深中通道泄洪区下部结构宽墩对大悬臂盖梁受力的影响分析

独柱墩盖梁由于占地小、净空大、景观效果好,在市政桥梁工程甚至跨海桥梁工程中得到广泛应用.但由于采用独柱墩,墩柱横向尺寸较大,在盖梁受力分析时需考虑墩柱对盖梁受力的影响.以深中通道工程为背景,采用各种计算模型对其泄洪区引桥下部结构宽墩独柱盖梁进行详细的受力计算分析,对比分析各种模型的设计安全性和宽墩对盖梁受力的影响,从而对盖梁的设计计算提出建议.

Analysis on Influence of Substructure Wide Pier on Stress of Long Cantilever Bent Cap in Flood Discharge Area of Shenzhong Channel

The single-pillar pier bent cap is widely used in municipal bridge engineering and even sea-crossing bridge projects because of its small area occupation, large clearance and good landscape effect. However, due to the use of single-pillar pier, the transversal dimensions of the piers are relatively large. The influence of the piers on the stress of bent cap should be considered during the analysis of the bent cap stress. Taking the Shenzhong Channel Project as the background, various calculation models are used to calculate the stress on the wide pier single-pillar bent cap of substructure at the its approach bridge of flood discharge area in detail. The safety of various models to the design and the influence of wide pier on the stress of bent cap are compared and analyzed so as to put forward some suggestions on the design and calculation of bent cap.