EP0010556A1 - Verfahren und Vorrichtung zum Erstellen einer Strassendecke, einer Rollbahn oder dergleichen - Google Patents

Verfahren und Vorrichtung zum Erstellen einer Strassendecke, einer Rollbahn oder dergleichen Download PDF

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Publication number
EP0010556A1
EP0010556A1 EP78200279A EP78200279A EP0010556A1 EP 0010556 A1 EP0010556 A1 EP 0010556A1 EP 78200279 A EP78200279 A EP 78200279A EP 78200279 A EP78200279 A EP 78200279A EP 0010556 A1 EP0010556 A1 EP 0010556A1
Authority
EP
European Patent Office
Prior art keywords
concrete
tightening
groove
stretching
stretching elements
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.)
Granted
Application number
EP78200279A
Other languages
English (en)
French (fr)
Other versions
EP0010556B1 (de
Inventor
Jan Groenveld
Tjako Aaldrik Wolters
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ingenieursbureau voor Systemen en Octrooien Spanstaal BV
Original Assignee
Ingenieursbureau voor Systemen en Octrooien Spanstaal BV
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ingenieursbureau voor Systemen en Octrooien Spanstaal BV filed Critical Ingenieursbureau voor Systemen en Octrooien Spanstaal BV
Priority to EP78200279A priority Critical patent/EP0010556B1/de
Priority to DE7878200279T priority patent/DE2862217D1/de
Publication of EP0010556A1 publication Critical patent/EP0010556A1/de
Application granted granted Critical
Publication of EP0010556B1 publication Critical patent/EP0010556B1/de
Expired legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C7/00—Coherent pavings made in situ
    • E01C7/08—Coherent pavings made in situ made of road-metal and binders
    • E01C7/10—Coherent pavings made in situ made of road-metal and binders of road-metal and cement or like binders
    • E01C7/14—Concrete paving
    • E01C7/16—Prestressed concrete paving
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/12—Mounting of reinforcing inserts; Prestressing
    • E04G21/121—Construction of stressing jacks

