This study succeeded an experimental investigation of the authors’ previous studies in which L-shaped dry mechanical joints were developed and tested to demonstrate an applicability to precast concrete frames. In their early study, use of L-shaped dry mechanical joints assembling precast concrete frames was verified both experimentally, demonstrating all structural components at joint experimentally functioned well, supporting both cyclic and monolithic loads. In the present study, design recommendations and collateral benefits were provided to design tall building frames based on an extensive strain analysis, while improving joints using interior stiffeners to greatly enhance structural performance of mechanical joints. How fast strains of joints are developed as deflections progressed was also explored based on rates of strain increase relative to deflection, while identifying degradation mechanism of mechanical joints (including rebars and steel sections attached to mechanical plates) that led to brittle failure modes. This study aims to provide design protocol for a 20-story apartment building with L-shaped precast columns spliced by mechanical plates. Beam-column joints were assembled by extended beam endplates, which were bolted to plates embedded in columns. A sufficient beam depth was determined by avoiding stress concentration exerted by extended beam endplates.

这项研究是对作者先前研究的实验研究的成功，在该研究中，开发并测试了L形干式机械接头，以证明适用于预制混凝土框架。在他们的早期研究中，通过实验验证了使用L形干式机械接头组装预制混凝土框架的效果，证明了接头处的所有结构组件在实验中均能很好地发挥作用，同时支持循环和整体荷载。在本研究中，在广泛的应变分析的基础上，为高层建筑框架的设计提供了建议和附带的好处，同时使用内部加劲肋改善了接头，从而大大提高了机械接头的结构性能。还根据相对于挠度的应变增加率，探索了随着挠度的发展，接头如何快速应变，同时确定了导致脆性破坏模式的机械接头（包括连接到机械板上的钢筋和钢型材）的降解机理。本研究旨在为L形预制柱通过机械板拼接的20层公寓楼提供设计方案。梁柱节点由延伸的梁端板组装，这些端板用螺栓固定到嵌入柱中的板上。通过避免延伸的梁端板施加的应力集中来确定足够的梁深度。本研究旨在为L形预制柱通过机械板拼接的20层公寓楼提供设计方案。梁柱节点由延伸的梁端板组装，这些端板用螺栓固定到嵌入柱中的板上。通过避免延伸的梁端板施加的应力集中来确定足够的梁深度。本研究旨在为L形预制柱通过机械板拼接的20层公寓楼提供设计方案。梁柱节点由延伸的梁端板组装，这些端板用螺栓固定到嵌入柱中的板上。通过避免延伸的梁端板施加的应力集中来确定足够的梁深度。