CAJ | 학술논문

针对部分斜拉桥的几何非线性因素对桥梁结构的影响进行分析研究。首先介绍了斜拉桥几何非线性分析的基本理论，并以长山大桥为例，用MIDAS软件建立有限元计算模型，考虑斜拉索垂度效应、P-delta效应、大变形效应等因素对该桥进行受力分析。结果表明，几何非线性对结构变形产生较大影响，在施工时应加以重视。
침대부분사랍교적궤하비선성인소대교량결구적영향진행분석연구。수선개소료사랍교궤하비선성분석적기본이론，병이장산대교위례，용MIDAS연건건립유한원계산모형，고필사랍색수도효응、P-delta효응、대변형효응등인소대해교진행수력분석。결과표명，궤하비선성대결구변형산생교대영향，재시공시응가이중시。
The impact of extradosed cable -stayed bridge structure caused by the geometric nonlinear fac-tors was analyzed .Several sources and principles of geometric nonlinearity of extradosed cable -stayed bridge was introduced .Taking Changshan bridge as example , in the consideration of the sag effects , P-delta effect and large deformation effect , a finite element model was developed and computed using MIDAS software .The re-sults show that the geometric nonlinear factors greatly affect the structure deformation , which should be valued at the construction site .