The Pretension Monitor And Testing Analysis Of Pre-stressed Concrete Frame Beam

Pre-stressed concrete technology has already gotten increasingly comprehensive application in civil engineering in our country. With the development of society more and more residential construction, public works and industrial premises require structural system with wide span and large column grid. Because pre-stress technology can solve rigidity of concrete beam in long span structure, control structure' crack and deflection better, and possess favorable economy, now widely apply to wide span frame construction.However, there are some shortcomings in designation when pre-stressed technology applied to large column grid. For example, tendon have over loss in friction; there is no precise algorithm for bilge calculation; and we need further study on loss of pre-stress impacted by frame post' sidewise restraint to pre-stressed girder. There issues should persecute application of large straddle fame construction of pre-stressed concrete.This text mostly incorporate with a certain higher lever's construction course of pre-stressed frame girder in Anhui province .By actual measurement and theoretical analysis, we researched invert arch count in frame girder; stretching constraint loss; as well as curve stretching friction loss and so on. Compared model calculated values and ANSYS finite element analysis cost and measured values, we can arrive some conclusion and suggestion.