KR20100085716A - Tubular construction with polygonal section passage - Google Patents

Abstract

PURPOSE: A tubular structure having a polygonal section passage is provided to optimize a passage section as a loading gauge of vehicles for passing through a conduit. CONSTITUTION: A tubular structure having a polygonal section passage comprises one or more conduits having a polygonal section passage and is made of sections, mounted on a laying surface which is horizontal and compact. Each section comprises a lower support structure(1) and a reverse U-shaped cover member(2). The lower support structure is partially manufactured in advance and is arranged on the laying surface. The reverse U-shaped cover member is placed on the support structure.

Description

TUBULAR CONSTRUCTION WITH POLYGONAL SECTION PASSAGE}

The present invention relates to the technical field of tubular structures having a flat bottom which rests on a horizontal, compacted laying surface.

Typically such structures consist of sections that are arranged end-to-end and each formed of juxtaposed wall members.

Thus, for the construction of liquid circulation conduits, for example drainage networks, sections each formed of prefabricated concrete tubular members that bear against each other at their longitudinal ends are arranged in terminations. Such devices are generally designed in cross sections that do not exceed 1 to 2 m 2.

Such systems, however, may not be adapted to the construction of conduits that may be used for the construction of underground passageways for the circulation of vehicles, having a cross section too large and may even exceed 100 m 2, thus diverting the river below the dam or the like. Do not.

Thus, the need for construction systems to enable the creation of large section conduits has become apparent.

To this end, the present invention relates to a tubular structure comprising sections arranged in longitudinal connection that comprise at least one conduit having a substantially polygonal passage section and which rest on a horizontal, compacted laying surface, wherein each section Is a ceiling which is flanked by at least partly prefabricated and disposed on the laying surface and supported by the two vertical legs disposed on the support structure and each supported at the joint by the support structure. It characterized in that it comprises a reverse U-shaped cover member to form a.

Using this kind of prefabricated system allows for rapid erection of the conduit in situ. In addition, the polygonal shape of the passage section optimizes the passage section as a function of the loading gauge of the vehicles for passing the conduit.

In one variation of the invention, each conduit has a passage section that is substantially rectangular.

According to the invention, the support structure can be produced in any suitable way. Thus, in the first embodiment, the support structure forms a concrete slab which is laterally supported by two vertical uprights each supporting a corresponding leg of the cover member, having a flat bearing bottom plate. And a U-shaped member.

In a second embodiment, the support structure comprises two side members, each side member comprising a base comprising a flat bearing bottom plate and a vertical upright upstanding from the base at right angles to the bottom plate, On the contrary, a vertical upright supporting the corresponding leg of the cover member. Creating the support structure with two members facilitates its handling and transport.

According to the invention, each side member can take several forms. In one variant of the invention, each side member is in an L-shape, the base of which includes an interior flange perpendicular to the vertical upright.

In another variant of the invention, each side member is in the form of a T-shape, the base of which comprises an outer flange and an inner flange perpendicular to both sides of the vertical upright in the manner of a bracket, wherein the outer flange of each side member is It extends beyond the width sufficient to ensure the stability of the member against the lateral thrust applied by the vault member under the assumption of forces applied to the bottom plate. Thus, the structure of the present invention can be produced without installing the scaffold, which reduces its cost. In addition, the stability imparted to the side members by their expanded bottom plate makes their use more secure and reduces the risk of accidents during storage at or at the place of manufacture.

In a preferred but not strictly essential variant, the outer flange has a width greater than the width of the inner flange.

In another variant of the second embodiment, each section is closed at the bottom by a concrete slab member extending between the bottoms of the two side members.

In another variant of the invention applicable to all of the above embodiments, the joint between each leg of the cover member and the support structure is articulated, to define a longitudinal node articulation axis. And a projecting rounded portion supported by a recessed rounded portion.

In a variant of the invention aimed at the use of the structure of the invention in seismic areas, the structure comprises means for paraseismic locking of the movement of the jointed joint in each jointed joint. do.

According to the invention these seismic protection locking means can be produced in any suitable way. Thus, in one variant of the invention, the seismic protection locking means comprises two outer beads each attached to the side member and the round ceiling member, one of the beads being connected to the other bead. A longitudinal groove formed by defines a longitudinal groove.

In another variant of the invention, said earthquake protection locking means comprises at least one tie-rod connecting said round ceiling member and opposite portions of said side member, said tie rod being said round ceiling. It is located in the two opposing channels in the member and the side member. This is not strictly necessary, but the tie rods and the channels are preferably curved such that the tie rods pass through the longitudinal axis of the joint of the joint.

