FR2548235A2 - Bridges with cross-linked (reticulate, lozenged) bearing structure made of steel profiled sections assembled using junction faces - Google Patents

Abstract

The invention relates to the various embodiments of bridges with cross-linked bearing structure made of steel profiled sections assembled using planar or cylindrical junction faces. The latter, which allow assembly to be carried out by welding, bolting or riveting, are either the natural faces of frames 1, or attached faces 2 connected by welding - directly or by the intermediary of attachment pieces 3 - to the frames 4. They may be fitted with centring plates 5. This invention has very widespread applications in the construction of bridges with cross-linked structure and can be used in all countries.

Description

 The present application relates to a second addition to the main patent application No. 83.10532 filed on June 24, 1983 and to its first addition, having as its object the manufacturing, construction and launching processes and the specific components which should contribute to the production of bridges with cross-linked supporting structure made of steel profiles.

 The object of the present application relates to works of the type defined above having deEtinéep junction faces for the production of assemblies by welding, bolting or riveting.

 The advantage of these junction faces is to make it possible to dispense with any shape that may be in the section of the profiles and to facilitate assemblies, these being operated between plane or cylindrical faces. The junction faces also allow assembling by welding, which is the case described in the main patent, by bolting by riveting or by a combination of these modes, which can prove to be particularly advantageous for structures. built in distant countries, the welds being executed in the factory and the bolting or riveting on the site, which eliminates the cost and constraints inherent in welding operations in situ.

 The junction faces are either natural faces of members, or added faces connected by welding directly or by means of parts for joining to the members.

 According to a first variant1 the junction faces are natural faces of the members.

 According to a second variant, the junction faces are docking plates welded to the members and possibly provided with fixing gussets.

 According to a third variant, added junction faces are connected to the members or to the ferrules with joint covers by means of plates or of joining parts obtained by folding.

 According to a fourth variant, the junction faces are natural faces of joint covers, optionally provided with fixing gussets.

 According to a fifth variant, the junction faces are natural faces of plates or sections welded to the members.

 According to a sixth variant, the junction faces are natural faces of prefabricated fastening devices connected by welding to the members.

 In all cases, the junction faces can receive one or more centering plates intended to facilitate the positioning and positioning of the members that they are intended to receive.

 The machining or assembly parts and operations shown in the figures are identified by reference to the general nomenclature detailed below.

1 Membrane
1A Stiffening plate
1B Ferrule
lBa Active half-shell
lBb Passive half-shell
1C Welding ring
1D Joint cover
l Active half-shell
1Db Passive half-shell
1E Reinforcement
1F Securing plate
1G Stiffening plate
1H Bridle
1I Tenon
2 Diagonal, upright, cross, bracing
2A Diagonal
2B Amount
2C Traverse
2D Bracing
2E Flange
3 Apron
3A Decking
3B Auget
3C Spacer
3This Half-spacer
3Cb Profile for half spacer
3Cc Lid
3Cd Bride
3D Flat or folded sheet for slab underside
3E Stiffener for slab underside
3F Connector
3G Concrete slab
3Ga Edge profile for concrete slab
3H Floor waterproofing 4 Fastening device
4A Junction face
4Aa Direct junction face
4Ab Reported junction face
4B Centering plate
4Ba Notch
4C Joining piece
4Ca Obtained by folding
4Cb Flat
4Cc Gusset
4Cd Diaphragm
4D Docking plate
4E Half-shell 5 Assembly node
5A Foundry piece
5B Active part
5C Passive part
5D Sleeve
5E Mounting bracket 6 Sidewalk
6A Edge profile
6Aa Mounting bracket
6B Edge profile
6Ba Mounting bracket
6C Dallette 7 Railing
7A Fixing plate 8 Welding 9 Bolting or riveting
9A Holes for bolts or rivets
9B Bolt or rivet
10 Screwing
10A Screw threads
11 Whole book
IlA Beam
llAa Upper structure
llAb Lower structure
llAc Support piece
llB End spacer
11Ba End rail
11Bb End diagonal
Figures 1 to 5 show junction faces reported in the case of circular members, with or without interposition of ferrules or joint covers.

 Figure 6 shows a docking plate in the case of rectangular members.

 Figures 7 to 10 show junction faces supported by ferrules or joint covers.

 FIG. 11 shows a docking plate provided with fixing gussets.

 FIG. 12 represents junction faces provided with joining parts obtained by folding.

 Figures 13 and 14 show junction faces supported by joint covers and provided with fixing gussets.

 Figures 15 and 16 show junction faces supported by prefabricated fastening devices.

