DE1784675A1 - Joint insert for road or bridge span sections - Google Patents

Description

The invention relates to joint inserts for insertion between Road or bridge span sections un <? especially one f. road-forming adjacent bridge or crossing structure span sections.

In such adjacent sections, relative movement can take place as a result of thermal expansion. One known form of joint insert for absorbing such relative movement consists of a flat elastic strip, usually made of rubber, which bridges the gap between adjacent sections and anchors Lr> t to the sections L / ings at their adjacent edges.

BAD ORDINAL

P. 3299

The object of the invention is to create a joint insert with improved means for securing the built-in insert on the respective road or span sections, which it connects to prevent unwanted loosening of the support.

The invention is also intended to create an insert, which is simple, tough and cheap and which can also be installed and removed easily and quickly.

The invention relates to a joint insert for connecting adjacent road or bridge tensioning sections a strip or band of elastic material that can bridge adjacent edges of these sections, which Stripes on its opposite longitudinal edges with downwardly directed swallowtail-shaped swallowtail »transverse · cut is formed, which by deforming the strip into U-profiles of appropriate dovetail « Cross-section can be set, which latter can be attached to the sections along their edges.

The insert according to the invention can be installed or removed without disturbing the load-bearing structure of the adjacent road or tension sections.

"~ BAD ORIGINAL

D5 / OS2tt

P. 3299

The invention is described below with reference to the accompanying drawings for example described in more detail, namely show:

Fig. 1 is a schematic view in cross section according to a vertical plane perpendicular to the adjacent edges of two tensioning sections, with a joint insert

built according to one embodiment of the invention ™ is; '

FIG. 2 is a partial view in a diagrammatic bar position, which Fig. 1 shows a stage of the installation process of the joint insert shown in Fig. 1;

Fig. 3 is a partial view in cross-section and plated in auseinanderger · view of an edge of a groove insert, showing how the insert in a U-profile at t its installation can be used;

Fig. 4 is a partial view in perspective and exploded Representation of a joint insert according to one of the one shown in FIGS. 1 and 2 modified Embodiment and

FIG. 5 is a partial view in section and exploded along the line V-V in FIG. 4.

108885/0528 _B * o

P. 3299

Two adjacent span sections 21 * and 22 'of a street, bridge, an intersection structure or the like. are made by reinforced concrete beams formed with parallel adjacent edges, which overlapped by steel beams 71, 71 'and by a Gap 2t> are separated from each other. The gap 26 expands in the case of temperature fluctuations, - which affect the clamping sections 21 ', 22 'take effect, from or contracts.

In the illustrated embodiment, the tensioning sections 21 ', 22 * carry a road with a surface layer 25 which rests on a road substructure 25a, which in turn is supported by the tensioning sections 21', 22 '.

A joint insert 60 connects the two clamping sections 21 », 22 ^? and bridges the gap 26, the insert 60 consists of a rubber strip 61 with opposite flat sides which are provided with transverse grooves. The strip 61 is formed with two downwardly directed beads 62 on its longitudinal edges. Each bead 62 has a cross-section of a dovetail shaped profile in the manner of a graduated isosceles triangle or a symmetrical trapezoid with a width Λ at its upper end and a significantly larger width B at its lower end.

- 4 - BATHROOM

109885/0528

P. 3299

For the installation of the insert 60, the two beads 62 are pressed into strips 61 in two U-profiles 63 which have previously been attached to the two clamping sections 21 ', 22 ¹ to be connected to one another. Each U-profile 63 is open at the top and has a dovetail-shaped internal shape * in cross section which corresponds to that of the bead 62.

In order to facilitate the insertion of the beads 62 in the U-profile 63, said insert comprising impressions manner shown 2 xtfird 60 forming strip 61 as shown in FIG. Bent so "daf to ihTen curved portions 62 ^f, the beads 62 on the convex surface of the curved strip, thereby stretching them. This stretching is accompanied by a reduction in the cross-sectional area of each tip 62, which is sufficient to enable the bead to be inserted into the U-profiles 63 without difficulty. 3 shows the cross section of the curved area 62 * of one of the beads, from which the reduced width B ¹ at the lower end can be seen j which is equal to or less than the width A 3.21 of the open upper end of the U-profile 63.

When the strip 61 is straightened by its connection to the tensioning sections 21 *, ^22f , the bulges 62 take their original sizes and shapes in the profiles 63 oin, in which they are formed by the corresponding swallow

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Sdwanzform the beads 62 and the U-profiles 63 firmly anchored will.

Each VJuIst 62 is preferably provided with a longitudinal bore 64 of cylindrical shape, provided with an elongated metal inelastic element 65 in the form of a cylindrical rod or rope after the joint 60 has been installed is used to stiffen the bead 62 and to prevent the bead from coming out of the respective U-profile 63. The elements 65 increase the resistance « ability of the two beads 62 against compression and thus a substantial deformation of the Vulste 62, so that the the latter are effectively secured in the U-profiles 63.

