| Corrugated steel web PC composite box girder is a replace ordinary box girder with corrugated steel web plate concrete web of new steel-prestressed concrete composite structure. Long-span bridges in the engineering practice shows that the quantitative composite box girder with corrugated steel web PC structure can reduce the weight of the bridge superstructure, can significantly reduce the effects of earthquake excitation, to a certain extent, improve the seismic performance of the bridge. So, combination of corrugated steel web PC box girder bridges in earthquake-prone areas of application prospect is very broad.This article for the chongqing municipal science and technology commission project "combination of corrugated steel web PC box girder bridge" key technology research and chongqing city is built appoint project "combination of corrugated steel web PC box girder construction technology of long span continuous rigid frame research" part of it. In recent years the domestic several big earthquake, the earthquake brought us a very heavy lesson, especially as a lifeline engineering seismic performance of Bridges are increasingly brought to the attention of the people. In order to minimize the harm of the earthquake on the bridge, in this paper, the combination of corrugated steel web PC box girder continuous rigid frame bridge has carried on the dynamic characteristics and seismic performance are analyzed. At this point, this article has carried on the following several aspects:â‘ This paper discusses the general situation of the development of corrugated steel web PC box girder bridge and its technical characteristics, and analyzes the corrugated steel web composite box girder at present situation of the study on dynamic characteristics and seismic performance, at present the research status and research topic in this paper, we study questions.â‘¡Based on the theory in a corrugated steel web PC- spend tianhe long span continuous rigid frame bridge as the engineering background, using the finite element analysis software Midas Civil was carried out on its dynamic characteristics analysis, and compared with ordinary concrete PC continuous rigid frame bridge analysis; In addition, in this paper, and the cross section parameters on corrugated steel web plate dynamic properties are studied, the influence of long span continuous rigid frame of corrugated steel web plate under different the size of the horizontal Angle of the panel and folding the dynamic performance of the bridge are analyzed.â‘¢Respectively, with response spectrum method and dynamic time history analysis method, the corresponding to the tianhe bridge seismic analysis of both the corrugated steel web PC continuous rigid frame bridge with ordinary PC continuous rigid frame bridge seismic response; And comparative analysis of the flower tianhe bridge under two kinds of analysis method of earthquake corresponding different. |
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