upc

• The whole thesis is divided into five chapters : ( 1 ) after summarizing and commenting substantive pertinent references and information , the factors influencing the performance of src structures and upc structures were analyzed and the technical route was advanced . ( 2 ) specimens of 16 unbonded prestressed concrete beams under low cyclic loading were tested
  全文分为五章： 1 、通过大量相关文献资料的归纳总结，评述了型钢混凝土结构和无粘结预应力混凝土结构的研究现状、已有成果和发展水平，对影响结构性能的诸多因素进行了分析，并以此为基础，提出本文研究的技术路线。