改进的地基沉降计算的工程方法

发布时间：2018-03-13 05:31

本文选题：地基工程　切入点：地基沉降　出处：《岩石力学与工程学报》2017年S2期 　论文类型：期刊论文

【摘要】：目前工程实践中的地基沉降计算方法主要依靠的仍是规范中的工程方法,即以压缩模量用于分层总和法计算压缩沉降,再乘以经验系数进行修正,经验系数为0.2~1.4,经验系数差异性大且还不足以修正。为改进其不足提出改进的方法:对于硬土地基,建议采用变形模量用于分层总和法计算沉降,取消经验系数修正,并建议变形模量的经验估算方法;对于饱和软土,在规范方法基础上,建议根据荷载水平或稳定安全系数计算修正经验系数的方法,可以避免因人而异的主观取定,从而为实际工程提供一个简便实用的沉降计算工程方法。案例计算表明其可以有效提高沉降计算的精度。
[Abstract]:The engineering method is still standard in the current engineering practice of foundation settlement calculation method mainly depends on the compression modulus for the layerwise summation method compression settlement, multiplied by the empirical coefficient correction, empirical coefficient 0.2~1.4, coefficient difference and experience is insufficient to correct. In order to improve the shortcomings of improved methods for hard soil, recommended for deformation modulus of layered summation method settlement calculation, cancel the empirical coefficient correction, and suggested that the deformation modulus of the estimate method; for the saturated soft soil, in the standard method based on the method proposed modified empirical coefficient calculation according to the load level or the stability safety factor, can avoid the subjective and It differs from man to man. determination. To provide a simple and practical engineering settlement calculation method for practical engineering. The case study shows that the settlement calculation can effectively improve the precision.

【作者单位】：广东省水利水电科学研究院;华南理工大学土木与交通学院;广东省岩土工程技术研究中心;
【基金】：国家自然科学基金资助项目(51778152) 广东省省级科技计划项目(2014B070706008)~~
【分类号】：TU433

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