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无梁楼盖的极限承载力分析是根据无梁楼盖的破坏形态和塑性铰线理论,将破坏模式分为区格形、条带形及局部弯曲形,利用极限平衡原理及虚功原理推导出其极限荷载计算公式。本文的计算公式概念清楚,其计算值与试验值吻合良好。分析表明,无梁楼盖的中区格极限承载力最大,无边梁的角区格其极限承载力最小。当边梁抗弯刚度较弱时,边梁弯坏与板面破坏同时发生,当边梁抗弯刚度较强而抗扭刚度较弱时,边梁扭坏与板面破坏同时发生,当边梁抗弯及抗扭刚度都较强时,则只发生板面破坏。
The analysis of the ultimate bearing capacity of the beamless floor is based on the failure mode of the beamless floor and the theory of the plastic hinge line. The failure modes are divided into zones, strips and local bends, and are derived using the principle of limit equilibrium and the principle of virtual work. The ultimate load calculation formula. The concept of the calculation formula in this paper is clear and the calculated values agree well with the experimental values. The analysis shows that the ultimate capacity of the neutral zone of the beamless floor cover is the largest, and the corner zone of the edgeless beam has the smallest ultimate bearing capacity. When the bending stiffness of the side beam is weak, the side beam bending damage and the board surface failure occur at the same time. When the side beam has strong bending rigidity and weak torsional stiffness, the side beam twisting and the board surface failure occur at the same time. When the side beam is bending and torsion resistance When the stiffness is strong, only the surface damage occurs.