Component part of bridge Foundation Substructure superstructure Visit

Component part of bridge Foundation Substructure superstructure Visit for more Learning Resources

Component part of bridge • Foundation : the lowest artificially built part of abutments, piers & other similar structure having direct contact with the subsoil & supporting the bridge supersture • Substructure: The lower part of bridge in the form of abutment, piers, wing wall etc. along with their foundation • Superstructure: the upper part of bridge consisting of beam, girders, arches, suspension cables etc carrying communication route

Different terms • • • • Clear span Effective span Economical span Water way Natural Water way Artificial Water way Linear Water way Afflux Scour Highest flood level (H. F. L. ) Free board Lowest water level (L. W. L) Ordinary flood level (O. F. L. )

FOUNDATION CARRYING TOTAL WEIGHT • Function 1. To take load & transfer to subsoil 2. To provide level base 3. To prevent tilt& over turning 4. To avoid unequal settlement 5. To prevent sinking 6. To provide stability

Types of bridge foundation • • Spread foundation Raft foundation Grillage foundation Inverted arch foundation Pile foundation Well foundation Caisson foundation

Spread foundation

Raft foundation

Grillage foundation

Inverted arch foundation

Pile foundation

Well foundation

Caisson foundation

Piers • The intermediate supports Function • To take & transfer the load • To divide the length of bridge

Types of piers • Solid piers a)solid masonary piers b) solid R. C. C piers • Open piers a) Abutment piers b) cellular piers For more detail contact us