重力拱坝坝体三维有限元稳定分析

摘要

Because the gravity arch dam is gravity based which puts great stress on the beams ,so stability issue becomes the main problem of these dams .In order to verify the safety and feasibility of the gravity arch dam design of a reservoir , the finite element software ADINA was adopted to carry out a three dimensional stability analysis for the dam .The defor-mation of the dam under different stress at the normal storage level ,the design flood level and check flood level were cal-culated through the simulation .The results indicate that the distribution of stress and strain of the dam body are in line with the actual situation and the values are within the allowed range .This study will not only provide an important techni-cal support for practical engineering design and construction ,but also an effective reference for the similar engineering constructions .%由于重力拱坝主要依靠梁的作用即以重力作用为主，所以稳定问题显得更重要。为了验证某水库重力拱坝坝体设计的安全性与可行性，采用有限元计算软件 ADINA 对该重力拱坝进行了三维稳定分析，模拟计算出了正常蓄水位、设计洪水位、校核洪水位下的坝体应力变形情况。从计算结果可以看出，该坝坝体的应力应变分布规律均符合实际情况且应力值都在允许的范围内。不仅为实际工程的设计和修建提供了重要的技术依据，同时也为同类工程建设提供了有效的参考。