US2301137A - Means for resiliently interlocking concrete road slabs - Google Patents

Means for resiliently interlocking concrete road slabs Download PDF

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Publication number
US2301137A
US2301137A US245439A US24543938A US2301137A US 2301137 A US2301137 A US 2301137A US 245439 A US245439 A US 245439A US 24543938 A US24543938 A US 24543938A US 2301137 A US2301137 A US 2301137A
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Prior art keywords
plates
slabs
concrete
hip
dowel
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US245439A
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English (en)
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Musall Alexander
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Individual
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    • 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
    • E01C11/00—Details of pavings
    • E01C11/02—Arrangement or construction of joints; Methods of making joints; Packing for joints
    • E01C11/04—Arrangement or construction of joints; Methods of making joints; Packing for joints for cement concrete paving
    • E01C11/12—Packing of metal and plastic or elastic materials
    • E01C11/123—Joints with only metal and in situ prepared packing or filling

Definitions

  • This invention relates to means for resiliently interlocking concrete road slabs, which means constitute the transverse joints between the slabs and remain permanently between the slabs after the joints have been formed.
  • two parallel dowel plates so spaced as to constitute a form for a .oint between two contiguous slabs, and preferably of the same length as this joint, have inwardly inclined upper portions rigidly united at their upper edge in the manner of a hip-roof, and are provided on their outer s des with anchoring elements consisting of pieces of sheet metal or rods welded onto the plates and disposed at right angles to the upper edge of the plates.
  • the joint-forming interlocking means according to the invention afford the further advantage that, when the road is bu lt in two superposed layers, two similar assemblies may be fitted together one vertically above the other. the lower of said assemblies corresponding in height to the thickness of the lower layer of the concrete slabs, while the upper assembly corresponds in height to the thickness of the upper concrete layer.
  • the lower assembly is destined to take up the vertical transverse forces between the slabs while the upper assembly serves primarily to form the upper part of the joint and takes up only a small part of the transverse forces so as not to allow the concrete to break away at the upper edges of the slabs.
  • FIG. 1 is a perspective view of one embodiment
  • Fig. 2 is a transverse section of the assembly shown in Fig. 1,
  • Fig. 4 is a cross-section of the assembly shown in Fig. 3, with the upper and lower parts shown separated from each other.
  • the interlocking means for incorporation in the transverse joints of concrete road surfaces consists of two parallel sheet metal dowel plates I and 2 to the outer sides of which anchoring rods 3 are butt-welded with struts in the form of welded-on vertical sheet metal angle pieces 4.
  • the length of the dowel plates I and 2 corresponds to the breadth of the individual slabs of which the road surface is composed.
  • the dowel plates I and 2 have their upper portions inwardly inclined in the form of a hip-roof, as at 5, and they are welded together at the apex.
  • the dowel plates I and 2 may alternatively consist of a single piece of material and be formed integrally with the hip-roof portion 5 by bending.
  • the hip-roof portion 5 is encased between two welded-on side plates 6 and I, the struts 4 being preferably arranged to support these side plates also.
  • the assembly thus formed is set up on the road bed 8 transversely thereof, after which the concrete is poured and rammed, so that the upper surface of the plates I, 6 and 2, I delimits the transverse joint.
  • a coping 9 is placed on the assembly and removed after the slabs have set.
  • the joints between the slabs mav then be filled with any known .ioint filling. composition.
  • the described interlocking means prevent the slabs from knocking together at the edges" s nce the vertical transverse forces are taken up by the anchoring elements 3, dowel plates I and'2 and hio-roof portion 5, while the hip-roof portion 5 at the. same time allows of relative movement between the dowel flates I and 2 in response to longitudinal expansions and contractions of the slabs due to temperature fluctuations.
  • Figs. 3 and 4 The embodiment shown in Figs. 3 and 4 is intended for use in conjunction with concrete road slabs which are poured and rammed in two layers.
  • the dowel plates I and 2. which are rigidly interconnected by means of a hip-roof portion 5 as in the previously described embodiment. are provided on the outside with anchoring sheet metal elements III disposed at right angles to the road surface, so
  • Fig. 3 is a perspective view of a second embodithat the jointing means do not impede the work oi pouring and ramming the concrete used in making the lower layer, and no hollow spaces are formed.
  • the sheet metal anchoring elements in are provided with drilled holes ll through which may be passed anchoring rods I2 disposed parallel to the plates l and 2.
  • anchoring rods I2 disposed parallel to the plates l and 2.
  • the hip-roof portion of the dowel plates 1 and 2 is encased between side plates 8 and I.
  • the height of the plates l and 2 with the hiproo'f portion 5 is equal to the thickness of the bottom layer of the concrete road slabs.
  • the jointing assembly is stood upright across the road with its bottom flanges la and 2a resting on the road bed 8, and the lower layer of the road surface is then poured and rammed, the plates l, 6 and 2, I delimiting the joints, as before, and being anchored in the concrete by the sheet metal elements l0.
  • the interlocking assembly is closed at the top by any suitable form of coping or cap which is removed after this layer has been rammed.
  • sheet metal anchoring elements I8 disposed at right angles to the road surface and serving to anchor the superstructure in the upper layer of the concrete.
  • the hollow space at the top of the superstructure between the hip-roof portion l5 and the side plates I6 and I1 is closed by means of a suitable coping which is removed after the concrete has set to allow the open joint to be filled with a jointing composition.
  • the purpose of the described superstructure is, broadly, to continue the joint out to the upper surface of the composite concrete slabs, the hip-roof portion l5 allowing the plates l3, l6 and l4, IT to yield to the expansion and contraction of the concrete slabs.
  • the sheet metal anchoring elements ID are completely embedded in the material of the slabs, so that the vertical transverse forces set up between any two contiguous slabs are taken up efiectively by the lower portion of the assembly. Since the superstructure takes up vertical transverse forces only to a slight extent, there is no danger of the concrete breaking away at the upper edges of the slabs.
  • Dowel means for resiliently interlocking concrete road slabs so as to form permanent joints therebetween comprising two dowel supporting plates of a length equal to the width of the slabs, said plates having substantially vertical parallel lower portions adapted to be placed on the road bed on their lower edges and defining between them a free unobstructed space and integral upper portions inclined towards each other and rigidly united at their upper edges to form a hip-roof constituting the only connection between said plates, anchoring elements secured to the outer sides of said parallel plate portions and projecting therefrom inoutward direction only, and parallel side plates secured to and projecting upwardly from the parallel portions of said dowel supporting plates and encasing the hip-roof portions of the latter.
  • Dowel means for resiliently interlocking concrete road slabs so as to form permanent joints therebetween comprising two dowel supporting plates of a length equal to the width of the slabs, said plates having substantially vertical parallel lower portions adapted to be placed on the road bed on their lower edges and defining between them a free, unobstructed space and integral upper portions inclined towards one another and rigidly united at-their upper edges to form a hip roof constituting the only connection between said plates, parallel side plates secured to and projecting upwardly from the parallel portions of said dowel supporting plates and encasing the hip-roof portions of the latter, and angular sheet metal struts secured to said parallel plate portions and side plates and projecting at right angles therefrom in outward direction only.
  • Dowel means for resiliently interlocking concrete road slabs so as to form permanent joints therebetween comprising two dowel supporting plates of a length equal to the width of the slabs, said plates having parallel lower por tions adapted to be placed on the road bed on their lower edges and being spaced to constitute a form for a joint between two contiguous slabs, and integral upper portions inclined towards one another and rigidly united at their upper edges to form a hip-roof, and anchoring elements including sheet metal struts secured to the .outer sides of said parallel plate portions and projecting at right angles therefrom, all the struts secured to one and the same plate being provided with aligned holes, and anchoring rods passing through said holes and being disposed parallel to said plates.
  • Dowel means for resiliently interlocking concrete road slabs and forming permanent joints therebetween in concrete roads which are manufactured in several layers, said means comprising a base member and an upper member, said base member including two dowel supporting plates of a length equal to the width of the slabs and of a height corresponding to that of the lowest cement layer, said plates having substantially vertical parallel lower portions adapted to be placed on the roadbed on their lower edges and defining between them a free, unobstructed space, and integral upper portions inclined towards one another and rigidly united at their upper edges to form a hip-roof constituting the only connection between said plates, anchoring elements secured to the outer sides of said parallel plate portions and projecting therefrom in outward direction only, and parallel side plates secured to and projecting upwardly from said parallel portions to encase said hip-roof, said upper member including two plates having parallel spaced lower portions adapted to fit between the hip-roof and vertical side plates of said base member, and upper portions integral with said parallel portions, said upper portions being inwardly inclined towards one another and rigidly

