EP2013419A1 - Expansion joint for pavement items and related manufacturing and assembling method - Google Patents
Expansion joint for pavement items and related manufacturing and assembling methodInfo
- Publication number
- EP2013419A1 EP2013419A1 EP06745318A EP06745318A EP2013419A1 EP 2013419 A1 EP2013419 A1 EP 2013419A1 EP 06745318 A EP06745318 A EP 06745318A EP 06745318 A EP06745318 A EP 06745318A EP 2013419 A1 EP2013419 A1 EP 2013419A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- anchor
- elements
- infrastructures
- expansion joint
- joint
- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 7
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 34
- 239000002131 composite material Substances 0.000 claims abstract description 18
- 229920005989 resin Polymers 0.000 claims description 10
- 239000011347 resin Substances 0.000 claims description 10
- 230000007797 corrosion Effects 0.000 claims description 8
- 238000005260 corrosion Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- 238000004873 anchoring Methods 0.000 claims description 6
- 239000000835 fiber Substances 0.000 claims description 6
- 239000011152 fibreglass Substances 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 239000007769 metal material Substances 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 229920001169 thermoplastic Polymers 0.000 claims description 3
- 229920001187 thermosetting polymer Polymers 0.000 claims description 3
- 239000004634 thermosetting polymer Substances 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- 238000012423 maintenance Methods 0.000 description 5
- 239000012858 resilient material Substances 0.000 description 5
- -1 humidity Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000004073 vulcanization Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/06—Arrangement, construction or bridging of expansion joints
Definitions
- the present invention relates, in general, to expansion joints to be used for joining pavement items of roads, bridges, viaducts, runways, parking areas , and similar structures.
- the present invention relates to expansion joints shaped so as to connect, for instance, pairs of pavement items comprised of concrete slabs coated with bituminous material; such expansion joints being arranged for compensating possible strains of pavement items due, for instance, to temperature changes.
- Background Art It is known that pavement items of roads, bridges, viaducts, runways, parking areas and similar structures, that, from now on, will be simply referred to as pavement elements, pavement infrastructures or infrastructures, are subject to thermal strain and that the junction, typically between pairs of pavement elements, is obtained by means of expansion joints, i.e.
- Expansion joints are known, for instance, from publications GB_1439157 and GB_1510622, having the feature to elastically adapt to the mutual strain of pavement elements.
- the known joints comprise resilient material, for instance rubber shaped in various ways for compensating strains of pavement elements, and reinforcing or anchor elements made of metal and located at the joint ends; each reinforcing element, typically, comprises at least one anchor slot for allowing to anchor, through suitable bolts associated to the pavement and anchor elements, the expansion joints to respective concrete slabs of pavement elements.
- the reinforcing elements typically have "L" shaped cross-section and are completely enclosed or embedded in the resilient material.
- the preferred solution to embed the reinforcing elements into the resilient material is dictated on one side by the need to protect the reinforcing elements from the corrosion due to external agents, such as humidity, gas or corrosive liquids, etc. and on the other part it is based on the prejudice that there is no technical advantage in putting into contact the reinforcing elements with pavement elements.
- the Applicant has found that the known solution of embedding reinforcing elements in the deformable resilient material involves a set of problems.
- the anchor slots and the bolts are, however, subject to corrosion phenomena, as they are not protected at all.
- interposing rubber between the reinforcing elements made of metal, for instance steel, and the concrete slab makes the whole joint structure not sufficiently integral with the body of the same pavement element, thus causing joint loosening and consequent deterioration of the joint.
- Disclosure of the Invention Object of the present invention is, therefore, a road expansion joint that allows to avoid the problems of frequent special maintenance of the expansion joints above described.
- a further object of the present invention is a manufacturing and installation method apt to drastically increase the reliability in time of the installed joints.
- the object is achieved by means of the expansion joint for joining pavement elements of roads, bridges, viaducts, runways, parking areas and similar structures as claimed.
- the present invention relates also to a method for making and mounting the expansion joint according to the present invention.
