南平闽江大桥索梁锚固区受力分析和试验研究  

Stress Analysis and Experimental Research on Cable-Girder Anchorage Zone of Nanpin Minjiang River Bridge

作　　者：黄宛昆[1] 

机构地区：[1]福州大学土木工程学院,福建福州350116

出　　处：《城市道桥与防洪》2013年第12期161-165,16,共5页Urban Roads Bridges & Flood Control

摘　　要：南平闽江大桥是一座采用半漂浮体系的双塔双索面预应力混凝土斜拉桥,跨径组成为(45+160+272+130)m。为了研究索梁锚固区的应力状况及其传递规律,进行了光弹模型试验和有限元分析。该文介绍了其试验与分析的内容。试验结果和有限元计算结果相吻合,验证了有限元计算模型的正确性和光弹性试验的可靠性。计算结果表明索梁锚固区域整体结构处于受压状况,结构内部应力分布均匀,验证了该桥索梁锚固区域结构的传力可靠性和构造合理性。The Nanpin Minjiang River Bridge is a half-floating double-pylon double-plane pre-stressed concrete cable-stayed bridge. Its span arrangement is 45+160+272+130m. In order to research the stress condition and its transmission rule of the cable-girder anchorage zone, the photoelastic model experiment and the finite element analysis are carried out. The article introduces its experiment and analysis contents. The experiment result coincides with the result of the finite element calculation to prove the correctness of the finite element calculation model and the reliability of the photoelastic experiment. The calculation result shows that the whole structure of cable-girder anchorage zone is under pressure, and the inner stress of the structure is well-distributed. Therefore, the transmission reliability and the rationality of the structure are proved in the cable-girder anchorage zone of this bridge.

关 键 词：桥梁工程 索梁锚固区 局部应力 光弹试验 

分 类 号：U448.27[建筑科学—桥梁与隧道工程]