One Determination of the Seismic Earth Pressure
Memoirs of the Faculty of Engineering, Yamaguchi University Volume 35 Issue 1
Page 63-69
published_at 1984
Title
地震時土圧の一つの求め方
One Determination of the Seismic Earth Pressure
Creators
Ohara Sukeo
Source Identifiers
A seismic earth pressure has been computed by Mononobe and Okabe's Formula. But, in this fotmula, cohesion is omitted. It is necessary to clarify an effect of cohesion on a seismic earth pressure, in order to establish the calculation of a seismic earth pressure of cohesive back fill. In this experiments, relations between an earth pressure and movable wall displacement are obtained at seismic coeff. k_n=0,0.1,0.2,0.3,0.4. Sands used in this experiment are dry Toyoura sand and Toyoura sand mixed with glycerin (cohesive sand). These results show a hysterisis loops. We considered that seismic earth pressure is the resistant earth pressure and proposed one calculation of seismic resultant earth thrust acted on a wall, by a comparison of dynamic hysterisis loops with static those. This calculation is attributed to the correspondence of the calculated displacement of sand layer with the displacement of movable wall. According to this method, we caluculate a dispacement of sand layer by a shear vibration theory, first and we can obtain a seismic resultant earth thrust, using Fig. 9.
Languages
jpn
Resource Type
departmental bulletin paper
Publishers
山口大学工学部
Date Issued
1984
File Version
Version of Record
Access Rights
open access
Relations
[ISSN]0372-7661
[NCID]AN00244228
Schools
工学部