CAJ | 학술논문

对常用几何尺寸不同填土高度下的圆管涵采用数值模拟的方法进行了建模计算,得出了不同工况下圆管涵洞的受力性状.结合有限元应力云图及有限元计算结果对不同工况下圆管涵控制断面环向应力及控制设计的弯矩进行了分析,绘制了弯矩图.利用结构简化计算方法对有限元方法计算结果进行了验算比较,得出了高填路堤下圆管涵典型断面.计算结果表明:采用有限单元法计算、分析涵洞结构受力性状可以合理地反映出土体和结构的共同作用,因此计算结果比一般方法更接近实际.
대상용궤하척촌불동전토고도하적원관함채용수치모의적방법진행료건모계산,득출료불동공황하원관함동적수력성상.결합유한원응력운도급유한원계산결과대불동공황하원관함공제단면배향응력급공제설계적만구진행료분석,회제료만구도.이용결구간화계산방법대유한원방법계산결과진행료험산비교,득출료고전로제하원관함전형단면.계산결과표명:채용유한단원법계산、분석함동결구수력성상가이합리지반영출토체화결구적공동작용,인차계산결과비일반방법경접근실제.
By using the finite element method,the sizes of circular pipe culvert with different depths of fill were calculated based on the modeling to obtain each kind of stress characteristics of structure pattern culvert under different operating modes.In combination of finite element stress nephogram and the finite element computed result,the circumferential stresses of control cross-section and the control bending moments of circular pipe culvert under different operating modes were analysed,and the bending moment diagram was drawn.The calculation results of finite element method was verified and compared by simplified structural calculation and the typical sectional form of circular pipe culvert was obtained.The calculation result indicates that the collaboration of soil body and the structure could be reflected by using finite element method to analyze the culvert structural stress characteristics.Therefore the computed result is more actual than that of the ordinary method.