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GB2497165A - A mechanical movement joint system - Google Patents

A mechanical movement joint system Download PDF

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Publication number
GB2497165A
GB2497165A GB1218861.1A GB201218861A GB2497165A GB 2497165 A GB2497165 A GB 2497165A GB 201218861 A GB201218861 A GB 201218861A GB 2497165 A GB2497165 A GB 2497165A
Authority
GB
United Kingdom
Prior art keywords
text
flexible member
resiliently flexible
mechanical
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
Application number
GB1218861.1A
Other versions
GB201218861D0 (en
GB2497165B (en
Inventor
Wing Kai Yau
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.)
MASTER PROOFER CORP Ltd
Original Assignee
MASTER PROOFER CORP Ltd
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 MASTER PROOFER CORP Ltd filed Critical MASTER PROOFER CORP Ltd
Publication of GB201218861D0 publication Critical patent/GB201218861D0/en
Publication of GB2497165A publication Critical patent/GB2497165A/en
Application granted granted Critical
Publication of GB2497165B publication Critical patent/GB2497165B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00Structural or constructional details of bridges
    • E01D19/06Arrangement, construction or bridging of expansion joints
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62Insulation or other protection; Elements or use of specified material therefor
    • E04B1/66Sealings
    • E04B1/68Sealings of joints, e.g. expansion joints
    • E04B1/6813Compressable seals of hollow form
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62Insulation or other protection; Elements or use of specified material therefor
    • E04B1/66Sealings
    • E04B1/68Sealings of joints, e.g. expansion joints
    • E04B1/6803Joint covers

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Bridges Or Land Bridges (AREA)
  • Road Paving Structures (AREA)

Abstract

A mechanical joint system for an expansion joint comprises an elongate rigid tubular member, a resiliently flexible member having a tubular void at an upper top central position for receiving the tubular member therethrough, and at least one mechanical connector operatively connected to the rod and oriented transversely to the longitudinal axis of the resiliently flexible member. The resiliently flexible member is expanded such that the lateral sides of the resiliently flexible member make surface contact with corresponding sides surfaces of adjacent joints using an adhesive and the at least one mechanical connector rests on a top surface of the adjacent joints. The flexible member may be expanded by inflation.

