拱桥的静力特点是在竖向荷载作用下,拱的两端不仅有竖直反力,而且还有较大的水平反力(拱端推力)产生。因此,拱桥从受力角度要求应具备良好的地形、地质和基础条件。但本桥桥址处为软土或砂粘土地基,按理不适应修建拱桥,但设计者综合考虑了周围环境景观等因素的要求,采取了在拱脚处设置两根斜撑杆的巧妙构思,克服了因拱脚水平推力所要求的重型基础和地基条件限制,使桥梁设计者感到耳目一新。 The static characteristic of the arch bridge is that under the vertical load, the two ends of the arch not only have the vertical reaction force, but also have larger horizontal reaction force (arch end thrust force). Therefore, the arch bridge from the force point of view should have good topography, geology and basic conditions. However, the bridge site for the soft clay or sand clay foundation, according to the reason not suitable for the construction of the arch bridge, but the designer considered the surrounding environment and other factors, the adoption of arch feet at the two diagonal strut of ingenious ideas, Overcoming the heavy foundations and foundation conditions required for the horizontal thrust at the foot of an arch, bridge designers feel fresh.