EP0875662B1 - Prefabricated article of manufacture made of reinforced concrete for tunnel - Google Patents
Prefabricated article of manufacture made of reinforced concrete for tunnel Download PDFInfo
- Publication number
- EP0875662B1 EP0875662B1 EP97830207A EP97830207A EP0875662B1 EP 0875662 B1 EP0875662 B1 EP 0875662B1 EP 97830207 A EP97830207 A EP 97830207A EP 97830207 A EP97830207 A EP 97830207A EP 0875662 B1 EP0875662 B1 EP 0875662B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- manufacture
- article
- panels
- elements
- operating position
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
- E02D29/05—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them at least part of the cross-section being constructed in an open excavation or from the ground surface, e.g. assembled in a trench
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/02—Structures consisting primarily of load-supporting, block-shaped, or slab-shaped elements
- E04B1/04—Structures consisting primarily of load-supporting, block-shaped, or slab-shaped elements the elements consisting of concrete, e.g. reinforced concrete, or other stone-like material
- E04B1/043—Connections specially adapted therefor
Definitions
- the present invention relates to a prefabricated article of manufacture made of reinforced concrete for tunnel construction, in particular for underground ducts and cables
- tunnel and underground passage constructions made of reinforced concrete intended to house cables and ducts for facilities of different types generally also requiring to be inspected, involves heavy expenses and execution times that are sometimes very long above all in an urban environment.
- the article also presents hinging means defined by the reinforcing elements themselves adapted to enable panel rotation between an aligned position and an operating position arranged at an angle.
- the contiguous panels rotate progressively until their facing longitudinal edges come into contact with each other and consequently the connecting elements are stressed and their external portions bend.
- the technical task underlying the present invention is to devise a prefabricated article of manufacture made of reinforced concrete not only enabling the construction costs for these tunnels to be reduced, but above all appearing particularly useful in restraining time required for carrying out said tunnels to the greatest extent, taking into account the fact that during this time an excavation is to be maintained opened.
- a prefabricated article of manufacture made of reinforced concrete for making tunnels, in particular for underground ducts and cables, comprising at least two adjacent panels, each consisting of a concrete body and iron reinforcing elements, said reinforcing elements comprising connecting elements between said panels, each of said connecting elements having at least two opposite anchoring portions respectively fitted into two adjacent panels and at least one outer partly bendable connecting portion, and hinging means interposed between said panels and adapted to enable the panel rotation about a hinge axis defined by a pivot pin between a substantially aligned position and an operating position arranged at an angle, said connecting portion being partly bent during said rotation, said outer portion of said connecting element comprising a curved arc-shaped centre portion having a centre disposed on the side involving said hinge axis and two substantially curved side portions in said aligned position presenting the respective centres on the opposite side relative to said hinge axis.
- It preferably comprises three prefabricated flat panels 2, each consisting of a concrete body 3 and iron reinforcement elements suitably shaped and disposed within said body.
- Panels 2 in turn, comprise two side panels 4 and a centre panel 5 adapted to define, in an operating position, two uprights and a crosspiece element.
- Each upright has two eyebolts or lifting rings on its extrados, to be used in handling and mounting operations, whereas the crosspiece element has four eyebolts.
- hinging means 6 Interposed between uprights 4 and the crosspiece element 5 is hinging means 6 adapted to enable rotation of the former about a hinge axis 7 (see Fig. 7) between a substantially aligned position, shown in Figs. 4 and 9, corresponding to the manufacture and transportation condition of the article of manufacture, and an operating position bent at a right angle (see Fig. 1).
- the reinforcement elements of panels 2 comprise connecting elements 8 between the panels themselves, each of which has anchoring portions 8a fitted into bodies 3 and an outer connecting portion 8b between each upright 4 and the crosspiece element 5 partly bendable during rotation of said upright 4.
- the outer connecting portion 8b comprises a curved centre portion 8c substantially in the form of an arc of a circle of a value in compliance with law requirements and having its centre on the side involving the hinge axis 7 and two substantially curved side portions 8d in said aligned position (see Fig. 4) having the respective centres on the side facing away from the hinge axis 7.
- stiffening means 9 adapted to keep the shape of the centre portion 8c substantially unchanged during said rotation and means 10 for controlling deformation of the side portions 8d, and adapted to determine a rectilinear conformation of said side portions in the operating position of the article of manufacture.
- the stiffening means 9 is defined by a tie-rod element fastened to the ends of the centre portion 8c and the extension of which follows the chord of the arc of a circle formed by said centre portion.
