【作者】 万中喜；

【导师】 陆培毅；

【作者基本信息】 天津大学 ， 结构工程， 2004， 硕士

【摘要】 本文较系统的分析了黄骅港软土的工程特性、黄骅港软土与天津新港软土的异同点以及两种地基处理方法对黄骅港软土的适用性。在总结黄骅港建港11年来多项工程地质资料的基础上,采用地质和数理统计的分析方法,查明了黄骅港软土的成因、分布和构造特征,弄清了软土的应力历史、颗粒含量、塑性图分类等基本性质以及十字板抗剪强度Cu和软土的各项指标沿深度的分布与变化规律,绘制了各软土层的τ-p曲线、e-p曲线,提供了各软土层的强度指标标准值、强度增长公式以及简化的沉降计算公式,建立了软土的物性指标之间、物性与力学指标之间的相关关系。通过与天津新港软土的对比,得出了黄骅港软土与新港软土不但具有相同的基本性质,而且黄骅港软土的工程特性总体上要优于新港软土,新港软土地基的各项成功经验,可以应用于黄骅港。通过对真空预压和水泥搅拌法对黄骅港软土地基的处理效果分析,论证了这两种方法对黄骅港软土的适用性。更多还原

【Abstract】 This thesis presents the analysis of engineering property of soft clay fromHuanghua Port, comparison with soft clay from Tianjin Port and application of twoways to improve soft foundation.Based on engineering geological datum from construction for eleven years, suchfeatures as genesis, particle fraction, classification of plastic chart, structure,distribution, stress history, vane-shear test strength Cu and evolvement trend ofdiversified physical and mechanical index with depth of soft clay from Huanghua Portare be described by geological analysis and mathematical statistics. The curves of τvs.p and e vs. p are plotted herein. By synthetic study, the standard value of shearstrength index, strength gaining formula, simplified equation for settlement estimate,correlations among physical indexes, physical and mechanical indexes are also givenin the thesis.Compared with soft clays, the result is shown that the engineering property ofsoft clay from Huanghua Port is superior to Tianjin. Otherwise, these soft soils havethe same basal attribution. Therefore, various favorable experiences in soft foundationimprovement from Tianjin port can be adopted in Huanghua. In particular, theapplication of two subsoil treatment approaches of vacuum dewatering consolidationand soil-cement processing to soft soil from Huanghua is demonstrated by treatmenteffect analysis.更多还原