Study On The Strengthening Technology Of Concrete Structures And Software Development

The study of strengthening technology of concrete structures has recently become one of the focus in the field of civil engineering. Compared with the developed countries, the whole level of strengthening technology of concrete structures is lower in our country and there are still many problems that should be solved at present. According to the application in the engineering, the strengthening technology of concrete structures has been researched systematically and the participatory software of strengthening design of concrete structures is developed in this paper. The whole paper including:1. Study on the basic strengthening methods of concrete structures. The design calculation methods of the cross section of concrete beam strengthened by CFRP is researched, and the double-critical factors methods is introduced in the paper which improves the calculation methods of current specifications. The calculation method of cross section ductility of concrete member strengthened by CFRP is presented, and the factors influencing ductility is discussed. The mechanics model is established to analyse the vibration of external tendon in externally prestressed strengthening methods, and the suggestions to control it are presented. The integrated strengthening technique of concrete structures is put forward, and its design methods is discussed.2. Study on the seismic strengthening technology of concrete structures. Several problems on the connection with the current code in seismic strengthening of concrete structures using traditional strengthening methods are researched. The characteristic of seismic isolation technique is illuminated by numerical example, and the design and construction method of seismic strengthening of concrete structures using seismic base isolation technique is discussed.3. Sutdy on the concrete structural strengthening design optimization theory. Based on dynamic reliability, the problem of strengthening design optimization is discussed. The basic system of strengthening design optimization methods is established.4. Participatory development of the first professional structural strengthening software system—— Southeast University Deep (SEU-DEEP).