Preserving Heritage Riverine Bridges: A Hydrological Approach to the Case Study of the Grau Bridge in Peru
Abstract
:1. Introduction
2. Materials and Methods
2.1. Historical Review
2.2. Preliminary Hydrological Diagnosis
2.3. Methodology
3. Results
3.1. Hydrological and Hydraulic Studies
3.2. Multi-Criteria Vulnerability Analysis
3.3. Strategic Recommendations
4. Discussion and Conclusions
Author Contributions
Funding
Data Availability Statement
Conflicts of Interest
References
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Characteristic | Value |
---|---|
Total length | 62.5 m |
Width | 10 m |
Number of arches | 4 |
Arch thickness | 1 m |
Minimum span (end arches) | 13 m |
Maximum span (central arches) | 9 m |
Material composition | Ashlar masonry |
Mortar quality | Low quality |
Maximum height | 17.3 m |
ID | Author | Year | Assessment Parameters Considered in the Research |
---|---|---|---|
B1 | Martinez et al. [46] | 2023 | The contamination of the Chili River is due to the increase in metal concentrations (B, Cu, Fe, Mn, and Zn) from rainwater runoff that flows into the ravines and converges in the Chili River. |
B2 | Espinoza and Booker [17] | 2023 | Environmental and physical vulnerability of bridges. Temperature in relation to climate change, water quality, bridge construction materials, proximity to settlements, flood gauge, foundation protection against scour, deck erosion, flooding, and compliance with current regulations. |
B3 | Pregnolato et al. [8] | 2022 | Hydrodynamic thrust forces in flooding. |
B4 | Liu et al. [47] | 2021 | Social parameters, e.g., the economy of the population, education level, and age, as well as safety facilities, shelters, and hospitals. |
B5 | Glass et al. [48] | 2020 | Type of housing and current data of the population in terms of economic and social risk. |
B6 | Garrote et al. [21] | 2020 | Material used in construction of the structure, water depth, and flood velocity. |
B7 | Bento et al. [49] | 2020 | Type and support material of the foundation, history of scour problems, type of river, and the importance of the bridge according to the traffic flowing over it. |
B8 | Akay and Baduna [50] | 2020 | Land use in the basin, surface condition, and frequency of flood recurrence. |
B9 | Geng et al. [51] | 2019 | Flood depth, submerged area and duration of flooding, population density, and rate of urbanization. |
B10 | Bhatkoti et al. [52] | 2016 | Climate change and the increase in impervious areas upstream. |
B11 | Ettinger et al. [22] | 2016 | Height ranges in terms of flooding, observed damage, and soil imperviousness. |
B12 | Bathrellos et al. [53] | 2016 | Slope of the study area, permeability, and vegetation cover of the soil. |
Scenario | Return Period (T) | Probability (1/T) | Flow Rate (m3/s) | Normal Depth (m) | Velocity (m/s) | Hydraulic Area (m2) | Water Mirror (m) | Total Shear Stress (N/m2) | Froude Number (Fr) |
---|---|---|---|---|---|---|---|---|---|
1 | 50 | 0.02 | 223.0 | 1.8 | 5.0 | 39.9 | 27.5 | 211.3 | 1.2 |
2 | 100 | 0.01 | 248.5 | 1.9 | 5.2 | 42.9 | 28.0 | 219.1 | 1.2 |
3 | 200 | 0.005 | 273.0 | 2.1 | 5.3 | 45.7 | 28.4 | 225.3 | 1.2 |
4 | 500 | 0.002 | 304.3 | 2.2 | 5.4 | 96.1 | 29.0 | 255.8 | 1.2 |
Identification | Evaluation | Score |
---|---|---|
A1 | The wetlands in the basin are gradually disappearing. | 4 |
A2 | The Chili River is one of the most polluted rivers in Peru due to total waste that exceeds the minimum permitted levels. | 5 |
A3 | The basin has a high exploitation of natural resources and pollution. | 4 |
A4 | Presence of small to medium-sized waste such as bottles, tires, and plastic bags. | 3 |
T1 | The Grau Bridge is built of ashlar and mortar. | 3 |
T2 | The Grau Bridge shows signs of deterioration such as cracks and fissures along the deck, pillars, and abutments. | 4 |
T3 | The Grau Bridge abutments are unprotected against extraordinary floods. | 5 |
T4 | The Grau Bridge has a clearance of 12.5 m, higher than the minimum permitted clearance of 2.5 m, according to current regulations. | 1 |
T5 | The Grau Bridge has a general scour of 2 m and a local scour of 4.9 m (total of 6.9 m), which exceed its foundation depth of 3.5 m. | 5 |
T6 | The Aguada Blanca dam is at approximately half of its total capacity due to the concentration of sediments throughout its operation. | 3 |
S1 | The areas near the Grau Bridge are commercial and agricultural, with no poverty rates. | 1 |
S2 | The population of Arequipa is poorly trained in disaster prevention and preparedness. | 4 |
S3 | The population of the city of Arequipa lives within 0.2 km of the Grau Bridge. | 5 |
S4 | The houses near the Grau Bridge are built of masonry and reinforced concrete. | 1 |
E1 | The Grau Bridge is 137 years old if dated from its inauguration in 1887. | 5 |
E2 | The Grau Bridge handles more than 10,000 vehicles per day. | 5 |
E3 | The bridge has been closed to vehicular traffic due to the increased flow of the Chili River. | 5 |
E4 | The water level has not exceeded the minimum level of the Grau Bridge deck. | 1 |
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Ccanccapa Puma, J.; Hidalgo Valdivia, A.V.; Espinoza Vigil, A.J.; Booker, J. Preserving Heritage Riverine Bridges: A Hydrological Approach to the Case Study of the Grau Bridge in Peru. Heritage 2024, 7, 3350-3371. https://doi.org/10.3390/heritage7070158
Ccanccapa Puma J, Hidalgo Valdivia AV, Espinoza Vigil AJ, Booker J. Preserving Heritage Riverine Bridges: A Hydrological Approach to the Case Study of the Grau Bridge in Peru. Heritage. 2024; 7(7):3350-3371. https://doi.org/10.3390/heritage7070158
Chicago/Turabian StyleCcanccapa Puma, Joel, Alejandro Víctor Hidalgo Valdivia, Alain Jorge Espinoza Vigil, and Julian Booker. 2024. "Preserving Heritage Riverine Bridges: A Hydrological Approach to the Case Study of the Grau Bridge in Peru" Heritage 7, no. 7: 3350-3371. https://doi.org/10.3390/heritage7070158