EAPSI: Implementation of High-Strength Materials in Structural Engineering Applications

最近的进展现在使高强度材料（HSM）在结构中使用。hsm提供了等效柱/梁强度的选择，同时减小了构件的尺寸。钢筋混凝土结构在世界范围内广泛应用于许多住宅建筑和桥梁中，由于高层建筑的上部荷载大，需要对高层建筑的基础使用高强混凝土（HSC）。与高速切削相关的一个挑战是脆性破坏模式，导致较差的抗震性能。虽然对高速滑板的研究很普遍，但对其抗震性能的研究却很有限。在台湾进行这个项目提供了利用台北独特的国家地震工程研究中心（NCREE）实验室的机会。在shh - jiann Hwang博士的监督下，将在大型实验室中进行使用HSM的建筑结构柱的全面实验测试。这项研究将有助于确定使用普通强度混凝土的标准做法是否会成功地过渡到高强度混凝土。在完成全尺寸试验测试后，将结果与使用普通强度材料的类似测试结果进行比较，以了解不同加载模式下HSM柱的力学差异。参数化研究将通过分析模型进行，以进一步了解和理解。实验结果和数值结果经过处理后，这些结果将用于确定对柱设计细节的改进。可能的改进包括改变约束的增强细节。一旦确定了必要的改进，将生成一组最终的HSM列详细信息，并可用于确定HSM的详细设计代码。​

Recents advancements now enable high-strength materials (HSM) to be used in structures. HSMs provide the option for equivalent column/beam strength while reducing the dimensions of the member. Reinforced concrete structures are widely used in many residential buildings and bridges throughout the world with the need for high-strength concrete (HSC) towards the base of high-rise buildings due to the large load from upper levels. A challenge associated with HSM is the brittle failure mode resulting in poor seismic performance. Although research on HSM is prevalent, there has been limited research on its seismic performance. Conducting this project in Taiwan provides the opportunity to use of the unique National Center for Research on Earthquake Engineering (NCREE) Laboratory in Taipei. Full-scale experimental tests of columns for building structures using HSM will be performed in the large lab under the supervision of Dr. Shyh-Jiann Hwang. This research will help determine if standard practice using normal-strength concrete will transition to high-strength concrete successfully. Upon completion of the full-scale experimental tests, the results will be compared with similar tests using normal strength materials to understand the differences in mechanics of HSM columns under various loading patterns. A parametric study will be performed via analytical models to further knowledge and understanding. After results from experimental and numerical results are processed, these results will be used to determine refinements to the column design details. Possible refinements may include changes in reinforcement details for varying the confinement. Once the necessary refinements are determined, a final set of HSM column details will be generated and can be used to determine a detailed design code for HSM. This NSF EAPSI award is funded in collaboration with the National Science Council of Taiwan (Taiwan).