Impact of Micropiles Installation on Liquefaction Potential of Saturated Silty Sand Using Numerical Method

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Taherabadi Ehsan; Naeini Seyed Abolhasan

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Paper Information

Journal: JOURNAL OF ENGINEERING GEOLOGY Year:2020 | Volume:13 | Issue:Supplement 5 Page(s): 147-176

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Information Journal Paper

Title

Impact of Micropiles Installation on Liquefaction Potential of Saturated Silty Sand Using Numerical Method

Author(s)

Taherabadi Ehsan | Naeini Seyed Abolhasan | Issue Writer Certificate

Keywords

Numerical simulationQ1

micropileQ1

saturated sandQ1

liquefaction potentialQ1

Abstract

This paper investigates the effect of micropile installation into saturated sandy soil by means of finite element method. The obtained results from numerical modeling are compared with the received data from the site. The validation of software has been done by simulating standard penetration test. The effect of some changes in spacing (3m, 1. 6m and 0. 8m) and injection pressure (1cm, 2. 5cm, 5cm and 10cm boundary displacement) micropiles on liquefaction behavior was discussed. The results show that numerical modeling presented a conservative conclusion about the potential of liquefaction. The modification of soil increased by increasing injection pressure of grout. Also, it was observed that the effect of micropile spacing has less impact than the injection pressures up to 1m free distance of micropiles. Then for closer micropiles, the effect of spacing and the effect of pressure became bold and intensive, respectively. Because of direct relationship between number of SPT and liquefaction potential, it would be necessary to simulate SPT and to validate with the real data, before and next of micropile installation. This approach can be a proper way of forecasting the efficiency degree of modification by micropiles and could save costs and time.

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APA: Copy

Taherabadi, Ehsan, & Naeini, Seyed Abolhasan. (2020). Impact of Micropiles Installation on Liquefaction Potential of Saturated Silty Sand Using Numerical Method. JOURNAL OF ENGINEERING GEOLOGY, 13(Supplement 5 ), 147-176. SID. https://sid.ir/paper/405682/en

Vancouver: Copy

Taherabadi Ehsan, Naeini Seyed Abolhasan. Impact of Micropiles Installation on Liquefaction Potential of Saturated Silty Sand Using Numerical Method. JOURNAL OF ENGINEERING GEOLOGY[Internet]. 2020;13(Supplement 5 ):147-176. Available from: https://sid.ir/paper/405682/en

IEEE: Copy

Ehsan Taherabadi, and Seyed Abolhasan Naeini, “Impact of Micropiles Installation on Liquefaction Potential of Saturated Silty Sand Using Numerical Method,” JOURNAL OF ENGINEERING GEOLOGY, vol. 13, no. Supplement 5 , pp. 147–176, 2020, [Online]. Available: https://sid.ir/paper/405682/en

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