- 目录
- 新型墙体材料与施工
- 首页
高性能纤维增强水泥基复合材料大空腔外墙板性能模拟研究
作者：史博元，麻鹏飞，程宝军，高育欣，康升荣
（中建西部建设建材科学研究院有限公司，四川 成都 610064）
摘要：基于高性能纤维增强水泥基复合材料和泡沫混凝土设计了一种新型大空腔外墙复合墙板。基于高性能纤维增强水泥基复合材料力学性能试验，依据数字孪生理念对复合材料力学性能及墙板构造设计性能开展了相应的有限元模拟以确定其数值模拟参数。在此基础上对大空腔外墙板的构造进行了优化设计研究，进行了极限弯载试验，验证了大空腔外墙板构造设计的合理性。结果表明，复合基材的抗压强度为78.5 MPa，抗拉强度为6 MPa，抗折强度为20 MPa，并建立了该材料的数值模拟模型，相关参数C1=0.375，C2=0.95，C3=3.2 MPa，C4=120 MPa；确定3个空腔，肋板厚度10 mm是科学合理的构造，此时均布破坏荷载为3.00 kPa。
关键词：外墙板；纤维增强水泥复合材料；力学性能；大空腔；结构设计
中图分类号：TU528.572 文献标识码：A 文章编号：1001-702X（2022）01-0103-05
Numerical simulation study on outer building wall panel with large cavity made of high performance fiber-reinforced cement-based composites
SHI Boyuan，MA Pengfei，CHENG Baojun，GAO Yuxin，KANG Shengrong
（China West Construction Group Co. Ltd.，Chengdu 610064，China）
Abstract：In this paper，a new type of composite wallboard with large cavity is designed based on high-performance fiber reinforced cement composite and foam concrete. Based on the physical properties test of composites，the corresponding finite element simulation is carried out according to the concept of digital twin to the physical properties of composites and design performances of the wallboard structure to determine the numerical simulation parameters. On this basis，the structure of large cavity exterior wall panel is optimized. The ultimate bending load test is carried out to verify the rationality of the large cavity external wall panel. Conclusions indicate that the compressive strength，tensile strength and flexural strength of the composite substrate were 78.5 MPa，6 MPa and 20 MPa，respectively. The numerical simulation model of the composite was established，and the relevant parameters were C1=0.375，C2=0.95，C3=3.2 MPa and C4=120 MPa. Three cavities are determined，the rib plate thickness of 10 mm is a scientific and reasonable structure. At this time，the uniform failure load is 3.00 kPa.
Key words：wall panel，fiber-reinforced cement composites，mechanical properties，large cavity，structural design