Performance Based Design of Reinforced Concrete Buildings

研究了建筑物基础在地震作用下的结构行为。首先讨论了结构体系作用力与基础体系被动抗力的平衡条件。其次，从地基系统主动抗力的角度讨论了桩与周围土层的协调条件。研究了偏心墙体框架结构在任意方向地震作用下的扭转反应。研究表明，在评估结构的扭转反应时，考虑地震动的方向是必要的。(Yoshimura)研究了一幢一层柔性建筑的非线性反应。研究表明，第一层的最大漂移幅度不仅受第一层的强度影响，还受其他层的强度的影响。在研究的基础上，将第一层位移控制在给定…范围内所需的建筑物强度提出了更多可允许的限度。(Yoshimura)基于地震运动的基本特征与非线性响应之间的一般关系，考虑能量平衡和地震持续时间，可以合理地定义非线性系统的等效线性系统。(Kabeasawa)定义了层剪安全系数，以防止钢筋混凝土建筑在强烈地震中的层倒塌。提出了一种预测钢筋混凝土结构层间位移的方法。分析了肋骨形状和接头长度对无箍筋搭接接头强度的影响。(Ichinose)提出了基于能力谱方法的非对称建筑抗震性能评估方法。在该方法中，利用由抗震设计谱得到的能力曲线和需求谱，可以简单、清晰地评估建筑物的地震反应。这项研究的目的是通过试验研究开洞悬臂剪力墙的变形能力，并评价用于估计开洞剪力墙抗剪强度的设计方程(桁架-拱形相似模型)，以估计开洞悬臂剪力墙的变形能力。(Kato)通过六个平面十字形组合试件的试验研究了内部梁柱节点的破坏机理。所有标本均在一个关节处失败。由于接缝面板中形成的混凝土斜撑的压缩坍塌，接缝在剪力作用下失效。然而，斜缝剪力可以由斜撑的周围混凝土来承载。对平面内侧阻力分布不均匀的钢筋混凝土结构进行了(Kitayama)非线性动力反应分析，提出了结构设计中应考虑扭转反应的指标。(中野)更少

Structural behavior of building foundation during seismic action is examined. First the equilibrium condition for the forces acting on the structural system and passive resistance of foundation system is discussed. Secondly the compatibility condition for the piles and surrounding soil layer is discussed from a point of active resistance of foundation system. (Kubo)The torsional response of a frame structure with an eccentrically placed wall subjected to earthquake motions with an arbitrary direction was studied. The study has revealed the necessity of considering the direction of ground motions in assessing the torsion response of a structure. (Yoshimura)The nonlinear response of a building with soft first story was studied. The study has revealed that the amplitude of maximum first story drift is affected not only by the strength of the first story but also that of other stories. On the basis of the study, the strength of buildings required to control the first story drift within giv … More en permissible limits was presented. (Yoshimura)Based on general correlations between basic characteristics of earthquake motions and nonlinear responses, an equivalent linear system for nonlinear system could be defined rationally considering the equilibrium of energy and the duration of earthquake. (Kabeyasawa)Story shear safty factor is defined to prevent story collapse in reinforced concrete buildings during severe earthquake. A method is proposed to predict inter-story displacement of reinforced concrete buildings. Effect of rib shape and splice length on the strength of lap splices without stirrups is analytically discussed. (Ichinose)This study presents the procedure for estimating seismic performance of asymmetric buildings based on a concept of the capacity spectrum method. In the method, the seismic response of the buildings can be evaluated simply and clearly by using the capacity curve and the demand spectrum obtained from seismic design spectrum. (Teshigawara)The objectives of this study were to examine deformation capacities of cantilever shear walls with openings experimentally and to evaluate the design equation (truss-arch analogous model), which had been developed to estimate the shear strength of shear walls with openings, for the estimation of the deformation capacities of cantilever shear walls with openings. (Kato)The failure mechanism of an interior beam-column joint was investigated by the tests using six plane cruciform subassemblage specimens. All specimens failed in a joint. The joint failed in a shear through the compressive collapse of the diagonal concrete strut formed in the joint panel. The diagonal joint shear however could be carried by the surrounding concrete of the diagonal strut. (Kitayama)Nonlinear dynamic response analyses of RC buildings having unbalanced distribution of lateral resistance in plan were carried out, and an index to be considered in structural design related to the torsional responses was proposed. (Nakano) Less