Forecasting bearing capacity of the mixed soil using artificial neural networking

Abstract. The bearing capacity of soil changes owing to the mechanical properties of the soil and influences on structural stability. In most of the geotechnical engineering projects, there are several soil mechanic experiments, they need interpretation before application. The mechanical properties of soil interaction make complex predict of soil bearing capacity. However, to enhancement safety of construction project need to the interpretation of soil experiments and design results for proper application in a geotechnical engineering project. In this study, artificial neural networking is proposed for the evaluation of the mixed soil characteristics to forecast the safe bearing capacity of soil because of the mechanical properties of the soil interaction phenomenon. The results reveal for prediction of the safe bearing capacity, the R2 and RMSE for all mechanical properties effects on safe bearing capacity are 0.98 and 0.02, these values can provide a suitable accuracy for prediction safe bearing capacity of the mixed soil. The higher inaccuracy obtained when only the influence of single mechanical property on the mixed soil considered in prediction of the safe bearing capacity. This study supports the enhancement of geotechnical engineering design quality through prediction safe bearing capacity from characterized mechanical properties of the soil

Evaluation of seismic mitigation of embankment model

Conducting experiment on embankment model by shaking table could be an accurate method to evaluate the behavior of embankment or any structures under seismic loading. In this research work, in order to assess the function of seismic force and accurate placement of dense zone in the embankment model, the results of three experiments have been considered. To evaluate the reaction of the embankment model, it was measured the stress in the system and photographs were taken. The results of three experiments indicated that suitable arrangement of dense zone is the main factor at the play in embankment stability, and in predicting the possibility of embankment behavior

Natural minerals mixture for enhancing concrete compressive strength

The construction material quality is required to be improved in order to enhancing structure stability, optimizing construction cost and quality. The kaolin and bentonite have been mixed in equal quantity and treated by heat for 1 hour under 600 oC, 800 oC and 1000 oC to create new minerals under high temperature condition to introduce an acceptable concrete additive for achieving concrete compressive strength in early age.To study micro properties of additive-cement mixture, X-ray and FESEM experiments have been used. The results indicate that acceptable proportion of unheated kaolin-bentonite is improving the concrete compressive response. But if kaolin-bentonite mixture treated by heat under 800 oC and in quantity of 12 % has been used in concrete mixed design, then the concrete compressive strength of 7 days shows the best result. The result is due to the development of new minerals under high temperature condition in mineral mixture and also kaolin-bentonite additive change cement past crystal and lead to enhancement of nano structural cement bonding

The multilayered soil-structure seismic interaction and structure vibration mechanism

The morphology of subsoil influences to soil-structure interaction and it makes complex to predict seismic structural stability. The structural elements seismic response associate to soil-structure interaction is required expansive investigation with considering soil morphology. The main objective of the present study is to identify influence of near-fault ground motion mechanism reach to the structure element for evaluate strain energy modification due to the morphology of subsoil and developing load and displacement on the structural element with built-up synthetic subsoil for soil-structure seismic interaction design. The results of the numerical simulation revealed that the (i) displacement mechanism and applied seismic load of the structural element, (ii) strain energy modification and (iii) the structural vibration patterns of continuous beam in a timber frame have been changed in associated to the soil foundation characteristics. The innovation of this study is the soil-structure interaction, the soil layers interaction, near-fault ground motion and mechanical properties of the soil at different location of the soil foundation are fundamental parameters to control continuous timber beam seismic design

The Timber Floor Seismic Design by Means Finite Element Method

To improve accuracy results of numerical analysis, the finite element method software needs to use appropriately with considering accurate input data. Among several factors in realistic and economical seismic structural design, the damping ratio needs to be investigated as a calculated and input data in numerical analysis. In the present study, the effect of accurate damping ratio on timber floor seismic design has numerically been examined. The 6 first modes from a series of eigenvalues were selected to calculate natural frequency and damping ratio. The seismic results with and without applied calculated damping ratio were compared. The strain, displacement, and seismic load response are interpreted. The numerical analysis results were showed that the higher nonlinear displacement occurs in timber floor when the damping ratio was modified in numerical modeling. It was found that the floor seismic design is more critical compared to a column in select accurate damping ratio. The damping ratio has highly effect on timber floor seismic design

Economical considerations in the development of construction materials – a review

Design and manufacturing of construction materials have been investigated. The aim is to identify methods to produce sustainable economic materials used for soil foundation and concrete structure. Several additives have been analyzed in order to develop acceptable economical construction materials. They are expected to support soil foundation and concrete materials design for sustainable development. A comparative study has been made based on the available theoretical and experimental results reported in literature. It has also been revealed that design of appropriate steel fiber optimizes shear morphology, increases applied force, minimizes deflection, improves mechanical performances and reduces time to failure of concrete beam. Also, nanotechnology supported and enhanced compressive strength of concrete has been explained. Soil mixing to support embankment seismic design has been discussed so as to introduce suitable methods for soil foundation enhancement

Bearing capacity of mixed soil model

The main objective of this research is the improvement of red soil by the addition of construction materials. This method could provide a scientific way to create a soil foundation with sufficient stability against geo-technical problems or instabilities. Laboratory tests have been conducted to characterize the behavior of red soil when amended with different types of gravels, soils and sand under compacted conditions with Optimum Moisture Content (OMC). Safe bearing capacity of all models have been calculated to identify the best and worst soil mixed model

Tsunami numerical modeling and mitigation

The numerical modeling and wave theory are used in tsunami mitigation analysis. It is assumed seaforest is simulating offshore structure submitted to wave loads. The sea forest acts simulate break waves inconservation of coastal territory and facility installed over there. The result reveal that mathematical modelingand numerical simulation can be used to understand tsunami ability in design and urban construction, theresearch indicates reduction of water deep by sea forest resulted in reducing geometry and all wave ability

Natural minerals mixture for enhancing concrete compressive strength

The construction material quality is required to be improved in order to enhancing structure stability, optimizing construction cost and quality. The kaolin and bentonite have been mixed in equal quantity and treated by heat for 1 hour under 600 oC, 800 oC and 1000 oC to create new minerals under high temperature condition to introduce an acceptable concrete additive for achieving concrete compressive strength in early age. To study micro properties of additive-cement mixture, X-ray and FESEM experiments have been used. The results indicate that acceptable proportion of unheated kaolin-bentonite is improving the concrete compressive response. But if kaolin-bentonite mixture treated by heat under 800 oC and in quantity of 12 % has been used in concrete mixed design, then the concrete compressive strength of 7 days shows the best result. The result is due to the development of new minerals under high temperature condition in mineral mixture and also kaolin-bentonite additive change cement past crystal and lead to enhancement of nano structural cement bonding. &nbsp