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A 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

2018   0   26   0 ( 0 )
 Publication date 2015
  fields topography
and research's language is العربية
 Created by Shamra Editor




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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.


Artificial intelligence review:
Research summary
يقدم هذا البحث دراسة حول مراقبة الانزياحات الأفقية والشاقولية لسكك الحديد التي تسير عليها الروافع الثقيلة باستخدام تقنيات مساحية دقيقة. الهدف من هذه الدراسة هو ضمان استقرار السكة وسلامة تشغيل الروافع عليها. تتضمن الدراسة قياس الانزياحات الشاقولية باستخدام التسوية الدقيقة والنيفو الرقمي عالي الدقة، بالإضافة إلى قياس الانزياحات الأفقية باستخدام طريقة المستقيم الثابت. تم توزيع نقاط المراقبة على طول السكة بانتظام، وتم إجراء القياسات في حالتين: الحالة الساكنة والحالة الديناميكية. أظهرت النتائج وجود انزياحات شاقولية كبيرة في بداية السكة، مما يستدعي إصلاحها لضمان سلامة تشغيل الروافع. كما أظهرت الدراسة أن معظم الانزياحات الأفقية كانت ضمن الحدود المسموحة، مما يدل على استقرار السكة تحت تأثير الحمولات الديناميكية. توصي الدراسة بإجراء قياسات دورية للتأكد من استقرار السكة وسلامة تشغيل الروافع.
Critical review
تعتبر هذه الدراسة مهمة للغاية في مجال الهندسة الطبوغرافية، حيث تقدم حلولاً عملية لمراقبة استقرار وسلامة سكك الحديد التي تسير عليها الروافع الثقيلة. ومع ذلك، يمكن تحسين الدراسة من خلال تضمين تحليل أكثر تفصيلاً للعوامل التي قد تؤثر على دقة القياسات، مثل الظروف الجوية والتغيرات في التربة. كما يمكن توسيع نطاق الدراسة لتشمل أنواع أخرى من المنشآت الهندسية الطولانية. بالإضافة إلى ذلك، يمكن تحسين العرض البياني للنتائج لتسهيل فهمها من قبل القراء غير المتخصصين.
Questions related to the research
  1. ما هو الهدف الرئيسي من هذه الدراسة؟

    الهدف الرئيسي هو مراقبة الانزياحات الأفقية والشاقولية لسكك الحديد التي تسير عليها الروافع الثقيلة لضمان استقرار السكة وسلامة تشغيل الروافع.

  2. ما هي الطرق المستخدمة لقياس الانزياحات الشاقولية؟

    تم استخدام التسوية الدقيقة والنيفو الرقمي عالي الدقة لقياس الانزياحات الشاقولية.

  3. ما هي النتائج الرئيسية التي توصلت إليها الدراسة؟

    أظهرت النتائج وجود انزياحات شاقولية كبيرة في بداية السكة، مما يستدعي إصلاحها لضمان سلامة تشغيل الروافع. كما أظهرت أن معظم الانزياحات الأفقية كانت ضمن الحدود المسموحة.

  4. ما هي التوصيات التي قدمتها الدراسة؟

    توصي الدراسة بإجراء قياسات دورية للانزياحات الشاقولية للسكة الحديدية للتأكد من استقرارها وسلامة تشغيل الروافع.


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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