In another embodiment of the invention, the cover member comprises at least one transverse stiffener rib formed on the inner surface of the round ceiling member. Using this kind of transverse ribs allows the creation of covered roads or paths with very large passage sections, for example passage sections of 145 m 2 or more.

In a preferred embodiment, each transverse rib forms with the cover member a non-deformable monoblock assembly molded into one piece of compressive or reinforced concrete.

In one variant of the invention, each section of the tubular structure comprises a concrete slab member extending between the bottoms of the two side members of the support structure.

In one variant of the invention, each section of the tubular structure comprises at least one intermediate partition member supporting the ceiling and separating the conduit. This type of partition member is particularly suitable when the ceiling has to support a circulation path for high loads.

In another variant of the invention, the cover member comprises at least one outer support corbel for the supporting slab.

Of course, the various features, embodiments, and variations of the invention may be related to one another in various combinations, provided they are not mutually exclusive or incompatible.

Moreover, various other features of the invention emerge from the description given hereinafter with reference to the accompanying drawings, which show non-limiting embodiments of the tubular structures of the invention.

In the drawings, various members common to various embodiments or variations involve the same reference.

1 shows, in cross section, a tubular structure, which can be, for example, an underground passage or a liquid circulation conduit for the circulation of vehicles. The structure is arranged end-to-end, with two prefabricated members each in cross section, a cover member 2 seating on the lower support structure 1 and the support structure 1, respectively. It is formed by joining tubular sections consisting of.

Each section of the support structure 1 is here formed by a U-shaped monoblock member which defines a concrete slab 3 which is laterally supported by two vertical uprights 4. The support structure 1 has a flat bottom which defines an extended bottom plate carried by a horizontal, compacted laying surface S.

The cover member 2 also has a ceiling 5 which is laterally supported by two vertical legs 6 each of which is supported at its lower end by the upper end of the upright 4 of the support structure 1. It consists of an inverted U-shaped monoblock prefabricated member that defines.

The interface between each upright 4 and the corresponding leg 6 is formed by a jointed joint (see below).

Assuming the U-shaped shapes of the support structure 1 and the cover member 2, it should be noted that the conduits defined by assembling them have a passage section P of polygonal and in particular substantially rectangular shape.

According to the invention, each section of the support structure 1 is not necessarily formed of a single prefabricated member. FIG. 2 thus shows another embodiment of the tubular structure of the invention in which the supporting structure 1 comprises two L-shaped side members 7. Each side member 7 comprises a base 8 comprising a flat bottom plate 9 carried by a laying surface S. Each side member also includes a vertical upright 10 upstanding from the base 8 at right angles to the bottom plate 9. The base 8 also includes an inner flange 11 perpendicular to the vertical upright 10 and imparting its L-shape to the side member 7. It should be noted that each inner flange 11 preferably extends beyond the width sufficient to ensure the stability of the side member 7 when at least the side member is disposed on the surface S without any external load. . In order to enhance the stability of the support structure 1 and the conduit, the inner flanges 11 of each side member 7 are prefabricated or connected by in-situ poured concrete slab members 15. Can be imagined.

Thus, the two side members 7 can withstand the load applied by the cover member 2 by themselves and possibly backfill on top of it without risk of tilting outward. As a result, there is no need to wait for the creation and installation of the keyed joint to install the round ceiling member 3, if applicable.

However, the use of extended bottom plates has other advantages. In particular, the bearing area of each side member can be determined such that the bottom plates of the side members 7 are sufficient to transfer the weight of the applied load to the ground without fear of settlement. This makes the concrete slab installation unnecessary.

In addition, during the creation of the structure, after placement of the side members 7, backfilling can be started such that the outer flanges 17 are quickly covered by a backfill, thereby placing the cover member 2. The holding in place of the member can be achieved.

In addition, when the structure is designed such that forces applied to the side members 2, 2 ′ by the cover member 2 are applied at right angles to the joint planes P and P min, ie along the walls, For example, after differential ground subsidence, fluctuations in the direction of application of these forces may occur, and the use of extended bottom plates extending inwardly and outwardly may be responsible for the stability of the conduit and its misalignment effects. Increase resistance.

This effect is further enhanced after backfilling by the fact that the outer flanges 17 having a significant depth of ground at the top replace the tipping of the side member 2 with respect to one or the other by the spade effect.

When a concrete slab is injected in situ, it is possible to give it a monolithic structure by providing armatures that overlap between successively injected parts. This creates continuous support in the ground that allows the arrangement of the various sections of the top to be maintained and to resist changes in applied forces or differential compaction.

