Behavior of Steel frame subjected to lateral load

Abstract

Background: A steel frame system becomes structurally less efficient when subjected to large lateral loads such as a strong wind, earthquake. Many research efforts have been made to develop more efficient structural systems with better resistance against strong lateral loads. Methods: An attempt is made in this direction by both analytical and experimental studies. A bare steel framed model of size 4m x4m is chosen for G+2 storey with columns of height 4m. The particular frame is scaled down to 1:11 scale to perform shake table test for seismic zone-V in terms of modal frequencies. Same frame is modelled in Hypermesh software & analysis is done in Nastran and ETABS software's. The results obtained can be applied to 16 X 16m G+9 Multi-storeyed commercial complex structure and analysed in ETABS software for Base shear, response spectrum and pushover analysis to assess the performance of the structure. Findings: Prototype of G+2 storey scaled down model, ETABS and Nastran analysed models showed approximately same values of modal frequencies 10-12% which is an allowable percentage. Novelty: The results obtained shows that the base shear, performance point of the structural system and in terms of model frequencies are with in safer limits. The overall performance of the structure was found to be safe between operational to collapse stage. Advantages: The present work gives the dynamic behavior of bare steel frame subjected to lateral loads which helps in assessing the damage causing due to earthquake can be pretended to prevent the loss of life.

Structural Behavior of steel frame Infilled with Ferrocement Precast Panel S ubjected to Lateral Load

“…Results obtained are https://www.indjst.org/ validated to the G+9 story 16X16m 4x4 bayed model with 4m height commercial building infilled with Ferrocement precast panels for all stories modelled in ETABS which is in earthquake zone V of medium soil (5). The seismic, response spectrum analysis, steel design check ,Base shear, story drift is carried out using ETABS software and conclusions are drawn on the basis of the behavior After the analysis is completed (1) , hinge status, Capacity spectrum curve and performance point is obtained.…”

“…In recent days design and structural evaluation of the building systems subjected to lateral loads plays an important role. RCC and steel structures are constructed with various types of infills (1) .Precast Infilled panels are more often used for partitioning and covering building areas such as walls (2) .Steel frames infilled with precast panels are most widely used forms of multistory commercial construction the masonry walls are constructed after the basic frame work of beams, columns and slabs have gained sufficient strength. Various types of infills are used in which Ferrocement precast infills play a pivotal role these days in buildings as infilled wall (3) .…”

“…In the current work the behavior of steel frame infilled with Ferrocement precast panel is studied on a G+2 story 4X4 m bay with story height 4m is analyses both experimentally and analytically (1) .An attempt has been made in this research towards analytical solution. Analysis is carried out using ETABS software for the G+9 storied 16x16m and 4m story height (1) .Steel frames with Ferrocement Precast panel infill employed to assess the seismic behavior of the structure (5) .…”

“…In the current work the behavior of steel frame infilled with Ferrocement precast panel is studied on a G+2 story 4X4 m bay with story height 4m is analyses both experimentally and analytically (1) .An attempt has been made in this research towards analytical solution. Analysis is carried out using ETABS software for the G+9 storied 16x16m and 4m story height (1) .Steel frames with Ferrocement Precast panel infill employed to assess the seismic behavior of the structure (5) . The amount and location of infill panels greatly affect the natural frequency of the structural system the information of plastic hinges, Performance point and response of the structure can be analysed and the pretended results may provide the possibility of damages on the structures (4) .…”