The ground force generated by a BLEVE is a hazard that has been seldom studied, even though BLEVE has been source of many research works in the past decades. However, emergency responders have been asking questions the risk and consequences of a BLEVE on a bridge and other critical infrastructures for a while, with no answer so far. Moreover, a tank truck accident in Bologna in August 2018 has shown that bridge collapse may result from such scenario.

This paper presents the experimental work done with a small scale apparatus reproducing realistic BLEVE failure with a cylindrical tube. Load cells were placed under the base plate holding the tube to measure the local ground force generated by the explosion. Forces from 10 kN to 55 kN were measured for a 50 mm diameter tube with 300 mm length failing at pressures from 10 to 32 Bar. The ground force signals are interpreted together with the imaging and internal pressure signal. The synchronization between violent boiling, repressurization in the vessel and strong ground force is clear through this comparison. Different ground force signals were observed depending on the fill level and weakened length of the tube. The maximum ground force and impulse vary almost linearly with failure pressure and liquid fill level. It is less clear for the influence of weakened/opening length of the tube. More data is required to conclude on this parameter influence.

尽管BLEVE在过去几十年中已成为许多研究工作的源头，但BLEVE产生的地面力却很少被研究。但是，紧急响应者已经问了桥上的BLEVE风险和后果以及其他关键基础设施一段时间了，到目前为止，还没有任何答案。此外，2018年8月在博洛尼亚发生的一辆油罐车事故表明，这种情况可能导致桥梁倒塌。

本文介绍了使用小型设备完成的实验工作，该设备再现了带有圆柱管的实际BLEVE失效。称重传感器放置在固定管的底板下方，以测量爆炸产生的局部地面力。对于直径为50 mm，长度为300 mm的管在10至32 Bar的压力下失效，测量了10 kN至55 kN的力。地面力信号与成像和内部压力信号一起被解释。通过该比较，可以清楚地知道剧烈沸腾，容器中的再加压与强大的地面力之间的同步性。观察到不同的地面力信号，具体取决于管的填充水平和减弱的长度。最大地面力和冲击力几乎与破坏压力和液体填充量成线性关系。对于管的弱化/张开长度的影响尚不清楚。需要更多数据才能得出此参数影响的结论。