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Register a new userA contrbution in monitoring the horizontal and vertical displacements of railway devoted for heavy cranes
مساهمة في مراقبة الانزياحات الافقية و الشاقولية للسكك الحديدية الخاصة بالروافع الثقيلة
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Tishreen University ورقة بحثية
Publication date
2015
fields
topography
and research's language is
العربية
Authors
فايز ديب( باحث )
Created by
Shamra Editor
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يعرض هذا البحث مراقبة الانزياحات الافقية و الشاقولية لسكك الحديد التي تسير عليها الروافع الثقيلة باستخدام التقنيات المساحية و ذلك بهدف تحديد استقرار السكة و سلامة تشغيل الروافع عليها. لكي تعمل الروافع الثقيلة على السكة بأمان يجب أن تكون السكة بشكل أفقي تماما ( يسمح بخطأ صغير من مرتبة المليمترات تحدده الشروط الفنية لعمل الروافع). كما يجب أن تحافط السكة على تباعدها الافقي لتسهيل حركة الروافع عليها. تتضمن مراقبة الهبوطات في السكة حساب الانزياحات الشاقولية النسبية لمجموعة نقاط المراقبة الموزعة على طول السكة في حالتين : الحالة الساكنة و الحالة الديناميكية. تم تحديد الانزياحات الشاقولية باستخدام التسوية الدقيقة المنفذة باستخدام نيفو رقمي عالي الدقة. و قد تم ربط قياسات التسوية الدقيقة لنقاط المراقبة مع نقاط الاستناد الثابتة المزروعة في المنطقة المحيطة بالسكة من أجل دراسات لاحقة. تم في هذا البحث استخدام طريقة المستقيم الثابت في ايجاد الانزياحات الافقية للسكة باستخدام المساطر الرقمية و جهاز المحطة المتكاملة مع عاكس مثبت بشكل قسري على قضيبي السكة. تم تنفيذ ذلك بقياس زوايا الانحراف الصغرة لنقاط المراقبة الموزعة على محور قضيب السكة. لقد بين هذا البحث كفاءة و دقة طريقة المستقيم الثابت في ايجاد الانزياحات الافقية لمحور للسكة الحديدية.
This paper presents the monitoring horizontal and vertical displacements of railway which heavy cranes run on using special geodetic techniques for the purpose provaiding rialway stability and safe working cranes on it. To quaranty that heavy cranes work safly, a rialway should be just horizontal– a small error of milimeters leveling is allowed according to working conditions for cranes. A rialway shoud also maintain its spaces to facilitate the crane motion on it. Monitoring railway vertical displacements involve measuring the relative vertical displacements of target points that are distributed along the railway in two cases: static and dynamic. vertical displacements determined by precise leveling which are performed using digital high accuracy level. The precise leveling measurments of target points have been connected to stable benchmark that are located in surrounding terrain of railway for purpose of further studies. In this paper the alignment method was used to monitoring the railway horizontal displacements using digital rulers and total station provided by a prism fixed forcely on the railway. This is done by measuring the small bias angles of the targat points which are distributed along the railway. This research has illustrated the efficiency of alignment method in order to calculate the horizontal displacements of railway axis.
References used
Russell C. Brinker, Roy Minick, The Surveying Hand book, Chapman & Hall, New York, USA. 1995, 750
Schroedel Joseph, Structural Deformation Surveying. US Army Corps of Engineering , CEVW-EE, Washington, USA, 2002, 292
Layyarini T. Geodezyjne Pomiary Przemieszczen Budowli i ich Otoczenia, Warszawa, Poland, 1977, 638
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