| In order to reduce the influence of temperature stress and the requirement of construction of the project, it is often used to expand and strengthen the construction. This thesis focuses on the analysis of the overall mechanical properties of the underground super long structure with different layout, whether it can increase the structural stability of the one-time concrete pouring quantity or layout. Based on the analysis of the process characteristics of the MIDAS engineering, this method has been used to analyze the characteristics of the underground space, which is based on Gen, and the selection principle of the seamless construction technology of the underground space is summarized, and the method and feasibility of the optimization design are also analyzed in this foundation. This thesis mainly includes the following contents:First of all, set up the calculation model of the ultra long underground engineering using the expansion and strengthening belt;Secondly, discover the distribution law of the stress and displacement of the structure plate and wall under the temperature load;Thirdly, by means of elastic finite element analysis, simulate the whole underground structure in different actual temperature conditions on the structural stress of the main factors to carry on the qualitative analysis, and find the weak link of the whole structure.Finally,calculate and analyze the displacement stress of structure column and plate, discover the change law of the different width and the influence of the distance between the expansion reinforcing band. |
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