【摘要】 文章对已有相关试验进行仿真对比，验证仿真的可行性，然后设置多种工况对结构防连续倒塌的影响因素进行对比分析。结果表明：提高混凝土强度与普通钢筋强度可以延缓结构变形，提高梁机制的最大承载力，但是对于悬链线机制与整体结构的防连续倒塌能力贡献较小；提高预应力筋配筋率可以在梁机制与悬链线机制阶段显著提高结构的防连续倒塌能力，而预应力筋张拉控制应力对结构防连续倒塌贡献较小；楼板对结构防连续倒塌有较大的贡献，梁柱节点刚度对结构防连续倒塌无明显贡献，柱失效位置对结构防连续倒塌有重大的影响。更多还原

【Abstract】 According to the existing experiments, the feasibility of the simulation is verified, and then multiple working conditions are set to carry out the comparison of factors influencing the structural progressive collapse resistance. The results show that the increase of concrete strength and ordinary reinforcement strength can delay the structural deformation and improve the maximum bearing capacity of the beam mechanism, but it has little effect on the structural progressive collapse resistance in the catenary mechanism stage. The increase of prestressed reinforcement ratio can significantly improve the anti-progressive collapse performance of the structure in the beam mechanism and catenary mechanism stages. The prestressed tension control stress contributes little to the anti-progressive collapse of the structure. The floor makes a great contribution to the anti-progressive collapse, the beam column joint stiffness has no obvious effect on the anti-progressive collapse, and the column failure position has a significant impact on the anti-progressive collapse.更多还原