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Static tension test of a new type of large deformation constant resistance cable

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Document pages: 9 pages

Abstract: Recently, a new type of energy absorbing cable, namely three different specifications of constant resistance large deformation cable (crld cable), was developed and tested. The effective cable shall have the ability to absorb the deformation energy generated by these seismic loads. In addition, it must be able to yield with the movement of sliding mass and long-distance plastic deformation at high displacement rate. The new cable is mainly composed of constant resistance sleeve and friction cone element, which is used to transfer the load on the slope. When bearing static or dynamic loads, especially those exceeding the constant resistance of crld cable (cr-f, static friction caused by the movement of friction cone unit in casing), the friction cone unit willmove in the casing tube along the axis and absorb deformation energy, accordingly. In order to assess the performance of three different specified cables in situ, a series of field static pull tests have been performed. The results showed that the first type of CRLD cable can yield 2000 mm displacement while acting 850 kN static pull load, which is superior to that of other two types, analyzing based on the length of the displacement and the level of static pull load.

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