PSI - Issue 62

Nicola Perilli et al. / Procedia Structural Integrity 62 (2024) 538–545 Nicola Perilli, Stefano Stacul, Massimiliano Lombardi, Nicola Nenci, Nunziante Squeglia / Structural Integrity Procedia 00 (2019) 000 – 000 7

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Table 4. Modified Field Sheet Form (this work) according to the proposed workflow. Modified Version of the Field Sheet Form (this work)

C ONTEXT CHARACTERIZATION SUB - SECTIONS

C ONTENTS

Physiographical unit Morphology of the site

Geomorphological context [cfr. (1) in Tab. 3]

Lithostratigraphic units and/or Lithological units Lithotechnical units

Geological context [cfr. (4) in Tab. 3]

Engineering soil Rock mass

Vegetation cover Land Use

Land Use [cfr. (8) in Tab. 3]

D OCUMENTED L ANDSLIDE AND F IELD S URVEY SUB - SECTIONS

C ONTENTS

Documented Landslide (Inventories)

Documented Landslide and Field Survey [cfr. (3) in Tab. 3]

Recognized Potential

Landslide Field Survey

L ANDSLIDE C HARACTERIZATION SUB - SECTIONS

C ONTENTS

Localization [cfr. (9) in Tab. 3] Type of phenomenon [cfr. (5) in Tab. 3] Distribution of the activity [cfr. (7) in Tab. 3]

Recognized/Potential landslide

E STIMATION OF PRIMARY AND SECONDARY PARAMETERS SUB - SECTIONS C ONTENTS

Estimate of the

- state of activity parameter, P A (Recognized landslides) - degree of criticality parameter, P C (Potential landslides)

Primary parameters

[cfr. (10a) in Tab. 3] Estimate of the landslide velocity parameter, P V [cfr. (10b) in Tab. 3] Estimate of the landslide size (magnitude) parameter, P M [cfr. (10c) in Tab. 3] Extent of the interference [cfr. (11a) in Tab. 3] Monitoring Systems [cfr. (3c) in Tab. 3] Mitigation measures [cfr. (3d) in Tab. 3] Overall Reliability of the parameters assessment [cfr. (11b) in Tab. 3]

Secondary Parameters

3. Conclusive remarks To fill some gaps of the current version of the Italian Guidelines on existing bridges, the Authors define three key areas to be investigated for the: accurate characterization of the geomorphological, geological context and geomechanical properties of the materials; identification and characterization of Recognized or Potential landslides; correct evaluation of the parameters needed to assess the Landslide Class of Attention. The investigation of the Diagnostic and the Geomorphological Significative Areas is mainly based on a desk study and allows to capitalize all the geomorphological and geological data already available. The investigation of the Relevant Area and the surrounding part of the Geomorphological Significative Area, mainly based on field work, allows to: a) refine the survey of the topographic surface characteristics and improve the characterization of the lithotechnical units; b) identify the presence or absence of Recognized or Potential landslides, and (if present) characterize the type of landslide; c) correctly evaluate primary and secondary