Study On Physical And Mechanics Properties Of Silty Clay In Beidaihe New Area And Bearing Capacity Of Foundation

Since the middle of last century,scholars from all over the world have made some achievements in the study of the physical and geodynamic properties of the foundation soil and the carrying capacity of the foundation.To this day,the study of foundation soil has not stopped,and foundation carrying capacity is regarded as the focus of research.Based on the engineering feature of the foundation soil in Beidaihe New Area,this paper systematically studies the physical mechanical characteristics and ground carrying capacity of the regional foundation soil by using the methods of on-site in-place test,indoor geo-engineering test and theoretical analysis,and provides valuable physical and mechanical parameters for the development and engineering design of the new area.By means of on-site investigation,in-place test and indoor test,the distribution characteristics,structural structure and physical and aesthetic parameters of the foundation soil in Beidaihe New Area were obtained.In view of the particularity of the foundation soil distribution in Beidaihe New Area,the engineering properties of powder clay are only systematically studied in this paper.Through a large number of geo-experiments,the physical and mechanics indicators of powder clay in Beidaihe New Area were measured,the correlation between the indicators was analyzed,and the regression equations between the indicators were fitted.Based on the theory of elasticity and extreme balance,the ground-based carrying force formula of powder clay in local shear destruction mode was deduled.Through the standard entry test at the project site,the regression equation of the standard hammer number and the characteristic value of the ground carrying force was established,and the theoretical formula and Terzaghi formula derived from this paper were compared and analyzed,and the applicability of the formula is verified by the engineering example.The experimental results of this paper provide reliable basic data for the survey and design of geodesy engineering in Beidaihe New Area.The established foundation carrying capacity formula can be used as a reference application for basic engineering design in Beidaihe New Area.