基于施工时变性的单立杆早拆模撑体系失效机理与失效控制研究

项目名称： 基于施工时变性的单立杆早拆模撑体系失效机理与失效控制研究

项目编号： No.51478119

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： 蔡雪峰

作者单位： 福建工程学院

项目金额： 88万元

中文摘要： 单立杆早拆模撑体系适合高层钢筋混凝土结构标准化、绿色和快速施工特性，深入研究其力学性能、失效机理和设计理论可为高效和安全应用提供相应理论依据和设计方法。本申请项目拟针对该模撑体系，考虑不同楼层各龄期混凝土力学性能的差异，提出基于施工时变性下施工层模撑及以下多层单立杆共同受力体系最优失效模式控制的设计理论和方法。为此，研究高层建筑各楼层不同龄期钢筋混凝土施工时变结构的损伤机理、钢筋混凝土构件一次性浇筑的该模撑体系与混凝土时变结构空间共同作用机理与失效模式、及该模撑体系与混凝土时变结构极限状态评价体系与设计控制理论，是进行其抗失效设计关键和亟需解决的问题。本项目拟对各龄期混凝土压弯结构损伤指标、粘结滑移关系以及该模撑结构体系的失效模式、评估指标及设计方法等展开系统深入研究，拟取得施工时变性下该体系设计理论与方法的创新性研究成果，成果对推广高层建筑标准化绿色和快速施工具有重要理论和社会意义。

中文关键词： 单立杆模撑体系；施工模板早拆；不同龄期混凝土；高层建筑施工时变；失效机理

英文摘要： The single pole early-dismantling formwork supporting system is fit to tall concrete building structural standardization, green and rapid construction characteristics. The further study of its mechanical performance, failure mechanism and design theory can provide corresponding theory basis and design method for efficient and safe application Considering mechanical property differences of each early-age concrete floor based on construction time-dependence, design theory and methods on the optimal failure mode control of construction layer single pole formwork supporting system and multilayer early-dismantling single pole common force-bearing system will be put forward in the application project.Therefore, construction time-dependence early-age concrete structure damage mechanism, the formwork supporting system and time-dependence early-age concrete structure interaction mechanism and failure mode under primary concreting, limit state evaluation system and design control theory of formwork supporting system and time-dependence early-age concrete structure are the key to resistance failure design and are need to solve. The early-age concrete bending structure damage index, reinforcement and early age concrete bond-slip relationship, single pole failure modes and failure control index, evaluation index system and design methods of single pole early-dismantling formwork supporting system will be studied. The design theory and method innovative research results will have important theoretical and social significance. to promote tall concrete building structural standardization, green and rapid construction.

英文关键词： Single pole formwork supporting system;early-dismantling construction formwork supporting system;each early-age concrete;construction time-dependence in tall buliding;failure mechanism