Description

A Mechanical Movement Joint System
Technical Field
The invention concerns a mechanical movement joint system.
Background of the Invention
Traditional mechanical movement joint systems have had high failure rates due to varying environmental conditions that cause significant expansion, contraction, UV aging and weather corrosion of materials used in these mechanical joint systems. Failures can lead to catastrophic consequences such as mechanical joints falling down while people or vehicles pass underneath a bridge, double track viaduct or elevated rail line.
Once traditional mechanical movement joints are installed and used for daily operation, it is extremely difficult to replace due to restriction of site conditions when other structural material has been installed to prevent accessibility to the joint location for new installations.
Summary of the Invention
In a first preferred aspect, there is provided a mechanical joint system for an expansion joint, comprising: an elongate rigid tubular member; a resiliently flexible member having a tubular void at an upper top central position for receiving the tubular member therethrough; and at least one mechanical connector operatively connected to the rod and oriented transversely to the longitudinal axis of the resiliently flexible member; wherein the resiliently flexible member is expanded such that the lateral sides of the resiliently flexible member make surface contact with corresponding sides surfaces of adjacent joints using an adhesive and the at least one mechanical connector rests on a top surface of the adjacent joints.
The resiliently flexible member may be made from ethylene propylene diene monomer (EPDM).
The tubular member may be made from a metal alloy.
The at least one mechanical connector may be made from stainless steel The tubular member and mechanical connector may be operatively connected to each other via screw engagement.
The lateral sides of the EPOM member may be adhered to the corresponding side surface of the adjacent joints using M5 polymer adhesive.
There may be two or three mechanical connectors spaced apart from each other, and operatively connected to the tubular member.
The mechanical connector may be in a form according to any one from the group consisting of: strip, plate, plate with additional finish including texture, pattern, anti-slipping grits for load bearing or decorative purpose.
The system further comprising at least one air nozzle defined in the resiliently flexible member for air inflation of the resiliently flexible member to a predetermined shape and size Air inflation may occur when the resiliently flexible member is inserted into a predetermined location.
Brief Description of the Drawings
An example of the invention will now be described with reference to the accompanying drawings, in which: Figure 1 is a perspective view of a mechanical joint system in accordance with an embodiment of the present invention; Figure 2 is a front view of a mechanical joint system in accordance with an embodiment of the present invention; Figure 3 is a perspective view of a longer version of mechanical joint system in accordance with an embodiment of the present invention; Figure 4 is a perspective exploded view of a mechanical joint system in accordance with an embodiment of the present invention; Figure 5 is a front view of a mechanical joint system in accordance with an embodiment of the present invention; Figure 6 is a perspective view of a mechanical joint system in accordance with an embodiment of the present invention; Figure 7 is a top view of a mechanical joint system in accordance with an embodiment of the present invention; Figure 8 is a front exploded view of a mechanical joint system in accordance with an embodiment of the present invention; Figure 9 is a side exploded view of a mechanical joint system in accordance with an embodiment of the present invention; Figure 10 is a perspective view of a longer version of mechanical joint system in accordance with an embodiment of the present invention; Figure 11 is a perspective view of a longer version of mechanical joint system in accordance with an embodiment of the present invention; Figure 12 is a cross-sectional side view of a mechanical joint system installed between adjacent joints in accordance with a preferred embodiment of the present invention; Figure 13 shows various EFDM members for use with the mechanical joint system; Figure 14 shows steps of the installation procedure of the mechanical joint system; and Figure 15 shows a perspective frontal view of a load bearing cover of a mechanical joint system in accordance with an embodiment of the present invention.
Detailed Description of the Drawings
Referring to the drawings, Joint Framer A981 is a mechanical joint system 10 that is inserted between adjacent joints 50 of a bridge, double track viaduct or elevated rail line.
