The pre-stressed truss shell system is a new-style spatial hybrid tension structure developed on the basis of beam string structure.

A new pattern of support technology of prestress trusses was expounded in detail,including its conception,mechanism,advantages as compared to anchor cable,forms,and construction technique.

2 meter-span inversion-triangle-section prestressed space trusses.

Based on the principle of orthogonal test and computer numerical simulation method,design optimization of large cross section tunnel prestress truss and anchor rope support parameter is carried out in this paper.

Friction sliding cable element for structural analysis of prestressed steel truss;

In consideration of the randomness of elastic restraint stiffeness and both cable stiffeness and cable pretension, the general formulas for analyzing random internal forces of the prestressed steel truss by perturbation methed are obtained.

On the basis of establishing the fundamental computational theory of the cable prestressed steel trusses, the general formulationes of the random internal force analysis and sensitivity analysis of the plane prestressed steel trusses are presented in consideration of randomness of the cable stiffness based on the perturbation methods, and also some computational examples are put forward.