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Journal : International Journal of Advanced Science and Computer Applications

Computing steel frame analysis of behavior semi-rigid connection Aco Wahyudi Efendi
International Journal of Advanced Science and Computer Applications Vol. 2 No. 1: March 2023
Publisher : Utan Kayu Publishins

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47679/ijasca.v2i1.17

Abstract

Semi-rigid connections are very economical compared to other connections because they can prevent the frame from breaking immediately due to brittleness without endangering the entire structure. Steel frame construction is one of the types of construction described in the building codes for simple seismic buildings. The research on the use of this semi-rigid connection uses one of the computer software that uses the finite element method, namely ANSYS ED.9, by taking validation models from experimental and manual calculation analysis and using 35 research models with different loads, positions and number of bolts and types of portal bracing. The ability to survive on the gantry due to side loads is dominated by the number and position of the bolts and the type of gantry stiffener used, this is evident from the different models, with the rise ratio in each model ranging from 0.7852 to 2.5900 and in ranges of softening compared to clamped stiffeners, which experience a decrease in stress, with the same ratio.
Simulation of fire exposure behavior to building structural elements using LISA FEA V.8. Aco Wahyudi Efendi
International Journal of Advanced Science and Computer Applications Vol. 2 No. 2: September 2023
Publisher : Utan Kayu Publishins

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47679/ijasca.v2i2.31

Abstract

The purpose of this work is to evaluate the most generally used techniques for measuring the thermal conductivity of concrete, as well as to consider the variables influencing the thermal conductivity of cement-based materials. Based on previous research indicating that the pattern of heat flow can be modeled in a numerical analysis program and provide a hue of coverage and differences in indoor temperature conditions, as well as the impact that occurs on several elements in the room, a heat simulation analysis was performed in this study due to a fire. The researchers in this study simulated the flow pattern from the temperature that occurred due to fire in a room measuring 4000x4000 mm with a wall thickness of 200 mm with Hebel/light brick material, floor plate thickness was 120 mm, and the size of the building column structural elements was 400x400 mm with the material reinforced concrete. According to the simulation results of a fire that occurred in the middle of the room with two conditions for installing hebel walls, namely covering the building structure columns and those behind the building structure columns, there is an increase in the temperature of the column with a ratio of 1.062 in the two conditions where the temperature of the wall lining the column is 6.28% lower than the temperature of the wall behind the column, while the heat flux magnitude that occurs is lower.
Characteristic behavior of soil using bacterial biogrouting with LISA FEA V.8. Aco Wahyudi Efendi
International Journal of Advanced Science and Computer Applications Vol. 3 No. 1 (2024): March 2024
Publisher : Utan Kayu Publishins

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47679/ijasca.v3i1.47

Abstract

The increasingly widespread use of micro-bacteria in research to improve soil characteris-tics in the world of construction and also provide a significant increase in soil carrying ca-pacity so that this kind of research makes a very good contribution where the material and mixing object are natural materials, namely in the form of bacteria. This study used the finite element method with the help of LISA V.8 FEA (Li-cense), a finite element method software package, to obtain the stress arising from existing soil ma-terial with soil material that has been mixed with mycobac-teria or the biogrouting method. According from the results of the analysis using numerical analysis using the finite el-ement method LISA V.8 FEA program, it can be seen that there is a reduc-tion in the oc-currence of settlement after adding the two bacteria which have been aged for 30 days with a reduction in soil settlement of 2.9-2.27 mm de-spite an increase in stress. ranging from 58.3 to 69.4 kN/m2.