1. PRODUCT OVERVIEW
VHF finger expansion joint made by Vinh Hung Investment and Production Co., Ltd (VinhHung IP), includes 2 types: Cantilever VHF-C and over-gap
VHF-O, according to:
AASHTO LRFD standards
ASTM D354292 (2003) standards VHFC and VHFO are integrally manufactured with high accuracy finger plates and accessories such as bolts, rubber sheet/water prevention steel
plates which help facilitate new construction and installation as well as inspection and maintenance works in service.
VHFC and VHFO accommodate to medium movement to big movement and can be used for both straight and skew bridges.
2. PRODUCT CHARACTERISTICS
Totally accommodate to medium and large
longitudinal movements, and also vertical and
transversal movement if any.
Simple installation, maintenance and
replacement, which allows to replace individual
finger plates in short period of time and for each
lane.
High loading resistance capacity, especially the
moving load.
Also available for skew bridges.
Rubber seal system is designed to be totally
water-tight and prevent dust and debris.
Can be designed to be compatible with different
thicknesses of bridge decks.
To ensure the long-lasting durability, VHF finger
expansion joints are protected from corrosion with
methods such as: 2-component epoxy coating, PUbased painting (Polyurethane), hot dip galvanization
according to ASTM A123 standards and especially
the Al Mg spraying method (at the ratio of 5% Al and
95% Mg) which ensures anti-corrosion durability of
up to 100 years, proven by salt-spraying test in 6000
hours (8-hour dry-wet cycle repetition) under ASTM
B117 standards.
DIMENSIONS OF FINGER EXPANSION JOINT VHF-C15 ~ VHF-C30 (WITHOUT BOLT)
MODEL DISPLACEMENT d
A D
C H
min max min max
VHF-C15 15 22 190 205 25 40 300 150
VHF-C20 20 22 230 250 30 50 300 150
VHF-C30 30 25 245 275 30 60 300 150
1. PRODUCT OVERVIEW
VHM joint made by VinhHung Investment and
Production Co., Ltd (VinhHung IP) are composed of
multiple steel rails in combination with supporting
beams and special structural accessories.
VHM - modular expansion joint accomodates to
longitudinal movement from 160mm and above.
The expansion joints are connected to the bridge
deck through the anchoring reinforced system.
Rubber seal serves as drainage trough and protect
the system from dust and debris.
2. PRODUCT CHARACTERISTICS
: Design and manufacture according to AASHTOLRFD, TCVN 11823 â?? 2017 standards.
: Allow longitudinal movement of up to 720mm,
vertical and horizontal movements are in
accordance with AASHTO standards.
: Be able to withstand high load with stable
and durable structure.
: Ensure level and smooth surface for traffic.
: Each center beam is fixed with an independent
supporting bar, which satisfies the requirement of
the fatigue limit C (AASHTO 2007).
: Protected with high anti-corrosive coating layer
and treated with anti-slip coating technology.
: Totally watertight.
3. TECHNICAL PARAMETERS.
MODEL DISPLACEMENT
MM
A C
MM
D H
MM MM MM
MIN MAX MIN MAX
VHM - 160 160 160 320 360 40 200 350
VHM - 240 240 240 480 420 40 280 350
VHM - 320 320 320 640 500 50 370 350
VHM - 400 400 400 800 580 50 450 350
VHM - 480 480 480 960 640 60 540 350
VHM - 560 560 560 1120 700 60 620 350
VHM - 640 640 640 1280 800 60 700 350
VHM - 720 720 720 1440 880 60 780 350
4. PROPERTIES OF SEAL
A. BEARING AND SPRING
NO. ITEMS UNIT REQUIREMENT STANDARD
1 Hardness Point 60 �± 5 ASTM D2240
2 Tensile strength, min Mpa 15.5 ASTM D412
3 Elongation at break, min % 350 ASTM D412
4 Deformation in Ozone, (content of Ozone in the
air: 100pphm, 20%. Deformation at 38�°C x 70h No crack ASTM D1149
5 Heat resistance
(100�°C x 70h)
Change of hardness,
max
Point 0~15
ASTM D573 Change of tensile
strength, max % -15
Change of elongation,
max
% -40
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