高性能多功能一体化复合墙板连接设计与性能研究

Research on connection's design and performance of high performance and multi-functional integrated composite wall panel

结合现有预制混凝土外挂墙板体系与超高韧性水泥基复合材料(ECC)的优势,提出了一种由高性能薄壁大空腔壳体与多功能芯体组成的高性能多功能一体化复合墙板体系,其标准板面密度≤75 kg/m^(2),极限抗弯荷载最小为2333 N/m^(2),多功能芯体为改性聚苯颗粒泡沫混凝土的标准板的传热系数为0.77 W/(m^(2)·K)。结合标准板特性,提出了定制化外墙及其连接节点、密封防水等构造,多种构造组合可满足不同气候区、不同节能设计标准的要求,并根据需要对薄壁大空腔壳体的极限抗弯强度进行数值模拟,结果表明,均布抗弯荷载与试验结果相吻合,并验证了材料在数值模拟中的性能参数。

Combined with the advantages of existing prefabricated concrete wall panel systems and ultra-high tough cement-based composites(ECC),this paper proposes high performance multi-functional integrated composite wall panel system composed of high-performance thin-walled large cavity housings and multi-functional cores.Its standard surface density≤75 kg/m^(2),minimum extreme anti-bend load is 2333 N/m^(2).When the multi-functional core is modified polystyrene particle foam concrete,the heat transfer coefficient is 0.77 W/(m^(2)·K).Combined with the characteristics of the standard panel,the customized external wall and its connection nodes,sealing and waterproof structures are proposed.At the same time,a variety of combinations can meet the requirements of different climate areas and different energy-saving design standards.According to the needs,numerical simulation of the thin-walled large cavity shell ultimate bending was conducted.The results show that the uniform bending load is consistent with the experimental results,which verifies the performance parameters of the material in the numerical simulation.