大型预应力混凝土桥梁施工阶段结构安全监控与评价技术分析-安全技术及工程专业论文.docx

PAGE PAGE IV III III ABSTRACT Along with the development of the our country’s highway transport- tation，in order to across the big river and gulf，the great bridge is needed urgently to build. the prestressed concrete consecution bridges just emerge with the tide of the times，and get a quicker development in recent years. The bridges can satisfy especially greatly request，there aren’t other stretch and shrinks in addition to the beam，it is advantage to going smoothly and comfortable. it has the characteristic of the good whole function of structure、the strong ability on anti- earthquake 、the strong ability in load and the fast construc- tion , etc. so，in the city and country，the occupy of the bridges is more and more in building of the bridge. According to the Theories on bridge structure safety monitor and valuation，and combining the engineering of the Chongqing Jiahua bridge， The text is beginning to analysis and studying to construct the structure on safety in the process monitor and evaluate，its main contents is as follows： The importance meaning and purpose on safe valuation of the bridge structure are clarified，and the safe valuation of domestic and international bridge of the present condition and the development trend are introduced. According to the characteristics on greatly bridge，the influence on various main parameter and transformed is studied. Aim to the construction control on greatly bridge，a reasonable prognosticate project is put forward，a overall monitor system build up. Elaborate systematically the contents of the bridge structure valuation 、 general method and classification，base on absorbing to have already results in basically thought of foundation，combine the research result of the domestic and international bridge valuation，build up the structure and the mode of the Chongqing Jiahua bridge with layer analysis method and misty comprehensive evaluation. This text sets out from the physically engineering，analyzing to the line form control i