Ourille River Viaduct (case study)

The Ourille River Viaduct is a structure located in the province of Ourense, Spain, which serves as a support for the group of roads that communicates the region of Galicia, Spain, with the Portuguese border. The bridge consists of two separate decks of four simply supported spans. The transverse section is composed of four beams 1.90 m in height and separated at an interval of 3.55 m with a prestressed H-shaped cross-section beam. Above the same, a 0.25-m-thick slab is located so that the total height of deck is equal to 2.15 m. The span studied corresponds to span two on the right-hand side of the bridge, whose deck has a total length of 33.05 m and a width of 12.14 m.

Object description

(No object description available.)

Civil engineering type

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Road network Bridge

Year of construction

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Composed of materials

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Prestressed concrete

Location coordinates

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Country

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Spain

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Object analysis

The aim principal is to provide an easy and practical methodology that allows the conversion of point clouds into finite-element method (FEM) models of bridges so that they can take the benefit of the precise geometrical description obtained from point cloud data. Thus, these models can be used later to carry out a structural assessment of an existing bridge.

Case type

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Research

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Object state

Previously, a Lidar data collection is carried out, to which a series of corrections are applied to both the noise and the point clouds themselves to generate files that allow further optimization of the mathematical models. Subsequently, two models are created. The first is a three-dimensional solid element model that makes use of the geometric model directly obtained after the point cloud processing steps. The second structural model is a more simplified approach in which a concrete slab is modeled as a shell structural element and the beam elements are considered for the discretization of the concrete beams. The mechanical properties of the concrete beams are readily obtainable from the geometric pattern model.

Observed deterioration processes

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Observed damage types

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Performance indicators

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Material mechanical properties, Spatial properties (concrete cover/duct voids)

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Documents

This case study was contributed by Gabriel Suárez of Universidad De Vigo. Last edited by technical staff.