AU594595B2 - Expansion joint for roads and bridges - Google Patents
Expansion joint for roads and bridges Download PDFInfo
- Publication number
- AU594595B2 AU594595B2 AU26849/88A AU2684988A AU594595B2 AU 594595 B2 AU594595 B2 AU 594595B2 AU 26849/88 A AU26849/88 A AU 26849/88A AU 2684988 A AU2684988 A AU 2684988A AU 594595 B2 AU594595 B2 AU 594595B2
- Authority
- AU
- Australia
- Prior art keywords
- expansion joint
- roads
- bridges
- subgrades
- composite material
- 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.)
- Ceased
Links
- 239000002131 composite material Substances 0.000 claims description 25
- 229920002857 polybutadiene Polymers 0.000 claims description 6
- 239000005060 rubber Substances 0.000 claims description 3
- 229920001971 elastomer Polymers 0.000 claims description 2
- 239000005062 Polybutadiene Substances 0.000 claims 1
- 239000011230 binding agent Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000013536 elastomeric material Substances 0.000 description 2
- 229920002379 silicone rubber Polymers 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000001145 finger joint Anatomy 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
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
- 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
- E01C11/10—Packing of plastic or elastic materials, e.g. wood, resin
-
- 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
- E01D19/067—Flat continuous joints cast in situ
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
- Bridges Or Land Bridges (AREA)
Description
r AUT 5945 9 PATENTS ACT 1952 COMPLETE SPECIFICATION
(ORIGINAL)
FOR OFFICE USE Application Number: Lodged: Complete Specification Lodged: Accepted: Published: SPriority: Related Art: TO BE COMPLETED BY APPLICANT Name of Applicant: i Address of Applicant: 'Actual Inventors: Address for Service: SHO-BOND CONSTRUCTION CO.,
LIMITED
3-23 ICHIGAYAHONMURACHO, SHINJUKU-KU, TOKYO, JAPAN Naotake ANDO Taizo MATSUKAMI Hiroshi SAITO ARTHUR S. CAVE CO.
Patent Trade Mark Attorneys Level Barrack Street SYDNEY N.S.W. 2000
AUSTRALIA
Complete Specification for the invention entitled EXPANSION JOINT FOR ROADS AND BRIDGES.
The following statement is a full description of this invention including the best method of performing it known to me:- 1 ASC 49 tPRINT OF RECEIPT '002 4 0 14 1 2 C1
'F~
1
I
P la i;3 r EXPANSION JOINT FOR ROADS AND BRIDGES BACKGROUND OF THE INVENTION Field of the Invention: *one 0 0o 0 0 oA on o 0 0 0 O oa 0 0 0 0 0 0 a *0 tC The present invention relates to an expansion joint for roads or elevated roads and bridget, spanning rivers, valleys and the like, and more particularly to a seamless expansion joint for use in joining two adjacent spaced apart side sections of roads and bridges.
Description of the Prior Art: 10 As is typified by a finger joint, in a conventional expansion joint, in order tf/ permit one of two 4 adjacent spaced apart side sections of the road and bridge to horizontally move toward and away from the other, an open gap is provided between the two adjacent spaced apart side sections of the road and bridge, the open gap being generally spanned by a sealing-rubber member which is not flush with a track surface of the road and bridge to form an uncontinuous track surface which impairs smooth ridability for vehicles traveling the road and 20 bridge. In addition, a considerably noise is produced when the vehicle passes through such uncontinuous track surface of the road and bridge. These are problems inherent in the conventional expansion joint.
In recent years, in order to resolve the above problems, there is provided a conventional seamless expan- WEb r
I
ii .La 1 sion joint, for examp e such as one disclosed in Japanese Patent Laid-Open No. 61-191703, which joint is characterized in that: an expansion joint gap formed between two adjacent spaced apart side sections of the road and bridge is spanned by a cover member disposed in a position horizontally corresponding to a pavement layer of the road and bridge; and the thus installed cover member is over- SV laid with a visco-elastic composite material layer comc' posed of binders and aggregates, so that the top surface C t10 of the visco-elastic composite material layer is flush with the track surface of the road and bridge, k As is clear from its name, such seamless expansion joint provided with the visco-elastic composite material
CC
S layer filling the expansion joint gap provides a continur 5 ous track surface flush with the top surface of the road and bridge. Consequently, the seamless expansion joint can provide smooth ridability for vehicles. In addition, since there is no gap in the seamless expansion joint, noise is substantially not produced when the vehicles pass through the seamless expansion joint.
