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۱VERIFICATION OF EXPERIMENTAL RESULTS OF IMPACT ROLLING USING ABAQUS SIMULATION AND EVALUATING OF SOIL STIFFNESS UNDER SQUARE IMPACT ROLLER
نویسنده(ها): ، ،
اطلاعات انتشار: ششمین کنفرانس بین المللی زلزله شناسی و مهندسی زلزله، سال
تعداد صفحات: ۸
The development of the low–energy dynamic compaction process like impact roller for modest but rapid improvement Of the soil properties of sand soils has provided a viable and economical alternative to traditional Ground Improvement methods for derelict land. The concept of using the WAK (Wave Activated Stiffness (K) Test) to monitor the degree of improvement during the process has prompted a rigorous programme of ABAQUS modeling of impact roller to validate the method. Results from field tests and ABAQUS modeling have shown that Both zone of improvement agree well with theoretical values. This corroboration suggests that the soil stiffness, k, damping factor, C, mass of vibrated soil, Mand depth of improvement, D. may also be predicted given sand Properties.<\div>

۲Soil Improvement using 6 Sided Impact Roller
نویسنده(ها): ،
اطلاعات انتشار: هشتمین کنگره ملی مهندسی عمران، سال
تعداد صفحات: ۸
One group of devices for soil compaction are rollers. Static, Vibratory and impact rollers have the most practical applications among them. The latter has the greater depth of influence in comparison with the others. Hence, it has more effect in soil improvement than other traditional vehicles with fewer number ofpasses. So, numerical simulation of roller is suitable for recognizing its significant components. At to now, different shapes of rollers are examined in practice that have some problems in soil rehabilitation. In this paper, a new 6 sided impact roller is introduced and simulated with F.E.M based software ABAQUS . Furthermore, its similarity with hammer in W.A.K test is studied. Results show that withincreasing the faces of roller, impact surface of roller is increased and depth of improvement will be greater than ever<\div>
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