摘要
随着盾构机械的发展及工程建设的需要,装配式通用管片应运而生,其在盾构法施工中能够较好地保证管片成环质量并提高施工速度;但同时也对于设计过程提出了新的问题即优化拟合问题。作者对于通用管片隧道轴线布置设计中的优化拟合问题,构造了一种多参数试算算法,建立了优化函数。针对该算法计算时间较长的缺点,笔者对于该算法中的主要任务段进行了OpenMP并行化结构处理来提高效率,构建了计算程序的并行计算结构和主要参数作用域。算法经测试表明,并行后在多核台式机上总计算时间大幅减少,同时通用管片的优化拟合设计结果合理,符合设计需要。
With the development of shield machine and the technical requirements in construction, the universal segment system was invented. The universal segment system can guarantee the quality of tunnel segment as well as reduce the time of construction. In the mean time, the optimum problem in composition-design process was brought to the designers. The authors present a multi-parameters method and optimum functions to get the optimum design in the composition-design of universal segments tunnel. In allusion to the disadvantage of such method that it takes long time to compute an optimum result, the authors make the main computation course parallel with the OpenMP rules through constructing the parallel program structure and parameters-fields. The test shows that the computation time on multicore computers decreases a lot. Furthermore the optimum design is reasonable, which meets the demands of design criterion.
出处
《地下空间与工程学报》
CSCD
北大核心
2010年第2期382-386,共5页
Chinese Journal of Underground Space and Engineering
