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该文为研究北京地区建筑工程抗浮设计水位不同计算方法之结果的差异,应用FEM渗流模型和相关分析法对凯恒中心南区工程抗浮设计水位进行了计算。结果表明,FEM渗流模型所计算的抗浮设计水位值为37.12m,相关分析法所计算的抗浮设计水位值为36.30m,两者相差0.82m。在抗浮水位设计咨询中,应用FEM渗流模型计算抗浮水位设计值的情况较多,在实践中比较成熟,在北京地区具有一定的普遍性,但在上层滞水资料缺乏的地区有些困难。而相关分析法其应用前提是层间水与承压水具有较好的相关性,在上层滞水资料缺乏的地区,相关分析法是对FEM渗流模型计算较好弥补。
In order to study the difference of the results of different calculation methods of anti-flooding design water level in Beijing area, FEM is applied to calculate the anti-floating design water level in the southern area of Kaiheng Center using FEM seepage model and correlation analysis method. The results show that the calculated value of anti-floating design water level for FEM seepage model is 37.12m, and the relevant anti-floating design water level value calculated by correlation analysis method is 36.30m, the difference between them is 0.82m. In the design of anti-floating water level, the design of anti-floating water level using FEM seepage model is more and more mature in practice and has certain universality in Beijing. However, it is somewhat difficult in the areas where the upper water stagnant data is lacking. The correlation analysis method is based on the premise that inter-layer water has good correlation with confined water. In the area where the upper water stagnant data is lacking, the correlation analysis method is a good remedy for the calculation of FEM seepage model.