The Design And Force Analysis Of A New Type Of Double-Circular Underground Complex

To solve the worldwide problem of traffic congestion,sponge the integration of urban and comprehensive tube,save construction investment and create "man on the earth,and vehicle in the ground" green ecological city,in response to national center city strategic layout,to participate in the international metropolis,grabbing the core technology of a new round of urban development,the underground space in the city center is stratified,integrated,networked and intensive,and it is more and more emphasized that the underground space environment and urban ecological culture merge.In recent years,urban underground space in China has obtained the development which progresses by leaps and bounds,the domestic many cities in the underground traffic,underground public services,municipal utilities,the underground space of disaster prevention and other facilities,have made great progress in such aspects as the underground space development and construction of the main consideration,the orbit transportation construction and urban renewal transformation,new city new district development,major municipal infrastructure construction,the combination of both the overall development,the installment construction.Due to the scarcity of underground space and almost irrefragable,to set "urban underground pipeline corridor,underground expressway,urban underground space" as one of the large underground complex use of high performance requirements,such as high security,high resistance to power performance,high durability,high water proofing property is equal to one.However,a large section of the underground complex is bigger,tank shell thickness reaches 1～2 m,how to decrease the thickness of the module,how to layout module internal space,series of problems such as how to determine the best parameters,are lack of studies at home and abroad.Therefore,an urgent need to an underground complex structure system planning and design methods of research,to provide theoretical support for large-scale underground complex construction,to adapt to the national green building and sustainable development strategy.Therefore,this paper conducts numerical simulation of the double circular underground complex and conducts system parameter analysis.The main contents are as follows:This paper based on Shenyang underground pipe gallery(south canal section)project a range as an engineering background,combined with the geological conditions of Shenyang,refer to the requirements of the standards to design the structural configuration of the underground complex pipe pieces,using ABAQUS to build model of the double circular underground complex lining segments.By the calculation of the pipe to analyze the performance of the pipe,and the number of shield plate of the large section was analyzed,the position of the transverse diaphragm was adjusted and the force performance of the tube plate was affected by the vertical partition.Analysis of which configuration is most reasonable.Using ABAQUS to build the most reasonable configuration structure model,analyze the influence of soil depth,syntheses of internal partition wall thickness,thickness,wall thickness in the middle of the adjustment and the gull-wing thickness.The results are compared and analyzed in ABAQUS,and the influence of different parameter changes on the mechanical properties of the double-circular underground complex.Adjusting which complex is the most reasonable.This underground complex will play a guiding role in practical engineering in the future.