By altering the length of some structural members while keeping the prestress level above a given lower bound without relaxation, the nodal displacements of prestressed cable structure are controlled.
By altering the length of some structural members while keeping the prestress level above a given lower bound without relaxation, the nodal displacements of prestressed cable structure are controlled.
在保证预应力索结构各索段一定的预应力水平且不致松弛的情况下，通过改变结构中某些索段的长度，来达到控制节点位移的目的。