双预应力混凝土简支梁理论分析与试验对比研究  

Comparing analysis of experimental and theoretical study on bi-prestressed concrete simple beam

作　　者：解伟[1] 陈爱玖[1] 牟晓光[2] 

机构地区：[1]华北水利水电学院,河南郑州450011 [2]河海大学土木工程学院,江苏南京210098

出　　处：《混凝土》2008年第9期91-94,共4页Concrete

基　　金：国家自然科学基金重点项目(50779018)

摘　　要：对双预应力混凝土结构概念和顶压预应力的施工工艺进行了简述,对双预应力混凝土箱形简支梁进行了理论分析。阐明双预应力梁的理论安全性,由实体梁静载试验,检验梁的承载能力,保证梁的实际承载能力,并对这两种方法的结论进行对比,从而确保新型结构的安全性,为双预应力桥梁的设计和施工提供坚实的理论依据。The conception of bi-prestressed concrete structure as well as pushing and pressing workmanship of prestress are simply introduced. Simply supported concrete beam with box shape under bi-prestressed is analyzed in theory.Theoretical feasibility of bi-prestressed beam is stated and practical bearing capacity and stiffness is guaranteed by the comparing and analyzing test of solid beam under static loads.Therefore the safety and adaptation of new type structure can be ensured.The firm theoretical base is provided for design and construction of bi-prestressed bridge.

关 键 词：双预应力 混凝土 应力 桥梁 

分 类 号：TU528.01[建筑科学—建筑技术科学]