However, such conventional seamless expansion joint suffers from its limited amount of expansion. In such seamless expansion joint, since the visco-elastic composite material layer is adhesively secured to two adjacent spaced apart side sections of pavement layers -2- 2 '1.
1 overlaid upon subgrades of the road and bridge and particularly secured to upper surfaces of the subgrades, local concentrations of stresses will occur between the subgrades ald the visco-elastic composite material layer in case that the visco-elastic composite material layer is limited in amount of expansion to make it impossible to expand in response to the movement of the subgrades.
As a result of such local concentrations of the stresses, cracks are produced in the visco-elastic composite material layer.
On the other hand, a visco-elastic composite material layer with a sufficient amount of expansion is poor in rigidity in use to make it difficult to provide a continuous surface flush with the track surface of the road. These are problems inherent in the conventional seamless expansion joint of the roads and bridges.
SUMMARY OF THE INVENTION It is an object of the present invention to resolve the above problems inherent in the conventional expansion joints by providing a novel seamless expansion joint sufficiently expandable in response to the expansion of subgrades of the roads and bridges.
In the expansion joint of the present invention for the roads and bridges, since a visco-elastic composite material layer filling an expansion joint gap of the I Ir 5 C
C
(c' Cf
C
'1 -3 p090 9 00a 9o 0 9999 a 9 o* 09 09 0 00 *i 99 0 000* 99 0r 9 0 1 expansion joint is insulated from subgrades of the roais end bridges through an elastomeric layer excellent in deformability, it is possible to permit the composite material layer to deform on the upper surfaces of the subgrades of the roads and bridges. In addition, since the visco-elastic composite material layer is secured only to two adjacent spaced apart side sections of pavement layers overlaid upon the subgrades of the roads and brides, it is possible to permit the two adjacent .0 spaced apart side sections of the pavement layers to move in response to the movement of the subgrades of the roads and bridges as a whole, whereby a large amount of expansion is allowed in the seamless expansion joint of the present invention.
According to the present invention, there is provided: In an expansion joint for roads and bridges, comprising: a cover member spanning an expansion joint gap defined between two adjacent spaced apart side sec- '0 tions of pavement layers overlaid upon subgrades of the roads and bridges; and a v',sco-elastic composite material layer so filled in the expansion joint gap on the cover member as to be flush with the track surface of the roads and bridges; the improvement wherein: an elastomeric layer excellent in deformability 0 0*
I
I zt *t I 01
I
r r 11
A
K
-qq 1 is overlaid upon upper surfaces of the subgrades and an upper surface of the cover member, while overlaid with the visco-elastic composite material layer.
The elastomeric layer is preferably made of polybutadiene rubbers or silicone rubbers.
BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a longitudinal sectional view of the expansion joint of the present invention for the road and bridges.
oo..
o a toP 5* ow a sq a ph r t tc 10 DESCRIPTION OF THE PREFERRED EMBODIMENT Now, an embodiment of the present invention will be hereinbelow described in detail with reference to the drawings. It is clear that the present invention is not limited only to this embodiment.
15 In the drawings: the reference numeral 1 denotes a subgrade; 2 a pavement layer; 3 a cover member; 4 a elastomeric layer; and 5 a visco-elastic composite material layer.
An expansion joint gap 6 is formed between two adjacent spaced apart side sections of the pavement layers 2 overlaid upon the subgrades 1 of the roads and bridges.
If necessary, a joint-sealing material 7 is filled in the expansion joint gap 6 as shown in Fig. 1.
The cover member 3 is constructed of, for example such as an aluminum plate and the like. By means of the i fi 5 S) A
I.
o a C CC C P0*0
CCC
a aa 4*B *s <C as a C I 1 cover member 3 spanning the expansion joint gap 6 between two adjacent spaced apart side sections of the subgrades 1 of the roads and bridges, materials of the visco-elastic composite material layer 5 and the elastomeric layer 4 are prevented from falling in the expansion joint gap 6.
