ABSTRACT

In this paper, the unknown and peculiar construction technique employed in vernacular buildings of the Algerian region of Souf is addressed. Traditional architectures of this desert area are made of unusual building material, the Desert Rose stone. Also, typical buildings are covered with domes that outline a unique urban landscape included in the “Tentative List of UNESCO”. To pursue coherent safeguarding policies, constructive techniques are investigated through in situ surveys, sampling, and laboratory analyses that enabled characterisation of local materials. Petrographic observations revealed remarkable cohesion between blocks and mortar, which explains the satisfactory behaviour of a masonry realised with very irregular stone blocks. A preliminary analysis of the structural behaviour of a representative dome is carried out employing both a FEM simulation and the static approach of limit analysis. The results allow an interpretation of the observed crack patterns that show widespread fractures along the diagonals of the domes.

摘要

本文讨论了阿尔及利亚苏夫地区的乡土建筑中采用的未知和特殊的建造技术。这个沙漠地区的传统建筑是由不寻常的建筑材料沙漠玫瑰石制成的。此外，典型的建筑物覆盖着圆顶，勾勒出“联合国教科文组织暂定名录”中独特的城市景观。为了追求连贯的保护政策，通过现场调查建设性技术能够对当地材料进行表征的调查、取样和实验室分析。岩相观察揭示了砌块和砂浆之间的显着凝聚力，这解释了用非常不规则的石块实现的砌体的令人满意的行为。使用有限元模拟和极限分析的静态方法对代表性圆顶的结构行为进行了初步分析。结果可以解释观察到的裂缝模式，这些裂缝模式显示出沿着圆顶对角线的广泛裂缝。