Society for Earthquake and Civil Engineering Dynamics
Peru has a wealth of historic earthen architecture built after the arrival of the Spanish in the 16th century. However, little is known about the seismic behaviour of these buildings. This paper presents a decision-tree based diagnostic approach aimed at identifying the vulnerability of two traditional earthen buildings, and locating areas where strengthening can be implemented. The diagnosis is carried out in two stages; a preliminary diagnosis based on onsite observations, and a detailed, more quantitative diagnosis based on results of numerical analysis and experimental testing. At each stage, four parameters are assessed; the initial structural concept, the interaction between structural components, the quality of the connections, and the quality of the structural fabric. The effect of deterioration, and how this influences the other variables is also considered. The approach has been applied to two types of historic earthen buildings in Peru with very different structural systems. It is shown to be applicable to both building types, with only minor adaptations, and has proven to be a useful tool for identifying vulnerable aspects of the building.