摘要
通过对基坑桩锚支护常用设计方法的分析 ,讨论了简支梁法与固定端法存在的不足 ,并与作者提出的改进方法进行了对比。根据某工程的弹塑性有限元模拟计算 ,得出了影响支护结构位移的主要因素是土体的弹性模量而不是结构的弹性模量结论 ,由此认为 ,弹性地基梁法具有较大的近似性。指出综合分析方法是基坑支护设计方法发展的方向 ,并给出了实例。
Currently used methods for designing anchored sheet pile wall for supporting excavation are analyzed in this paper.Some problems in the free earth support and fixed earth support methods are discussed and a comparison among the methods and improved fixed earth support method proposed by the author is given.Based on the simulation of an excavation by elastic plastic finite element method,a conclusion was drawn that the main factor affecting the displacements of the excavation is the elastic modulus of the soil rather than that of the pile.Therefore,determining the value of “m ” or “ K ” on experience rather than measurement in the beam column method has a very bad effect on the accuracy of the results.It is pointed out that easily used FEM packages for the field shiould been developed more,and such an example is illustrated.
出处
《工业建筑》
CSCD
北大核心
2001年第3期7-10,共4页
Industrial Construction