If the concrete slab members 1 are prefabricated panels lying flat on the ground, the side members are placed such that the joint plane of each transverse between the tops of the two successive sections substantially passes through the center of the concrete slab member. It is possible to offset in the axial direction. As a result, the continuous side members bear against the ground through the same concrete slab member, which thus prevents any mismatching effects.

Of course, using this kind of concrete slab member is not strictly necessary for the production of the tubular structure of the present invention.

FIG. 3 thus shows another embodiment in which the bearing structure 1 comprises two generally P-shaped side members 7 which are not connected by concrete slabs. The base 8 of each side member 7 comprises an inner flange 11 and an outer flange 17, both of which are perpendicular to the corresponding upright 10. The inner flange 11 and the outer flange 17 then extend beyond the width sufficient to ensure the stability of the corresponding side members 7 when at least no external load is applied to it.

In a preferred embodiment, the inner and outer flanges of each side member, preferably the outer flange, extend beyond the width sufficient to ensure the stability of the joint formed by the side members and the cover member supported thereon.

As mentioned above, the interface between each leg 6 of the cover member and the corresponding uprights 4, 10 of the support structure 1 is formed by a jointed joint 20.

Each joint 20 defines a node connection about the longitudinal axis. Thus, as shown in FIG. 4, each joint 20 is preferably formed at the lower ends of the legs 6 of the cover member 2 and the upright 10 of the support structure 1. Rounded protrusions 22 supported by concave portions 23 provided at the tops of the. The knuckled joints 20 extend at least a part of the length of the legs 6 and the uprights 4, 10.

In the example shown, in order to avoid structural obstacles as a result of earth's tremors, the tubular structural member of the present invention also utilizes paraseismic locking means 24 at the joints 20. In the example shown, the earthquake protection locking means 24 comprises at least one tie-rod 25 (preferably a plurality of tie-rods), in each of the joints 20 in FIGS. 3 and 4. Only one of them is shown. Each tie-rod 25 then connects the cover member 2 and the facing portions of the support structure 1. The tie-rod 25 is then located in two channels 26, 27 created at the corresponding edges of the leg 6 and the upright 10, respectively. The channels 26, 27 are then open towards each other at the joint 20. The channels 26, 27 also joint to the chamber 28, each of which can provide access to the corresponding head 29 of the tie-rod to tighten it and cause the knuckled joint to be compressed. It opens on the side facing (8).

In the example shown, the tie-rod 25 and the channels 26, 27 are curved such that the tie-rod 25 passes through the joint connection axis of the joint. Of course, according to the invention, the channels can be equally straight. Passing through the axis DELTA produces a better distribution of compressive forces in the opposing parts of the knuckle joint 20.

In addition, according to the example of FIG. 3, the cover member 2 comprises at least one, preferably a plurality of transverse ribs 40 on the inner surface of the cover member 2 to increase its stiffness. Let's do it.

Preferably, the transverse ribs 40 are shaped during the manufacturing process of the round ceiling member such that they together form a monoblock assembly that is not deformable.

According to the invention, the earthquake protection locking means 9 need not necessarily be a tie-rod.

Thus, FIG. 5 shows seismic protection means 24 comprising two outer beads 41, 42 attached to the upright 10 and the corresponding leg 6, respectively, at each knotted joint 20. Another embodiment of the is shown. The beads 41, 42 extend at least a part of the length of the corresponding member, preferably beyond its entire length. One of the beads, in the illustrated example, a bead 41 attached to the side member 2 is a longitudinal tongue that engages with a corresponding groove 44 formed in the bead 42 attached to the cover member 2. tongue: 43). Of course, the opposite arrangement can also be imagined.

FIG. 6 is very similar to that described with reference to FIG. 3, but at least one, exactly one intermediate partition in the illustrated example that supports the ceiling 5 and separates the conduit into two conduits P ₁ , P ₂ . The latter and other tubular structures are shown in that they include the member 30. In the example shown, the intermediate bulkhead member 30 is laterally supported by two side flanges 32 which impart some stability to the intermediate member 30 and define a planarly extended support bottom plate 33. It has the general shape of an inverted T with a base 31. The intermediate member 30 further comprises an upright 34 perpendicular to the flanges 32, 33, the end of which faces the base 31, the ceiling 5 of the cover member 2. I support it.

It should be noted that in this example each of the inner flanges 11 of the side members 7 is connected to the flange 32 of the intermediate member by a concrete slab 35.

The cover member 2 in this example further has support belts 38 for the support slabs 39 on the outer surfaces of its legs 6.

The invention provides a number of variations and thus is not limited to the embodiments described herein by way of example, other variations and other improvements can be envisioned without departing from the scope of the claims defined in the claims.

