Catia软件做为三维建模的主要手段,近年来被各大水利设计院争相使用,但其自带的有限元计算功能却在行业内应用较少,通过对不同工程实例进行计算分析,表明其对岔管线弹性的有限元计算是可行的.分别利用Ansys、Catia软件对钢制三通模型进行有限元计算,并对结果进行比较与分析,两款软件的计算结果基本一致,应力应变分布基本相同;再利用catia软件对"Y"型岔管进行了有限元计算与分析,得出的计算结果满足规范要求,应力应变分布符合一般规律.

Natural vibration frequency is related to the safety of hydropower stations under dynamic loads. It is significant to pre-dict and control the frequency during the design phase. We performed modal analysis on the hydropower house using the AN-SYS finite element softw are. Thus, we obtained the natural vibration f requency of the structure under the different material pa-rameters ( elasticity modulus and bulk density) of the first- and second-stage concrete and the foundation. We estimated the cor-relation between the structure's natural vibration frequency and the main material parameters using the syst emat ical analysis met hod based on grey relat ional grade. The follow ing conclusions were reached. When only the elasticity modulus was consid-ered, the elast icity modulus of the foundat ion had the largest influence on The natural vibration frequency, followed by the first-stage concrete and The second-stage concrete of the hydropower house. When only The concrete bulk densit y was considered, the influence of The second-stage concrete bulk density was slightly larger than thatof The first-st age concrete. When both elast icity modulus and concrete bulk density were considered, the concrete bulk density had a greater influence than elast icity modulus on the natural vibration frequency of the hydropower st ation, and their correlations w ith the natural vibrat ion frequency showed lit-tle difference. The research results can provide reference for controlling the natural vibration frequency of sim ilar structures.

水电站溢洪道导墙承受的荷载及其结构形式比较复杂.为了准确了解溢洪道导墙在复杂荷载作用下的应力及其侧向抗滑稳定性,采用ANSYS建立三维有限元模型,对溢洪道导墙控制段进行了整体空间应力与变形分析计算.经计算得到了导墙在复杂荷载组合作用下结构的整体变形和应力分布规律,并分析计算了导墙的整体侧向抗滑稳定性.研究结果表明:溢洪道导墙在复杂荷载组合作用下的整体变形和应力分布满足设计要求;导墙的整体侧向抗滑稳定性满足要求.所采用的溢洪道导墙侧向抗滑稳定性分析方法在实际工程建设中得以应用,具有广泛的适用性和一定的参考价值.

Prestressed anchor cable have been widely used as a main reinforcement method in many project cases ,mean-while ,it’s also an important approach to improve the stability of structures .According to the ANSYS simulation ,pre-stressed anchor cables were adopted to reinforce the diversion wall on a complicated foundation .the influence of design parameters of the anchor cables was studied in detail .In view of the stepped complicated foundation ,the arrangement of the anchor cables was put forward .The results indicate that the design parameters of anchor cables have different effects on the diversion wall reinforcement with prestressed anchorage on complicated foundations ,the lateral anti-sliding stability of the diversion wall is extremely sensitive to the change of the anchorage angle ,altitude and interval space of the an-chors ,with the anchorage altitude posing the most significant impact on the anchoring effects .