Print Email Facebook Twitter Analysis of a reinforcement detail in a bar reinforced soil-mix wall Title Analysis of a reinforcement detail in a bar reinforced soil-mix wall: An experimental and numerical approach Author Dik, Inge (TU Delft Civil Engineering and Geosciences; TU Delft Engineering Structures) Contributor Hordijk, D.A. (mentor) Braam, C.R. (mentor) Hoogenboom, P.C.J. (mentor) Meijdam, Jeroen (mentor) Van Bezooijen, Joost (mentor) Degree granting institution Delft University of Technology Programme Civil Engineering | Structural Engineering | Concrete Structures Date 2017-09-20 Abstract Soil-mix walls are subsoil walls, which are constructed by in situ mixing of soilwith cement and water. The technique was initially used as a ground improvementtechnique and is now being developed as construction method for wallswith a structural purpose. Currently these walls are reinforced with large steelprofiles, which requires a large quantity of steel. Replacing the profiles withbar reinforcement might lead to a decrease in required material quantity andthus a reduction of material costs.There are multiple aspects which influence the possibilities and limitationsof bar reinforced soil-mix walls. These include predictability of the materialquality, durability and cooperation between soil-mix and the reinforcement.The aim of this project was to contribute to this research by analysing oneof the influential aspects. The specific goal of this research project was toanalyse the capacity of a reinforcement detail within a soil-mix wall and definethe governing failure mechanism. The research combined an experimental andnumerical approach to the subject.The critical detail was chosen based on the Huybrechts et al. (2016), Ganneet al. (2010), Dörendahl et al. (2004) and contact with soil-mix experts. Tomodel this detail in a finite element model, in 2D and 3D, material parameterswere derived from Denies et al. (2012a), Denies et al. (2014), Denies et al.(2015a) and performed physical tests. The 2D models represented the mostcritical sections of the detail based on the theoretical stress distribution. Thegeometrical parameters of the reinforcement design were varified in the modelsto provide insight in the influence of the design on the capacity.The model results were used to define an preliminary set of design guidelinesfor the reinforcement cage, related to the depth of the wall. Since onlythe capacity of the detail is considered, these guidelines are not suficient fora complete design of a bar reinforced soil-mix wall and can only serve as aninitial indication.In conclusion, the reinforcement detail is most sensitive to failure due to verticalsplitting and has suficient capacity for acceptable wall depths. As statedbefore there are multiple aspects relevant to the feasibility of bar reinforcedsoil-mix walls. The predictability of the material quality, the bond with thereinforcement and the durability of the soil-mix strongly influence the finalcapacity and behaviour of the wall. Therefore it is important to perform furtherresearch on these, and other, aspects to conclude on the total structuralintegrity of an entire bar reinforced soil-mix wall. Subject Soil-mixReinforcementFEM To reference this document use: http://resolver.tudelft.nl/uuid:c54afaaf-1bb2-49d8-bcab-a01fd061c5b8 Part of collection Student theses Document type master thesis Rights © 2017 Inge Dik Files PDF FinalThesis.pdf 39.07 MB Close viewer /islandora/object/uuid:c54afaaf-1bb2-49d8-bcab-a01fd061c5b8/datastream/OBJ/view