In dor in FIGS. 4 and 5, the two embodiment illustrated VJuIsto are provided 62 of the strip 61 having spaced-apart transverse recesses 66 which intersect the, longitudinal bores 64. The transverse recesses 66 are open at the bottom and can accommodate auxiliary holding elements in the form of rings 67, which are arranged in the U-profiles 63 and attached to their (! Round, for example by welding.

The elements 65 are inserted into the bores 64

· ■ e .j- BAD ORlGiNAL

109885/0528

P. 3299

passed through the rings 67, whereby the anchoring of the strip 61 on the two tensioning sections 21 · -, 22 » is improved.

The U-profiles 63 v / ground previously attached to the clamping sections 21 *, 22 ^f . Dei the Ausffihrungs-form of Fig. 1 and 2, the U-profiles 63 parts of prefabricated reinforced concrete edge λ secured 69 by means of shared anchoring elements 68, soft with the bottom of each U-profile 63 is welded, and are embedded in the lietonteile 69.

If, as shown in Fig. 1, the supports 71, 71 * of the clamping sections 21 ·, 22 * have flat upper sides, the prefabricated steel concrete parts 69 with the U-profiles 63 attached to them are subsequently detachable by means of bolts 70 on the upper sides of the Sptumabschnitte 21 ', 22 * so secured that the parts 69 on the top sides of the carrier 71, 71 * Open (rest.

This facilitates the assembly and insertion of the joint insert 60 is made much easier because it is not necessary to use cement, mortar or the like. when establishing the connection to \ '<m; because the joint insert 60 at the tensioning sections 21-, 22 · is attached in a simple V / eise in that the

109885/0528 construction ^ ^ »4

P. 3299

Bolts 70 are passed and nuts located on these are tightened.

A road surface is produced in a manner known per se on the tensioning sections 21 ^f , 22 'after the joint insert 60 has been formed by placing the substructure 25a on the tensioning sections and then applying the surface layer 2i flush with the top of the joint strip 61 .

To remove the joint insert 60, the elements 65 are made the holes 64 removed and the strip 61 is removed by the fact that the pulses 62, which then deform freely can be pulled out of the U-profiles 63.

" ⁸ BAD ORIGINAL

109885/0528

Claims (6)

P. 3299 September 4, 1968 Claims: "} Joint insert to connect neighboring street or I.
1 Bridge tensioning sections in the form of a strip of elastic material, for example rubber, which is used for this serves, adjacent Xanten of the road or span sections to upper bridges, characterized in that the Strip (61) on its opposite longitudinal edges with downwardly directed beads (62) of dovetail-shaped cross-section, which can be used when deforming the strip (61) in U-profiles (63) of corresponding dovetail-shaped cross-section, which U-profiles on the road or tensioning sections (21 ^f , 22 ') can be attached along their edges. 2. Joint insert according to claim 1, characterized in that means are provided which prevent undesired emergence of the beads from the IT profiles after the installation of the Prevent joint insert. - 9 -109885/0528 P. 3299 3. Joint insert according to claim 2, characterized in that said means by elongated inelastic Elements (65) are formed which, after the joint insert has been installed, are inserted into longitudinal bores (64) which extend through the beads (62) in order to stiffen the latter and prevent such deformation of the same as to enable it to emerge from the U-profiles. 4. Joint insert according to claim 3, characterized in that each bead (62) is provided with at least one downwardly open transverse recess (66) which the respective Longitudinal bore (64) intersects, and annular retaining elements (67) are attached within the U-profiles (63) and arranged so that they enter the recesses (66) when installing the joint insert (60), so that the respective ) Elongated element (65) passes through the annular holding elements (67) when you sit down in the bores (64) and thereby additionally anchors the beads (62) on the U-profiles (63). 5. Joint insert according to claims 1 to 4, characterized in that the U-profiles (63) are attached to prefabricated reinforced concrete parts (69) and means, for example Bolts (70), for legible fastening of the reinforced concrete parts (69) to the top of adjacent road or tensioning - 10 - BAD OR (GtNAL 109885/0528 P. 3299 Sections (21 ', 22 *) are provided. 6. Joint insert according to claims 1 to 5, characterized in that that the strip (61) of resilient material has opposite flat sides shaped with grooves which extend essentially transversely to the longitudinal axis of the strip (61), as per se began, 7, joint insert according to claims 1 to 6, characterized in that the dovetail-shaped cross-section of the bulges (62) is such that the bulges stretch when the strip (61) is bent, so that the bulges (62) are convexly curved (62 ¹ ), is accompanied by a sufficient reduction in the cross-section of the beads (62) to enable the latter to be inserted into the U-profiles (63). - 11 109885/0528