کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6773840 1431931 2018 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Numerical modeling of parallel seismic method for detecting existing piles in layered soil
ترجمه فارسی عنوان
مدل سازی عددی روش لرزه ای موازی برای شناسایی شمع های موجود در خاک لایه ای
کلمات کلیدی
شمع های موجود، روش لرزه ای موازی، تمامیت، موج انعطاف پذیر، آزمون غیرمخرب
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات مهندسی ژئوتکنیک و زمین شناسی مهندسی
چکیده انگلیسی
For piles connected to superstructures, whose pile tops are inaccessible, a lateral horizontal impact on the side of the piles through the generation of a flexural wave of the pile shaft is a more feasible approach. This paper presents a parallel seismic (PS) method based on the flexural wave of the pile shaft that combines down-hole tests for the length and an integrity evaluation of existing piles in layered soil. It is suggested that two PS tests be conducted by horizontal striking on the side surface of the pile along and perpendicular to the pile-to-borehole direction, respectively. The first arrivals of the transmitted P-wave and S-wave at the pile-soil interface obtained in these two PS tests and the results of down-hole tests are combined to analyze the pile length and to distinguish the embedded defects for the pile integrity evaluation. A simplified theoretical model for PS tests in layered soil is established, and a correction formula is proposed to correct the initial estimated pile length accordingly. A three-dimensional finite element model is then established to verify the effectiveness and reliability of the proposed PS method in layered soil and the correction formula.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Soils and Foundations - Volume 58, Issue 1, February 2018, Pages 134-145
نویسندگان
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