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Article
A Correlation Between Dynamic and Static Pile Load Test Results
مقارنة بين نتائج فحص الركائز الستاتيكي والديناميكي

Authors: Kais T. Shlash --- Hussein H. Hussein
Journal: Engineering and Technology Journal مجلة الهندسة والتكنولوجيا ISSN: 16816900 24120758 Year: 2009 Volume: 27 Issue: 15 Pages: 2730-2737
Publisher: University of Technology الجامعة التكنولوجية

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Abstract

Three selected bored piles executed at Basrah area were tested both bystatic and dynamic pile test procedures in order to correlate their results when evaluating the piles capacities. The correlation showed that the results are close to each other in terms of load- settlement relations, but on the other hand, end bearing capacity and skin friction values obtained by the dynamics tests are far from the real behavior of piles. The reason may be due to lack of experience ofcrew that supervises the dynamic tests. They have to practice more dynamic tests and should build accumulated knowledge about the dynamic method of testing piles. The time is still early for the dynamic tests to replace the classical static test when evaluating piles capacities.

تم فحص عدد من الركائز المختارة بطريقتي التحميل الستاتيكي التقليدية والطريقة الديناميكية في محاولة لربط نتائج الفحص بالطريقتين و دراسة امكانية الاعتماد على فحص الركائز بالطريقة الديناميكية دون اللجوء الى فحص التحميل الستاتيكي المعمول به حاليا. وجد من خلال المقارنة بين نتائج الفحص بالطريقتين ان هناك تقارب جيد بين الطريقتين من حيث شكل العلاقة بين الحمل و الهبوط و لكن قيم مقاومة الاحتكاك و مقاومة بهاية الركيزة التي تسجلها الطريقة الديناميكية تختلف كثيرا عن تلك المحسوبة على ضوء خواص التربة المنفذة خلالها الركائز. قد يكون السبب في ذلك هو عدم كفاءة الفاحصين في تنفيذ الفحص و خاصة موضوع ادخال بعض المتغيرات الواجب تغذيتها الى برنامج الفحص الديناميكي وعليه يحتاج الفاحصون بالطريقة الديناميكية الىممارسة وجهد اكبر لغرض الالمام قبل اعتماد الطريقة الديناميكية في تقرير تحمل الركائز. على ضوء النتائج التي تم الحصول عليها يمكن القول بان احلال الفحص الديناميكي بدل الفحص الستاتيكي التقليدي امر يحتاج الى مزيد من الخبرة و الدراسة قبل اعتماده في العراق


Article
A Comparison Between Static and Dynamic Load Tests on Bored Piles

Author: Makki K .Al-Recaby
Journal: Engineering and Technology Journal مجلة الهندسة والتكنولوجيا ISSN: 16816900 24120758 Year: 2016 Volume: 34 Issue: 15 Part (A) Engineering Pages: 2993-3004
Publisher: University of Technology الجامعة التكنولوجية

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Abstract

Pilesr are both statically and dynami cally tried to acquire the limit and to check outline. The two sorts will give comes about that may differ in light of the technique utilized as a part of leading the test. It is thusly, important to think about the aftereffects of a static load test with dynamic load test. Numerous comparison studies are directed around the world, yet the vast majority of them are for displacement driven pile. In this way, the consequences of the test are looked at for substitution-exhausted piles. The piles are tested statically before dynamic test. The test results show that a not too bad comprehension was expert between both the tests with in addition to less 7mm at design load regarding settlement. Moderately, the settlement foreseen in powerful load test is littler diverged from static load test. Regarding absolute bearing limit, Davisson's technique gives the insignificant outrageous load regard diverged from various strategies. The Davisson's strategy is utilized to analyze the outcomes since it is more moderate. The examination shows that the piles are inside 15% in regard as far as possible traversed Davisson's strategy. Since the static test was coordinated before unique test, the limit got from dynamic test is higher because of the pile experienced flexible pressure amid static load test and furthermore because of soil setup.

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