基于e-p曲线的非线性沉降计算  

Nonlinear Settlement Calculation Based on e-p Curve

作　　者：丁灵龙 秦忠国[1] 张峰 仇宇霞 DING Linglong;QIN Zhongguo;ZHANG Feng;QIU Yuxia(College of Mechanics and Materials,Hohai University,Nanjing 210000,China)

机构地区：[1]河海大学力学与材料学院,江苏南京210000

出　　处：《粉煤灰综合利用》2020年第2期57-61,共5页Fly Ash Comprehensive Utilization

摘　　要：现阶段,工程上计算沉降的方法普遍以单向压缩的分层总和法为主,虽然操作简便,但是就计算精度而言却略有不足。此外,人工查表、插值等因素,也大大加大了计算误差。本文在分层总和法的基础之上,提出了一种新的计算方法,此方法最大的特点就是将有限元的初应变理论和e-p曲线相联系,实现了由应变场到位移场的计算过程,并通过有限元程序完成可视化计算。本文通过实际案例,验证了此方法无论是在计算精度方面还是效率方面都比分层总和法有显著的提升,因此该方法对于工程有一定的借鉴意义。At present,the method of calculating settlement in engineering is generally based on the method of layering summation of unidirectional compression.In addition,manual lookup table,interpolation and other factors,also greatly increase the calculation error.Based on the layered summation method,a new calculation method is proposed in this paper.The main feature of this method is that the initial strain theory of finite element is connected with the e-p curve,and the calculation process is realized from strain field to displacement field.Through practical cases,this paper verifies that this method has a significant improvement in both computational accuracy and efficiency compared with the layersum method,so this method has a certain reference significance for engineering.

关 键 词：地基沉降 有限元 初应变 应变场 位移场 E-P曲线 计算精度 

分 类 号：TU471.4[建筑科学—结构工程]