Aseismic Analysis Of The Bended Pipe Built In The North Shore Of The Through Yellow Rive Engineering Of The Midline Of South-to-North Water Diversion

During the last few years,with the development of economy, the buried structures have been widely used in water power engineering, transportation engineering, urban construction, military and people's air defense project. As most areas of our country belong to the earthquake-fortified regions, the aseismic design and performance evaluation of the buried structures have become a more and more important subject to engineers.South-to-North Water Diversion is a strategic and fundamental engineering, which can solve the water requiring in the north. There are many underground buildings used in the project,so how to ensure the aseismic ability of these structures is a question of great importance. In this paper, the bended pipe built in the north shore of the Through Yellow Rive engineering of the midline of the South-to-North Water Diversion is taken for example. And based on the basic theory of soil-structure interaction, an aseismic analysis is done to it with FLAC programe.The main investigations of this paper are comopose of the following parts.(1) The situation of the research about the aseismic of buried structures' durability is summarized, and the principle of simulating the soil-structure interaction with finite difference method is illuminated. This enable us to do further investigation.(1) A 3-D soild model is built with ANSYS programe, then it is transformed into FLAC through other softwares. In this way, we can solve the problem of FLAC in building complex model.(2) The theory of strength is brought into the FLAC programe by redeveloping skills,and it can be used to find out the weak place of structure. To the soild element, we can only calculate the principal stress of the element, and can not express the failure of structure straightly. Via programming in FISH language, the function of finding out the weak place of structure through the theory of strength for concrete is made up. A few other programes are also designed. By using them, the max response of every section of the structure can be displayed. Then research will be more...