1 is a cross-sectional view of a section of a tubular structure of the invention comprising an inverted U-shaped cover member seated in a U-shaped support structure;

2 is a cross-sectional view showing another embodiment of a section of the tubular structure of the present invention;

3 shows in cross section a section of a tubular structure of the invention without a concrete slab, comprising two side members supporting an inverted U-shaped cover member and employing seismic protection locking means;

FIG. 4 is a detailed view of IV of FIG. 3, showing a knotted joint between the side member and the cover member in relation to the seismic protection locking means; FIG.

FIG. 5 is a view similar to that of FIG. 4 showing a seismic protection locking means different from that shown in FIGS. 3 and 4; and

6 is a cross-sectional view of another embodiment of a section of the tubular structure of the present invention comprising two side members and an intermediate partition member supporting an inverted U-shaped cover member.

Claims (17)

Comprising at least one conduit (P ₁ , P ₂ , P ₃ ) having a substantially polygonal passage section, consisting of sections arranged in longitudinal connection seated on the horizontal and compacted laying surface (61) As a tubular structure, Each section is at least partly prefabricated and disposed on the laying surface and on the supporting structure 1, each of which is supported by the supporting structure 1 at the joint 20. Tubular structure, characterized in that it comprises an inverted U-shaped cover member (2) forming a ceiling (5) which is supported on the side by two vertical legs (6). The method of claim 1, Each conduit has a substantially rectangular passage section (P ₁ , P ₂ , P ₃ ). The method according to claim 1 or 2, The support structure 1 forms a concrete slab 3 which is laterally supported by two vertical uprights 4 each supporting a corresponding leg 6 of the cover member 2, and is supported flat. A tubular structure, characterized in that it comprises a U-shaped member having a bottom plate. The method according to claim 1 or 2, The support structure (1) comprises two side members (7), each side member comprising a base (8) comprising a flat bearing bottom plate (9), and the base perpendicular to the bottom plate (9). And a vertical upright (10) upstanding from (8) and supporting a corresponding leg (6) of the cover member (2) as opposed to the base (8). The method of claim 4, wherein Each side member (7) is L-shaped, tubular structure, characterized in that its base includes an inner flange (11) perpendicular to the vertical upright (10). The method of claim 4, wherein Each side member 7 has a T-shape, and includes an outer flange 17 and an inner flange 11 whose base is perpendicular to both sides of the vertical upright 10 in the manner of a bracket, each side member The outer flange 17 of (7) is at least wide enough to ensure the stability of the member (7) against the lateral thrust applied by the cover member (20) assuming the forces applied to the bottom plate (9). Tubular structure, characterized in that extending to. The method of claim 6, The outer flange (17) is a tubular structure, characterized in that having a width larger than the width of the inner flange (11). The method according to any one of claims 4 to 7, Each section is characterized in that it comprises a concrete slab member (15, 35) extending between the lower portions of the two side members (7). 9. The method according to any one of claims 1 to 8, A joint (20) between each leg of the cover member and the support structure is node connected and includes a protruding round portion supported by a concave round portion to define a longitudinal node connection axis. The method of claim 9, Tubular structure, characterized in that at each jointed joint (20), means (24) for seismic protection locking of the movement of the jointed joint (20). The method of claim 10, The earthquake protection locking means includes two outer beads 41, 42 attached to the support structure 1 and the cover member 2, one of the beads being longitudinally formed by another bead. A tubular structure characterized in that it defines a longitudinal groove 44 to which the tongue 43 engages. The method of claim 10, The earthquake protection locking means 24 includes at least one tie-rod 25 connecting the cover member 2 and the facing portions of the support structure 1, the tie rod being the cover member ( 2) and a tubular structure, characterized in that it is located in the channels (26, 27) facing each other in the corresponding part of the side support structure (1). 13. The method of claim 12, The tie rod 25 and the channels 26, 27 are curved such that the tie rod 25 passes through the longitudinal axis Δ of the joint of the joint 20. . The method according to any one of claims 1 to 13, The cover member (2) is a tubular structure, characterized in that it comprises at least one cross stiffener rib (40) formed on the inner surface of the cover member. The method of claim 14, The ribs 40 in each traverse form together with the cover member 2 a non-deformable monoblock assembly molded into one piece of compressive stress or reinforced concrete. The method according to any one of claims 1 to 15, The cover member (2) is a tubular structure, characterized in that it comprises at least one external support for the support slab. The method according to any one of claims 1 to 16, Tubular structure, characterized in that it comprises at least one intermediate partition member (30) for supporting the ceiling (5) and separating the conduit.

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