Definitions

  • the invention relates to a method of manufacturing a road surface, a runway or the like by at least one sequence of concrete slabs separated from one another in the concrete path by a dilatation groove, in which at least one of the concrete slabs is made by casting concrete mortar in situ on a foundation, whilst anchors of stretching elements extending in the direction of length of the concrete slab are fastened to the casing beams and in which the stretching elements are tightened after at least partial curing of the concrete.
  • Such a method is known. Therein first a main portion of a concrete slab is made, after which at least one head rim completing the concrete slab and bounding the dilatation groove is cast to the main portion, whilst during the manufacture of the main portion about 60% of the number of stretching elements is provisionally anchored by means of intermediate anchors arranged at the interface between the main portion and the head rim and prior to casting the head rim the 60% of the number of stretching elements is pre-tightened. Pre-tightening is carried out by means of tensile forces conducted via the two concrete slabs bounding the dilatation groove into the foundation. Therefore, the overall tensile forces are limited to the frictional forces between a concrete slab and its foundation.
  • stretching elements of these two concrete slabs are intercoupled by means of coupling stretching elements extending across the groove anchors of the two concrete slabs.
  • coupling stretching elements extending across the groove anchors of the two concrete slabs.
  • the invention has for its object to enhance the strength of the concrete slab at the head rim.
  • essentially all stretching elements of a concrete slab are post-tightened and anchored on groove anchors provided near the dilatation groove, the post-tightening force bearing on the concrete of the slab concerned.
  • the invention relates to and provides in addition an improved device for carrying out the method according to the invention comprising tightening means for tightening the stretching elements and being characterized in that the tightening means comprise one hydraulic, linear tightening motor, the axial length of which is smaller than the width of the dilatation groove.
  • a road surface, runway or the like 1 of concrete (see Figure 1) is made from at least one sequence of concrete slabs 3 separated from one another by a dilatation groove 2.
  • Each concrete slab 3 is made by casting concrete mortar in situ on a foundation 4 between two casing beams 6 arranged at the two head ends 5 of the concrete slab and between two longitudinal beams 7.
  • First a main portion 9 is made for each concrete slab 3 and subsequently a head rim 10 completing the concrete slab 3 is cast to the main portion 9 adjacent the dilatation groove 2.
  • stretching elements 11 of stretching cables are provisionally anchored by means of intermediate anchors 8 disposed at the interface 12 between the main portion 9 and the head rim 10 and definitely by groove anchors 13 disposed at the dilatation groove 2.
  • each stretching element 11 can be tightened by means of known tighteners 16 each comprising a frame 17 supporting via the casing beam 6 on the concrete 14 of the main portion 9, a clamp 18 engaging the stretching element 11 and two linear hydro-motors 19 fastened to the clamp 18, the piston rods 20 of which are secured to the frame 17.
  • tighteners 16 each comprising a frame 17 supporting via the casing beam 6 on the concrete 14 of the main portion 9, a clamp 18 engaging the stretching element 11 and two linear hydro-motors 19 fastened to the clamp 18, the piston rods 20 of which are secured to the frame 17.
  • the hydro-motors 19 When the hydro-motors 19 are energized, the stretching element 11 is stepwise tightened to the required stress.
  • the very long, narrow concrete slabs 3 may have an overall length of the order of magnitude of 150 metres.
  • the stress is partly produced in stages, for example, by stretching the stretching elements 11 each in order of succession by 25%, 50%, 75% and after total curing to about 100% of the prescribed elongation.
  • each stretching element 11 is stretched to a predetermined elongation of the stretching element 11, after which each stretching element 11, subsequent to the formation of the main portion 9, is anchored definitely in groove anchors 13 and temporarily in intermediate anchors 8.
  • the groove anchor 13 consists of a sleeve 22 fastened to a metal plate 21, in which an axially divided cone 23 is clamped.
  • the intermediate anchor 8 also consists of a sleeve 24 and an axially divided cone 25 clamped therein.
  • the intermediate anchor 8 also consists of a sleeve 24 and an axially divided cone 25 clamped therein.
  • the tighteners 16 are welded the cones 23 and 25 pressed into their anchor seats 26 and 27 retain the stretching element 11.
  • the head rim 10 is cast to the main portion 9 in a casing consisting of the groove plate 47 and two longitudinal beams 23, whilst a screw rod 29 enveloped in a sleeve 51 and connected through a coupling 30 with the stretching element 11 is provided coaxially with each stretching element 11 in said casing.
  • the coupling 30 consists of a screw sleeve 31 and a nut 32 screwed thereon with an anchor seat 33 and a divided cone 34 fitting therein.
  • the stretching element 11, one end of which is formed by the screw rod 29 is tightened to 100% of the prescribed stress.
  • the tightening means 35 are arranged in the narrow space of the dilatation groove 2, which may have a width a of 8 cms and a length c of the main portion 9 being, for example, 150 metres, whilst the length b of the head rim 10 may be 60 cms.
