广安市明月渠江部分斜拉桥设计

广安市明月渠江特大桥为预应力混凝土部分斜拉桥，主桥跨径布置为（110+210+110）m，采用墩梁塔固结体系。主梁为单箱三室截面，宽度为23m，根部截面高度为7.5m，跨中截面高度为1.6m，梁体设三向预应力钢筋，采用悬臂浇筑法施工。主塔为钢筋混凝土结构，采用矩形截面，塔高32.05 m。斜拉索为单索面双排索，全桥共设置56 对索。索鞍采用分丝管式索鞍，索鞍塔壁两侧设置双向抗滑键。本文研究结果可为后续类似工程设计提供参考。

Design and Analysis of a Partially Cable-stayed Bridge over the Mingyue Qujiang River in Guang'an

The long bridge over the Mingyue Qujiang River in Guang''an, Sichuan, China is a prestressed concrete partially cable-stayed bridge with a main bridge span arrangement of (110+210+110) m constructed with a pier-girder-tower fixed system. The girder features a single-box three-chamber section, measuring a width of 23 m, a height of 7.5 m at the main pier top, and a height of 1.6 m at mid-span. The girder is reinforced with prestressed steel bars in three directions and constructed using the cast-in-place cantilever method. The main tower is a reinforced concrete structure with a rectangular cross-section and a height of 32.05 m. The bridge has a total of 56 pairs of stay cables in a single plane. Sleeve cable saddles are adopted with two-way anti-slip keys arranged on both sides of tower wall. The findings in this study serve as a reference for the design of similar projects in the future.