CAJ | 학술논문

根据宁启铁路K53段地下水发育路堑并行既有线增建复线的特点，分析了在地下水发育路堑段采用钢筋混凝土U型槽的必要性。目前对于U型槽常采用的计算方法为，底板采用文克勒地基梁模型分析，而侧板采用悬臂梁模型，按照静止土压力计算；K53段工程采用有限元软件MIDAS对U型槽结构整体进行模拟，采用板单元分析路堑结构的变形及受力特征，并结合基坑围护和基底处理等设计措施，以解决施工及运营期间的地下水渗流和渗透问题。
근거저계철로K53단지하수발육로참병행기유선증건복선적특점，분석료재지하수발육로참단채용강근혼응토U형조적필요성。목전대우U형조상채용적계산방법위，저판채용문극륵지기량모형분석，이측판채용현비량모형，안조정지토압력계산；K53단공정채용유한원연건MIDAS대U형조결구정체진행모의，채용판단원분석로참결구적변형급수력특정，병결합기갱위호화기저처리등설계조시，이해결시공급운영기간적지하수삼류화삼투문제。
According to the characteristics of double line added to the existing line which is in parallel to the cutting with developing groundwater in K53 Section of Nanjing-Qidong Railway, the necessity of using reinforced concrete U-shape groove in the section of the cutting with developing groundwater is analyzed. Currently, U-shape groove is commonly calculated in such manner that the floor plate is analyzed with Winkler Foundation Beam Model and the side plate is calculated by earth pressure at rest with cantilever beam model. In the project of K53 Section, the finite element software MIDAS is used to simulate integral structure of U-shape groove and the plate unit is used to analyze deformation and forcing characteristics of cutting structure ; furthermore, combined with the designs of foundation pit support and foundation treatment, the groundwater seepage in construction and operation period could be solved.