无梁楼盖板柱节点冲切破坏与抗倒塌研究综述

Research Review of Punching Shear Failure and Collapse Resistance of Slab-Column Connections in Flat Slab Systems

摘要: 无梁楼盖具有净空高、施工方便、空间布置灵活等优点，但板柱节点区域同时承受较大的剪力、弯矩和局部应力集中，易发生脆性的冲切破坏，并可能诱发楼盖连续倒塌。基于板柱节点、无梁楼盖、地下车库事故、高性能材料、抗冲切构造、抗震与连续倒塌等文献，本文按照“研究问题–理论演进–工程反馈”的线索，对冲切机理与承载力模型、规范比较、影响参数、增强措施、多灾害作用、连续倒塌及数值模拟和数据驱动方法进行综述。总体来看，现有研究已从单节点静力承载力扩展到复杂边界、局部超载、体系倒塌和数据驱动预测；但在真实边界条件、模型统一性、后冲切性能和跨尺度验证方面仍需进一步深化。

Abstract: Flat slab systems offer advantages such as greater clear height, simplified construction, and flexible spatial arrangement. However, the slab-column connection region is subjected simultaneously to considerable shear forces, bending moments, and local stress concentration, making it susceptible to brittle punching shear failure and potentially triggering progressive collapse of the floor system. Based on the literature concerning slab-column connections, flat slabs, underground garage collapse accidents, high-performance materials, punching shear reinforcement, seismic performance, and progressive collapse, this paper reviews the punching shear mechanism and bearing capacity models, code comparisons, influencing parameters, strengthening measures, multi-hazard effects, progressive collapse, as well as numerical simulation and data-driven methods following the logic of “research issues - theoretical evolution - engineering feedback”. Overall, existing studies have extended from the static bearing capacity of isolated connections to complex boundary conditions, local overloading, structural-system collapse, and data-driven prediction. Nevertheless, further investigation is still required regarding realistic boundary conditions, model unification, post-punching performance, and cross-scale validation.