无粘结预应力混凝土两跨连续梁(板)塑性设计方法研究

以预应力混凝土结构设计统一理论为基础，首次提出了研究超静定预应力混凝土结构的弯矩调幅对象为（Ｍ＾支ｌｏａｌ＋Ｍ＾支ｐ）的思想；然后针对无粘结预应力工艺的固有特性，认为无粘结预应力筋在正常使用极限状态和承地菌极限状态的应力取值差别是不大的，从而提出了对普通混凝土连续次梁支座弯矩的调幅系数和连续板支座弯矩的调幅系数在无粘结预应力混凝土连续次梁和连续板的经典计算方法中仍然适用的观点：最后根据按经典方法建

Plastic design method study of two- span continuous beam(slab) of non-bonding prestressed concrete

Based on unified theory of prestressed concrete structural design,the author firstly put forward the thought that an readjust rang object of moment is (Mload + Mp) in studying statically indeterminate prestressed concrete structures.Then being directed against inherent characteristics of nonbonding prestressed concrete structures,the author think that the value of non-bonding prestressed concrete steel bar stress is not much different in serviceability and bearing capacity ultimate states;on the basis of above statement the author put forward the standpoint that readjust rang factor of support moment of R.C.continuous secondary beam and R. C,continuous slab are still suitable in classical calculation method. Finally, on the basis of the principle that established bearing capacity calculation formula by classical method is equal to unified theory set up by author. The author derives unified theory factor formula being directed against (Mload+ Mp). These will develop theory to a new stage of plastic design. The results provide basis for designing P.C.structure rationally.