벽체변위에 따른 초유벽의 정적 주동 토압

Static Lateral Active Earth Pressures with Various Wall Movements

본 논문에서는 뒤채움이 사질토이고 수평면인 연직벽이 수평이동변위(ATRA)를 일으킬 때 토류벽에 작용하는 정적 주동토복을 Dubrova방법과 Dubrova방법에 Chang의 개념을 도입시킨 방법 각각으로 구하였다. 이 결과를 최근에 Fang and Ishibashi가 발표한 모형실험결과와 비교분석하였다. 또한 이미 발표한 바 있는 제(1985)의 벽체 정점과 저면을 중심으로 단전하는 정적 주동토압(AT, AB)의 경우도 상기모형실험결과와 비교분석하였다. 그 결과 다음과 같은 결론을 얻었다.

This paper first presents the distributions of static lateral earth pressure in case of translational o.all movement (ATRA) , obtained respectively by the Dubrova method and by the method where Chang's idea is applied to the former, acting on the rigid retaining vertical wall with horizontal sand backfill. Total active resultant forces and the points of application of those forces, calculated results by the two methods, are compared with the experimental results recently published by Fang Y.S. and Ishibashi I. A comparative study about the distribution of static lateral earth pressurein each case of rotation about top(AT) and base (AB), on which the writer studied previously, is also conducted along with the above experimental results. The following results are obtained 1) In case of AT and ATRA, the experimental results are in good agreement with the calculated results by the Dubrova's method. 2) In case of AB, the results of the Dubrova's method are very inconsistent with those of model test, where as th method 9.here Chang's idea is applied, corresponds well, even though there is a small deviation.