Uji Eksperimental Respon Struktur 3D Modelling Struktur Portal Open Frame dan Struktur Portal Bresing terhadap Beban Gempa

One of the obstacles in laboratory testing is the availability of testing capacity. So that the similitude method was developed which aims to replicate the state of the prototype by scaling the variables so that they can be tested in the laboratory. The purpose of this study was to determine the difference between the results of numerical tests and experimental tests on the response of the open frame portal structure and the braced portal structure to the perpindahan parameters and the driftt ratio of the steel portal structure in earthquake buildings. The method used in this research is the experimental test method. From the analysis results, the largest perpindahan difference between the numerical test and the experimental test of the open frame portal structure is on the 4th floor, with a difference of 21,8 mm, while the largest perpindahan difference in the braced structure is on the 6th floor with a difference of 14,54 mm. The highest perpindahan difference is between numerical tests and experimental tests that occur on the open frame structure are on the 3rd, 4th, and 5th floors while those that occur on the braced structure are on the 5th, 6th, and 7th floors but the experimental perpindahan test is still within the permit limits for structural planning and if reviewed from the driftt ratio results, the results exceed the allowable driftt ratio limit of 2% of the height of each building level located on the 1st and 6th floors of the open frame portal structure and on the 5th floor of the braced portal structure.