《建筑抗震设计规范》(GB50011-2010)中液化判别公式改进思路解析

Improvement of liquefaction criterion in Code for Seismic Design of Buildings(GB50011-2010)

本文通过对近年来国内外地震砂土液化判别概率方法的发展介绍,阐明了《建筑抗震设计规范》(GB50011-2001)中的液化判别公式需要改进的主要问题;并着重分析介绍了《建筑抗震设计规范》(GB50011-2010)建立液化判别公式中所采用的人工网络模型、可靠度理论等新思路和新方法;进而通过对2010版规范与2001版规范液化判别公式的计算对比,分析说明了2001版规范液化公式无论形式上还是理论深度上,在与2001版规范保持最大限度的一致性和延续性的同时,也进行了更为科学、合理的改进,保证了国家标准的前瞻性、科学性和权威性。

Based on the introduction about the development of probabilistic methods for soil liquefaction evaluation in recent years at home and abroad,the paper explains the main problems existing in the liquefaction formula of Code for Seismic Design of Buildings（GB50011-2001）.And it emphatically analyzes the ANN model and reliability theory applied in Code for Seismic Design of Buildings（GB50011-2010）.Through the comparison,it can be found that the formula of 2010 version not only maintains consistency and continuity with 2001 version as far as possible,regardless of in form or in depth,but also makes some more scientific and reasonable improvements.As a result,it ensures that the national standard keeps its foresight,scientificity,and authority.