- the deformation control means 10 is defined by flat locating areas against which abutment of the side portions 8d occurs, which portions are in the form of recesses disposed on first end portions 4a of uprights 4 and on end portions 5a of the crosspiece element 5.
- the first end portions 4a of uprights 4 further have each an abutment area 4b transverse to the vertical extension direction of uprights 4, that is oriented horizontally in said operating position, adapted to define a support surface for end rest areas 5b of the crosspiece element 5.
- the abutment areas 4b are brought to abut against the rest areas 5b thereby causing, in said operating position, a stable arrangement substantially at a right angle between uprights 4 and the crosspiece element 5.
- the hinging means 6 comprises two hinge assemblies 11 (Fig. 7) interposed between each upright 4 and the crosspiece element 5.
- each hinge assembly 11 comprises a first plate-like element 12 internally anchored to the crosspiece element 5 also by a horizontal expansion 12a and a vertical expansion 12b and a second plate-like element 13 anchored internally of the corresponding upright 4 also by means of a tab 13a vertically aligned in said operating position.
- the first plate-like element 12 is provided at its end with a first through seating 14 adapted to house a pivot pin 15 defining the hinge axis 7.
- the pivot pin 15 is also housed in a second through seating 16 formed at the end of the second plate-like element 13 and shaped in the form of an elongated hole adapted to define a vertically-oriented backlash for the pivot pin itself 15 when upright 4 is disposed at a right angle relative to the crosspiece element 5. In this way the crosspiece element load exclusively bears on the abutment areas 4b of uprights 4 and not on the pivot pin 15 and related plate-like elements 12 and 13.
- Both the side uprights 4 and the crosspiece element 5 comprise respective end faces 4c and 5c for pairing with corresponding end faces of other articles of manufacture provided with hollows 4d and 5d that altogether form empty areas adapted to house concrete castings defining connecting joints between adjacent articles of manufacture.
- the vertical joints between next adjacent uprights are also obtained by making use of flexible connecting sheets 17 to be inserted in hollows 4d and defining partial-holding envelopes for the concrete castings intended to form said joints.
- connecting elements 17 avoid any concrete escape into the hollow spaces 18 between adjacent panels (see Fig. 3) and therefore allow said panels to be maintained surface-clean so that they can be optionally submitted to another sealing of the traditional type by a cementing material.
- end faces 4c and 5c of uprights 4 and crosspiece element 5 have respective indented areas 4e and 5e of an extension transverse to the major extension direction of said faces.
- each upright 4 comprises a second end portion 4f intended to define a support foot or base at which the reinforcement elements are provided with fitting elements 19 having outwardly projecting portions adapted to constitute unidirectional fittings external to the section formed by the article of manufacture in an operating position (see Fig. 2).
- a rigid plate or equalizer device For handling of each article of manufacture a rigid plate or equalizer device is used which is provided, at the lower part thereof, with four hooks to be engaged with the respective eyebolts or lifting rings disposed on the panel extradoses. This enables the panels to be maintained in an aligned position (see Fig. 9).
- the equalizer device engages the article of manufacture by means of the four hooks of the crosspiece element, so as to enable rotation of the two side panels upon their own weight during the same lifting operation (see Fig. 8).
- the stable arrangement at a perfect right angle of the uprights is completed close to the means of transport by the use of an iron straightening apparatus or template having a safety adjustment function.
- the particular position of the hinge assemblies 11 causes the automatic abutment of the rest areas 5b of the crosspiece element 5 against the abutment areas 4b of uprights 4 as soon as the latter take a vertical position.
- the connecting elements 8 during rotation of uprights 4 are bent and keep the arc of the centre portion 8c substantially undeformed by virtue of the stiffening means 9, bringing the side portions 8d against the flat locating areas 10 so that they take a rectilinear conformation.
- the article of manufacture does no longer require any prop, and once the article has been installed, uprights are to be put perpendicularly by acting on the braces of the temporary template.
- a foundation strip obtained by casting of special strata engages the fitting element 19 to the upright base.
- the invention achieves important advantages.
- the article of manufacture in accordance with the invention has the essential features of resistance to deformation and absence of crackings under even very high vertical loads possibly of the asymmetric type too, as can be ascertained in the case in which laying underground takes place at one side only.
- the article of manufacture can be produced in a flat condition in the appropriate sizes for making rectangular tunnels of any section, the only constraint being that of the panel width that must not exceed 2.5 metres for transportation requirements, and can be easily transferred to the place of use together with other units maintained in an aligned position and disposed in a stacked relationship on the loading platform of a motor-vehicle (Fig. 9).
