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.本数据集通过自研代码ALMA（<em>Analisi Limite Murature Attritive</em>）运行360组仿真实验生成，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组针对跨度为5米的多环砌体拱的仿真结果，所涉参数涵盖砌块尺寸、拱跨度、环数、咬合系数与摩擦角的不同水平。 为简化图表引用，本数据集采用缩写命名系统，命名序列遵循<em>size_span_ring_interlock_friction</em>格式。其中，尺寸参数分为两类：<strong>S</strong>代表小尺寸、<strong>B</strong>代表大尺寸；跨度参数以实际跨度数值命名，如<strong>S3</strong>、<strong>S5</strong>、<strong>S7</strong>分别对应3米、5米、7米跨度。环数参数同理，以环数命名为<strong>R2</strong>、<strong>R3</strong>、<strong>R4</strong>、<strong>R5</strong>；咬合系数对应咬合百分比，<strong>I00</strong>代表无咬合（叠放状态）、<strong>I15</strong>代表15%咬合、<strong>I35</strong>代表35%咬合、<strong>I50</strong>代表50%咬合。 摩擦角参数按角度水平划分为<strong>F25</strong>（低水平）、<strong>F30</strong>（中水平）、<strong>F35</strong>（高水平）。针对等效单环拱，采用缩写<strong>EQ</strong>进行指代。 例如，缩写<em><strong>S_S7_R4_I35_F30</strong></em>指代的是采用小尺寸砌块、跨度7米、共4环、砌块咬合率35%且节点摩擦角为30°的砌体拱。 本数据库包含三类文件：<strong>*.txt</strong>、<strong>*.vtk</strong>与<strong>*.png</strong>。其中，<strong>*.txt</strong>文件存储了每组仿真的耗时与破坏乘数；<strong>*.vtk</strong>文件包含了所有砌体砌块的几何形状与位移数据；<strong>*.png</strong>文件则展示了仿真得到的破坏机制。