Measurement data of rocking of single layer armour units measured by embedded sensors

Single layer randomly placed armour units are used in many rubble mound breakwaters around the world. For these armour layers, breakage of armour units due to rocking could be a major damage mechanism. This data set utilizes novel embedded IMU-based Rocking Sensors to obtain the first measurements of rocking impact velocities of single layer units. Physical model tests were performed on an armour layer with Xbloc^® units under irregular waves. A test series with five test runs with increasing wave height was repeated several times, with the nine instrumented units being positioned at three different elevations. Over 42 repeated measurements (realizations) of the rocking motion of a unit were obtained for each combination of unit elevation and wave height (640 in total). Additionally, pictures from a fixed position above the slope are provided to show the downslope settlement of the units, which influences the rocking behaviour.

全球诸多抛石防波堤均采用单层随机安放的护面块体。对于此类护面层而言，由块体晃动引发的破损或许是其主要的破坏机理。本数据集采用新型嵌入式惯性测量单元（Inertial Measurement Unit，IMU）基晃动传感器，首次获取了单层护面块体的晃动冲击速度实测数据。研究针对搭载Xbloc^®块体的护面层开展了不规则波浪作用下的物理模型试验。该试验系列包含5个波高逐级递增的试验工况，且重复开展多次，9个加装传感设备的块体被布置于3个不同高程位置。针对块体高程与波高的每一种组合，均获取了单块体晃动运动的42次以上重复测量（即实测复现次数）数据，总测量次数共计640次。此外，数据集还提供了从坡顶固定机位拍摄的影像，用以展示块体沿坡向下的沉降情况，该沉降情况会对块体的晃动特性产生影响。