PERILAKU GESER BALOK CASTELLATED MODIFIKASI DENGAN PENGAKU DIAGONAL TULANGAN BAJA

• المؤلفون الرئيسيون: , Milla Dwi Astari, , Prof. Ir. Iman Satyarno, M.E., Ph.D.
• التنسيق: Theses and Dissertations NonPeerReviewed
• منشور في: [Yogyakarta] : Universitas Gadjah Mada 2014
• الموضوعات: ETD
• الوصول للمادة أونلاين: https://repository.ugm.ac.id/133869/; http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=74746
• المؤسسة: Universitas Gadjah Mada

Steel materials mostly used for high-rise buildings and buildings with wide spans. In addition to the ability of the steel material large enough to withstand tensile and compressive, owned ductility properties of steel make this excellent material used in construction in seismic region like Indonesia. However, because the price is relatively expensive steel materials it is necessary to be able to obtain a design that is more economical steel construction and can minimize the use of steel materials. The aim of this study was to determine the shear behavior of castellated beam with diagonal stiffener reinforcement and compare with the results of previous research. Modification castellated beams with steel reinforcement bracing (BCT) which is made of steel profiles tested IWF 150x75x7x5 mm straight cut in the middle of the body, and connecting with steel reinforcement D22, so it becomes high beams with effective span of 275 mm and 910 mm, referring to the dimensions of research previously. Setting up static loading test using 2 points at a distance of 244.5 mm from support. Deformation monitored with LVDT 5, 2 mounted vertically on the bottom of the specimen, 2 pieces mounted horizontally on the side of the diagonal stiffener, and 1 piece mounted vertically at midspan position under the profile T top. Imposition done through hydraulic jack with a gain of 1 kN intervals to exceed Pmaks, and all deflection and strain responses were recorded. Testing was stopped when the load has decreased 30% from Pmaks. The results showed the shear capacity of the test specimen BCT (Reinforcement Modification Castellated Beams) with reinforcing steel stiffeners, determined by inelastic buckling capacity of the T-section stiffeners and reinforcing steel that is ductile collapse mechanism. The difference in value between BCT Pyield with BCH is 30.33%, BCT with BCM is 38.57%, BCT with BCS was 92%. The difference in value between BCT Pmaks with BCM is 45.29%, BCT with BCH is 45.7%. For comparison the value of strength to weight ratio between BCH with BCT approximately 21.9% and the difference between the BCM and the BCT approximately 29.6%. As for the value of strength to cost ratio comparison between the BCM BCT, BCH and BCS are respectively 39.3%, 29.6% and 84.2%. In general, addition of a lateral stiffeners reinforcing steel, in addition to overcome the problem of buckling on the web post, also increase the shear capacity of castellated beam modification.