ANALISIS PERILAKU GERAKAN MASSA TANAH DI LOKASI ABUTMEN (ABT-II)JEMBATAN SUSUKAN JALAN TOL SEMARANG SOLO SEKSI II GEDAWANG PENGGARONG MENGGUNAKAN PROGRAM PLAXIS
| Main Authors: | , Muhammad Rifqi Abdurrozak, , Prof (ret). Dr. Ir. Kabul Basah Suryolelono, Dip.H.E., D.E.A., |
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| Format: | Thesis NonPeerReviewed |
| Terbitan: |
[Yogyakarta] : Universitas Gadjah Mada
, 2012
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| Subjects: | |
| Online Access: |
https://repository.ugm.ac.id/100007/ http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=56237 |
Daftar Isi:
- Susukan Bridge is a bridge located on section II Semarang-Solo Highway, Gedawang-Penggarong. In the process of bridge construction, soil mass movement occurs around the abutments (ABT-1) which resulted uneven horizontal deformation of the Susukan Bridge Abutment (ABT-1) on the right and left. The objective in this work are to identifying the main causes of deformation, behavior of slopes, and maximum deformation that can occur at the Susukan Bridge Abutments (ABT-1). Data of slope topography, physical properties and soil mechanics, and technical data of abutments are used as input models in the numerical simulations performed with the program PLAXIS. Simulations performed with the idealization of the slopes serve as a 2-D plain strain model. Seven models used in the simulation include the conditions of the natural slope (Model I), slope by construction abutment and pier bridge (Model II), cutting the hill (Model III), the addition of bored pile in construction of abutments (Model IV), embankment on slope foot (Model V), the operational of bridge (Model VI), and operating with an earthquake load (Model VII). The results showed that the natural slope in an unstable condition with safety factor of 1.154 (rainy season) and 1.368 (dry season) with a potential landslide at the top to the bottom of the Abutment (ABT-1). Soil mass movement on the slope are triggered by the construction work of the Abutment (ABT-1) which reduces the strength of the soil, and olso the excavation at the foot of the slope. Soil mass movement patterns indicate the type of landslide movement (slide) with a curved field tends to slip (with the rotational movement). Construction of abutment secondary bored pile are not effective in raising safety factor of the slope, so that in this phase slope is in unstable condition with the safety factor of 1.058 in the rainy season and 1.092 in the dry season. Embankment at the foot of slope can increase the safety factor from 1.058 to 1.794 in the rainy season and from 1.092 to 2.128 in the dry season. Horizontal deformation of Abutment (ABT-1) in the wet season and dry season are 44.59 cm and 20.23 cm (Model II), 40.91 cm and 16.33 cm (Model III), 46.33 cm and 19.51 cm (model IV), 48.93 cm and 20.55 cm (model V), 48.96 cm and 20.97 cm (model VI), and 55.60 cm and 27.1 cm (model VI). Movement of the abutments (ABT-1) is a combination of rotational (rolling) and translation movement, where the end of the pile also moves from its position. The maximum horizontal movement of the abutments is 55.597 cm at the operational phase with the earthquake loads. Considerable movement of abutments on the rainy season simulation than in the dry season indicate that groundwater has a significant influence on the horizontal deformation of the abutment so that specific solutions are needed to control the ground water on the slope.