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为了了解带地梁的新型无缝桥梁在温度变化下吸纳梁体变形的能力及接线路面的裂缝分布和发展规律,推导了带地梁无缝桥梁在温度作用下的内力与变形计算公式,编译了相应的接线路面配筋计算程序,进行了足尺带地梁无缝桥梁的试验研究,同时对比了带地梁无缝桥梁试验结果与理论计算结果。结果表明:带地梁的新型无缝桥梁能很好地传递梁体变形,实现对梁体变形的吸呐;按照程序的计算结果进行接线路面的配筋设计是安全的。
In order to understand the ability of the new seamless bridge with ground beam to absorb the deformation of the beam under the temperature change and the crack distribution and development law of the connected road surface, the formula for calculating the internal force and deformation of the seamless bridge with the ground beam under temperature is derived. The corresponding calculation program of the connection reinforcement of the pavement was carried out, and the experimental research on the seamless bridge with full length and ground beams was carried out. At the same time, the experimental results and the theoretical calculation results of the seamless bridges with the ground beams were compared. The results show that the new type of seamless bridge with ground girder can transfer the deformation of the beam well, and realize the absorption of beam deformation. According to the calculation results of the program, it is safe to design the reinforcement of the wiring pavement.