新型误差可调弦支穹顶模型加载试验研究

冯玉龙; 周臻; 孟少平; 王永泉

doi:10.6052/j.issn.1000-4750.2013.04.0361

新型误差可调弦支穹顶模型加载试验研究

东南大学混凝土及预应力混凝土教育部重点实验室,南京 210096

基金项目: 江苏省自然科学基金项目(BK2010428); 江苏省“青蓝工程”

详细信息

作者简介:
冯玉龙(1990-),男,安徽滁州人,博士生,主要从事新型预应力结构体系的研究(E-mail:feng_yulong@126.com); 孟少平(1960-),男,江苏泰州人,教授,博士,博导,主要从事预应力混凝土结构的研究(E-mail:cardoso_meng@sina.com); 王永泉(1981-),男,江苏姜堰人,讲师,博士,主要从事预应力结构施工力学理论的研究(E-mail:wyq_seu@126.com).

通讯作者:
周臻(1981-),男,江西萍乡人,副教授,博士,主要从事新型预应力结构体系的研究(E-mail:seuhj@163.com).

中图分类号: TU393.3; TU317.1
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- 文章访问数: 254
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出版历程
- 收稿日期: 2013-04-21
- 修回日期: 2014-05-14
- 刊出日期: 2014-10-24

MODEL LOADING EXPERIMENTAL RESEARCH ON NEW ERROR-ADJUSTABLE SUSPEN-DOME STRUCTURES

Key Laboratory of Concrete and Prestressed Concrete Structures of the Ministry of Education, Southeast University, Nanjing 210096, China

摘要

摘要: 弦支穹顶结构是一种由上层网壳结构和下层索杆体系复合而成的结构体系,上层网壳节点的初始安装偏差是影响结构受力性能的重要因素之一。为此,提出了多向误差可调节点的概念,容许与节点相连的网格杆件在水平方向、竖直方向和杆件轴线方向进行空间三维多向调整,进而能够调节节点空间几何位置。设计了一种针对弦支穹顶结构的多向误差可调节点,并对其进行了分级加载试验,结果表明该节点受力在加载过程中始终处于弹性范围以内,验证了其安全性和可靠性。然后,制作了一跨度为3m的节点误差可调弦支穹顶模型,提出了误差可调节点的安装调节流程,分别对节点位置误差未调整和调整的结构进行了静力加载试验,试验结果表明：误差调整后的结构试验位移值比未调整的小,误差调整后的结构杆件轴力分布较合理,且荷载-位移曲线和荷载-轴力曲线都具有较好的线性关系,结构的受力性能得到了改善。
- 弦支穹顶 /
- 误差可调 /
- 模型加载试验 /
- 节点 /
- 结构性能
Abstract: Suspen-dome is a kind of structural system, which is composed of an upper shell structure and a lower cable-strut system. The initial installation deviation of upper shell joints is an important factor affecting the mechanical behavior of suspen-dome structures. Therefore, the concept of a multi-way error-adjustable joint is developed. The members connected to this joint are allowed to be adjusted in the horizontal, vertical and member-axial directions. In this way, the spatial coordinates of joints can be adjusted. The configuration of a multi-way error-adjustable joint is desigined for suspen-dome structures. A step loading test is conducted for this joint. Results show that the joint is always in the elastic state throughout a loading process, indicating that the proposed joint is safe and reliable. A suspend-dome model of 3-m-span with proposed multi-way error-adjustable joints is constructed. The installation and adjustment procedures for this kind of joints are presented. A step loading test is respectively conducted under adjusted and unadjusted conditions. Results show that after adjustment, the measured displacement is smaller, the force distribution is more uniform, and the load-displacement relation and load-force relation are closer to linear. Then the mechanical performance of the structure can be improved.
- suspen-dome /
- error-adjustable /
- model loading experiment /
- joint /
- structural performance

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参考文献(18)

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文章访问数: 254
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新型误差可调弦支穹顶模型加载试验研究

通讯作者: 周臻(1981-),男,江西萍乡人,副教授,博士,主要从事新型预应力结构体系的研究(E-mail:seuhj@163.com).

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MODEL LOADING EXPERIMENTAL RESEARCH ON NEW ERROR-ADJUSTABLE SUSPEN-DOME STRUCTURES

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目录

通讯作者:
周臻(1981-),男,江西萍乡人,副教授,博士,主要从事新型预应力结构体系的研究(E-mail:seuhj@163.com).