Numerical analysis of slab foundations on reactive soils incorporating sand cushions

Shams, Mohamed A.; Shahin, Mohamed A.; Ismail, M.A.

doi:10.1016/j.compgeo.2019.04.026

Cited by 14 publications

(10 citation statements)

References 9 publications

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“…It is meant for multiple users and therefore has a good interface, designed systematically, thoroughly tested and implemented carefully. Software is most often very complex and too large for one person to create and develop single handedly [4,15,18]. For example, given a software that records names and addresses in a database.…”

Section: Results:introductionmentioning

confidence: 99%

Section: Analysis and Design Of Reinforcement Concretementioning

confidence: 99%

“…Software comprises the electronic instructions that govern the computer's functions [8,18]. A program consists of sequences of instructions to a computer, where it is written to perform specified task on a computer [18,4]. Unlike a program where a program is developed by individuals for their own personal use, software is much more complex.…”

Section: Analysis and Design Of Reinforcement Concretementioning

confidence: 99%

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Computer Programming for Analysis and Design of Edge Supported Rectangular Two-Way Solid Slab by Es En 1992-1-1:2015

Chawaka¹

2022

Preprint

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This study’s main target was to analyze and design rectangular edges supported in two ways 1 solid slabs by using ES EN 1992-1-1:2015. Slab design is often carried out either manually or with 2 the use of design and analytic software. The researcher sees that some software cannot accept some 3 countries’ standard codes. For example, currently in Ethiopia analysis and design of two-way solid 4 the slab is done using a readily available Excel sheet template. But working with this might have many 5 problems, firstly the structure that is already analyzed by SAP or SAFE or any other international 6 a software application that uses international codes but which cannot design structure using ES EN 7 1992; for instant euro codes and designed by excel sheet can create failure and uneconomical analysis 8 and design result. In this paper, the slab is designed and analyzed based on the chosen concrete grade, 9 chosen reinforcement bar diameter, chosen steel grade for design and analysis of slabs calculations 10 like load, moment, shear, and deflection checking using the moment coefficient method for analysis 11 and design and Microsoft Visual Basic 2010 for coding. All input values are given by the International 12 Standard units are also used to represent output values. Using manual calculations delays time 13 and mostly the result is not correct. But using this Computer program can increase computation 14 accuracy and save time. The procedure the researcher followed is, first the manual calculation has 15 been done and then SADSE2021 has been done. The result is that both are 99.9 percent identical, and 16 the disadvantage of this method is that it cannot be used to determine the detailed drawing.

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Section: Results:introductionmentioning

confidence: 99%

Section: Analysis and Design Of Reinforcement Concretementioning

confidence: 99%

Section: Analysis and Design Of Reinforcement Concretementioning

confidence: 99%

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Computer Programming for Analysis and Design of Edge Supported Rectangular Two-Way Solid Slab by Es En 1992-1-1:2015

Chawaka¹

2022

Preprint

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“…The findings of research community all around the world offered the civil engineering with several remedial measures to reduce the impact of the damages caused by expansive soil deposits [3][4][5][6][7][8]. Various remedial measures and foundation techniques were developed like replacement of soil [9,10], placing adequate surcharge [9], controlling the moisture variations [11], altering the design of superstructure [2,12], physical and chemical modifications of soil [13][14][15][16][17][18][19][20][21][22], using a sand cushion [23][24][25] & Cohesive Non-Swelling (CNS) material cushion [3,[26][27][28], using under-reamed piles [29,30], piled raft [31,32] & recently granular anchor piles [33][34][35] etc.…”

Section: Introductionmentioning

confidence: 99%

Study on use of chemically stabilized native expansive soil as cohesive non-swelling material

Kethavathu

Avineni

Chigurupati

2022

IOP Conf. Ser.: Earth Environ. Sci.

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The growing infrastructural need requires extensive construction activities in various parts of the world. The problems posed by the expansive soils have caught the attention of the academia and industry at several work sites. Several remedies were suggested by various researchers like replacement of soils, physical, hydraulic & chemical modification of the local problematic soils, inclusion of cushion materials and other reinforcing materials etc. Among the various methods, inclusion of cushion materials under the foundations seemed to be economical and simple. Availability of cohesive non-swelling (CNS) materials to be used as a cushion at some work sites could not be very easy. This study utilizes the local expansive material stabilized with chemical and industrial wastes to prepare a suitable CNS material. Model tank studies with varied thickness of the CNS cushion prepared from this study was placed on the expansive soil were performed to find the efficacy of the CNS material in arresting the heave of the expansive soil. Four cycles of wetting and drying was carried out to check the stability of CNS materials under continuous swelling and shrinking. Results obtained from the model test results indicate that the CNS material prepared from the native expansive soil seem to be an effective CNS material that arrests considerable amount of heave when the thickness of the native CNS material was half of the soil thickness.

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“…Qualitative and dependable forecasting of stress-strain state of ground bases is urgent problem of modern urban construction. Real soil properties, layered foundation irregularities in depth which influence on the processes in ground bases that occur under external loads, should be best reflected in the used analytical models [1][2][3][4][5]. The development of reliable computational theory of layered ground bases becomes a hot topic at the present time when necessity of the high-rise buildings construction with slab foundations [6][7][8][9][10] under adverse engineering-geological conditions in modern large cities can be observed.…”

Section: Introductionmentioning

confidence: 99%

Experimental studies of the various soils bedding influence on the stress-strain state of a layered subsoil base of the slab foundation

Siraziev

Сергеев

2021

E3S Web Conf.

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The purpose of the study is to reveal the effect of the stress-strain state of the three-layer soil base of the slab foundation with a rigid underlying layer, which is heterogeneous along the depth of the ground. The main results of the study are obtaining relative deformations in the soil massif and the settlement of ground values of each layer. The results of experimental studies are obtained in the form of a deformation pattern of a layered base, distribution graphs of compressive stresses in the soil in depth and in a horizontal plane. The significance of the results achieved for the construction area is to establish the mutual influence of various soils on the stress-strain state of the laminate basement of the slab foundation. The presence of a dense top layer in a laminate base significantly increases its distribution ability. The stress distribution is proportional to the load-carrying capacity of the individual base layers. On the boundary between the layers, a jump in the compressive stresses may occur, which indicates the presence of shear deformations in the contact layer.

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Numerical analysis of slab foundations on reactive soils incorporating sand cushions

Cited by 14 publications

References 9 publications

Computer Programming for Analysis and Design of Edge Supported Rectangular Two-Way Solid Slab by Es En 1992-1-1:2015

Computer Programming for Analysis and Design of Edge Supported Rectangular Two-Way Solid Slab by Es En 1992-1-1:2015

Study on use of chemically stabilized native expansive soil as cohesive non-swelling material

Experimental studies of the various soils bedding influence on the stress-strain state of a layered subsoil base of the slab foundation

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