اتصالات متحرک پل / Bridge Expansion Joints

Bridge Expansion Joints . Joint Systems

expansion joints are best defined as those that provide support across the expansion void, without exceeding the code requirement of the 85 mm ULS unsupported gap.

expansion joints, particularly of the Modular type having movement capacities up to 2,000mm, require careful consideration as to the structural integrity of the bridge in this highly stressed area. Typical blockout depth is in the order 0f 400mm. Careful consideration is required early in the design process.  Consultation with korean engineers is recommended.

The most popular types of Expansion Joints include the Modular type with movement range up to 2,000mm, Steel Finger Joints with movement range up to 600mm. Cast Aluminium Expansion Joints with movement range up to 300mm with each type having exhibiting unique operational characteristics.

For skew applications, cast aluminium finger joints, typically having a trigular shaped finger, can be 'preset' to provide for limited skew movements. Steel finger joints, typically with rectangular shaped fingere, can be manufactured to provide for very large shew movements..

Moulded slab style joints, including the WABOFLEX or TRANSFLEX types, are alternative concepts of complying expansion joints. A transition strip is recommended when slab type expansion joints are used.