The mechanical joint system 10 comprises a metal alloy backbone 20 for insertion into a circumferentially enclosed cavity or air nozzle 31 of an ethylene propylene diene monomer (EPDM) member 30. Preferably, the metal alloy backbone 20 is in the form of a rod made from a metal alloy which is inserted along the longitudinal axis of the EPDM member 30 in the centre near its top side. The rod 20 and EPDM member 30 are load bearing, fire retarding, have water tightness, excellent impact and abrasion resistance, and is user and environmentally friendly. A hangar/mechanical connector 40 is oriented transverse to the longitudinal axis of the EPDM member 30. In this embodiment, the form of the mechanical connector 40 is a rotor cover for the purpose of a bridge to mount onto the edges of track joints. The connector 40 is secured to the rod 20 that is inserted in the cavity 31 of the EPDM member 30 using a screw 41. The alloy backbone design of the joint, anchorage of Joint Framer A981 10 to the track deck uses a bolt-free adhesive 60 and self-hanging mechanism without the need to use additional metal nosing and cement works. The mechanical joint system 10 greatly shortens time and allows flexibility to carry out new and renovation works by phases to match with actual site conditions. Based on tailor-made components/accessories, Joint Framer A981 10 is flexible to be adapted in numerous different configurations which is designed to fulfil the design requirement of UK Highway Bridge Joint regulation BD33194 whilst being used to determine the accumulative range of movement imposed by BS5400 Part 2 and residual creep and shrinkage and its relationship by BS5400 Part 4 and 5.
For a load bearing mechanical connector 40, it is constructed in form of load bearing cover 90 depending on the loading requirement of its usage, for example, highway, ramp, car park or foot traffic on a foot bridge, shopping mall, etc However, for highway subject to car and truck traffic, the mechanical connector is not for mounting on road but also subject to traffic loading, Replaceable EPDM Mechanical Movement! Solids with Alloy Backbone The ethylene propylene diene monomer (EPDM) solid member 30 resiliently flexible Is member is manufactured to withstand extreme weather conditions from _4000 to +120°C, liquid corrosion, heat and UV aging which allow more than 15 years of service life. Joint size range is from 18mm to 180mm and alternatives at kerb-line or into parapet recess or at change on plan of the bridge. The EPDM member 30 expands and contracts as the adjacent joints expand and contract due to environmental conditions. Therefore a good seal is provided between the adjacent joints because ot the EPDM member 30 to prevent items from falling between the adjacent joints.
The EPDM member 30 has a ribbed portion 32 on each lateral side. The top side of the EPDM member 30 has a zig-zag cross-section 33. Extending from the top side of the EPDM member 30 are two inner walls 34 that extend towards the centre of the EPDM member 30. At the bottom central position in the EPDM member 30, a lower cavity 36 is formed when the two inner walls 34 meet with a centre portion of the bottom side of the EPDM member 30 that has a W-shaped cross-section 37. These shapes and formations of the EPDM member 30 enable the EPDM member 30 to expand and contract easily and repeatedly for a long period of time. The ribbed portion 32 enables a strong adhesive bond between the mechanical joint system 10 and adjacent joints since the voids provide a greater surface area for the adhesive 60 to bond with the mechanical joint system 10.
The circumferentially enclosed cavity 31 of the EPDM member 30 is located in the centre position on the EPDM member 30. The cavity 31 is sized such that there is a close fit with the rod 20 that is inserted within it and some deformation of the EPDM member 30 in this area is expected to ensure that there is some frictional resistance between the EPDM member 30 and the rod 20 to minimize relative movement after insertion. The EPDM member 30 is resiliently deformable.
Replaceable, bendable, self-hanging, protective covering accessories Depending on site conditions and finishing requirement, a pre-cast backbone 20 with screw ports 21 is able to install with a stainless heavy duty traffic cover 40, stainless steel rotor-hanger, carborundum strip, or air injection cap etc. A screw 41 secures the cover 40 to the rod 20 via the screw port 21. A wing nut washer 43 turned on the screw thread of the screw 41 for tightening the cover 40 to the rod 20. The cover 40 is rectangular and planar. The distal end portions 42 of the cover 40 are angled down and the distal end portions 42 is the part of the cover 40 which rests on the top surface of the adjacent joints.
High Performance MS Polymer Adhesive Labond Superbond S535e modified silicone adhesive 60 offers direct permanent bonding Is between the EDPM solid member 30 and the adjacent joints 50. The adjacent joints may be made of concrete, steel, aluminium and most of the polymeric rubber or plastic. The adhesive 60 could also serve as a connecting and resealing material of the EDPM solid member 30 without affecting the movement capacity of EDPM solid member 30.
One type of EPDM member 30 has a joint width range of 18-45mm. Another type of EPDM member3O has ajointwidth range of46 -100mm.
The EPDM member 30 has the following characteristics: Hardness scale is 75 Anti-Corrosion resistance to salt spray Expansion and contraction cycle over 10 years: 7,300 cycles, no adhesive or cohesive failure, cracks or deformed Adhesion and tension modulus (100% extension after heat aging): S535e: EDPM Extension force: 184 N Area of failure: none S535e: Cement mortar Extension force: 196N Area of failure. None Fire retarding is class 1.
Steps of Application for resealing work for the rail track (for new work, start from step 2): 1. Removal of existing seal and surface preparation -Clean up existing accumulated rubbish, debris, sand, sitting water etc. from both sides of the joint.
