Vulnerability assessment for reinforced concrete buildings exposed to landslides

Abstract

The methodologies available for the analytical quantification of the vulnerability of buildings which are subject to actions resulting from slope instabilities and landslides are relatively limited in comparison with other components of quantitative landslide risk assessment. This paper provides a general methodology for calculating the vulnerabilities of reinforced concrete frame structures that are subject to three types of slope instability: slow-moving landslides, rapid flow-type slides and rockfalls. The vulnerability is expressed using sets of fragility curves. A description of the general framework and of the specialised procedures employed is presented here, separately for each landslide mechanism, through the example of a single-bay one-storey reinforced concrete frame. The properties of the frame are taken into account as variables with associated uncertainties. The derived vulnerability curves presented here can be used directly by risk assessment practitioners without having to repeat the procedure, given the expected range of landslide intensities and for similar building typologies and ranges of structural characteristics. This permits the applicability of the calculated vulnerability to a wide variety of similar frames for a range of landslide intensity parameters

Landslide-Induced Damage Probability Estimation Coupling InSAR and Field Survey Data by Fragility Curves

“…The combination of landslide-induced damage on structure and infrastructure with the ground displacement allows definining the fragility curves of several structures, applying a methodology commonly applied on different engineering fields [50][51][52][53][54][55][56]. These curves represent the probability of exceeding a given damage level in a building or infrastructure as a function of ground displacements.…”

Debris flow damage incurred to buildings: an in situ back analysis

“…The type of damage caused by a debris flow event also depends on the building type. For example, reinforced concrete (RC) frame structures may experience damage to both their primary load-bearing (the frame) and secondary load-bearing systems (infill panels, Mavrouli et al, 2014). In contrast, for masonry structures, the load-bearing wall panels will be subjected to the impact of the debris flow.…”

“…Another important aspect, which is common to all structural types, is the role of the openings as the weakest link within a building. Usually, the doors and windows are the first elements to be swept away by a flow, which enables it to infiltrate a building (Mavrouli et al, 2014). In recent years, a number of studies have been performed with the aim of evaluating building vulnerability to debris flows based on expert judgement (Bell and Glade, 2004), damage observed and losses incurred due to past events (Akbas et al, 2009;Fuchs et al, 2007;Quan Luna et al, 2011).…”

Analytic Back Calculation of Debris Flow Damage Incurred to a Masonry Building: The Case of Scaletta Zanclea 2009 Event

“…The type of damage caused by the debris flow depends also on the building type. For example, the reinforced concrete frame structures may undergo damage both in their primary load-bearing system (the frame) and also in the secondary load bearing system (infill panels, Mavrouli et al 2014). For masonry structures instead, the load-bearing wall panels are going to be subjected to the debris flow impact.…”

“…Another important aspect, common to all structural types, is the role of the openings as the weakest link within the building. Usually, the doors and windows are the first elements to be swept away by the flow letting the flow infiltrate inside the building (Mavrouli et al 2014). In the recent years, quite a few studies have been performed with the aim of evaluating the building vulnerability to debris flow based on expert judgment (Bell and There have been few attempts for quantifying the building vulnerability to debris flow through analytical models.…”