THEORETICAL ANALYSIS OF EFFECT OF LATERAL RESTRAINTS ON RC FRAME BEAMS STRENGTHENED WITH EXTERNAL PRESTRESSING TENDON

Based on the experimental study on four RC frame beams strengthened with external prestressing tendon, the effect of lateral restrains on loaded behavior of frame beam is analyzed;, The number of effective prestress of frame beam by the influence of lateral restraints is discussed ; Then the finite element software is used, and the effect of the change of differ parameters and lateral restrains on frame beams strengthened with external prestressing tendon is analyze further.