Analisis Perbandingan Daya Dukung antara Hasil Loading Test Bore Pile Diameter Satu Meter Tunggal dari Jembatan Fly Over Amplas dengan Metode Elemen Hingga
| Main Author: | Harahap, Dodi Jurkamda |
|---|---|
| Other Authors: | Roesyanto, Iskandar, Rudi |
| Format: | Masters |
| Bahasa: | ind |
| Subjects: | |
| Online Access: |
http://repository.usu.ac.id/handle/123456789/34318 |
Daftar Isi:
- The use of bore pile is usually more favorable because disturbance against environment, such as vibration and movement around the soil can be minimized. This phenomenon, especially which is related to the support capacity, influenced by the soil and rocky condition, is very interesting to be analyzed. This study analyzed bore piles which were related to the geological condition of Amplas flyover, North Sumatera. The purpose was to compare the vertical support capacity of bore pile foundation and bore pile foundation lowering, based on the data of the soil investigation in the field (SPT) and the data of the loading test by using the calculation of the Finite Element method and to understand the soil characteristics in an attempt to model and to analyze the support capacity of bore piles. The significance of the study was to predict the support capacity of the bore piles at the same project with the same parameter so that, for economic reason, the loading test was not needed to be performed so that the behavior of bore piles (whether they collapsed or not) could be known if the support capacity was increasing up to the load being programmed, and the soil characteristics could be known if they were modeled with the consolidation in seven days. The bigger the load, the more the lowering is. 150% of the biggest load found in the result of the Finite Element method (consolidation in seven days) is 9.81 mm, 125% of the biggest load found in the Finite Element method (consolidation in seven days) is 7.30 mm, and 100% of the load found in the result of the field loading test is 3.97 mm. The lowering permitted by ASTM is 25.40 mm which means that the calculation in each load, either in the Finite Element method (consolidation in seven days) or in the Finite Element method (consolidation of ASTM), and the result of field loading test are safe according to ASTM. The disturbance in the soil caused by the load will bring about high pore water pressure around the soil. If the pore water pressure decreases, due to the long period of consolidation, the soil around the pile will lower, dragging the pile downward so that it will bring about the shear force on the piling. It can be seen in the comparison of the Finite Element method (consolidation in seven days) and the Finite Element method (ASTM): the longer the period of the consolidation, the bigger the lowering of the pile.
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