Many steel structures collapse during the 1994 Northridge Earthqkuake due to poor beam-column connection. Structures fail to maintain strong column weak beam condition, leading to unsafe collapse mechanism. The use of Reduced Beam Section (RBS) is able to force the inelastic deformation away from beam-column connections. The method reduces beam flange area in order to reduce the beam moment capacity at the interface of the column. The previous study on steel special moment resisting frames (SMRF) using RBS in their one principal axis shows that their interstory drift are larger than the limitation value defined by Vision 2000. The structures use wide flange section for their colums. Continuing the research, this study is aimed to check the performance of steel moment resisting frames using RBS in their two major orthogonal axes. In order to reduce the excesive interstory drift, structures use kingcross section.Beams and columns are design based on Indonesian Steel Code SNI 1729-02 a
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机译：由于梁柱连接不良，在1994年Northridge Earthqkuake期间许多钢结构倒塌。结构无法维持强柱弱梁状态，从而导致不安全的坍塌机制。减小梁截面（RBS）的使用能够使非弹性变形远离梁柱连接。该方法减小了梁的凸缘面积，以减小在柱的界面处的梁的力矩能力。先前对在一个主轴上使用RBS的钢制特殊抗力矩框架（SMRF）的研究表明，它们的层间位移大于Vision 2000定义的极限值。结构的立柱使用宽法兰截面。继续研究，这项研究旨在检查在两个主正交轴上使用RBS的抗弯矩框架的性能。为了减少过度的层间位移，结构使用了国王横截面。梁和柱的设计基于印尼钢规SNI 1729-02 a
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