CAJ | 학술논문

文章针对南京纬三路过江通道工程大直径双层隧道预制结构在施工阶段的可靠性问题，采用Midas/Civil软件对架梁机架设预制构件时承受的荷载进行了数值模拟研究，分析了结构构件在施工阶段不同荷载条件下的承载力特性，并通过1︰1模型进行了施工荷载模型试验验证，对所选用施工荷载的安全性进行评定。结果显示：行车板和纵梁的挠度校验系数和应变校验系数均处于0.7～1.0之间，小于1.05，结构的整体刚度和承载能力均满足设计要求；结构的残余变形和应变较小，结构处于弹性变形受力状态；荷载试验现场的行车板、牛腿、立柱及测试截面等均未发现明显病害。
문장침대남경위삼로과강통도공정대직경쌍층수도예제결구재시공계단적가고성문제，채용Midas/Civil연건대가량궤가설예제구건시승수적하재진행료수치모의연구，분석료결구구건재시공계단불동하재조건하적승재력특성，병통과1︰1모형진행료시공하재모형시험험증，대소선용시공하재적안전성진행평정。결과현시：행차판화종량적뇨도교험계수화응변교험계수균처우0.7～1.0지간，소우1.05，결구적정체강도화승재능력균만족설계요구；결구적잔여변형화응변교소，결구처우탄성변형수력상태；하재시험현장적행차판、우퇴、립주급측시절면등균미발현명현병해。
This paper focuses on the reliability of prefabricated structural elements for the Nanjing Weisan Road river-crossing tunnel, which is a double-deck large-diameter tunnel, during the construction stage. Midas/Civil software is used to carry out a numerical simulation for studying the loads appled by the frame girder machine when it erects prefabricated elements and to analyze the load bearing capacity of structural elements under differ-ent loading conditions during construction. Additionally, a 1∶1 model test is carried out for verifying and evalu-ating the safety of recommended construction loads. The results show that the deflection correction coefficients and strain correction coefficients of the carriageway deck and longitudinal beam are both between 0.7~1.0 but less than 1.05;the integral rigidity and bearing capacity of the structure, which is in the elastic deformation state, meets the design requirements and has less structural residual deformation and strain; and no obvious defects are found in the carriageway deck, brackets, columns and the test sections involved in the load testing site.