Analytic Methods of Main Cable Initial Curve Calculation in Variable Temperature Field
In order to study temperature effect on initial curve of main cable, three different temperature models were built about temperature changes of main cable along span direction, and iteration calculation methods to find initial curve of main cable in variable temperature field was proposed based on the theory that the length of non-stress wire strand is persistence in unloaded cable station and construction completion station. The catenary equation in variable temperature field was deduced and the suspender length variation as well as horizontal component of cable forces were calculated based on the catenary equation. Taking some suspension bridge for an example, suspender length variation, horizontal component of the cable forces and node coordinate under three different temperature models were calculated by iteration calculation methods.
X. Ren "Analytic Methods of Main Cable Initial Curve Calculation in Variable Temperature Field", Advanced Materials Research, Vols. 163-167, pp. 307-312, 2011