| 管拱面内五点对称加载试验及其承载力简化算法研究 |
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| 引用本文： | 陈宝春,韦建刚. 管拱面内五点对称加载试验及其承载力简化算法研究[J]. 工程力学, 2007, 24(6): 73-78 |
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| 作者姓名： | 陈宝春 韦建刚 |
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| 作者单位： | 福州大学土木工程学院,福州,350002;福州大学土木工程学院,福州,350002 |
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| 摘 要： | 进行了钢管拱和钢管混凝土拱面内五点对称加载受力全过程试验。对多点对称荷载作用下管拱受力性能进行了讨论,对管拱极限承载力的简化算法进行了分析。结果表明,对称多点集中力下,非纯压拱会发生非线性分支屈曲破坏;拱以受压为主时,管内混凝土对提高拱的极限承载力和刚度均有较大的作用;采用等效梁柱法进行管拱极限承载力计算具有较好的稳定性。
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| 关 键 词： | 桥梁工程 钢管 钢管混凝土 拱 试验 稳定 分支 极限承载力 |
| 文章编号： | 1000-4750（2007）06-0073-06 |
| 修稿时间： | 2005-10-302006-04-13 |
EXPERIMENTS FOR ULTIMATE LOAD-CARRYING CAPACITY OF TUBULAR ARCHES UNDER FIVE IN-PLANE SYMMETRICAL CONCENTRATED LOADS AND THE SIMPLIFIED CALCULATION METHOD |
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| CHEN Bao-chun,WEI Jian-gang. EXPERIMENTS FOR ULTIMATE LOAD-CARRYING CAPACITY OF TUBULAR ARCHES UNDER FIVE IN-PLANE SYMMETRICAL CONCENTRATED LOADS AND THE SIMPLIFIED CALCULATION METHOD[J]. Engineering Mechanics, 2007, 24(6): 73-78 |
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| Authors: | CHEN Bao-chun WEI Jian-gang |
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| Affiliation: | College of Civil Engineering, Fuzhou University, Fuzhou, Fujian 350002, China |
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| Abstract: | Experiments of steel tubular arch and CFST arch under five in-plane symmetrical concentrated loads were carried out. The behaviors of tube arch under multi-symmetrical loads are discussed and the simplified method to calculate the ultimate load-carrying capacity is analyzed. The analytical results show that under symmetrical in-plane multi concentrated loadings, the arch with bending moment may fail with bifurcate buckling In the case that the axial force is dominant, the effects of filled concrete to strength and stiffness in the tubular arch are significant. The equivalent beam-column method used to calculate the ultimate load-carrying capacity of arch is stable. |
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| Keywords: | bridge engineering steel-tube CFST arch experiments stability bifurcate ultimate load-carrying capacity |
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