Bearing capacity of shallow footing on compacted filling dune sand over reinforced gypseous soil

Joint Authors

al-Busuda, Bushra Sahal
Salman, Rasul

Source

Journal of Engineering

Issue

Vol. 19, Issue 5 (31 May. 2013), pp.532-542, 11 p.

Publisher

University of Baghdad College of Engineering

Publication Date

2013-05-31

Country of Publication

Iraq

No. of Pages

11

Main Subjects

Civil Engineering

Topics

Abstract AR

إن وجود هذه الترب بنسب عالية في بعض المواقع قد تسبب عدة مشاكل معقدة للمباني والمشاريع الإستراتيجية بسبب ذوبان الجبس بتأثير جريان الماء خلال كتلة التربة.

في هذا البحث اقترحت تقنية جديدة شملت فحص تبديل التربة و التسليح بمواد نسيجية و مشبكات لتحسين تصرف التربة من خلال موديل مختبري صنع محليا لهذا الغرض.

سلسلة من الفحوصات لنماذج جافة وأخرى مغمورة في صندوق حديدي أبعاده مغمورة في صندوق حديدي أبعاد (500*600*600)ملم و أساس مربع الشكل بأبعاد (100*100) ملم وضع في وسط نموذج التربة المفروشة في صندوق الفحص.

بينت النتائج أن أفضل عمق مؤثر لتبديل التربة الجبسية بكثبان رملية هو العمق الذي يساوي عرض الأساس بعد استخدام المواد النسيجية والمشبكات وقد لوحظ أن Collapse Settlement Reduction) Factor..

(CSRF)) تزداد الى ( 72 %) عندما نستخدم طبقتين من جيوكرد وطبقة من الجيوتكستيل تحت عمق تبديل يساوي عرض الأساس.

و أن قابلية التحمل تزداد بنسبة (1.5-2.0) في حالة التحميل المركزي و 3.0) -2.5) في حالة التحميل اللامركزي.

Abstract EN

Existence of these soils, sometimes with high gypsum content, caused difficult problems to the buildings and strategic projects due to dissolution and leaching of gypsum by the action of water flow through soil mass.

In this research, a new technique is adopted to investigate the performance of replacement and geosynthetic reinforcement materials to improve the gypseous soil behavior through experimential set up manufactured loaclally specially for this work.

A series of tests were carried out using steel container (600 * 600 * 500) mm.

A square footing (100 * 100) mm was placed at the center of the top surface of the bed soil.

The results showed that the most effective thickness for the dune sand layer with geotextile at the interface, within the tested range, was found to be almost equal to the width of foundation.

Therefore, under this depth, the soil was reinforced with geogrid and geotextile.

It can be shown that (Collapse Settlement Reduction Factor) increases to (72 %) when using two layers of geogrid and one layer of geotextile under depth of replacement equal to the width of footing.

In addition, the results showed that the bearing capacity increases to (1.5-2.0) time under concentric loads and (2.5-3) under eccentric loads after replacement and reinforcement of gypseous soil.

American Psychological Association (APA)

al-Busuda, Bushra Sahal& Salman, Rasul. 2013. Bearing capacity of shallow footing on compacted filling dune sand over reinforced gypseous soil. Journal of Engineering،Vol. 19, no. 5, pp.532-542.
https://search.emarefa.net/detail/BIM-336009

Modern Language Association (MLA)

al-Busuda, Bushra Sahal& Salman, Rasul. Bearing capacity of shallow footing on compacted filling dune sand over reinforced gypseous soil. Journal of Engineering Vol. 19, no. 5 (May 2013), pp.532-542.
https://search.emarefa.net/detail/BIM-336009

American Medical Association (AMA)

al-Busuda, Bushra Sahal& Salman, Rasul. Bearing capacity of shallow footing on compacted filling dune sand over reinforced gypseous soil. Journal of Engineering. 2013. Vol. 19, no. 5, pp.532-542.
https://search.emarefa.net/detail/BIM-336009

Data Type

Journal Articles

Language

English

Notes

Includes appendix : p. 538-542

Record ID

BIM-336009