带刚性域箱涵结构分析智能软件的实现

Realization of Structural Analysis Software for Box Culvert with Rigid Zone

箱涵作为输水建筑的重要结构被广泛采用,在其梁柱结合部存在刚性域.设计人员多依靠经验对结构内力进行折减,缺乏理论依据;通用的有限元分析软件不能有效地考虑刚性域的影响.为解决此类问题,以矩阵位移法为基础建立了带刚性域箱涵结构内力计算公式,编写出带刚性域箱涵结构内力计算程序,并实现该程序的智能化,开发出专门用于箱涵结构内力计算的实用软件,该软件可用于多孔箱涵结构设计.工程实例对比计算结果表明,在箱涵结构中考虑刚性域是非常必要的.

Box culvert is widely used as an important structure of water conveyance structure. There is a rigid zone in the beam-column joint. In most cases, designers decrease structural internal force according to their experience, which lacks theoretical foundation. General finite element analysis software cannot effectively take the influence of rigid zone into consideration. To solve the above problems.the internal force calculation formula of box culvert structure with rigid zone was established based on matrix displacement method. The source program of internal force calculation of box culvert structure with rigid zone was compiled so as to realize the intelligentization of source program and develop a practical software which is specially for the internal force calculation of the box culvert structure with the rigid zone. This software can be used to design the structure of multiple box culvert. The computations of project examples show that it is very necessary to consider rigid zone in box culvert structure.