织物增强混凝土模板及其叠合梁板生命周期力学性能研究

项目名称： 织物增强混凝土模板及其叠合梁板生命周期力学性能研究

项目编号： No.51478408

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 建筑科学

项目作者： 荀勇

作者单位： 盐城工学院

项目金额： 85万元

中文摘要： 织物增强混凝土在新结构中的理论和应用研究报道较少；其中，用织物增强混凝土预制永久性模板研究，不仅提高建筑工业化水平，而且可以提高结构耐久性。本人提出用精细不锈钢板网架立软织物的设想；在前期研究基础上，首先研究织物和钢板网的体积含量及模板的板厚、混凝土强度等对其抗拉和抗弯性能、抗冲剪性能、抗渗性能、耐腐蚀性能的影响；然后结合建筑模网技术优点，改进U形模和π形模等的组合搭接、构造尺寸、预制工艺和力学性能，并创新模板形式；重点研究叠合梁板在正常使用状态下表层模板裂缝特征和梁板构件耐久性之间的关系；研究表层模板对梁板构件力学性能退化的阻滞作用；研究基于生命周期力学性能的叠合构件非线性有限元分析方法；并研究基于建筑信息模型（BIM）的叠合梁板结构体系生命周期性能设计方法。通过研究，提出新型叠合结构设计理论，探索采用高性能材料提高混凝土结构耐久性的新途径，扩展织物增强混凝土研究新领域。

中文关键词： 织物增强混凝土；永久性模板；叠合梁板；生命周期；耐久性

英文摘要： The application and theoretical researches of textile reinforced concrete in the new structural systems are reported rarely. Wherein, the pre-casting stay-in-place formwork adopting the technology of textile reinforced concrete can improve not only the level of industrialized construction, but also the structural durability. The assumption is proposed, that using the fine stainless expanded steel as hanger for soft textile. On the basis of preliminary studies, firstly, the influence of the volume of textile and stainless expanded steel, the formwork thickness and its matrix concrete strength, the tensional and flexural properties, the anti-punching performance, the impermeability, and the corrosion resistance of composite sheets are studied respectively. Secondly，the lap jointing type，constructional detail, precast technology and mechanical properties of the U shaped beam-formwork, and the π shaped slab-formwork are also studied respectively. The formwork forms are innovated referring to the advantages of the technology of construction formwork. The research contents focus on the listed aspects, which including the relationship between the cracking feature of the surface formwork and durability of the composite beam and slab members under the normal employment, the delayed effect of the surface formwork to the mechanical properties degradation of composite beam and slab members, the composite component nonlinear finite element analysis method based on the mechanical properties of the life cycle, and the design theories of the composite structures based on the BIM (Building Information Modeling) technology in the life cycle. Through the above studies，the new design theory of composite structures is proposed, the new method used to improve durability of concrete structures is explored which using high performance materials, and the new research field of textile reinforced concrete is expanded.

英文关键词： textile reinforced concrete;stay-in-place formwork;composited beam and slab;life cycle;durability