- the expansion joint of the present invention comprises at least one resilient element and reinforcing or anchor elements made of corrosion- proof composite material and fastened externally to the resilient element.
- the anchor elements comprise an external anchor surface arranged to be rigidly fastened to a corresponding anchor surface provided on the infrastructures to be joined.
- the anchorage between joint and infrastructure is made by interposing a resin having adhesive function between anchor elements and infrastructure.
- Fig. Ia shows a first embodiment of the expansion joint according to the present invention/
- Fig. Ib shows the first embodiment of the joint of Fig. 1, in use
- Fig. 2a shows a second embodiment of the expansion joint according to the present invention, in use
- Fig. 2b shows another version of the second embodiment, in use.
- Best mode for Carrying Out the Invention discloses two embodiments of expansion joints with the simple aim to illustrate possible different versions of such joints depending on the entity of the variation of the strain sustainable by the joints during use. Obviously, the described examples are not exhaustive of all possible embodiments.
- an expansion joint (joint) 10 for pavement elements (infrastructures) 20 (Fig. Ia, Ib) comprises a resilient element 11, and, preferably, at least one pair of anchor elements or reinforcing elements 12 fastened to the resilient element 11 and arranged to allow anchoring the joint 10 to at least one pair of pavement elements 20 by means of suitable fastening elements 15, for instance bolts.
- the resilient element 11 for instance made of rubber, comprises, in two opposite areas at the ends of the joint 10, respective connection elements 111 having one or more cavities 112 shaped for.
- the resilient element 11 further comprises, in its central area, a strain element 114, for instance an element having saw-toothed cross-section with a determined width "1" at rest; the strain element 114 is shaped so as to modify, in use, its width "1", according to the dimensional variation of pavement elements 20 in the direction of the width "1", and to sustain, therefore, the strain of infrastructures 20.
- Anchor elements 12 have, respectively, in all the different preferred embodiments, an "L" shaped cross-section, are firmly glued on or fastened to the base of the two connection elements 111 and have visible external surfaces 12a.
- the external surface 12a of the anchor elements 12 is shaped so that, in use, is in tight and firm contact with the infrastructure 20 as a result of the anchorage or fastening of the joint 10 to the infrastructure 20, as it will be disclosed later on in detail.
- Each anchor element 12 comprises at least a slot 121 in correspondence of cavity 112 and, preferably, is fastened to the resilient element 11, in a known way, by means of pressing and vulcanisation.
- Each anchor element 12 is arranged to co-operate with threaded shanks 155, for instance fastened in a known way to respective pavement elements 20, so as to allow anchoring of the joint 10 to pavement elements 20 by means of nuts 151 and washers 153.
- the joint 10 comprises a resilient element 110 (Fig.
- the resilient element 110 comprises two connection elements 111, equivalent to those already described in the first embodiment, and, on a first face, for instance the top face of the resilient element 110, one or more intermediate elements, for instance in Fig. 2a and 2b three top intermediate elements (top elements) 115a, 115b and 115c, separated, in the example, by means of four top grooves 115 having width "Is", and, for instance, triangular shape.
- the resilient element 110 further comprises, on a second face, for instance the bottom face, one or more lower intermediate elements, for instance in Fig.
- the top elements located at the end of the joint 10, respectively 115a and 115b, comprise, respectively, the top reinforcing elements (top reinforcement) 120a and 120b, while the lower intermediate element 118c comprises the lower reinforcing element 120c.
- top reinforcing elements 120a and 120b and the lower reinforcing element 120c are provided embedded into the resilient element 110
- the top reinforcing elements and 120a, 120b and the lower reinforcing element 120c are provided fastened to or, in particular, glued on the resilient element 110 so that the surface of the reinforcing elements, 120a, 120b, 120c, is left at sight on the top face and, in particular, on the lower face.
- each reinforcing element or at least each anchor element 12 is made of composite material, for instance material obtained by combination of materials as, for instance:
- thermosetting polymer - reinforced thermosetting polymer
- fibre glass or fibre of another type
- the composite material is shaped by means of hot-moulding starting from a basic composite material made of the substances mentioned above.
