Data from the parametric analysis of multi-ring masonry arches using a limit analysis approach for the span of 5m

The dataset is produced by running a series of 360 simulations using the in-house code ALMA (<em>Analisi Limite Murature Attritive</em>) that implements the upper bound approach of limit analysis to detect the collapse multiplier and mechanism for masonry structures. This set of data contains the results of 120 simulations achieved for the multi-ring masonry arches for span of 5m with different level of parameters considered, namely size of blocks, span of the arch, ring number, interlocking coefficient and the friction angle. In order to simplify references to figures an acronym system is used and it follows a sequence of "<em>size_span_ring_interlock_friction</em>". Size takes attributes as <strong>S</strong>-small and <strong>B</strong>-big while span takes number attributes based on the span like <strong>S3</strong>, <strong>S5</strong>, <strong>S7</strong> for spans of <strong>3</strong>, <strong>5</strong> and <strong>7</strong> meters, respectively. Ring number similarly is based on the number of rings as <strong>R2</strong>, <strong>R3</strong>, <strong>R4</strong> and <strong>R5</strong> and interlock takes the following attributes, I<strong>00</strong>, <strong>I15</strong>, <strong>I35</strong> and <strong>I50</strong> for the interlocking percentage considered such that <strong>00</strong>-stacked, <strong>15%</strong>, <strong>35%</strong> and <strong>50%</strong>, respectively. Finally friction takes attributes following the angle of friction such as <strong>F25</strong>—low level, <strong>F30</strong>—medium level, and <strong>F35</strong>—high level. The acronym used for the equivalent one-ring arches is used as simply <strong>EQ</strong>. For example, the acronym “<em><strong>S_S7_R4_I35_F30</strong></em>" refers to the arch with small blocks, span of 7 meters, consisting of 4 rings and by blocks interlocked at 35% with a joint friction of 30^o. This database contains a <strong>*.txt</strong>, a <strong>*.vtk</strong> and a <strong>*.png</strong> file. In the .txt file the elapsed time and the collapse multiplier of each simulation can be found. The .vtk file contains all the geometry and displacement values of every masonry panel. Finally, the .png file presents the collapse mechanism obtained.本数据集通过内部自研代码ALMA（Analisi Limite Murature Attritive）运行360次系列模拟生成，该代码实现了极限分析的上限法，用于检测砌体结构的破坏乘数与破坏机制。本数据集包含120次模拟结果，针对跨度为5米的多环砌体拱，纳入了多种参数水平的变量，包括砌块尺寸、拱跨度、环数、咬合系数与摩擦角。为简化图表引用，本数据集采用了缩写命名系统，遵循<em>尺寸_跨度_环数_咬合系数_摩擦角</em>的序列格式。其中，尺寸参数分为<strong>S</strong>（小）和<strong>B</strong>（大）两类；拱跨度参数以对应跨度的数值标识，如<strong>S3</strong>、<strong>S5</strong>、<strong>S7</strong>分别对应3米、5米、7米跨度；环数参数以环数直接标识，如<strong>R2</strong>、<strong>R3</strong>、<strong>R4</strong>和<strong>R5</strong>；咬合系数参数的取值为<strong>I00</strong>、<strong>I15</strong>、<strong>I35</strong>和<strong>I50</strong>，分别对应0%（干砌）、15%、35%、50%的咬合百分比；摩擦角参数则依据摩擦角数值标识，如<strong>F25</strong>代表低水平摩擦角、<strong>F30</strong>代表中水平摩擦角、<strong>F35</strong>代表高水平摩擦角。针对等效单环拱的缩写标识为<strong>EQ</strong>。例如，缩写<em><strong>S_S7_R4_I35_F30</strong></em>指代砌块尺寸偏小、跨度7米、共4环、砌块咬合率35%且节点摩擦角为30°的拱结构。本数据库包含*.txt、*.vtk与*.png三类文件。其中，*.txt文件可查询每次模拟的耗时与破坏乘数；*.vtk文件包含所有砌体砌块的几何与位移数据；*.png文件则展示对应模拟得到的破坏机制。