Reinforcing steel imported into Colombia from various countries, which does not meet the requirements of local building codes, hinders the compliance with the life safety limit state intended by the local building code. The results of a statistical analysis of the tensile mechanical properties that characterize the stress-strain curves of steel bars marketed in Bogotá are presented and discussed. The experimental program was planned to provide statistics of the main mechanical properties of grade 60 steel bars with bar diameter ranging from 9.5 mm to 25.4 mm subjected to monotonic tension loading. The study comprises 85 monotonic tensile tests and 85 bending tests, including five specimens per diameter for each of three manufacturing companies evaluated. The measured results are compared with those reported by different studies conducted previously in Colombia, Mexico, Canada and the US. Characteristic graphical stress-strain curves are proposed for each diameter studied. These curves, along with the statistics reported for each bar diameter can be used for future analytical studies on the structural performance and reliability of reinforced concrete structures in central Colombia.

从各个国家进口到哥伦比亚的钢筋不符合当地建筑法规的要求，会妨碍遵守当地建筑法规规定的生命安全极限状态。介绍并讨论了表征在波哥大市售的钢筋的应力-应变曲线的拉伸力学性能的统计分析结果。该计划计划提供实验数据，以统计60级钢的主要机械性能，其棒材直径在9.5 mm至25.4 mm之间，承受单调张力载荷。这项研究包括85个单调拉伸试验和85个弯曲试验，其中包括对三个评估的制造公司中的每个直径的五个样本。将测量结果与之前在哥伦比亚，墨西哥，加拿大和美国进行的不同研究报告的结果进行比较。针对每个研究的直径提出了特征性的图形应力-应变曲线。这些曲线以及报告的每个钢筋直径的统计数据可用于将来对哥伦比亚中部钢筋混凝土结构的结构性能和可靠性进行分析研究。