The effectiveness of remedial measures for the stability of onshore buried pipelines against the uplift mechanism induced by soil liquefaction, in the event of an earthquake, is investigated through 1-g shaking table tests. This study aims at proposing mitigation solutions that may be an alternative to the already existing and currently adopted systems, accounting for a set of requirements that cannot be omitted in the context of long tracks and variable soil conditions, looking at the cost-effectiveness too. In this paper, the performance of three systems is described, which consist of a possible arrangement of drainpipes in a typical pipe trench, a gravel bag placed above the pipeline and possibly connected to each other, or geogrids installed horizontally in the soil deposit above the pipe. The working principle of these systems is to contrast the development of the mechanism responsible for the uplift of the embedded pipe and their performance is verified under repeated shaking, thus accounting for the multiple earthquakes that may occur in the time span of the pipe design life. Results of the model tests show that both gravel bag and geogrids performed well and could be employed as a remedial against uplift in the industry.

通过 1-g 振动台试验研究了在发生地震时陆上埋地管道对土壤液化引起的隆起机制的稳定性补救措施的有效性。本研究旨在提出缓解解决方案，这些解决方案可能是现有和当前采用的系统的替代方案，考虑到在长轨道和可变土壤条件下不能忽略的一组要求，同时也考虑成本效益。在本文中，描述了三个系统的性能，包括在典型管沟中可能布置的排水管、放置在管道上方并可能相互连接的砾石袋，或水平安装在管道上方土壤沉积物中的土工格栅。管道。这些系统的工作原理是对比埋管抬升机制的发展，并在反复震动下验证其性能，从而解释在管道设计寿命的时间跨度内可能发生的多次地震。模型测试结果表明，砾石袋和土工格栅均表现良好，可用作行业中的抗隆起补救措施。