摘要
在现有研究的基础上,可以用正弦,指数或双曲线函数来模拟松弛应力,挤压应力与位移之间的关联。从双曲线函数这一方面入手,通过水平基床系数结合邓肯-张模型确定公式中参数,建立了考虑位移非线性影响的主动与被动土压力计算公式。该公式简单易懂,物理含义明确,能够反映位移对土压力的非线性影响,具有较好的可计算性,能够很好的模拟出支护结构土体位移的情况。
On the basis of existing researches,the sine,index or hyperbolic function is adopted to simulate the slack between relaxation stress,compressive stress and displacement. By using the hyperbola,this paper estab-lishes calculation formula of active and passive earth pressure under the influence of the nonlinear displacement through the horizontal foundation coefficient of sub-grade reaction combined with Duncan-Zhang model to de-termine the formula parameters. The formula,which is easy to understand and has definite physical meaning with great computability,can reflect the nonlinear influence of displacement on active and passive earth pres-sure and simulate better the situation of soil displacement of retaining structure.
出处
《华东交通大学学报》
2013年第6期49-54,共6页
Journal of East China Jiaotong University
关键词
双曲线
土压力
位移
水平基床系数
hyperbolic curve
earth pressure
displacement
horizontal coefficient of sub-grade reaction
