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On the Amplitude of Earth Pressure of Cohesive Soil

Memoirs of the Faculty of Engineering, Yamaguchi University Volume 29 Issue 1 Page 11-20
published_at 1978
KJ00000156220.pdf
[fulltext] 1020 KB
Title
地震時, 粘性土の振動土圧について
On the Amplitude of Earth Pressure of Cohesive Soil
Creators Ohara Sukeo
Creators Yamamoto Tetsuro
Creators Nishida Yuji
Source Identifiers
After Mononobe and Okabe proposed a formula to compute a seismic earth pressure, some studies on a seismic earth pressure of sandy soil have been made. On the contrary, the study on a seismic earth pressure of cohesive soil is few. But in view of following fact, it is necessary to clarify the seismic earth pressure of cohesive soil. That is, there is no established method for the calculation of a seismic earth pressure of cohesive soil during an earthquake. As a basic investigation on a seismic earth pressure of cohesive soil, the authors conducted the vibrating experiments using a shaking table. They are performed on a nearly saturated Ube clay which was consolidated in a shaking box with fixed wall or movable wall. Main conclusions are as follows : (1) The distribution of amplitude of earth pressure is depended on the distribution of water content in a soil layer. (2) At the rotational angle of wall θ (=y/h)=5.0×(10)^<-5> rad, the amplitude of earth pressure is inverse triangle pattern which upper earth pressure is larger than lower earth pressure, but, at θ=1.0×(10)^<-3> rad it changes to triangle pattern which middle one is largest. where, y and h are the displacement and height of wall, respectively. (3) The effect of a surcharge on the resultant force of amplitude of earth pressure acting on fixed wall becomes notably large when l/H_0 is about 0.7. where, l : distance from the wall to the center of the position of surcharge on soil layer, H_0 : thickness of soil layer.
Subjects
土木工学 ( Other)
Languages jpn
Resource Type departmental bulletin paper
Publishers 山口大学工学部
Date Issued 1978
File Version Version of Record
Access Rights open access
Relations
[ISSN]0372-7661
[NCID]AN00244228
Schools 工学部