本报告提供了高强混凝土（HSC）柱等效矩形混凝土压应力块和横向钢筋设计要求的研究总结。由于ACI 318规范中有关柱设计的规定主要基于小于10000 psi（70 MPa）的混凝土强度，因此该规范中给出的等效矩形混凝土应力块系数的使用受到质疑。因此，人们开发了许多替代表达式。本报告总结了等效矩形混凝土应力块的各种建议以及HSC柱的设计指南。该报告还提供了各种荷载条件下HSC柱性能的研究重点，包括单调增加的同心或偏心压缩，以及随着变形增加和恒定轴向压缩的荷载反转。 讨论了高强混凝土柱在轴压和弯矩共同作用下的受力性能。还审查了确定抗震设计中横向钢筋数量和细节的各种建议。

This report provides a research summary of equivalent rectangular concrete compressive stress blocks and transverse reinforcement design requirements for high-strength concrete (HSC) columns. Because ACI 318 code provisions for column design are mostly based on concrete strengths less than 10,000 psi (70 MPa), the use of equivalent rectangular concrete stress block factors given in the code has been questioned. As a result, many alternative expressions have been developed. This report provides a summary of various suggestions of equivalent rectangular concrete stress block and design guidelines for HSC columns.The report also provides highlights of the research on the performance of HSC columns under various loading conditions, including monotonically increasing concentric or eccentric compression, and load reversals with increasing deformation and constant axial compression. The behavior of HSC columns subjected to combined axial load and bending moment is discussed. Various proposals for determining the amount and details of transverse reinforcement for seismic design are also reviewed.