The effect of nonlinearity of acceleration histories to timber beam seismic response

Advances in Civil Engineering

Dong

Yin

2019

Self Cite

This paper presents the numerical results of concrete footing-soil foundation seismic interaction mechanism. The concrete footing has been made with two different shapes, but with the equal volume of concrete material. The concrete footing-soil foundation has been analyzed using nonlinear finite elements, with the fixed-base state. The simulated near-fault ground motions have been applied to the concrete footing-soil foundation. The problem has been formulated based on the settlement controlled analysis. The local geotechnical conditions of all configurations have been analyzed. The numerical analysis results indicate that the shape of a concrete footing alters seismic response, revises inertial interaction, enhances damping ratio, improves load carry capacity, modifies cyclic differential settlement, revises failure patterns, minimizes nonlinear deformation, and changes cyclic strain energy dissipation. The novelty of this research work is the strain energy has more been dissipated with artistic concrete footing design.

Section: Problem Definitionmentioning

confidence: 99%

The Effect of Concrete Footing Shape in Differential Settlement: A Seismic Design

Advances in Civil Engineering

Dong

Yin

2019

Self Cite

“…The mechanical properties, the strength and the bearing capacity of soils are very important in soil tension and compressive response during the soil is subjected to the loading in a different direction and it leads to developing displacement and deformation of the soil [6][7]. In other words, strain energy and damage have been investigated to solve several engineering problems and strain energy needs to be investigated further [8][9][10][11][12][13][14][15][16]. There are several types of research on flexural load applied on structure and materials [17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

The multilayered soil-structure seismic interaction and structure vibration mechanism

Frattura Ed Integrità Strutturale

2019

Self Cite

The morphology of subsoil influences the soil-structure interaction and it makes complex to predict seismic structural stability. The structural elements seismic response associate to soil-structure interaction requires expansive investigation considering soil morphology. The main objective of the present study is to identify the influence of near-fault ground motion mechanism reached by the structure element for evaluating 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 (i) the displacement mechanism and the applied seismic load of the structural element, (ii) the strain energy modification and (iii) the structural vibration patterns of continuous beam in a timber frame have been changed in association to the soil foundation characteristics. The innovation of this study is the soil-structure interaction, the soil layers interaction, the near-fault ground motion and the mechanical properties of the soil at different location of the soil foundation, that are fundamental parameters to control continuous timber beam seismic design.

“…There is a report on the improvement of the seismic resistance of historical industrial timber buildings [4]. Several research were reported on timber beam and column to study displacement, strain energy and seismic load sharing [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

The Timber Floor Seismic Design by Means Finite Element Method

Sai-mai

2019

Civ Eng J

Self Cite

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.