项目名称: 考虑界面滑移的新型竹-混凝土组合结构力学行为与设计理论研究
项目编号: No.51208262
项目类型: 青年科学基金项目
立项/批准年度: 2013
项目学科: 建筑环境与结构工程学科
项目作者: 魏洋
作者单位: 南京林业大学
项目金额: 25万元
中文摘要: 基于申请人对竹结构的前期研究,本项目提出新型竹-混凝土组合结构(BCC),解决普通竹结构体系刚度控制设计问题,提升竹结构的承载力及跨越能力。新型竹-混凝土组合结构充分利用了竹与混凝土两种材料的优点,重量轻、刚度大、承载力高,具有良好的抗火、隔声与耐久性能,节能、低碳,可广泛地应用于中、小跨径桥梁、低层及多层建筑结构。本课题旨在研究新型竹-混凝土组合结构的力学行为与设计理论,首先,通过推出试验研究不同连接件形式的竹-混凝土连接界面的力学性能,建立常用连接件类型的荷载-滑移关系理论模型;其次,通过不同参数下的竹-混凝土组合结构的抗弯试验及模型与理论分析,建立考虑界面滑移的竹-混凝土组合结构的计算理论;最后,针对竹-混凝土组合结构的长期力学性能,进行试验与模型分析,提出简单实用的竹-混凝土组合结构长期性能的分析方法。本课题研究有助于新型结构应用与组合结构的理论发展。
中文关键词: 竹结构;组合结构;竹-混凝土;剪力连接件;受弯性能
英文摘要: Based on the early research on bamboo structures of applicant, the novel bamboo-concrete composite (BCC) structures are proposed to solve the problem of the stiffness control design for the ordinary bamboo structures system, and to enhance the bearing capacity and spanning ability of the bamboo structures. Bamboo-concrete composite structures make full use of the advantages of two kinds of materials of bamboo and concrete, with light weight, high rigidity and high bearing capacity, good fire resistance, sound insulation and durability, energy saving, low-carbon, and can be widely used in small-span bridges, low-rise and multi-storey building structures. This project aims to study the mechanical behavior and design theory of the new bamboo-concrete composite structures. Firstly, the mechanical properties of bamboo and concrete connection interface with different kinds of connectors will be researched through push-out shear tests. The load-slip relationship theory model will be established on common types of connectors. Second, four-point bending tests, model and theoretical analysis of bamboo-concrete composite structures with different parameters will be conducted, and the analytical theory of bamboo-concrete composite structures will be presented considering interface slip. Finally, long-term behaviour of bamb
英文关键词: Bamboo structures;Composite Structures;Bamboo-concrete;Shear connectors;Flexural performance