-Carefully cut the adhesive at both sides of the existing expansion Joint seal with hand held knife including removing old E.J. seal from its position at a suitable interval until the old material is removed.
-Remove remaining adhesive and clean the E.J. surface with a hand held electrical cutter and brush to be free from dirt and dust.
-Clean the prepared E.J. surface with degreasing agent to be free from oil.
2. Preparation before Installation -Verify the existing Joint size and select the suitable model of A981 seal according to section guide table.
-Install stainless steel screw tubes of the holder into position.
-Cut the prepared EDPM Solid seal to a suitable length according to site measurement.
3. Installation -Apply a thin layer (approx. 1mm thick) to both sides of E.J. (remove over applied sealer by masking tape method) clean over applied sealant.
-Apply sealant properly to the wing of A981 seal (remove over applied sealant by masking tape method).
-Carefully insert the prepared A981 EDPM solid into the Joint from one end to another (May use some holder for temporary positioning).
-Make good Labond Superbond S535e by removing any excess adhesive or compensating off hole area by additional adhesive.
-Install stainless steel hanger or rotor 40 onto position (approx. 500mm interval subject to site condition).
-Finally clean and remove all waste and surplus material.
An enhanced installation procedure for an integrated-fit installation against uneven joint width is provided. A temporary compressed air mechanism can be provided for works where an intensively fit installation is required. The procedure is as follows:- -Install a ready-made cape end (with air nozzle) at both ends of the EDPM Solid seal installed as described above.
-Pump air into the cavity of whole installed EDPM Solid seal by using hand held air pump. Allow the EDPM Solid seal to expand until tightly fit to both sides of the Joint.
-Shut the nozzle and maintain the air tight status for three days until the sealant of the EDPM Solid seal is fully cured.
-Discharge the compressed air by releasing the nozzle to an open position.
-Remain the cap end as permanent part of the system which could allow for future maintenance use.
Product Name Joint Framer A981 Function of Mechanical Movement Joint Product For installation at the gap of all types of structural movement joint of Building structure, bridge, highway etc Material Functional Part Components st EDPM Rubber with designed shape and constructed with *a ring -Central axis not affecting at the central axis of the EDPM movement range of joint Rubber for inserting *a Aluminum -Facilitating embarking alloy rod which is pre-casted with function screw port 21 for other mechanical -shape retaining accessories to embark onto the EDPM rubber and at same time to serve as a *frame skeleton to hold the bending shape of EDPM rubber for tackling the profile of movement joints shape.
Unique Accessories Fart Air Iniection nozzles Allow Air Compressing or Vacuuming the EDPM -Control the width of rubber joint Strip EDPM Rubber during installation Stainless steel Rotor embarked onto alloy rod Allow the joint to hold in fixed -Self-Hanging system for position without risk to drop joint without need to down screw on adjacent structure The mechanical joint system 10 addresses the problem of structural movement under general train traffic conditions. The mechanical joint system 10 is water tight and has weather resistance to have a minimum durability of ten years. The mechanical joint system 10 is positioned beneath the track lines and signal system, and typically direct access to this position is difficult. Shape and joint alignment are irregular and vary from location to location along the track. A self-hanging claw 40 is mounted onto the bridge deck to provide additional securement and prevent the mechanical joint system 10 from falling down due to failure of the adhesive 60 in the mechanical joint system 10. The rotor of the backbone design of the mechanical joint system 10 shows the self-hanging claw 40.
The rotor claws 40 are installed onto the stainless steel screw port 21 in the backbone 20 passing through the cavity 30 of the EDPM joint rubber 30. Even if there was a loose adhesive bonding of the mechanical joint system 10 with the sides of the joints in the track deck, the rotor claws 40 of the backbone that mount onto the top surface track deck are Is still tightly held in position before remedial work can be carried out during routine track examination to re-apply the adhesive.
There are two types of mechanical joint system 10 to handle a joint average width of greater than 85mm and less than 85mm. For the mechanical joint system 80 handling a joint average width greater than 85mm, the range of movement from the compressed state is 35mm and the fully extended state is 135mm. For the mechanical joint system 90 handling a joint average width less than 85mm, the range of movement from the compressed state is 25mm and the fully extended state is 125mm.
It will be appreciated by persons skilled in the art that numerous variations and/or modifications may be made to the invention as shown in the specific embodiments without departing from the scope or spirit of the invention as broadly described. The present embodiments are, therefore, to be considered in all respects illustrative and not restrictive.

