碾压混凝土坝温度和应力仿真计算的非均质层合单元法  

SIMULATIVE CALCULATION OF TEMPERATURE AND STRESS OF RCC DAMS WITH INHOMOGENEOUS MULTILAMINATE ELEMENT METHOD

作　　者：朱岳明[1] 马跃峰[1] 王弘[1] 张建斌[2] 

机构地区：[1]河海大学水利水电工程学院,江苏南京210098 [2]厦门市路桥建设投资总公司,福建厦门361009

出　　处：《工程力学》2006年第4期120-124,113,共6页Engineering Mechanics

基　　金：河海大学院士学科发展基金资助(HHUYS003);水利部科技创新重点项目资助(SCXC2003-10)

摘　　要：碾压混凝土坝由于施工层薄,给大坝非稳定温度和温度应力的计算带来了困难,按常规算法会有超常的解题规模和巨大的计算工作量。针对这个问题,在“非均匀单元方法”和“虚拟层合单元法”的基础上,提出的“非均质层合单元法”能够大大地降低计算规模和提高解题的效率,在理论上又较为圆满地实现了碾压混凝土坝成层非均质单元的数学处理,基本上解决了碾压混凝土坝温度应力进行精细和高效率地仿真计算的复杂问题。In roller compacted concrete （RCC） dams, it is not easy to calculate the unsteady temperature and the relevant thermal and creep stresses precisely with FEM because the lift thickness of RCC is relatively small, and the number of the lifts is too large for the temperature and stresses to be computed with a conventional homogeneous element mesh. In light of the problem, the present paper puts forward an inhomogeneous multilaminate element method, which is based on the inhomogeneous element model and virtual laminated element model. The new method can considerably reduce the scale of calculation and improve the efficiency and even have mathematically strict treatments relating to the numerical calculation of the inhomogeneous multilaminate element. The complicated simulation problem of the temperature and stresses is satisfactorily and effectively solved.

关 键 词：水工结构工程 碾压混凝土坝 非均质层合单元法 温度应力 仿真计算 

分 类 号：TV315[水利工程—水工结构工程]