 Figures 17 and 18 show junction faces reported in the case of circular membrure4.

 FIG. 19 represents a junction face provided with fastening parts obtained by folding.

 FIG. 20 represents a junction face obtained by folding a joint cover.

 Figures 21 and 22 show direct junction faces of the frame - spacer.

 FIG. 23 shows the junction faces between the spacers and the joint cover.

 Figures 24 and 25 show junction faces supported by profiles welded to the frames.

 Figures 26 and 27 show junction faces supported by plates welded to the members.

 Figures 28 to 32 show junction faces supported by prefabricated connecting devices.

 Figures 33 and 34 show the direct connection between decking and frame.

 Figures 35 to 40 show reported junction faces decking-frame.

 FIG. 41 represents a junction between upper frame and upper member by welding.

 The, FIGS. 42 to 47 represent a junction of a lower chord - lower chord by welding joint covers.

 Figures 48 and 49 show a junction of the lower chord - lower chord by bolting.

 Figures 50 to 52 show an upper chord - upper chord junction by welding.

 Figures 53 to 55 show a junction of upper chord - upper chord by bolting or riveting the ends of the half-spacers when it is not possible to carry out welding, bolting or direct riveting.

 Figures 56 and 57 show a junction upper frame - upper frame by bolting or riveting.

 Figures 58 and 59 show a junction between half-spacers by bolting, riveting or welding.

 Figures 60 to 63 show support devices in the case of circular or rectangular members.

 Figures 64 to 68 show a junction between prefabricated sidewalks and slabs or railings in the case of metal decks or concrete slabs.

 Figures 69 and 70 show the assembly with the frame of a sheet for the underside of a concrete slab.

 Figures 71 to 74 show the junction faces of members - diagonals in the event of bolting or riveting.

 FIGS. 75 to 82 show, by way of example, various forms of structures with a reticulated support structure in steel sections comprising junction faces.

 The operations of making and assembling the junction faces can be perfectly executed in the factory or on the site.

They include all or part of the elementary operations detailed below
- Machining of docking plates, junction faces
reported, half-shells, pieces of soli
darisation and centering plates.

 - Machining of ferrules and joint covers.

 - Drilling holes for bolts or rivets.

 - Fixing the nuts or tapping the screw threads.

- Welding of the attached junction faces or half
shells to the joining pieces.

- Welding of docking plates or parts
secured to members, ferrules or joint covers.

 - Welding of the centering plates on the junction faces.

- Assembly by welding, bolting, riveting or by
a combination of these means organs comprising
a junction face.

 The reticulated works in steel sections object of this certificate of addition can be implemented in any places.

 They are characterized by the easy and precise realization of the assemblies and by a very great freedom in the technical design of the intermediate or final assembly methods.

 They allow, by the combination of welding, bolting and riveting, to minimize welding operations on site, expensive and sensitive to various vagaries of execution.

Claims (10)

 1. Bridges according to claim 1. of the main patent characterized in  what they include assemblies because welding, bolting or ri  vetting on the natural faces of the members.  2. Bridges according to claim 1. of the main patent characterized in  what they include assemblies by welding, bolting or ri  screwing to docking plates welded to the frames.  3. Bridges according to claim 1. of the main patent characterized in  what they include assemblies by welding, bolting or ri  bolting to attached junction faces connected to the frames at  means of fastening parts possibly obtained by fold  age. 4. Bridges according to claim 1. of the main patent characterized in  what they include assemblies by welding, bolting or ri  vetting to natural faces of joint covers.  5. Bridges according to claim 1. of the main patent characterized in  what they include assemblies by welding, bolting or ri  bolting to flat or section welded to the frames.  6. Bridges according to claim 1. of the main patent characterized in  what they include assemblies by welding, bolting or ri  screwing to prefabricated fasteners welded to members  res. 7. Bridges according to claim 1. of the main patent characterized in  what they include assemblies between upper chords or  lower by welding, bolting or riveting.  to the supporting structure by welding, bolting or riveting.  what they eo'.port metal aprons made and reread  8. Bridges according to claim 1. of the main patent characterized in  9. Bridges according to claim 1. of the main patent characterized in  what they horn: wear a participating concrete slab whose under  face is a flat or folded sheet stiffened made and connected to the  load-bearing structure by welding, bolting or riveting. 10. Bridges according to claim 1 of the main patent characterized in  they hawk prefabricated sidewalks formed of a profile  boride and an edge profile capable of receiving a railing and  pre-manufactured slabs, made by folding or jar continuously closing @@ connected to the deck by welding.