节段预制混凝土板加筋土挡土墙有限元分析

IF 1 Q4 ENGINEERING, CIVIL

Jordan Journal of Civil Engineering Pub Date : 2023-10-01 DOI:10.14525/jjce.v17i4.03

Anand M. Hulagabali

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引用次数: 0

摘要

在民用基础设施项目中，加筋土挡土墙作为典型钢筋混凝土墙和其他支撑回填结构的替代设计结构被越来越多地使用。本研究的目的是使用二维有限元工具PLAXIS对二维节段预制混凝土板(SPCP)墙进行建模和分析，并分析墙在钢筋类型和附加荷载影响下的行为。本文还研究了加固类型和附加荷载的影响，以及不同支护体系对SPCP墙变形和地表沉降的影响。用带肋钢筋、聚对苯二甲酸乙二醇酯(PET)土工格栅和密度聚乙烯(HDPE)土工格栅来评估加固类型的墙体变形。与PET和HDPE土工格栅加固相比，肋钢加固的地面沉降和墙体变形分别减少了14%和25%。随着填土堆填量的增加，围岩变形和地表沉降显著增加150%。为减小软土地基上墙体的变形，考虑采用桩基础和骨料墩作为支护方案。桩基础加筋砌块作为支护体系时，墙体变形和沉降比骨料墩支护体系小60%。关键词:节段预制混凝土面板，PLAXIS，配筋类型，骨料墩，桩基础，墙体变形

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Finite Element Analysis of Segmental Precast Concrete Panel Reinforced Earth Retaining Wall

Reinforced earth retaining walls are being utilized more frequently in civil infrastructure projects as an alternate design structure to typical reinforced concrete walls and other structures for supporting backfill. The objective of the present study is to model and analyze a 2-dimensional Segmental Precast Concrete Panel (SPCP) wall using the 2-dimensional finite-element tool PLAXIS and analyze the behaviour of the wall concerning the effect of reinforcement type and surcharge loads. The present work also includes the investigations of the effects of reinforcement type and surcharge loads, as well as the influence of different supporting systems on the deformations and ground-surface settlements of the SPCP wall. Ribbed steel reinforcements, Polyethylene Terephthalate (PET) geogrids and Density Polyethylene (HDPE) geogrids are used to evaluate the wall deformations for reinforcement types. For ribbed-steel reinforcement, ground settlements and wall deformations are 14% and 25% less compared to those of PET and HDPE geogrid reinforcements, respectively. With the increase in surcharge on the backfill soil, wall deformations and surface-ground settlements are increased significantly by 150%. To decrease the deformations of walls resting on soft soil, pile foundations and aggregate piers are considered as supporting solutions. In the case of reinforced blocks with pile foundation as supporting systems, the wall deformations and settlement are 60% lesser than for aggregate pier supporting systems. KEYWORDS: Segmental precast concrete panel, PLAXIS, Reinforcement type, Aggregate pier, Pile Foundation, Wall deformation

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来源期刊

Jordan Journal of Civil Engineering ENGINEERING, CIVIL-

CiteScore

2.10

自引率

27.30%

发文量

期刊介绍： I am very pleased and honored to be appointed as an Editor-in-Chief of the Jordan Journal of Civil Engineering which enjoys an excellent reputation, both locally and internationally. Since development is the essence of life, I hope to continue developing this distinguished Journal, building on the effort of all the Editors-in-Chief and Editorial Board Members as well as Advisory Boards of the Journal since its establishment about a decade ago. I will do my best to focus on publishing high quality diverse articles and move forward in the indexing issue of the Journal.