基于不同规范对抗浮设防水位的研究与探讨

Research and Discussions of Water Lever for Prevetiong of Up-floating Based on Different Specifications

随着地下空间的不断发展,地下结构抗浮措施的合理性逐渐成为影响和制约工程建设安全性和经济性的重要因素之一,而作为抗浮设计、验算的基础,抗浮设防水位的确定成为了重中之重,本文通过对比、分析不同规范、标准中抗浮设防水位的定义、取值原则等可知:抗浮设防水位受众多因素影响,应按不利因素适当考虑工程时限内的可遇增幅,进而综合确定,必要时应适当提高或进行分区建议等;同时,抗浮设防水位的确定并非简单的一方之责,应保证一定的安全储备,复杂条件下应进行专项研究,必要时,进行多方复核、验证。

With the continuous development of underground space,the rationality of anti-floating measures for underground structure has gradually become one of the important factors that affect and restrict the safety and economy of engineering construction.As the basis for anti-floating design and calculation,the determination of water lever for prevetiong of up-floating has become the top priority.Through comparison,analysis of the definition and determination principle of water lever for prevetiong of up-floating in different codes and standards,the result shows that:the water lever for prevetiong of up-floating is affected by many factors.It should be appropriately considered in accordance with unfavorable factors,and the incremental increase within the time limit of the project,and then comprehensively determine.If necessary,it should be appropriately raised the water level or partitioned suggestions.At the same time,the determination of water lever for prevetiong of up-floating is not a responsibility of a single responsible subject.It should be ensured that a certain safety reserve.Special research should be conducted under complex conditions.If necessary,multi-party review and verification should be carried out.