Bearing Capacity of Raft-Pile Foundation Using Timber Pile on Soft Soil

Harianto, Tri; Yunus, Muhammad; Walenna, Muhammad Akbar

doi:10.21660/2021.86.j2294

Cited by 7 publications

(6 citation statements)

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“…It shows adding timber piles has reduced the total settlement by 52% compared to without the timber piles, and the ratio increased to 65% when inclined timber piles were added. Similar results were also presented by Harianto et al [17].…”

Section: Introductionsupporting

confidence: 92%

“…Because of that, micro-piles are currently being developed to reduce the risk of soil liquefaction since they can increase soil stiffness and reduce soil movements. If cyclic shear strains are reduced sufficiently, liquefaction should not occur [2][3][4].…”

Section: Introductionmentioning

confidence: 99%

“…The highest settlement reduction was obtained in the raft-pile foundation, with a percentage reduction of 65% compared to the unreinforced soil. Moreover, there is no significant lateral movement observed beside the foundation [2]. Sandyutama et al tested a full-scale consolidation test with Galam timber-based pile reinforcement combined with PVD in soft soil.…”

Section: Introductionmentioning

confidence: 99%

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Soil Reinforcement Model Test Using Timber Pile at Liquefaction Area

et al. 2023

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Indonesia is a tropical country threatened by many disasters, such as earthquakes and other collateral hazards (liquefaction). Utilization of micro pile on the liquefaction prone areas is quite popular to increase the soil bearing capacity. In this research, Eucalyptus Pellita Timber was used as micro-piles alternatives. This study aims to determine the effect of timber pile addition on soil settlement and the increase in bearing capacity. Some laboratory investigations were conducted, such as timber and soil physical and mechanical characteristics, preloading tests, and seismic load tests by using small-scale shaking table test. The preloading tests were carried out for 40 days, and the settlements were recorded every 24 hours. Subsequently, seismic load tests were conducted on sandy soil with Dr = 40%. The seismic duration was 37 seconds, with PGA = 0.3 g and f = 0.78 Hz. The preloading test results show that Eucalyptus pellita timber piles are able to reduce the settlement by 18%. and from seismic load testing results are able to reduce the settlement by 68% due to earthquake loads with PGA = 0.3g and a frequency of 0.78 Hz on sandy soil with the potential for liquefaction. This is due to the resistance at the tip of the pile and the skin friction on the timber pile. So, from the results of the model test, it shows that the use of Eucalyptus Pelita timber piles can be used as an alternative to handling sandy soils in areas where liquefaction has the potential to occur. Doi: 10.28991/CEJ-2023-09-06-016 Full Text: PDF

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Section: Introductionsupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Soil Reinforcement Model Test Using Timber Pile at Liquefaction Area

et al. 2023

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“…Therefore, it is necessary to implement efforts to improve soft clay soil. Several studies on soft clay soil improvement include utilizing timber as raft-pile foundation material [1], the use of the surcharge preloading method [2], and prefabricated vertical drain (PVD) to accelerate the consolidation of road embankment in the Mekong [3].…”

Section: Introductionmentioning

confidence: 99%

The Hydrolysis Characteristics and Compressibility of Soft Clay Soil Improved Using VCM

Dewi

2024

GEOMATE

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Soft clay is identified to have some unfavorable characteristics when used as the foundation for construction work. This is due to the low bearing capacity and high compressibility which often leads to prolonged consolidation settlement. Therefore, soil improvement is necessary, and this can be achieved through the Vacuum Consolidation Method (VCM). This research focused on conducting laboratory-scale model tests to determine the characteristics of clay soil improved by vacuum consolidation in terms of its physical properties, hydrolysis, and compressibility. The results showed that the water content decreased as soil approached the Prefabricated Vertical Drain (PVD). A similar trend was also observed for the compression index value; this is because local density occurs in the soil near the PVD as a result of the movement of fine particles towards the PVD, which fills the empty pore space. Moreover, soil permeability in both vertical and horizontal directions reduced, and the soil became anisotropic after VCM improvement. The results of this research can be a consideration in the use of the VCM method for soft soil improvement, especially the problem of clogging zones that occur due to the suction pressure of the vacuum pump, which can reduce the performance of the VCM.

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“…Problematic soil (soft soil) usually necessitates the use of a soil treatment technology. One of the soil-reinforcing approaches is the use of wood as a raft foundation material [4]. Landslides can occur as a result of erosion on the surface of a slope.…”

Section: Introductionmentioning

confidence: 99%

Slope Reinforcement Model Scale Test With X-Block

et al. 2022

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This study aims to determine the material composition and dimensions of X-block, develop a slope reinforcement model using X-block, evaluate the mechanical behavior of slopes that are reinforced with rock-bound by X-block, and analyze the performance of slope reinforcement using X-block. This research was conducted at Hasanuddin University's soil mechanics and civil engineering structure laboratory. The model scale test was employed in this study. The geometrical speciation of the test box is 150 cm in length, 60 cm in width, and 100 cm in height. The X-block model was produced using concrete with a FC of 25 MPa. The X-block was divided into two types: X-block type 1 and X-block type 2. Tensile strength testing is performed on the X-block. The slopes are made of clay soil and have a slope angle of 70 degrees. The loading test was conducted in three stages: without block, with X-block type 1, and with X-block type 2. The loading test uses a hydraulic pump equipped with a load cell and LVDT. The tensile strength of X-block type 1 is 2.56 MPa, whereas X-block type 2 has a tensile strength of 4.35 MPa. The development of the type X-block design, which is used as a retaining wall material, has shown that it can effectively withstand landslides on the slopes under consideration. The slope safety factor rose dramatically after being reinforced with type X-blocks, reaching 2.73 for both X-block type 1 and X-block type 2. Doi: 10.28991/CEJ-2022-08-03-014 Full Text: PDF

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Bearing Capacity of Raft-Pile Foundation Using Timber Pile on Soft Soil

Cited by 7 publications

References 0 publications

Soil Reinforcement Model Test Using Timber Pile at Liquefaction Area

Soil Reinforcement Model Test Using Timber Pile at Liquefaction Area

The Hydrolysis Characteristics and Compressibility of Soft Clay Soil Improved Using VCM

Slope Reinforcement Model Scale Test With X-Block

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