Vulnerability assessment of buildings to lahar formation: Study case of the Santiago Xalitzintla village on the NE flank of the Popocatepetl volcano (Mexico)

作者：Moriano Tello Diana Elizabeth^*; Paredes Ruiz Paola Andrea; Cordoba Guerrero Gustavo; Delgado Granados Hugo

来源：Boletin de la Sociedad Geologica Mexicana, 2017, 69(1): 223-241.

• Structural vulnerability
• Probability of total destruction
• Dynamic pressure
• Lahar
• Popocatepetl Volcano
• Santiago Xalitzintla

Structural vulnerability from dynamic pressures due to the impact of lahars is analyzed in the town of Santiago Xalitzintla (Mexico). The process of vulnerability assessment was conducted independently from the hazard (lahar). For this end, every building was classified. The typification was developed taking into account the materials used in the construction of buildings, and how they contribute to its strength in two ways. a) Based on field work, by visiting the place in order to identify typologies and possible critical areas. b) By using the Google Earth ' s Street View tool as a complement, since it was not possible to identify all the structures in the visit due to several limiting factors in the direct recognition. The vulnerability was carried out in a semi-quantitative way, based on several researches which were used to elaborate a structural vulnerability map for total damage. We identified that 62 % of the edifications have low vulnerability, 16 % have medium vulnerability and the remaining 12 % have high vulnerability. However, there were some buildings that could not be identified (around 10 % of total) and were labeled as "no data".
By using total destruction probability curves, potential situations were made for Santiago Xalitzintla. From these curves, it is clear that the total destruction probability of the structures according to their type, changes depending of their dynamic pressures, whereby it is possible to evaluate different vulnerability scenarios on the locality.

• 出版日期2017