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bridge expansion device:Many sizes of bridge expansion device, we can make it as your requirement.Sales Manager: Danny
Mobile Phone: 0086 15075828982
Tel: +86 3187091666
Fax: +86 3187952199
Website: www. /www. hsbaoli. cn
Companies: CHINA BAOLI GROUP
Address: No.396 Heping West Road, Hengshui City, Hebei Province, China.
Expansion Joints
Expansion joints have the demanding task of bridging the movement gaps in the carriage way and foot paths of a bridge structure. They
must be able to accommodate all the movements of the bridge without creating any constraint forces within the structure. Simultaneously,
expansion joints must be able to ensure the safety of traffic and they must maintain a continuous water tight connection along the bridge surface.
Expansion joints became an essential element of bridge construction when stone arch bridges were replaced by the beam design steel and concrete bridges. These modern bridge construction techniques led to large expansion and contraction movements and saw an increase in
demands from traffic volume, weight of vehicles and riding comfort.
To meet these demands, BAOLI offers high quality and proven solutions. Examples of its product range include the rubber expansion joint, the modular expansion joint, and the comb expansion joint.
In the beginning of 1995, through the close cooperation with the experts of highway planning designing institution of the Ministry of communications and BaoLi company, the first domestic large-scale and exclusive test-bed was invented. After one year’s industrious working and abreast breakthrough, we finally manufactured a bridge retractor device with Chinese unique technical feature, this “GQF-MZL, GQF-C” type bridge retractor device filled in gap for China. In December of the same year, the communication industry convened the appraisal meeting for this product; the experts gave a high appraisal to this product.. On 6th June, 1997, the Ministry of Communications convened the appraisal meeting for the “GQF-MZL, GQF” type bridge retractor device, the experts again gave the following high appraisal to this product: “ the product manufactured by HengShui BaoLi company owns innovative design, strong adaptability; it is the first case at home. The leading-edge technique, strict and reliable quality control procedure makes it available for volume production” Thus, this product pushed the gate for domestication of retractor device and ended the history of importing expensive bridge retractor device. In 1999, it was awarded the “Second Class Prize for Progress in Science and Technology” by the ministry of Communications.
Modular Expansion Joints
Modular Expansion Joint Systems have gained overwhelming worldwide acceptance for accommodating and sealing large joint movements on bridge structures. By incorporating the results of recent research activities, each joint system is designed to provide watertight, fatigue resistant, long-term, maintenance-free performance.
Description of Modular Expansion Joint for Bridge:
Modular Bridge Expansion Joint separates the structural elements above the basic, and sets apart appropriate gap between both sides in order to ensure the structural elements on both sides of Modular Bridge Expansion Joint free flexible in horizontal direction. The wide of sew is always 20-40mm. And then fill in thermal insulation materials.
a) Building height is low, and the structure is simple.
b) has performance of flexible stretch and safety.
c) has performance of easy installation for construction and low price.
Application of Modular Expansion Joint for Bridge:
Modular Bridge Expansion Joint is used in Highway bridge decks, Service ramps, Multi-storey car parks and so on.
It is used to prevent buildings or bridges appear some cracks because of climate change.
Construction programs of Modular Expansion Joint for Bridge:
(1) Set out and cut Modular Bridge Expansion Joint.
(2) Excavate and clean the Modular Bridge Expansion Joint area.
(3) Drill holes to locate the anchor bolts.
(4) Place the rebar mat and mold.
(5) Pour bottom concrete layer.
(6) Install comb-shaped steel plate.
(7) Pour side concrete.
(8) Maintenance the Modular Bridge Expansion Joint.
And other types expansion joints. We could produce them as customers’ requirements.
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