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VOLUME XVII Edisi 2 , Agustus 2012
ANALISIS STABILITAS DINDING PENAHAN TANAH DAN REMBESAN PADA EMBUNG BABADAN, DESA GIRIKERTO, KEC. TURI, KAB. SLEMAN, YOGYAKARTA |
1)Jurusan Teknik Sipil Universitas Kristen Immanuel Yogyakarta e-mail : niknok@yahoo.com 2)Alumni S1 Teknik Sipil Fakultas Teknik Universitas Kristen |
Retaining wall construction is built to withstand the land that lies behind it due to lateral soil pressure. Retaining wall can be safely said to have been taken into account when the safety factor, both to the danger of shifting, the danger of the overthrow, the decline in carrying capacity of the soil, and fracture. This research will re-calculate the stability of the retaining wall on the job increased Babadan ponds Turi district. Retaining wall in this work included in this type of retaining wall in the form of rigid wall, the stability of the wall is obtained from its own weight of the wall construction. Re-calculation was conducted aiming to determine the stability of the retaining wall against the danger of the overthrow, shift, carrying soil and seepage under the retaining wall and its influence on the style of uplift and piping hazard. From analysis of obtained results that the retaining wall with normal water conditions, the safety factor against the dangers of the overthrow, distorting and barrying capacity of eligible defined, except on Type II safety factor does not qualify. Type II retaining wall is not safe due to the wall is too high and the wall at the back of the sloped while in Type III with the same width of the foundation wall is not high compared with the Type II and on the back wall is made up so it is safe. If the retaining wall without any water to the danger of the overthrow of the stability and carrying capacity of not achieving the specified safety factor. With the width of the foundation are less wide, it causes the value of eccentricity is outside the body retaining wall so that the resulting stability of the carrying capacity of the soil is not safe. While the stability against the danger of distorting the retaining wall Type I, II and III is safe, is due to the factor of cohesion of the soil at the base of the foundation. From these results the authors provide an alternative dimension that is safe retaining wall against the danger of the overthrow, shift and to carrying capacity of the soil. In addition, the amount of seepage discharge is q = 2.65 x 10-4 m3/det/m or 22.9 m3/hari/m. On the retaining wall does not occur piping and secure against uplift pressure. At work in the field dimensions are not safe when there is no water remains always done because it is expected ponds filled with water and with it the retaining wall will remain safe. But basically the retaining wall should be safe both on an empty no water or no water, so the wall does not collapse and result in losses. Meanwhile, to cope with the resulting reduction in the volume of seepage ponds bin, it can be made water-resistant floor coating along the retaining wall or just a few meters as needed. |
Retaining wall, stability, safety factor, seepage |
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