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The Top 20 Most-Cited Papers from 2022 to 2023
2020 Vol. 35, No. 2
Display Method:
2020, 35(2): 1-12.
doi: 10.13206/j.gjgSE20010803
Abstract
PDF (17081KB)
Abstract:
The roof structure of Beijing Daxing International Airport Terminal Building is a long-span steel structure. It is an over-limit high-rise building structure with a maximum structural length of 504 m and a maximum span of 125 m. Static and pseudo-static tests were carried out to study the static and seismic performance by making a 1:10 scale model of overall structure of C1 area of the roof steel structure of Beijing Daxing International Airport Terminal Building. The space static loading test was conducted on 9 full-size complex tubular joints to examine the effect of stiffening ribs, steel grades, and loading modes. The results indicate that the experimental values of the structural response under vertical load is consistent with the theoretical values. Local members buckle and fracture are the failure modes of the C-shaped column structure. After the failure occurs, the bearing capacity of the C-shaped column structure does not decrease significantly and the deformation does not increase significantly. It indicates that C-shaped column structure has a good overall stability. The energy dissipation capacity of the C1 overall structure is relatively stable, and the stiffness degradation of the structure is significant when it enters the elastic-plastic state. The failure mode of the C1 overall structure is that plastic hinges appear at the end of the generalized beam, which meets the structural design concept of "strong columns and weak beams". The C1 overall structure can withstand the impact of rare earthquake of magnitude exceeding 9 degrees. The structure has a high safety reserve and good seismic performance.
The roof structure of Beijing Daxing International Airport Terminal Building is a long-span steel structure. It is an over-limit high-rise building structure with a maximum structural length of 504 m and a maximum span of 125 m. Static and pseudo-static tests were carried out to study the static and seismic performance by making a 1:10 scale model of overall structure of C1 area of the roof steel structure of Beijing Daxing International Airport Terminal Building. The space static loading test was conducted on 9 full-size complex tubular joints to examine the effect of stiffening ribs, steel grades, and loading modes. The results indicate that the experimental values of the structural response under vertical load is consistent with the theoretical values. Local members buckle and fracture are the failure modes of the C-shaped column structure. After the failure occurs, the bearing capacity of the C-shaped column structure does not decrease significantly and the deformation does not increase significantly. It indicates that C-shaped column structure has a good overall stability. The energy dissipation capacity of the C1 overall structure is relatively stable, and the stiffness degradation of the structure is significant when it enters the elastic-plastic state. The failure mode of the C1 overall structure is that plastic hinges appear at the end of the generalized beam, which meets the structural design concept of "strong columns and weak beams". The C1 overall structure can withstand the impact of rare earthquake of magnitude exceeding 9 degrees. The structure has a high safety reserve and good seismic performance.
2020, 35(2): 13-28.
doi: 10.13206/j.gjgSE20010801
Abstract:
The key issues in progressive collapse analysis include material nonlinearity, initial imperfections, dynamic effects and catenary effects. The structural stability analysis for progressive collapse resistance is mainly based on the alternative path method, and the response of the structure is checked after the removal of key vertical members. The global structural analysis can be performed by three methods, i. e. linear static analysis, nonlinear static analysis and nonlinear dynamic analysis. In this paper, the direct analysis method based on nonlinear static analysis is adopted to to consider the key factors affecting the structural behaviors, such as material nonlinearity, initial geometric imperfection, residual stress, joint stiffness, etc. Using software NIDA, this paper presents the analysis and design process of the alternative path method specified in the specification GSA and UFC via a worked example. The conventional linear analysis method is also used for comparison purpose.
The key issues in progressive collapse analysis include material nonlinearity, initial imperfections, dynamic effects and catenary effects. The structural stability analysis for progressive collapse resistance is mainly based on the alternative path method, and the response of the structure is checked after the removal of key vertical members. The global structural analysis can be performed by three methods, i. e. linear static analysis, nonlinear static analysis and nonlinear dynamic analysis. In this paper, the direct analysis method based on nonlinear static analysis is adopted to to consider the key factors affecting the structural behaviors, such as material nonlinearity, initial geometric imperfection, residual stress, joint stiffness, etc. Using software NIDA, this paper presents the analysis and design process of the alternative path method specified in the specification GSA and UFC via a worked example. The conventional linear analysis method is also used for comparison purpose.
2020, 35(2): 29-65.
doi: 10.13206/j.gjgS19112602
Abstract:
The retractable roof is a relatively new structural system that can be converted between indoor and outdoor environments according to weather conditions, making full use of daylight illumination and fresh air, greatly improving the conditions of use and having been applied in domestic and foreign construction projects. A comprehensive review of the development of retractable roof engineering at home and abroad was made, the key technologies such as roof opening & closing mode, structural system, enclosure structure, and driving and control system were introduced. In addition, a brief introduction to the development of relevant technical standards was presented briefly. Finally, the future development direction of the retractable roof structure was prospected.
The retractable roof is a relatively new structural system that can be converted between indoor and outdoor environments according to weather conditions, making full use of daylight illumination and fresh air, greatly improving the conditions of use and having been applied in domestic and foreign construction projects. A comprehensive review of the development of retractable roof engineering at home and abroad was made, the key technologies such as roof opening & closing mode, structural system, enclosure structure, and driving and control system were introduced. In addition, a brief introduction to the development of relevant technical standards was presented briefly. Finally, the future development direction of the retractable roof structure was prospected.
2020, 35(2): 66-73.
doi: 10.13206/j.gjgSE20010802
Abstract:
Modular construction is an advancement from various prefabricated technologies that existed for decades in the construction industry and is a platform to integrate such technologies into providing a more holistic solution. Due to the rapid speed of construction and minimised work on-site, modular construction is becoming a more popular method in the modern construction industry. Steel as a material is quite heavily used in modular structures as it provides a more capable option in designing versatile structures that are both easy to install, relatively lighter modules and suitable for disassembly. While the steel industry continues to grow rapidly in China, its use in modern construction technologies such as modular construction would result in great benefits both locally and internationally.
Modular construction is an advancement from various prefabricated technologies that existed for decades in the construction industry and is a platform to integrate such technologies into providing a more holistic solution. Due to the rapid speed of construction and minimised work on-site, modular construction is becoming a more popular method in the modern construction industry. Steel as a material is quite heavily used in modular structures as it provides a more capable option in designing versatile structures that are both easy to install, relatively lighter modules and suitable for disassembly. While the steel industry continues to grow rapidly in China, its use in modern construction technologies such as modular construction would result in great benefits both locally and internationally.
