Progressive collapse behavior of three-dimensional frame structures subjected to column loss during seismic excitation

https://doi.org/10.31130/ud-jst.2026.24(7B).589E

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Author

  • Cao-Vinh Le
    Institute of Research and Development, Duy Tan University, Vietnam; Faculty of Civil Engineering, Duy Tan University, Vietnam
    Van-Tien Nguyen
    Faculty of Civil Engineering, Duy Tan University, Vietnam; Huu Tien Limited Construction Company, Vietnam
    Phu-Anh-Huy Pham
    Institute of Research and Development, Duy Tan University, Vietnam; Faculty of Civil Engineering, Duy Tan University, Vietnam

Từ khóa:

Progressive collapse
column loss
Seismic excitation
Catenary action
Nonlinear dynamic analysis
3D frame
OpenSees

Tóm tắt

This study presents a nonlinear dynamic OpenSees framework for investigating the seismic progressive collapse response of three-dimensional reinforced concrete frames subjected to first-storey corner-column loss. The model incorporates material and geometric nonlinearities, distributed plasticity, rigid diaphragm constraints, and spatial force redistribution while maintaining computational efficiency for nonlinear time-history analysis. Two configurations, namely an intact frame and an initially damaged frame, were analyzed under earthquake ground motion. The results show that corner-column loss significantly increases compressive axial-force demand in the adjacent column, whereas the corresponding shear and bending moment responses increase only moderately. In the beam above the removed column, the response changes from slight compression to tensile axial force, while the bending moment decreases by approximately 50%, indicating a transition toward an axial tension-dominated catenary-like mechanism. The damaged frame also develops substantially larger lateral displacement demand, with peak roof displacement increasing by approximately 275% compared with the intact configuration.

Tài liệu tham khảo

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Jul 31, 2026
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Cách trích dẫn
Le, C.-V., V.-T. Nguyen, và P.-A.-H. Pham. “Progressive Collapse Behavior of Three-Dimensional Frame Structures Subjected to Column Loss During Seismic Excitation”. Tạp Chí Khoa học Và Công nghệ Đại học Đà Nẵng, vol 24, số p.h 7B, Tháng Bảy 2026, tr 113-9, doi:10.31130/ud-jst.2026.24(7B).589E.

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