水泥土强度对型钢水泥土组合梁的影响研究

型钢水泥土搅拌墙在基坑工程中有着广泛的应用,因为没有充分了解水泥土在搅拌墙中起到的作用,水泥土的刚度仅被作为安全储备,这无疑造成一定的浪费。为了研究水泥土强度对搅拌墙的影响,本文以水泥土强度为变量设计了系列双型钢水泥土组合梁试验,采用分布式光纤采集试验梁加载过程的应变数据,提出了针对H型钢的分布式光纤应变数据的处理方法。通过对实验数据的处理和分析,得到了水泥土强度对组合梁挠度、刚度的影响规律,以及型钢与水泥土对组合梁外部荷载的分担情况。本文对型钢水泥土搅拌墙的理论研究与实际应用有一定的参考价值。

Effect Study of Cement-soil Strength on Steel Cement-soil Composite Beam

Soil mixing wall has been widely used in foundation pit engineering.There is no full understanding of soil cement in the role of soil mixing wall and the stiffness of soil cement is only taken as a safety reserve,which will undoubtedly cause some waste.To study the effects of soil cement strength on the soil mixing wall,this paper designs a series of double-steel cement soil composite beam tests taking cement soil strength as a variable.It used the strain data of distributed fiber optic acquisition test beams loading process and put forward treatment method for H-beam distributed fiber optic strain data.Through processing and analysis of the experimental data,it got the law on effect of cement soil strength to the composite beam deflection and stiffness as well as the sharing conditions of steel and cement soil of the composite beams external load.This paper has a certain reference value to soil mixing wall theory and practical application.