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提出了内、外钢管的强度降低系数和内填混凝土的强度提高系数，并利用弹性理论的方法导出了同种双钢管混凝土轴心受压短柱在极限状态下的承载力，从而揭示了这一新型结构的力学工作性能，为这一结构的推广和进一步研究打下基础。
The strength reduction coefficient of the inner and outer steel pipes and the strength improvement factor of the filled concrete are put forward, and the bearing capacity of the same double-stranded concrete axial compression stub under the ultimate state is deduced by using the elastic theory method, which reveals that The mechanical performance of a new type of structure lays the foundation for the promotion and further study of this structure.