悬索结构设计新构想及倒张拱钢索桥的设计计算

A NeW Idea of the Suspending Cable Cable Structure Design and the Design of the Inverse Tesnsion Cable Bridge

提出一个减少悬索结构工作变形的新构想，即加少量的倒张索及拉杆，并在设计计算上保证实现主索上的荷载替换。把这构想用于钢索桥的设计，创造了倒张拱式（或双层式）新型钢索桥。介绍了为实现荷载替换而提出的设计计算理论及方法。模型和实桥的测试都证明了所提理论及方法的正确。

A new idea has been presented that the working deformation of suspending structures can bereduced by using a small amount of inverted cables and pull bars,if the realization of load substitution inthe main cable can be guauanteed in the design and calculation。The idea being applied to the design ofcable bridge,a new type ofcable bridges the inverse tension cable bridge has been invented.the theorv and method of design and calculation for the realization of load substitution have been offered.Testsfor models and actual bridges have proved the new theorv and method to be correct。