- a composite material has the peculiar feature of ensuring the highest mechanical strength to reinforcing elements, for instance at least equivalent to that of the metallic material, and high resistance to corrosion due for instance to external agents such as humidity, gas or corrosive liquids, etc.
- the composite material can also be obtained by combination of other materials, but, according to the preferred embodiment, it is expedient that the material has the feature of ensuring the highest mechanical strength, for instance at least equivalent to that of the metallic material, and high resistance to corrosion due to external agents, such as humidity, gas or corrosive liquids, etc.
- Each infrastructure 20 to which the joint 10 is to be anchored comprises, at the ends to be joined, for instance, a concrete slab (slab) 21 having a visible surface 21a, shaped for anchoring the joint 10 thereto, and a threaded shank 155 fastened to the slab 21 and arranged so as to allow fastening of the joint to the slab.
- slab 21 having a visible surface 21a, shaped for anchoring the joint 10 thereto, and a threaded shank 155 fastened to the slab 21 and arranged so as to allow fastening of the joint to the slab.
- the infrastructure 20 further comprises, in the described embodiments, externally to the area where the joint 10 is positioned, layers of bituminous carpet, for instance two layers 22a and 22b, known per se, having different features as regards finishing and quality.
- an edge strip or flashing 18 typically made of rubber, arranged to allow water, for instance rainwater, to flow along the joint location.
- a resin 28 for instance an anti-shrinkage resin, of known type, is coated on the surface 21a of the slab 21.
- a resin has, preferably, the purpose of working as an adhesive between the joint 10 and the infrastructure 20 besides that of contributing to maintain leveled the contact surface between anchor elements 12 and slab 21.
- the surface 21a of the slab 21 can be obtained sufficiently leveled, by using, for instance, fresh concrete, so as to allow a direct anchorage of the joint to the slab without using resin.
- a second step the joint 10, once the threaded shanks 155 are inserted into the joint slots 121, is anchored by means of washers 153 and nuts 151 to the pair of infrastructures 20.
- nuts 151 and washers, 153 are fastened with the strength necessary to ensure that the joint 10 and the infrastructure 20 become rigidly joined.
- cavities 112 in the position corresponding to the bolts 15, and possible interstitial areas 113 between layers of bituminous carpet 22a and 22b and the joint 10, are filled with a sealing material, for instance bi-component resins of known type.
- anchor elements 12 having the external surface 12a exposed externally at the base of the joint 10, are directly in contact with the surface 21a of the concrete slab 21 and rfgidly fastened to it; fastening may be helped by thp resin 2$,, if present, so that the joint 10 and the slab 21 realise a particularly rigid and firm junction and form, substantially, a single body.
- reinforcing elements 120a, 120b, 120c are preferably, made of composite material and fastened externally to the resilient element 110.
- the reinforcing element or the reinforcing elements if fastened externally to the base of the joint, have an external surface apt to come into contact with the visible surface 21a of the slab and contribute to confer rigidity to the junction between the infrastructure and the joint/ such a configuration is apt to facilitate the operation of the resilient element of the joint and in any case it does not have any corrosion risk.
- the Applicant has found that the joint 10 as described both in the first and in the second embodiment, allows to obtain, once installed, a surprising technical result because, by rendering the junction between joint and infrastructures more rigid, it prevents loosening of the bolts and, consequently, extends maintenance intervals remarkably.
- the expansion joint has been described in two embodiments. Obviously, there are various possible embodiments of the joint as well as the various shapes of the resilient element arranged to compensate strains of the infrastructures to be joined.
- the resilient element can have different shapes, as easily comprehensible to a technician in the field, according to the entity of the strains to be sustained by the joint, without departing from the scope of the invention as described and claimed.
- the shapes of the infrastructures in their end parts as well as the method of fastening the joint to infrastructures may be different from that described above, without departing from the scope of the invention as described and claimed.