The elastomeric layer 4 is made of polymers such as polybutadiene rubbers and silicone rubbers excellent in expandability so as to have an expansion rate of, 10 for example, about 200 The material of the elastomeric layer 4 is poured into the expansion joint gap 6 on the cover member 3 so as to form a continuous elastomeric layer 4 having a thickness of from about 2 to about mm on the cover member 3. In this embodiment of the pre- 15 sent invention, the elastomeric layer 4 is made of S polybutadiene rubbers since the polybutadiene rubbers are excellent in expandability and are small in temperature sensitivity while good in adhesive properties to concrete slabs, stone materials, metallic materials and the like. In addition, the polybutadiene rubbers are excellent in durability and heat-resisting properties so as to not produce any foam even when they are brought into contact with heated aggregates or the binders.
On the other hand, the visco-elastic composite material layer 5 is composed of a composite material ct a It
CI
a C t j e i /a
I
-6- L~ P I4 -1>iT'~ Cr Cr W t 2 6 I ,t I tl A
II
1 prepared from a suitable aggregates such as ceramic materials and the like mixed with a binder which is a composite material or mixture of a rubber-elastomeric material and a liquid-binder material.
Any of the aggregates and primers 8 may be made of conventional materials while installed in a conventional manner.
The expansion joint of the present invention for the roads and bridges can be installed in a conven- 10 tional manner, as follows: First, the pavement layer overlaid upon the subgrades of the roads and bridges is removed in the expansion joint area to expose the two adjacent spaced apart side sections of the subgrades. Between these 15 subgrades is formed the expansion joint gap in which is installed the joint-sealing means covered with the cover member spanning the expansion joint gap. The primer is applied Vo each of the two adjacent spaced apart side sections of the pavement layers overlaid upon the subgrades of the roads and bridges. After that, the elastomeric material of the elastomeric layer is poured into the expansion joint gap defined between the two adjacent spaced apart side sections of the pavement layers on the cover member and the top surfaces of the subgrades.
Then, cleaned aggregates are filled in the expansion t t 4 -1 t tV.
t CC 4 7i A1 1 join' gap on the thus poured elastomeric layer, and the binders follows the aggregates to form the visco-elastic composite material layer the top surface of which is so pressed and finished by means of a roller means and the like as to be flush with the track surface of the pavement layer of the roads and the bridges.
As described above, the seamless expansion joint e o of the present invention is formed as a whole.
The seamless expansion joint of the present inven- 10 tion has the follow ing effects: S9 In the seamless expansion joint of the present invention: The elastomeric layer excellent in deformability, which is interposed between the visco-elastic composite o 4layer and the subgrades of the loads and bridges, makes 15 the expansions of the subgrades possible; Since the visco-elastic composite material layer is insulated from the subgrades through the elastomeric layer while adhesively secured to the two adjacent spaced apart side sections of the pavement layers overlaid upon the subgrades, a sufficient expansions of the subgrades are permitted by the entire length of the visco-elastic composite material layer; Since the visco-elastic composite material layer is insulated from the subgrades of the roads and bridges through the elastomeric layer excellent in deformability, 8- II
I
1 local concentrations of stresses are prevented from occurring in the expansion joint so that the pavement layer is prevented from cracking in its entire track surface; and Since the expansion joint of the present invention is a seamless type joint, it is possible to keep smooth ridability of the vehicles traveling thereon and to reduce a level of noise produced by the vehicle traveling thereon.
4-4I 4r 4 44*9
IL(
4l 4 4i ~t 4 I i r -9i r
YU
i i: i l
Claims (4)
1. In an expansion joint for roads and bridges, comprising: a cover member spanning an expansion joint gap defined between two adjacent spaced apart side sec- tions of pavement layers overlaid upon subgrades of the roads and bridges; and a visco-elastic composite material layer so filled in said expansion joint gap on said cover member as to flush with the track surface of the roads rac and; bridges; the improvement wherein: o o' £.oi is overlaid upon upper surfaces of said subgrades and, 1116 an upper surface of said cover member, while overlaid with said visco-elastic composite material layer.
2. The expansion jr"nt as set forth in claim 1, tg t ~E wherein: sai4 elatomeric layer is made of polybutadiene§ rubbers.
