Behavior and Design of Composite Columns with High Strength Concrete Subjected to Axial Load

近年来，在美国的许多主要结构中，复合柱已被用于实现更高的效率。与此同时，高强混凝土技术发展迅速，许多重要结构都采用了高强混凝土。高强度混凝土和复合结构的优点可以结合起来实现更高的效率，特别是在柱上。组合形式为高强混凝土组合柱。在这些柱中，混凝土将提供额外的和稳定的压缩和钢将提供强度，刚度和延展性。研究的目的是研究高强混凝土组合柱的性能，并制定设计指南。目标将通过进行实验和分析一系列列，具有在实践中发生的配置代表。总共将测试16个样本。试件将呈W形包裹在高强度混凝土中。利用测试结果和结果的分析相关性，将修改当前复合柱的设计程序或制定新的程序。

In recent years, composite columns have been used to achieve greater efficiency in many major structures in the United States. Simultaneously, the technology of high strength concrete has advanced rapidly and several important structures have been constructed using high strength concrete. The advantages of high strength concrete and composite construction can be combined to achieve even further efficiency, particularly in the columns. The combinations is composite columns with high strength concrete. In these columns, the concrete will provide extra and stability in compression and the steel will supply strength, stiffness as well as ductility. The objectives of the research are to study behavior and to develop guidelines for design of composite columns with high strength concrete. The objectives will be met by conducting experiments and analyses on a series of columns have configurations representative of those occurring in practice. A total of sixteen specimens will be tested. The specimens will have W shapes encased in the high strength concrete. Using the test results and analytical correlations of the results, current design procedures for composite columns will be modified or new procedures will be formulated.