- anchor elements 12 and reinforcing elements 120c adapted to come into contact with the slabs of infrastructures, may be made of composite material, while the reinforcing elements 120a, 120b directed only to reinforce the joint may be made of metallic material and, preferably, embedded in the resilient element.
Abstract
Description
Claims
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/IT2006/000306 WO2007125556A1 (en) | 2006-05-03 | 2006-05-03 | Expansion joint for pavement items and related manufacturing and assembling method |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2013419A1 true EP2013419A1 (en) | 2009-01-14 |
EP2013419B1 EP2013419B1 (en) | 2012-07-04 |
Family
ID=37623424
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06745318A Not-in-force EP2013419B1 (en) | 2006-05-03 | 2006-05-03 | Expansion joint for pavement items and related manufacturing and assembling method |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2013419B1 (en) |
CN (1) | CN101432486A (en) |
WO (1) | WO2007125556A1 (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100879160B1 (en) | 2008-09-05 | 2009-01-19 | (주)하이로드 | Expansion joint for underground driveways |
CN102635065B (en) * | 2012-05-03 | 2013-12-18 | 山西省宏图建设工程有限公司 | Zipper type deformation joint device for roads and bridges |
CN102926322B (en) * | 2012-11-06 | 2015-07-15 | 济南城建集团有限公司 | Construction method, hoisting tool, location tire and location support for installing comb-tooth-shaped expansion joint |
CN103993557B (en) * | 2014-04-02 | 2016-04-13 | 中国能源建设集团陕西省电力设计院有限公司 | A kind of conveying trestle flooring deformation joint structure and construction method thereof |
CN103966941B (en) * | 2014-04-10 | 2016-06-08 | 广东省建筑科学研究院集团股份有限公司 | A kind of can repair the constructional method that regulating course is increased at expansion joint fast |
CN104018424B (en) * | 2014-05-10 | 2016-03-09 | 浙江大学宁波理工学院 | The restorative procedure of bridge expanssion joint |
CN104060529B (en) * | 2014-06-10 | 2016-02-24 | 曹炜 | The using method of the U-shaped flange body of the stainless steel for shrinkage joint |
US9850626B2 (en) * | 2016-05-16 | 2017-12-26 | LTBB Marketing, LLC | Expansion joint seals and methods for manufacturing the same |
CN111074762B (en) * | 2019-12-11 | 2021-08-31 | 南通大学 | Seamless expansion joint of compound concrete bridge face of carbon cloth |
CN113174802B (en) * | 2021-04-30 | 2022-08-23 | 福建永宏建设工程有限公司 | High-bearing-capacity large-spacing joint cement pavement structure and construction method thereof |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2116665A5 (en) * | 1970-12-02 | 1972-07-21 | Ceintrey M | |
US4022538A (en) * | 1972-06-20 | 1977-05-10 | Watson-Bowman Associates, Inc. | Expansion joint seal |
GB1510622A (en) * | 1975-07-30 | 1978-05-10 | Tippett S | Expansion joints for roadways |
DE8137882U1 (en) * | 1981-12-24 | 1986-01-23 | Migua Hammerschmidt GmbH, 5628 Heiligenhaus | Device for bridging movement joints |
EP0101284A3 (en) * | 1982-08-09 | 1984-05-09 | Leigh Flexible Structures Limited | Assembly for preventing ingress |
CA2015289C (en) * | 1990-04-24 | 1995-02-14 | Konrad Baerveldt | Extruded thermoplastic elastomer expansion joint |
-
2006
- 2006-05-03 CN CNA2006800544447A patent/CN101432486A/en active Pending
- 2006-05-03 WO PCT/IT2006/000306 patent/WO2007125556A1/en active Application Filing
- 2006-05-03 EP EP06745318A patent/EP2013419B1/en not_active Not-in-force
Non-Patent Citations (1)
Title |
---|
See references of WO2007125556A1 * |
Also Published As
Publication number | Publication date |
---|---|
CN101432486A (en) | 2009-05-13 |
EP2013419B1 (en) | 2012-07-04 |
WO2007125556A1 (en) | 2007-11-08 |
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