Claims (1)

  1. <claim-text>CLAIMS1. A mechanical joint system for an expansion joint, comprising: an elongate rigid tubular member; a resiliently flexible member having a tubular void at an upper top central position for receiving the tubular member therethrough; and at least one mechanical connector operatively connected to the rod and oriented transversely to the longitudinal axis of the resiliently flexible member; wherein the resiliently flexible member is expanded such that the lateral sides of the resiliently flexible member make surface contact with corresponding sides surfaces of adjacent joints using an adhesive and the at least one mechanical connector rests on a top surface of the adjacent joints.</claim-text> <claim-text>2. The system according to claim 1, wherein the resiliently flexible member is made Is from ethylene propylene diene monomer (EPDM).</claim-text> <claim-text>3. The system according to claim 2, wherein the lateral sides of the EPDM member is adhered to the corresponding side surface of the adjacent joints using MS polymer adhesive.</claim-text> <claim-text>4. The system according to any preceding claim, wherein the tubular member is made from a metal alloy.</claim-text> <claim-text>5. The system according to any preceding claim, wherein the at least one mechanical connector is made from stainless steel.</claim-text> <claim-text>6. The system according to any preceding claim, wherein the tubular member and mechanical connector are operatively connected to each other via screw engagement.</claim-text> <claim-text>7. The system according to any preceding claim, wherein there are two or three mechanical connectors spaced apart from each other, and operatively connected to the tubular member.</claim-text> <claim-text>8. The system according to any preceding claim, wherein the mechanical connector is in a form according to any one from the group consisting of strip, plate, plate with additional finish including texture, pattern, anti-slipping grits for load bearing or decorative purpose.</claim-text> <claim-text>9. The system according to any preceding claim, further comprising at least one air nozzle defined in the resiliently flexible member for air inflation of the resiliently flexible member to a predetermined shape and size 10. The system according to claim 9, wherein air inflation occurs when the resiliently flexible member is inserted into a predetermined location.11. A mechanical joint system for an expansion joint as described hereinbefore.12. A mechanical joint system for an expansion joint as described hereinbefore with reference to the accompanying drawings.</claim-text>
GB1218861.1A 2011-10-20 2012-10-19 A mechanical movement joint system Active GB2497165B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201110011343 2011-10-20

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GB2497165A true GB2497165A (en) 2013-06-05
GB2497165B GB2497165B (en) 2017-03-01

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018192935A1 (en) * 2017-04-18 2018-10-25 Roland Wolf Device for subsequent stabilisation of water-permeable joint cavity cracks in bridges, tunnels and buildings
WO2019046971A1 (en) * 2017-09-11 2019-03-14 Invent To Build Inc. Wet seal system
US20220034081A1 (en) * 2018-09-20 2022-02-03 Tremco Incorporated Gasket sealing arrangements

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2301646A1 (en) * 1975-02-18 1976-09-17 Courtois Andre Waterproof joint for building use - has elongate cover with projective envelope and inflatable membrane
JP2008095301A (en) * 2006-10-06 2008-04-24 Bridgestone Corp Bridge-girder cut-off means, and its manufacturing method
JP2008095302A (en) * 2006-10-06 2008-04-24 Bridgestone Corp Bridge-girder cut-off means and its manufacturing method
US20110135387A1 (en) * 2009-07-15 2011-06-09 Construction Research & Technology Gmbh Expansion joint sealing system
CN202298930U (en) * 2011-10-08 2012-07-04 朱泳菁 Building deformation joint

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2301646A1 (en) * 1975-02-18 1976-09-17 Courtois Andre Waterproof joint for building use - has elongate cover with projective envelope and inflatable membrane
JP2008095301A (en) * 2006-10-06 2008-04-24 Bridgestone Corp Bridge-girder cut-off means, and its manufacturing method
JP2008095302A (en) * 2006-10-06 2008-04-24 Bridgestone Corp Bridge-girder cut-off means and its manufacturing method
US20110135387A1 (en) * 2009-07-15 2011-06-09 Construction Research & Technology Gmbh Expansion joint sealing system
CN202298930U (en) * 2011-10-08 2012-07-04 朱泳菁 Building deformation joint

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018192935A1 (en) * 2017-04-18 2018-10-25 Roland Wolf Device for subsequent stabilisation of water-permeable joint cavity cracks in bridges, tunnels and buildings
WO2019046971A1 (en) * 2017-09-11 2019-03-14 Invent To Build Inc. Wet seal system
US20220034081A1 (en) * 2018-09-20 2022-02-03 Tremco Incorporated Gasket sealing arrangements

Also Published As

Publication number Publication date
GB201218861D0 (en) 2012-12-05
GB2497165B (en) 2017-03-01

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