  • These small-scale tightening means 35 comprise two hydraulic, linear motors 36 each comprising a cylinder 37,the axial length d of which is smaller than the width a of the dilatation groove 2.
  • each stretching element 11 from groove anchor 13 to anchor 46 consists of an uninterrupted worm rod so that the coupling 30 is omitted, whilst the intermediate anchor 8 consists of a flange 49 with a nut 50.
  • Figure 3 shows a dilatation groove 2 bounded by groove plates 21 and 47 with lugs 65 supporting standing profiles 66, when they are welded to the groove plates 21 and 47 at the joints 67.
  • an elastic strip 68 extending transversely of the dilatation groove 2 in a compressed state.
  • the stretching elements 11 are formed by a cable extending from groove anchor 13 to groove anchor 53.
  • the groove anchor 53 comprises a sleeve 24 with a guide sleeve 54 and an anchor seat 55 for an axially divided cone 56.
  • the sleeve 24 is screwed onto a screw sleeve 52 welded to the groove plate 21.
  • two tighteners 35 are arranged in the dilatation groove 2, said tighteners comprising an axially divided clamping cone 58 urged into the clamping state by means of a hydraulic, linear motor 60 setting off from a tightening plate 59.
  • a lug 62 of the tightening plate 59 co-operates with a hook 61 of the motor 60, whose sleeve-like plunger 63 urges, upon energization, the clamping cone 58 into a conical seat 57 of the tightening plate 59.
  • a hydraulic, linear motor 80 coaxially with the tightening element 11 and the motor 60.
  • the plunger 81 of the motor 80 has an annular shape and bears on the groove plate 21 when the motor 80 is energized. Then the cone 25 is lifted from its anchor seat 27. After adequate tightening of the stretching element 11 throughout its length, the cone 56 forming a retaining member is pressed into its anchor seat 55 by means of two spacer sleeves 82 and a hydraulic, linear motor 69 bearing on the tightening plate 59 and arranged in the plunger 81 of the motor 80 in a coaxial position.
  • each concrete slab 3 is formed as a whole and all, for example, 10 or 20 spaced, parallel stretching elements 11 are post-tightened from the narrow dilatation groove 2 by tightening means 70.
  • Only groove anchors 71 are provided at the ends of the stretching elements 11 near the dilatation grooves 2.
  • Opposite each stretching element 11 the adjacent end of the next concrete slab 3 has a coaxial recess 72.
  • the stretching elements 11 of successive concrete slabs 3 are relatively off-set over a small distance g. From the detail of Figures 10 and 11 it will be apparent that the groove anchor 71 is identical to the groove anchor 53.
  • the tightening means 70 comprise a tightening plate 73, which clamps the stretching element 11 by means of a clamping sleeve 74 and a clamping cone 75 and which bears on a pressure plate 77 by means of two hydraulic, linear motors 76 during tightening of the stretching element 11, said plate 77, in turn, bearing on the groove plate 21 of the concrete slab 3 through two small hydraulic, linear motors 78 in which upon energization the fluid pressure exceeds that of the motors 76.
  • the motors 78 are de-energized so that the pressure of the motors 76 urges via the - sleeves 82 the cone 56 lifted previously from its anchor seat 55 back into its anchor seat 55. Subsequently the motors 76 are de-energized and the tightening plate 59 is shifted in the direction of the arrow 79 a slight distance along the stretching element 11.
  • a next tightening step can be initiated so that each time the stretching element 11 penetrates over the length of the elongation further into the recess 72.
  • the portion extending in the dilatation groove 2 is severed and the tightening means 70 can be removed for use on a further stretching element 11.
  • the tightening means 83 of Figure 12 comprise a split wedge 84 driven in between a tightening plate 73 and the spacer sleeves 82 for repelling the cone 56 back into its anchor seat 55.
  • the wedge 84 is withdrawn by means of handles 85 from between the tightening plate 73 and the sleeves 82.
  • each stretching element 11 is tightened by means of a conventional tightener 16, which bears through a curved tubing 86 and a pressing plate 87 with two hydraulic, linear motors 88 on the groove plate 21 of the relevant concrete slab 3, the stretching element 11 of which has to be tightened.
  • the tubing 86 extends across a recess 89 in the next-following concrete slab 3.
  • the pressing plate 87 with the motors 88 operates like the pressing plate 77.
  • This tightening operation need not be carried out stepwise, whilst in addition the concrete slab 3 can be formed in a single run with the aid of a concrete mortar wiper (not shown), which is not hindered by tightening means projecting out of the concrete slab 3 and the adjacent dilatation groove 2.
  • each stretching element 11 may, if desired, be fixed in its sleeve 15 by means of the surrounding concrete, which is injected into it through a recessed inlet channel 90.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Bridges Or Land Bridges (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
EP78200279A 1978-10-30 1978-10-30 Verfahren und Vorrichtung zum Erstellen einer Strassendecke, einer Rollbahn oder dergleichen Expired EP0010556B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP78200279A EP0010556B1 (de) 1978-10-30 1978-10-30 Verfahren und Vorrichtung zum Erstellen einer Strassendecke, einer Rollbahn oder dergleichen
DE7878200279T DE2862217D1 (en) 1978-10-30 1978-10-30 Method and device for manufacturing a road surface, a runway or the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP78200279A EP0010556B1 (de) 1978-10-30 1978-10-30 Verfahren und Vorrichtung zum Erstellen einer Strassendecke, einer Rollbahn oder dergleichen

