RESEARCH PROGRESS OF CONCRETE-INFILLED DOUBLE STEEL CORRUGATED-PLATE COMPOSITE WALLS WITH T-SECTION
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摘要: 介绍了T形截面波形钢板-混凝土组合墙承载性能的研究进展,包括截面强度承载力、整体稳定承载力以及相关的试验研究和有限元分析。由于其优越的承载性能,波形钢板-混凝土组合墙在高层建筑中有广阔的应用前景。T形截面波形钢板-混凝土组合墙由翼缘墙肢、腹板墙肢和矩形钢管混凝土边缘构件组成。其承载力设计包括波形钢板受压局部屈曲、双向压弯荷载作用下的截面强度以及轴心压力和腹板平面内压弯荷载作用下的整体稳定。其在试验中的破坏模式包括矩形钢管和波形钢板的局部屈曲、组合墙的弯曲失稳以及往复荷载作用下的受弯破坏,可采用精细和简化有限元模型分析其承载性能和抗震性能。所述部分设计算式为T/CECS 624—2019《波形钢板组合结构技术规程》所采纳,相关试验研究和有限元分析为标准编制提供了依据。Abstract: Research progress was introduced in the paper concerning the bearing capacity of concrete-infilled double steel corrugated-plate composite walls with T-section (T-CDSCW), including cross-sectional capacity, integral stability, and relevant experimental study and finite element analysis. Due to the excellent bearing capacity, CDSCWs have broad application prospects in high-rise buildings. The T-CDSCW is composed of flange and web wall elements and rectangular concrete-filled steel tubular boundary elements. The design of bearing capacity involves the local buckling of steel corrugated-plates, the cross-sectional capacity under axial compression and biaxial bending moment, and the integral stability under axial compression and both axial compression and bending in the web plane. The failure modes in the experiments were the local buckling of steel tubes and corrugated-plates, the flexural buckling of the T-CDSCW, and the flexural failure under cyclic loading. The bearing capacity and seismic performance could be simulated by refined and simplified finite element models. Some of the design formulas introduced in the paper have been adopted in Technical Specification for Structures with Corrugated Steel Plate Components (T/CECS 624-2019), and related experimental research and finite element analysis could provide the basis for the compilation of the standard.
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