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280713

Assessment of the Efficiency of Rigid Inclusions as a Settlement Control System – Case Study

Article

Last updated: 30 Dec 2024

Subjects

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Tags

Environmental Geotechnics

Abstract

This paper presents a summary of the research work conducted to assess the efficiency of rigid inclusions (RI) as a settlement control system for foundations on soft marine soils (Deltaic formations). The study was conducted at the proposed construction site of a new university located in the coastal city of New Mansoura, North Delta. The RI system comprises unreinforced concrete cast in place displacement piles overlain by a layer of crushed stone-sand mix acting as a load transfer platform (LTP) under the building's footings. To verify the proposed RI system, a specialized contractor conducted full scale trial loading test. The evaluation methodology comprises detailed geotechnical investigation, evaluation of the results of the trial test performed by the specialized contractor, advanced 3D finite element analyses were performed to simulate the trial test (short-term condition) as well as investigation of the long-term behavior of the proposed system (drained condition). The results of analyses have shown that the construction of the rigid inclusion significantly reduced the predicted settlements of the foundation compared to un-piled footing. Reduction in settlements in the undrained and drained conditions are about 30% to 37%, respectively compared to un-piled footing reflecting the efficiency of RI system in controlling foundation settlements. In the undrained condition, the percentage of the load transferred to the rigid inclusions are predicted to be about 63% and 50% for the working and ultimate loading conditions, respectively. While the counterpart percentages in drained condition, are about 76% and 60%.  

DOI

10.21608/asge.2022.280713

Keywords

Rigid inclusions, Full-scale, Loading test, Elasto-plastic analysis, Drained and undrained, soft soil

Volume

06

Article Issue

02

Related Issue

38152

Issue Date

2022-05-01

Receive Date

2023-01-16

Publish Date

2022-05-01

Page Start

52

Page End

67

Print ISSN

2785-9509

Online ISSN

2812-5142

Link

https://asge.journals.ekb.eg/article_280713.html

Detail API

https://asge.journals.ekb.eg/service?article_code=280713

Order

5

Type

Original Article

Type Code

2,140

Publication Type

Journal

Publication Title

International Journal of Advances in Structural and Geotechnical Engineering

Publication Link

https://asge.journals.ekb.eg/

MainTitle

Assessment of the Efficiency of Rigid Inclusions as a Settlement Control System – Case Study

Details

Type

Article

Created At

30 Dec 2024