- element 8 due to its own arc-shaped conformation and its arrangement relative to the centre of curvature, when the article of manufacture reaches the tunnel configuration, is advantageously already capable by itself of bearing horizontal loads, even if asymmetric.
- means 9 and surfaces 10 contribute in an essential manner to the assurance of an appropriate deformation of element 8.
- the latter in addition, once uprights are in a vertical position, is already in the correct position for defining an appropriate reinforcement for the casting to be poured into the hinging area between the crosspiece and uprights.
- the article of manufacture is particularly adapted to make technological underground ducts under the urban road network, thereby enabling an important reduction in construction times and costs for urbanization works and a consequent reduction in management costs for facilities placed therein.
Landscapes
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Electromagnetism (AREA)
- Lining And Supports For Tunnels (AREA)
- Rod-Shaped Construction Members (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
Abstract
Description
- Fig. 1 is a fragmentary front view of an article of manufacture in accordance with the invention disposed in an operating position;
- Fig. 2 is a side view of end portions of two articles of manufacture arranged in succession to form a tunnel;
- Fig. 3 is a section taken along line III-III in Fig. 2;
- Fig. 4 is a fragmentary side view of the article of manufacture shown in Fig. 1, having a pair of panels disposed in mutual alignment;
- Fig. 5 is a side view of a first plate-like element of a hinge assembly of the article of manufacture shown in Fig. 1;
- Fig. 6 is a diagrammatic side view of a second plate-like element of a hinge assembly of the article of manufacture shown in Fig. 1;
- Fig. 7 is a top view of the plate-like elements seen in Figs. 6 and 7 in an assembled condition to form said hinge assembly;
- Fig. 8 shows a mounting step of the article of manufacture; and
- Fig. 9 highlights some articles of manufacture at an aligned position for transportation on lorries.
Claims (13)
- A prefabricated article of manufacture made of reinforced concrete for tunnel construction, in particular for underground ducts and cables, comprising :at least two adjacent panels (2), each consisting of a concrete body (3) and iron reinforcing elements, said reinforcing elements comprising connecting elements (8) between said panels (2), each of said connecting elements (8) having at least two opposite anchoring portions (8a) respectively fitted into two adjacent panels and at least one outer partly bendable connecting portion (8b), andhinging means (6) interposed between said panels and adapted to enable the panel rotation about a hinge axis (7) defined by a pivot pin (15) between a substantially aligned position and an operating position arranged at an angle, said connecting portion being partly bent during said rotation, said outer portion (8b) of said connecting element (8) comprising a curved arc-shaped centre portion (8c) having a centre disposed on the side involving said hinge axis (7) and two substantially curved side portions (8d) in said aligned position presenting the respective centres on tne opposite side relative to said hinge axis (7).
- An article of manufacture as claimed in claim 1, characterized in that it comprises stiffening means (9) adapted to substantially keep the shape of said centre portion (8c) unchanged during said rotation and means (10) for controlling the deformation of said portions and adapted to determine a rectilinear conformation of the latter in said operating position.
- An article of manufacture as claimed in claim 2, characterized in that said stiffening means (9) is defined by a tie-rod element fastened to the end of said centre portion (8).
- An article of manufacture as claimed in claim 2, characterized in that said means for controlling the deformation of said side portions (8d) comprises flat locating areas (10) formed on said adjacent end portions (4a, 5a) of said panels (4, 5), said side portions (8d) abutting against said locating areas (10) in said operating position.
- An article of manufacture as claimed in claim 1, characterized in that each of said panels (2) has a substantially flat conformation.
- An article of manufacture as claimed in claim 5, characterized in that provision is made for three panels (2) comprising two side panels (4) and a centre panel (5) adapted to define two uprights and a crosspiece element in said operating position.
- An article of manufacture as claimed in claim 6, characterized in that each of said uprights (4) comprises a first end portion (4a) close to said crosspiece element (5) and having an abutment area (4b) for a corresponding end rest area (5b) of the crosspiece element (5), said abutment area (4b) and rest area (5b) being adapted to determine, in said operating position, a stable arrangement at a substantially right angle between said upright (4) and crosspiece element (5).
- An article of manufacture as claimed in claim 7, characterized in that said hinging means (6) comprises at least two hinge assemblies (11) interposed between each upright (4) and said crosspiece element (5) and in that each said hinge assembly (11) comprises a first plate-like element (12) anchored to said crosspiece element (5), a second plate-like element (13) anchored to one said upright (4) and a pivot pin (15) defining said hinge axis (7) and housed in through seatings (14, 16) formed in said plate-like elements (12, 13).
