论文部分内容阅读
宁波外滩大桥主桥采用主跨225m的独塔四索面异型斜拉桥结构。“人”字型三角形索塔结构分为前塔柱、后斜杆和水平杆。上塔头为前塔柱和后斜杆的结合段,并集中锚固了四索面共计64根拉索,构造及传力均十分复杂。通过建立上塔头精细化有限元模型,分析该关键节点的应力分布和受力传递规律,其分析结果对类似复杂节点的构造优化设计及施工具有一定的参考价值。
The main bridge of Ningbo Bund Bridge adopts a single-tower four-cable surface profiled cable-stayed bridge structure with a main span of 225m. “Person ” font triangular tower structure is divided into the former tower, after the diagonal and horizontal rod. The top of the tower is the combined section of the front pylon and the back slat, and a total of 64 cables are anchored to the four cable surfaces in a concentrated manner. The structure and force transmission are very complicated. The finite element model of the upper column is established to analyze the stress distribution and stress transmission of the key nodes. The results of the analysis have certain reference value for the structural optimization design and construction of similar complex nodes.