کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4914031 1428778 2016 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Experimental studies on void detection in concrete-filled steel tubes using ultrasound
ترجمه فارسی عنوان
مطالعات تجربی در تشخیص هوای لوله های فولادی پر از بتن با استفاده از سونوگرافی
کلمات کلیدی
لوله فولادی پر شده از بتن منطقه خالی، روش آزمون التراسونیک، مسیر انتشار، کروماتوگرافی، گسیختگی،
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی
Due to shrinkage and/or inadequate compaction during concreting, voids may develop in a concrete-filled steel tube (CFST) between the concrete core and outer steel tube, which reduce the confinement effect of the steel tube on the concrete core, and further, decrease the load-carrying capacity and ductility of a CFST. In this study, an ultrasonic technique is utilized for quantifying voids in CFSTs by analyzing the ultrasound travel time in them. Four potential travel paths are identified in CFSTs with/without pre-set voids. By making a comparison of the experimental and theoretical ultrasound travel time, the actual ultrasound travel path is determined in CFSTs. Further, by analyzing the matrix of ultrasound travel time obtained from experiment, a novel method is proposed to generate the chromatogram of the distribution of ultrasound travel time, which is utilized to quantify the voids in a CFST. The chromatogram intuitively shows the position and geometry of the voids in CFSTs and is in reasonable agreement with the pre-set voids. This study, therefore, establishes a new method for quantifying voids in a CFST through the ultrasonic technique.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 128, 15 December 2016, Pages 154-162
نویسندگان
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