摘要
本文建议用子结构法凝聚上部结构的荷载和刚度,同时用有限分层地基模型确定土体的刚度和基底反力,并计及基础自身的刚度影响,进而对箱基进行较全面的内力分析。 在此基础上,选择板、壁的厚度和钢筋用量作为设计变量,并采用可变容差法对箱基进行优化设计。利用本文编制的程序BFOD—88进行计算,所得结果比现行设计方法算得的数值降低造价13％以上。
In this paper, it is proposed that a substructural method be used to condense the load and rigidity of the superstructure, the finite layered soil model be used to determine soil's rigidity and base's reaction, the self rigidity of box foundation be taken into consideration, and the in-teral forces of box foundation be analysed completely.
On the above-mentioned bases, the thickness and reinforced area of slab or wall are selected as design variables,and the flexible tolerance method is employed to design optimum box foundation. Compared with the computational results of the current design method, the structural cost can be reduced about 13% when the program BFOD-88 worked out by authors is used.
出处
《甘肃工业大学学报》
1989年第1期96-105,共10页
Journal of Gansu University of Technology
关键词
箱形基础
上部结构
优化设计
土体
box foundation, optimization design, substructural method,finite layered soil model, flexible tolerance method
