|
|
|
한국지반공학회 / v.16, no.2, 2000년, pp.23-30 
|
깊은 굴착시 버팀대 선행하중과 흙막이 구조물과의 상호 관계
( Correlation between Strut Preloading and Earth Retaining Structures in Deep Excavations ) |
| 양구승;오성남; 삼성물산 건설부문 기술연구소 수석연구원;(주)스마텍엔지니어링 이사;
|
|
|
 |
|
| |
| 초 록 |
|
|
| The use of strut-preloading method is gradually increasing in braced excavations in Korea. And it is necessary to analyze the effects of strut preloading on the wall deflection, wall bending moment and strut axial force, etc. In this study, by using the analysis method of beams on elasto-plastic foundations, measured data and calculated results of 2 sites are compared and parametric studies of correlation between preloading and earth retaining structures in sandy soils are carried out in strut preloading application. As results, about 50%~75% of design strut load is effective as preloading force in considering the displacement and member forces of earth retaining structures. And the effective stiffiness of strut should be at least 25% of th ideal value in order to restrain the excessive increase of wall deflection and bending moments. As one of some methods to prevent excessive movements in braced excavation, to preload the strut is confirmed as more effective way than to increase the stiffiness of strut in braced wall, if the excessive axial force of strut due to preloading can be avoided. |
| |
| 키워드 |
| Braced excavation;Preloading of struts;Wall deflection;Structural member forces; |
| |
|
|
|
|
한국지반공학회논문집 / v.16, no.2, 2000년, pp.23-30
한국지반공학회
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200011920440999)
언어 : 한국어 |
|
| 논문 제공 : KISTI 한국과학기술정보연구원 |
|
|
|
|
|
|