- An article of manufacture as claimed in claim 8, characterized in that the through seatings (16) of said second plate-like elements (13) are shaped in the form of an elongated hole adapted to define a vertically oriented backlash for said pivot pin (15) in said stable arrangement substantially at a right angle.
- An article of manufacture as claimed in claim 1, characterized in that said panels (2) comprise end faces (4c, 5c) pairing with corresponding end faces (4c, 5c) of other articles of manufacture having hollows (4d, 5d) adapted to house concrete castings defining connecting joints between adjacent articles of manufacture.
- An article of manufacture as claimed in claim 10, characterized in that said end faces (4c, 5c) have indented areas (4e, 5e) having an extension transverse to the major extension direction of the end faces themselves.
- An article of manufacture as claimed in claim 11, characterized in that it comprises flexible sheets (17) to be inserted in said hollows (4d) and defining envelopes for partial holding of concrete castings intended to form said connecting joints.
- An article of manufacture as claimed in claim 7, characterized in that each of said uprights (4) comprises a second end portion (4f) intended to define a support base, and in that said reinforcement elements comprise fitting elements (19) having outwardly projecting portions at said support base and adapted to define unidirectional fittings external to the section formed by the article of manufacture in said operating position.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP97830207A EP0875662B1 (en) | 1997-04-30 | 1997-04-30 | Prefabricated article of manufacture made of reinforced concrete for tunnel |
ES97830207T ES2148921T3 (en) | 1997-04-30 | 1997-04-30 | PREFABRICATED ARTICLE OF REINFORCED CONCRETE FOR TUNNEL. |
PT97830207T PT875662E (en) | 1997-04-30 | 1997-04-30 | "PREFABRICATED CONSTRUCTION ARTICLE FOR TUNNELS MADE OF REINFORCED CONCRETE" |
AT97830207T ATE193921T1 (en) | 1997-04-30 | 1997-04-30 | PRECAST REINFORCED CONCRETE PART FOR TUNNEL CONSTRUCTION |
DE69702302T DE69702302T2 (en) | 1997-04-30 | 1997-04-30 | Precast reinforced concrete part for tunnel construction |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP97830207A EP0875662B1 (en) | 1997-04-30 | 1997-04-30 | Prefabricated article of manufacture made of reinforced concrete for tunnel |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0875662A1 EP0875662A1 (en) | 1998-11-04 |
EP0875662B1 true EP0875662B1 (en) | 2000-06-14 |
Family
ID=8230627
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97830207A Expired - Lifetime EP0875662B1 (en) | 1997-04-30 | 1997-04-30 | Prefabricated article of manufacture made of reinforced concrete for tunnel |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0875662B1 (en) |
AT (1) | ATE193921T1 (en) |
DE (1) | DE69702302T2 (en) |
ES (1) | ES2148921T3 (en) |
PT (1) | PT875662E (en) |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2905165A1 (en) * | 1979-02-10 | 1980-08-21 | Karl Seitz | Three dimensional concrete building unit - has spaced interfacing sections swinging together, with mutual end support |
DE3224307A1 (en) * | 1982-06-29 | 1983-12-29 | Siemens AG, 1000 Berlin und 8000 München | Building member comprising at least two rigid reinforced wall parts held together and inclined relative to one another along straight edges |
IT1180072B (en) * | 1984-06-05 | 1987-09-23 | Carlo Chiaves | PREFABRICATED SUPPORT STRUCTURE AND COVERING PARTICULARLY FOR THE CONSTRUCTION OF GALLERIE BRIDGES AND SIMILAR |
-
1997
- 1997-04-30 PT PT97830207T patent/PT875662E/en unknown
- 1997-04-30 AT AT97830207T patent/ATE193921T1/en not_active IP Right Cessation
- 1997-04-30 DE DE69702302T patent/DE69702302T2/en not_active Expired - Fee Related
- 1997-04-30 EP EP97830207A patent/EP0875662B1/en not_active Expired - Lifetime
- 1997-04-30 ES ES97830207T patent/ES2148921T3/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0875662A1 (en) | 1998-11-04 |
DE69702302T2 (en) | 2001-01-18 |
ES2148921T3 (en) | 2000-10-16 |
DE69702302D1 (en) | 2000-07-20 |
PT875662E (en) | 2000-11-30 |
ATE193921T1 (en) | 2000-06-15 |
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