chord is made of square steel pipe or rectangular steel pipe, and the upper chord is two sides horizontal, The two sides are arranged vertically, and the diameter of the bolt ball node connecting the upper chord is less than or equal to the length of the vertical side of the upper chord. 2. The net frame structure without purlin bolt ball joints according to claim 1, characterized in that: the web members are square steel pipes, rectangular steel pipes or round steel pipes. 3. The purlin-free bolt ball-node grid structure according to claim 1, characterized in that: the lower chord members are square steel pipes, rectangular steel pipes or round steel pipes. 4. The net frame structure without purlin bolt ball joints according to claim 1, characterized in that: the net frame structure is provided with a roof panel, and the roof panel and the upper chord are connected and fixed by rivets. 5. The purlin-free bolt ball-node grid structure according to claim 4, characterized in that: rivets are driven into the upper part of the roof panel and the upper chord is riveted together or angle steel is pre-welded on the side of the upper chord, and the roof panel and the upper chord side The upper angle steel is riveted together. 6. The purlin-free bolted ball-node grid structure according to claim 5, characterized in that: the connection between the roof panels avoids the position of the upper chord in the bolted ball-node grid structure, and uses ointment caulking. the

Images