3. The expansion joint as set forth in claim 1, wherein said elastmeric layer is made of silicOae rub- bers. I
4. An expansion joint for roads and bridges, I substantially as herein described with reference to the crawing. DATED this; 5th day of Decenber, 1988. SHO-BOND CONSTRUCTION CO., LIMITED B~y Its Patent Attorneys RTI-UR S. CAVE Co. I 10
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988062290U JPH01167406U (en) | 1988-05-12 | 1988-05-12 | |
| JP63-62290U | 1988-05-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU2684988A AU2684988A (en) | 1989-11-23 |
| AU594595B2 true AU594595B2 (en) | 1990-03-08 |
Family
ID=13195841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU26849/88A Ceased AU594595B2 (en) | 1988-05-12 | 1988-12-14 | Expansion joint for roads and bridges |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPH01167406U (en) |
| AU (1) | AU594595B2 (en) |
| GB (1) | GB2218437B (en) |
| MY (1) | MY103397A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU631707B2 (en) * | 1990-06-01 | 1992-12-03 | Sho-Bond Corporation | Expansion joint for bridge structure |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1238595B (en) * | 1990-02-27 | 1993-08-18 | Italgiunti Srl | EXPANSION JOINT BETWEEN TWO CONTIGUOUS ELEMENTS OF A ROAD FOR VEHICLES. |
| NL9100524A (en) * | 1991-03-25 | 1992-10-16 | Hollandsche Betongroep Nv | METHOD FOR CLOSING THE JOINT BETWEEN TWO MOVABLE PATHS ON AN ASPHALT ROAD SURFACE, IN PARTICULAR THE JOINT BETWEEN TWO BRIDGE PARTS OR BETWEEN A BRIDGE PART AND A MAIN PART. |
| NL2001419C2 (en) * | 2008-03-28 | 2009-09-29 | Rasenberg Wegenbouw B V | Forming expansion joint cover for e.g. bridges or viaducts, by laying two elastic layers having different elasticity |
| JP2014080853A (en) * | 2012-09-26 | 2014-05-08 | Allen:Kk | Construction method of resin pavement body in road joint part, and road joint part structure comprised of resin pavement body |
| CN105040582B (en) * | 2015-07-20 | 2017-01-04 | 浙江工业大学 | Bridge expansion joint structure |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU454059B2 (en) * | 1970-07-01 | 1974-10-03 | Thegeneral Tire & Rubber Company | Expansion joint |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3503311A (en) * | 1968-09-26 | 1970-03-31 | Phillips Petroleum Co | Joint and crack seal and method for sealing joints and cracks |
| GB1350903A (en) * | 1970-05-08 | 1974-04-24 | British Railways Board | Joints between structural members of bridges |
| US3838931A (en) * | 1972-05-29 | 1974-10-01 | A Valla | Elastic road bridge joint |
| US4111582A (en) * | 1976-03-19 | 1978-09-05 | Samuel Tippett | Expansion joint |
| JPS57112503A (en) * | 1980-12-29 | 1982-07-13 | Eiichi Tamebuchi | Extensible joint structure of road |
| GB2143264B (en) * | 1983-07-14 | 1986-05-14 | Evans & Company Limited H R | Road joint system |
-
1988
- 1988-05-12 JP JP1988062290U patent/JPH01167406U/ja active Pending
- 1988-09-20 MY MYPI88001050A patent/MY103397A/en unknown
- 1988-12-14 AU AU26849/88A patent/AU594595B2/en not_active Ceased
-
1989
- 1989-01-05 GB GB8900173A patent/GB2218437B/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU454059B2 (en) * | 1970-07-01 | 1974-10-03 | Thegeneral Tire & Rubber Company | Expansion joint |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU631707B2 (en) * | 1990-06-01 | 1992-12-03 | Sho-Bond Corporation | Expansion joint for bridge structure |
Also Published As
| Publication number | Publication date |
|---|---|
| MY103397A (en) | 1993-06-30 |
| JPH01167406U (en) | 1989-11-24 |
| GB8900173D0 (en) | 1989-03-01 |
| GB2218437A (en) | 1989-11-15 |
| GB2218437B (en) | 1992-04-08 |
| AU2684988A (en) | 1989-11-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MK14 | Patent ceased section 143(a) (annual fees not paid) or expired |