现存中国木拱桥结构调查与分析

发布时间：2018-01-12 06:07

本文关键词：现存中国木拱桥结构调查与分析　出处：《福州大学学报(自然科学版)》2015年06期 　论文类型：期刊论文

【摘要】：基于桥梁结构学,对我国现存的古代木拱桥开展结构调查,并对其主要参数进行分析总结.调查表明,现存130座闽浙木拱桥以单跨为主,矢跨比与我国其它桥梁相似,以1/4~1/7为主.闽浙木拱桥与汴水虹桥同属编木拱,但二者在结构上尚有不同之处.汴水虹桥结构较为简单,对其受力行为可用简化算法分析;而闽浙木拱桥结构复杂,手算分析困难,对结构的力学行为了解不够,已有的实桥测试效果不理想,有限元分析效果也不尽理想,建议以有机玻璃模型试验开展深入系统的研究.
[Abstract]:Based on bridge structure, the existing ancient wooden arch bridges in China are investigated and their main parameters are analyzed and summarized. The investigation shows that 130 Fujian and Zhejiang wooden arch bridges are mainly single-span. The rise-span ratio is similar to that of other bridges in China, with a ratio of 1 / 4 / 1 / 7. The wood arch bridge of Fujian and Zhejiang and Bianshui Hongqiao belong to wood arch, but there are still differences in structure between them. The structure of Bianshui Hongqiao is relatively simple. The stress behavior can be analyzed by simplified algorithm. However, the structure of Fujian and Zhejiang wood arch bridge is complex, the manual analysis is difficult, the mechanical behavior of the structure is not well understood, the existing actual bridge test effect is not ideal, and the finite element analysis effect is not ideal. It is suggested that a deep and systematic study should be carried out on PMMA model test.
【作者单位】：福州大学土木工程学院;
【基金】：国家自然科学青年基金资助项目(51408129) 福建省教育厅科研资助项目(JA13029,JK2013005)
【分类号】：U448.22;U448.31
【正文快照】： 0引言木材除用于梁桥外,也被用于拱桥之中,并发展形成了木肋拱、木桁拱、编木拱等结构形式[1-3].木肋拱需将木材弯成曲线状作为拱肋,加工工作量大.古代木肋拱以原木为主,受原木长度的影响,跨径较小.木桁拱用短木材组成桁架拱肋,通过分段折线来逼近曲线,木材无需弯曲成曲线型.

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