Internal Force Analysis Of Reinforced Concrete Arch Under Considering The Interaction Of Housing

Bridge Treasures-FengYu bridge,covering rich and profound bridge culture that is an important part of Chinese culture.FengYu bridge is the crystallization of the builders of the wisdom and art that is witness to the historical and cultural changes and engraved on the land of China Sculpture.Access to research data about Chinese covered bridges,bridges has not regarded an independent form of bridge structure,and there are more studies on the covered bridges of history and culture,researching on the covered bridges of mechanics analysis is less and less.Comparing to the ancient lounge bridges,bridges now has complete functions,large scale,complex structure of bridge structure and the upper part of the building,so research on this kind of reinforced concrete covered bridges is particularly important.Based on the QingJiang river landscape of Sichuan Province short of engineering project as the background,access to a large number of documents,using the finite element software MIDAS CIVIL model,mainly studying the following two questions:(1)To establish finite element model is based on the thickness of different thickness of the short variable,with 2 arch ring as the research object,considering the control of four kinds of different thickness of arch ring section(left arch feet,L / 4,across the arch foot,3 L / 4,right arch feet)of internal force and displacement of change,the analysis of the effect of the variation in thickness of arch ring of arch bridge internal force.(2)Respectively,set up the whole bridge structure model and the lower structure model,arch ring 1 and 2 as the research object,consider two models respectively under different load combination of internal force and displacement of the control section,and its rate of change,the analysis of the arch combination of construction to the effect of arch ring.Through the above research and analysis show that the thickness of arch ring,the greater the relative stiffness of the arch on the building,the greater the internal force is larger,so in this paper,a reasonable determine the thickness of arch ring is 1.4 meters.Arch ring and arch on the construction of the combination of objective existence,consider building joint action on arch,covered the whole stiffness increases,the main arch ring of the internal force and displacement are decreased,but decrease rate is not big,but for some cross section will appear the change of the internal force and displacement is larger,the calculation results of the structure model of the lower partial conservative,and the whole bridge structure model is more to meet the requirements of the economy.