土工织物加筋柔性桥台合理间距的模型试验对比研究

由于台背路堤和桥台两者形成差异沉降,桥头跳车成为普遍且复杂的问题,对这一特殊路堤病害的成功处治尚不多见。近年来,加筋土结构的柔性桥台开始应用于工程实践,这种结构有可能在根本上防止桥头跳车的产生,但其加筋间距的确定具有较大的盲目性。本文对土工织物加筋柔性桥台进行了4组室内大模型试验,对不同加筋间距下柔性桥台的工程特性进行了详尽的对比分析。试验结果表明,土工织物加筋柔性桥台的合理间距为30～50cm。

Reasonable Interval of Geotextiles in Flexible Abutment by Model Test

Truck jumping caused by abutment's differential settlement is a common and complicated issue so far;there is no successful treatment.In recent years, a new type abutment-flexible abutment was applied in engineering, which may prevent differential settlement radically. But there is no theoretical method to determine the reinforcebar interval. In this article,4 groups of model tests were carried out for comparative analysis of flexible abutment engineering character.The tests indicated that the best reinforcebar interval should be between 30cm and 50cm.