مهندسی سازه و ساخت

مهندسی سازه و ساخت

ارزیابی میزان دی اکسید کربن تولید شده در ساخت ساختمان های کوتاه مرتبه با اسکلت بتنی، فولادی و LSF و مقایسه انواع سقف

نوع مقاله : علمی - پژوهشی

نویسندگان
1 کارشناس ارشد مهندسی عمران، مهندسی و مدیریت ساخت، دانشکده مهندسی عمران و منابع زمین، واحد تهران مرکزی، دانشگاه آزاد اسلامی، تهران، ایران
2 دانشیار گروه مهندسی عمران گرایش مدیریت ساخت، دانشکده مهندسی عمران و منابع زمین، واحد تهران مرکزی، دانشگاه آزاد اسلامی، تهران، ایران
3 استادیار گروه مهندسی عمران، دانشکده مهندسی عمران و منابع زمین، واحد تهران مرکزی، دانشگاه آزاد اسلامی، تهران، ایران
چکیده
گرم شدن کره‌زمین، تغییرات هوا و نابودی تدریجی محیط‌زیست، ناشی از انتشار گازهای گلخانه‌ای از جمله گاز دی اکسید کربن است. صنایع تولیدی و وسایل حمل و نقل از یک سو و از سوی دیگر صنعت ساختمان عامل چنین فاجعه زیست‌محیطی و در نتیجه فاجعه انسانی هستند. در گذشته مطالعات بسیاری در مورد سهم صنعت ساختمان در انتشار گازهای گلخانه‌ای انجام شده است که بیشتر این مطالعات مربوط به دوره بهره‌برداری بوده و تاکنون مطالعات زیادی برای ارزیابی میزان انتشار دی اکسید کربن در مرحله‌ی ساخت در ایران ارائه نشده است. در این پژوهش هدف، ارزیابی میزان دی اکسید کربن تولیده شده حاصل از ساخت ساختمان‌های با اسکلت بتنی، فولادی و LSF است. در راستای برآورده شدن این هدف سه ساختمان مسکونی به عنوان نمونه‌های موردی در استان گیلان، نوار ساحلی دریای خزر مورد مطالعه قرار گرفته است. میزان مصالح مورد استفاده در هر بخش از طریق متره به کمک نرم افزار اکسل، بدست آمد. میزان کربن مصالح مختلف به ازای واحد وزن مصالح مصرفی از منبع معتبر استخراج گردید. براساس محاسبات انجام شده میزان کربن تولیدی در مرحله ساخت برای سه ساختمان با اسکلت بتنی، فولادی و LSF به ازای مصالح سازه‌ای به ترتیب برابر 46/335، 89/186 و 29/134 کیلوگرم کربن بر مترمربع به دست آمد. بررسی مقایسه بیانگر آن است که میزان کربن تولیدی برای ساخت یک سازه LSF کمتر از سازه بتنی و فلزی است. همچنین تأثیر جایگزینی انواع سقف در میزان کاهش کربن برای ساختمان بتنی و فلزی مورد مطالعه قرارگرفت. میزان کربن تولیدی در ساخت سازه بتنی با سقف تیرچه پیش تنیده در مقایسه با سقف تیرچه بلوک حدود 27 درصد کاهش و میزان کربن تولیدی در ساخت سازه فلزی با سقف کامپوزیت در مقایسه با سقف عرشه فولادی حدود 5 درصد کاهش یافته است.
کلیدواژه‌ها

موضوعات


عنوان مقاله English

Evaluating the amount of carbon dioxide produced in the construction of low-rise buildings with concrete, steel and LSF frames and comparison of roof types

نویسندگان English

Mohammad Afshari Nezhad Roudsari 1
Javad Majrouhi Sardroud 2
Mohsen Jafari Nadoushan 3
1 MSc in Civil Engineering and Construction Management, Department of Civil Engineering, Faculty of Civil and Earth Resources Engineering, Central Tehran Branch, Islamic Azad University, Tehran, Iran
2 Associate Professor, Department of Civil Engineering, Faculty of Civil and Earth Resources Engineering, Central Tehran Branch, Islamic Azad University, Tehran, Iran
3 Assistant Professor, Department of Civil Engineering, Faculty of Civil and Earth Resources Engineering, Central Tehran Branch, Islamic Azad University, Tehran, Iran
چکیده English

Global warming, weather changes and the gradual destruction of the environment are caused by the emission of greenhouse gases, including carbon dioxide. In the past, many studies have been conducted on the contribution of the construction industry in the emission of greenhouse gases, and most of these studies were related to the operation phase, and so far, many studies have not been presented to evaluate the amount of carbon dioxide emissions during the construction phase in Iran. In this research, the goal is to evaluate the amount of carbon dioxide produced by the construction of buildings with concrete, steel and LSF frames. In order to fulfill this goal, three residential buildings have been studied in Gilan province, the coastal strip of the Caspian Sea. The amount of materials used in each section was obtained through quantity estimating with Microsoft Excel. The amount of carbon of different materials per unit weight of consumed materials was extracted from a reliable source. Based on the calculations, the amount of carbon produced in the construction phase for three buildings with concrete, steel and LSF frames per structural material was 335.46, 186.89 and 134.29 kgCO2/m2, respectively. The comparison shows that the amount of carbon produced for the construction of an LSF structure is less than that of concrete and steel structures. Also, the effect of replacing different types of roofs on the amount of carbon reduction for concrete and steel buildings was studied. The amount of carbon produced in the construction of a concrete structure with a pre-stressed beam roof compared to a block beam roof is about 27% reduction, and the amount of carbon produced in the construction of a steel structure with a composite roof compared to a steel deck roof is about 5% reduction.

کلیدواژه‌ها English

Carbon dioxide emission
Construction
Concrete frame
Steel frame
LSF frame
Roof types
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  • تاریخ دریافت 05 مرداد 1403
  • تاریخ بازنگری 12 آذر 1403
  • تاریخ پذیرش 14 اسفند 1403