根据现浇桥梁支撑体系组合类型,设计现浇箱梁蟹钳式自锁三角形钢管支架施工工艺。通过软件模拟及力学试验确定三角钢管支架细部连接结构,并进行了加压试验。实验结果表明:三角钢管支架横向抗变形能力,支架的强度、刚度、稳定性好,可在城市曲线大荷载现浇桥梁临时支撑体系中使用。 According to the combination type of cast-in-place bridge support system, the construction process of the in-situ box crab-clamp self-locking triangular steel pipe support was designed. Through the software simulation and mechanical test, the detail connection structure of the triangular steel pipe support was determined and the pressure test was carried out. The experimental results show that the lateral deformation resistance of the triangular steel pipe support and the strength, rigidity and stability of the support are good and can be used in the temporary support system of the cast-in-place concrete bridge with urban curve and large load.