To take advantage of the cable’s high strength while minimizing its negative features, designers must use greater inventiveness and imagination than are required in conventional beam and column structures. Providing an efficient means of anchoring the large tensile force carried by cables. Preventing large displacements and oscillations from developing in cables that carry live loads whose magnitude or direction changes with time. To use cable construction effectively, the designer must deal with two problems:ġ. Because of their great strength-to-weight ratio, designers use cables to construct long-span structures, including suspension bridges and roofs over large arenas and convention halls. Use the general cable theorem to establish a funicular shape of an arch for which forces are in direct compression along the arch, resulting in an efficient minimum weight arch design.Īs we discussed in Section 1.5, cables constructed of high-strength steel wires are completely flexible and have a tensile strength four or five times greater than that of structural steel. Study the characteristics, types, and behavior of cable and arch structures.Īnalyze determinate cable structures and calculate support reactions by two methods, namely by equations of static equilibrium and by the general cable theorem, as well as determine the cable forces at specific points along its length.Īnalyze determinate three-hinged arches and trussed arches.
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