Study On Construction Examination And Evaluation Of Prestressed Concrete

Construction examination of prestressed concrete is an important part of whole engineering quality examined and evaluated. However, at present, there are no integrate criterions for it in our country, particularly when it comes to the examination and evaluation in site, we have no special criterions, and concerned criterions are used as substitute.Under such circumstance, firstly, my thesis discuss on the examination and evaluation of concrete construction's components according to the latest code.Secondly, the important part of examination of prestressed action - friction loss - is analyzed by means of studying on two key factor in it, which is k and u. , a suggestion on their range is providedAdditionally .influence factors from model simplification are analyzed by Ansys Software in the paper, which include material strength, nonlinear material, structure spatiality and ducts weaken to cross-section. Analysis results indicate that each factor is weak but more attention is need yet. The reason is that the analysis results used as evaluating criterion which should be accuracy and all affects may be accumulated. In the end, the method, principle and criterion of evaluation together with verify coefficient, which regarded as core of evaluation, are put forward and establish a foundation to realize standardization.