Uplift Behavior of Belled Short Piles in Weathered Sandstone

Yang, Bang Cheng; Chen, Wenlong; Yang, Yanxin

doi:10.1155/2018/8614172

Cited by 5 publications

(2 citation statements)

References 29 publications

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“…Selama beberapa tahun sebelumnya, banyak penelitian yang sudah dilakukan mengenai belled pile. (Yang, dkk. 2018) mengatakan peningkatan panjang tiang membuat pengaruh bel menjadi lebih kecil.…”

Section: Fondasi Tiang Borunclassified

Studi Manfaat Daya Dukung Belled Pile Dan Multi-Belled Pile

Septiadi

Prihatiningsih

2020

j. mitra teknik sipil

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Foundation is a part of a structure which has a function for to resist and distribute the structure load on it to the soil. The greater load of structure resisted by the foundation make the greater uplift capacity needed. In the pile foundation the bearing capacity be affected by skin friction of the pile and end-bearing resistance, therefore one of the alternative for increase bearing capacity of the pile foundation is by use belled pile or multi-belled pile. Belled pile and multi-belled pile was a modification from the bore pile. The concept of belled pile is enlarge the size of the base pile with purpose to increase end-bearing resistance of the pile. In multi-belled pile enlarge size happen more than once, the enlarge size happen in the hard layer soil so this alternative will be suitable to applied in the soil that have a thin layer hard soil in the middle. In this study will be explained about bearing capacity behavior of the bore pile, belled-pile and multi-belled pile. The bearing capacity and volume of concrete of three type of pile will be compared. So the result of this study will show how efficient the use of multi-belled pile compared by straight bore pile. Fondasi adalah sebuah bagian dari stukrtur yang berfungsi untuk menahan dan menyalurkan beban bangunan yang ada diatasnya ke tanah. Semakin besar beban bangunan yang ditahan fondasi maka semakin besar pula daya dukung yang dibutuhkan fondasi. Pada fondasi tiang daya dukung fondasi dipengaruhi oleh gesekan selimut tiang dan tahanan ujung tiang sehingga salah satu cara untuk meningkatkan daya dukung fondasi adalah dengan menggunakan belled pile atau multi-belled pile. Belled pile dan multi-belled pile merupakan hasil modifikasi dari fondasi tiang bor. Konsep dari belled-pile sendiri adalah memperbesar ukuran penampang ujung tiang sehingga diharapkan tahanan ujung dari tiang akan meningkat. Pada multi-belled pile perbesaran penampang terjadi lebih dari satu kali yaitu pada lapisan tanah keras sehingga sangat cocok untuk diaplikasikan pada lapisan tanah yang memiliki lapisan keras tipis di bagian tengah. Pada penulisan ini akan dibahas mengenai perilaku daya dukung fondasi tiang bor biasa, belled pile dan multi-belled. Daya dukung dan volume beton yang digunakan dari ketiga jenis tiang tersebut akan dibandingkan. Sehingga hasil studi ini akan menunjukan seberapa efisien pengunaan belled-pile dan multi-belled pile dibandingkan dengan fondasi tiang bor biasa.

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Section: Fondasi Tiang Borunclassified

Studi Manfaat Daya Dukung Belled Pile Dan Multi-Belled Pile

Septiadi

Prihatiningsih

2020

j. mitra teknik sipil

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“…The influence of various parameters, for example, the bell angle and the diameter of expanded base, on the uplift capacity of belled piles in sands was numerically studied (Liu et al, 2020;Yang and Qiu, 2020). Wang et al (2021b) reported that the pile embedment and rock strength significantly affect the uplift resistance of belled piles (Yang et al, 2018). Chae et al (2012) reported that the bell shape is more significant on the pile displacement than on the uplift capacity of belled piles in weathered rocks through both model tests and numerical analyses.…”

Section: Introductionmentioning

confidence: 99%

Exploration of the slope effect on the uplift capacity of single straight and belled piles supporting transmission towers

Bian¹,

Qin²,

Peng³

et al. 2023

Front. Mater.

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Single piles are normally used to support the transmission tower in mountain areas. Uplift capacity of piles is a key factor in the engineering design to increase the stability of transmission tower foundation. This study numerically investigated the uplift capacity of single straight and belled piles in the sloping ground which consisted of a clay layer underlain by medium weathered sandstone. A non-linear 3D finite element model was proposed to describe the uplift behavior of single piles and was calibrated against a field test on single piles subjected to uplift loading. A parametric study was conducted to investigate the effect of the slope angle (θ) on the uplift behavior of single piles. The uplift capacity decreased as θ increased for either straight piles or belled piles. Moreover, the range of the equivalent plastic strain was greatest for single piles in the level ground. For piles in the sloping ground, the range of equivalent plastic strain was wider at the position of the downstream slope than that at the position of the upstream slope when the uplift load of single piles reached the maximum. As the expansion angle increased to 30° and 45°, the uplift capacity of belled piles (Ru) was increased by 100% and 180% with respect to that of straight piles, respectively. The increase percentage in Ru was independent of θ. A practical method was proposed to quantify the slope effect on Ru.

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