【摘要】 目的 为了研究不同形状的检查井井室部分在汽车荷载振动下的变形情况，探究井室形状对检查井稳定性影响，改善检查井沉降变形问题。方法 利用多变频电磁振动台对方形、圆形检查井井室模型，分别进行了模拟汽车荷载振动下的扫频、定频试验，并在模型的砌层和内壁布设应变测点，用数码相机记录试验过程中模型的变形、破坏过程，得到了两种形状的检查井井室在汽车荷载振动下产生的应变特征。结果 在相同的汽车荷载振动频率下，两种形状的检查井井室砌层产生的应变都比井室内壁大；方形检查井井室较圆形产生的应变更大，且应变峰值出现的时间更早；在持续的低频汽车荷载振动下，方形检查井井室比圆形更容易发生破坏。结论 圆形检查井结构较方形检查井更稳定，不易受损破坏。因此，在工程实践中，要考虑道路实际情况选择合适形状的检查井及其材料，研究结果对检查井沉降变形的防治具有一定的参考与借鉴意义。更多还原

【Abstract】 Objective To study the deformation of different shapes of inspection well chambers under vehicle load vibration, explore the influence of their chamber shape on the stability of inspection wells, and address the settlement and deformation problem of inspection wells. Methods Both frequency sweeping and frequency fixing tests under simulated vehicle load vibration were carried out on square and circular inspection well chamber models by using a multi-variable frequency electromagnetic shaker. Strain gauges were installed in the masonry layer and inner walls of the models, while the deformation and damage process of the model were recorded by a digital camera during the test. Strain characteristics of both chamber types under vibration were analyzed. Results Under the same vibration vehicle load, the strainin masonry layers was larger than that in inner walls. Square chambers exhibited higher strains and earlier peak strain occurrence compared to circular ones. Under sustained low-frequency vibration, square chambers showed higher susceptibility to damage. Conclusion Circular inspection wells demonstrated superior structural stability and damage resistance. Engineering practice should prioritize the actual situation of the road when selecting appropriate inspection well materials. The findings provide guidance for mitigating settlement and deformation of inspection wells.更多还原