摘要
针对地应力场分析计算时边界荷载难以确定的问题,将模拟退火和粒子群优化算法引入到地应力场的分析研究中。由于粒子群算法容易陷入局部最优的缺陷,结合模拟退火思想与粒子群优化算法形成一种混合优化算法,以提高粒子群算法的收敛精度。运用该算法对新疆哈德布特水电站地应力场进行分析研究。计算结果表明:地应场计算值和实测值吻合较好,说明该混合优化方法具有较高可靠性。
As it is difficult to define the boundary conditions when a field geostress analysis is carried out, we apply the parti- cle swarm optimization algorithm and simulated annealing algorithm into the field geostress analysis. As the particle swarm optimi- zation algorithm has a defect of falling into local extreme easily, the simulated annealing algorithm is introduced to form a new hy- brid optimization algorithm to improve computational precision. Using this hybrid algorithm, the in - situ geostress field of Hade- bute Hydropower Station is analyzed. The calculated results match the measured results very well.
出处
《人民长江》
北大核心
2011年第23期65-67,97,共4页
Yangtze River
基金
"十一五"国家科技支撑计划项目(2008BAB29B01)
水利部公益性行业科研专项项目(201001009)
中央级公益性科研院所基金项目(CKSF2011020)
国家重点基础研究发展计划"973"项目(2011CB710603)
关键词
地应力
模拟退火
粒子群
哈德布特水电站
in - situ geostress
simulated annealing
particle swarm
Hadebute Hydropower Station
