竖井正方形地基固结度解答及其应用

发布时间：2018-11-10 13:01

【摘要】：推导考虑正方形影响区以及影响区边界透水性的竖井地基固结度解答式。在面积相同的情况下,不同形状的影响区(正方形、正六边形、圆形)的固结度计算结果存在一定的差别。用圆形形状代替正六边形形状产生较小的计算误差,而用圆形形状代替正方形形状则会产生较大的计算误差。在考虑时间离散以及孔压传递的因素的基础上,将竖井正方形固结解应用于对模袋系统固结度的估算,估算结果与有限元计算结果基本完全吻合,而与实际室内实验结果存在较小误差,但是在误差允许范围之内。通过几何参数分析,为设计人员改善系统排水条件、实现加快系统固结提供参考,通过物性参数分析,对模袋系统材料的选取提供依据。
[Abstract]:The formula of consolidation degree of shaft foundation considering the permeability of the square affected zone and the boundary of the affected area is derived. In the case of the same area, there are some differences in the calculation results of the consolidation degree of the different shapes (square, hexagonal, circular). Using circular shape to replace hexagonal shape produces smaller calculation error, while using circular shape to replace square shape will result in larger calculation error. On the basis of considering the factors of time dispersion and pore pressure transfer, the square consolidation solution of shaft is applied to estimate the consolidation degree of die bag system. The estimated results are in good agreement with the finite element calculation results. However, there is a small error with the experimental results, but the error is within the allowable range. Through the analysis of geometric parameters, this paper provides a reference for designers to improve the drainage conditions of the system and speed up the consolidation of the system. Through the analysis of physical parameters, it provides the basis for selecting the materials of the mould bag system.
【作者单位】：中交四航工程研究院有限公司;中交交通基础工程环保与安全重点实验室;华南理工大学土木与交通学院;浙江大学滨海与城市岩土工程研究中心;浙江省水利河口研究院;
【基金】：国家自然科学基金资助项目(51308310) 浙江省科技厅创新团队建设与人才培养项目(2011F2042) 浙江省自然科学基金资助项目(LQ13E080007)~~
【分类号】：TU472

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