Issue 51

A. Namdar, Frattura ed Integrità Strutturale, 51 (2020) 267-274; DOI: 10.3221/IGF-ESIS.51.21 268 and result in various seismic resistance of different structures while the applied near-fault ground motion was the same from the source and the urban construction site mostly content different soil layers. In the seismic design of the structure, the underground simulation modeling is extremely important to predict seismic response of the structure and subsoil. For structure, seismic design in the urban construction site, not only soil or structure improvement, is applied in the most consultation and research works, and effect of soil in structural element seismic response has not been studied and reported in the literature. In several small projects at the urban construction site is not economic to consider soil, structure, and near- fault ground motion characteristics; however, due to this limitation always many individual small buildings do not have sufficient seismic stability. The mechanical properties of soils have been investigated in order to analyze liquefaction which is one of a disaster occurring after a strong earthquake, and it has been realized that the site geological structure governs seismic wave which produces the liquefaction in the soil [1]. The tsunami producing dynamic wave in subsoil has been simulated and in order to maintain subsoil dynamic stability the sea forests were proposed to enhance subsoil trough the modification of wave geometry by reducing seawater depth, strengthening soil mechanical properties and preventing tsunami debris transfer debride tsunami to the city after the shear strength of the subsoil reached near zero and liquefaction occurred with maximum magnitude [2], The liquefaction in the coastal line causes the lateral and vertical pressures to the building and subsoil, on the other hand, tsunami may produce debride and, in this case debride accelerates tsunami destructive power, in order to prevent accelerate debride development, dynamic stability of the subsoil is significantly required using advances geotechnical engineering techniques. The numerical analysis has been used to assess the bearing capacity of different soils under normal and frozen conditions [3-5]. 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 [8-16]. There are several types of research on flexural load applied on structure and materials [17-21]. However, the seismic travel paths characteristics in the urban construction site for identifying seismic wave applied to each individual building has not been investigated and it required expansive investigation. Based on soil seismic response and structures seismic response mechanism, it is required to investigate the bridge between soil response and structure response. The seismic responses of multilayered soil effect on the structural elements seismic response have not been investigated considering strain, displacement and seismic load response for evaluating structural vibration patterns when the near-fault ground motions applied on the model and seismic wave are changed with travel from multilayered soils. In the present study, the numerical analysis has been done to evaluate strain energy modification due to the morphology of subsoil and developing load and displacement of a continuous beam in the timber frame with built-up synthetic subsoil for understanding soil-structure seismic interaction design. However, it is aimed to analyze the energies interaction and the nonlinear displacement of the structural elements. It hopes the outcomes of this research work support in enhancement of the seismic stability of small individual buildings. MODELING METHODOLOGY , MATERIALS AND SEISMIC LOADING he soil-structure interaction is a complex problem in geotechnical earthquake engineering and it requires to investigating seismic stability enhancement of structure and soil developing appropriate modeling, to recognize suitable near-fault ground motion and to apply powerful software in order to minimize research cost, to predict in detail the soil-structure interaction model behavior and to produce best seismic design guideline. For understanding the relationship between soil, structural elements and seismic loading excitation, the structure-multilayered soil seismic response is simulated and the near-fault ground motion is applied to the configuration using acceleration history of near-fault ground motion reported in the literature by means of ABAQUS software for performing the numerical simulation. The numerical simulation was performed considering the applied near-fault ground motion and the response of near-fault ground motion in form of strain energy, displacement and seismic load response within the selected structural elements; comparative analysis has been done with two simulated archetypes. The near-fault ground motion response characteristics studied in association with the multilayered soil were configured at two different subsoil models and the structural frame is constant at all configuration. When the two multilayered soils were designed, the structure was modeled with fixed base boundary condition. The multilayered soils interact was simulated using the deformable mesh. Using deformable mesh in the numerical simulation, as the model is subjected to seismic excitation is a supportive technique to develop cyclic graphs for displacement, strain and seismic load response. In studying the simulated configuration, the seismic load response, strain, and displacement are required to realize seismic stiffness and strength of the structural elements and soil at all stages of T