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索塔锚固区是斜拉桥中的关键部位,尤其对于高震区斜拉桥更需要可靠的锚固形式,钢锚梁是一种较可靠的锚固形式,但对于空间索面斜拉桥,不适宜采用传统的钢锚梁锚固形式。本文以主跨360m的河口大桥为例,重点研究空间索面斜拉桥索塔锚固形式。研究结果表明,采用改进的钢锚梁锚固形式,将塔壁牛腿预埋钢板与钢锚梁焊接成整体,可减小桥塔塔壁尺寸,适宜高震区空间索面斜拉桥,其分析成果为同类大桥设计提供理论参考。
Pylon anchorage zone is a key part of cable-stayed bridge. Especially for high-tension cable-stayed bridges, reliable anchorage is needed. Steel anchorage beam is a reliable anchoring form. However, for space cable-stayed bridge, It is suitable to use the traditional steel anchor beam anchorage. In this paper, the main span span of 360m River Bridge as an example, focusing on space cable surface cable pylon anchorage form. The results show that the improved anchorage form of steel anchor can be used to weld the embedded steel plate of anchor wall and steel anchor together, which can reduce the size of tower and tower wall, Analysis results provide theoretical reference for similar bridge design.