Publications (2)

Publication Number Publication Date
EP0010556A1 true EP0010556A1 (de) 1980-05-14
EP0010556B1 EP0010556B1 (de) 1983-03-30

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP78200279A Expired EP0010556B1 (de) 1978-10-30 1978-10-30 Verfahren und Vorrichtung zum Erstellen einer Strassendecke, einer Rollbahn oder dergleichen

Country Status (2)

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EP (1) EP0010556B1 (de)
DE (1) DE2862217D1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007008999A2 (en) 2005-07-13 2007-01-18 Applied Materials, Inc. Localized surface annealing of components for substrate processing chambers
CN107447616A (zh) * 2017-09-01 2017-12-08 西安汉河环保科技有限公司 一种斜向预应力混凝土模块化施工工艺
CN113652965A (zh) * 2021-06-23 2021-11-16 中铁建工集团山东有限公司 一种斜拉索空间定位张拉施工系统及张拉施工方式

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3022713A (en) * 1954-11-26 1962-02-27 Bengt F Friberg Prestressed concrete structures
DE1658478A1 (de) * 1967-06-29 1972-06-08 Hochtief Ag Hoch Tiefbauten Fahrbahndecke od.dgl.aus Stahlbeton und Verfahren zu ihrer Herstellung

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2755523A1 (de) * 1977-12-13 1979-06-21 Dyckerhoff & Widmann Ag Verfahren zum erneuern einer unbrauchbar gewordenen fahrbahndecke

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3022713A (en) * 1954-11-26 1962-02-27 Bengt F Friberg Prestressed concrete structures
DE1658478A1 (de) * 1967-06-29 1972-06-08 Hochtief Ag Hoch Tiefbauten Fahrbahndecke od.dgl.aus Stahlbeton und Verfahren zu ihrer Herstellung

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
HIGHWAYS AND ROAD CONSTRUCTION, Vol. 42, No. 1769, January 1974, Sutton, Surrey, GB "PS concrete pavement could be competitive", pages 22 and 23. * Page 22, lines 18-26, 30-33, 37-39 * *
WEGEN, Vol. 43, No. 6-643, June 1969, Boskoop (Netherlands) "Schiphol. Het tangentiele banenstelsel voltooid", pages 174 to 180. * Page 178, left-hand column, lines 34/35; right-hand column, lines 5-8, 16, 22/23, 38-48; figures 3,4; page 179, right-hand column, lines 11-23 * *
WEGEN, Vol. 44, No. 9-658, September 1970, Boskoop (Netherlands) W.M. DE WIJS "De uitvoering van het wegvak in voorgespannen beton bij Vlijmen", pages 230-237. * Page 230, right-hand column, lines 34/35; page 232, left-hand column, lines 15-19, 31-46, right-hand column, lines 11-22, 26-28; figure 3; page 233, figure 4; page 234, left-hand column, lines 9-20, 25-28, 33-40, 53/54, right-hand column, lines 1-3, 5/6 * *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007008999A2 (en) 2005-07-13 2007-01-18 Applied Materials, Inc. Localized surface annealing of components for substrate processing chambers
CN107447616A (zh) * 2017-09-01 2017-12-08 西安汉河环保科技有限公司 一种斜向预应力混凝土模块化施工工艺
CN113652965A (zh) * 2021-06-23 2021-11-16 中铁建工集团山东有限公司 一种斜拉索空间定位张拉施工系统及张拉施工方式

Also Published As

Publication number Publication date
EP0010556B1 (de) 1983-03-30
DE2862217D1 (en) 1983-05-05

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