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Structures (AREA)
  • Bridges Or Land Bridges (AREA)
US245439A 1937-11-19 1938-12-13 Means for resiliently interlocking concrete road slabs Expired - Lifetime US2301137A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE521480X 1937-11-19

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US2301137A true US2301137A (en) 1942-11-03

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US (1) US2301137A (fr)
FR (1) FR846222A (fr)
GB (1) GB521480A (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3256786A (en) * 1962-06-11 1966-06-21 William F Middlestadt Concrete joint and loading transfer device
US3460447A (en) * 1967-06-20 1969-08-12 Robert J Grenzeback Unitary joint-forming structure
US3782846A (en) * 1972-02-28 1974-01-01 R Johnson Joint forming and sealing device
CN114277631A (zh) * 2022-01-21 2022-04-05 何华海 公路工程新旧路基路面拼接结构

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH646751A5 (de) * 1980-05-01 1984-12-14 Pawe Ag Verwendung von aus streckmetall oder aus blech mit aufgerauhter oberflaeche bestehenden profilelementen bei der betonierung eines bauwerkes.

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3256786A (en) * 1962-06-11 1966-06-21 William F Middlestadt Concrete joint and loading transfer device
US3460447A (en) * 1967-06-20 1969-08-12 Robert J Grenzeback Unitary joint-forming structure
US3782846A (en) * 1972-02-28 1974-01-01 R Johnson Joint forming and sealing device
CN114277631A (zh) * 2022-01-21 2022-04-05 何华海 公路工程新旧路基路面拼接结构

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Publication number Publication date
FR846222A (fr) 1939-09-12
GB521480A (en) 1940-05-22

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