{"id":27882988,"url":"https://github.com/kmoraza/optimal_bridge_design_using_aco","last_synced_at":"2025-08-04T09:32:36.885Z","repository":{"id":290012300,"uuid":"957606651","full_name":"KMORaza/Optimal_Bridge_Design_using_ACO","owner":"KMORaza","description":"Optimizing structural design of bridge using ant colony optimization","archived":false,"fork":false,"pushed_at":"2025-04-26T09:31:42.000Z","size":14,"stargazers_count":0,"open_issues_count":0,"forks_count":0,"subscribers_count":1,"default_branch":"main","last_synced_at":"2025-05-05T06:11:34.847Z","etag":null,"topics":["ant-colony-optimization","bridge-design","civil-engineering","engineering-mechanics","mechanical-engineering","physics","structural-design","structural-engineering","structural-optimization"],"latest_commit_sha":null,"homepage":"","language":"Java","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":null,"status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/KMORaza.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":null,"code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null,"governance":null,"roadmap":null,"authors":null,"dei":null,"publiccode":null,"codemeta":null,"zenodo":null}},"created_at":"2025-03-30T19:17:14.000Z","updated_at":"2025-04-26T09:31:45.000Z","dependencies_parsed_at":"2025-04-26T10:39:27.684Z","dependency_job_id":null,"html_url":"https://github.com/KMORaza/Optimal_Bridge_Design_using_ACO","commit_stats":null,"previous_names":["kmoraza/optimal_bridge_design_using_aco"],"tags_count":0,"template":false,"template_full_name":null,"purl":"pkg:github/KMORaza/Optimal_Bridge_Design_using_ACO","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/KMORaza%2FOptimal_Bridge_Design_using_ACO","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/KMORaza%2FOptimal_Bridge_Design_using_ACO/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/KMORaza%2FOptimal_Bridge_Design_using_ACO/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/KMORaza%2FOptimal_Bridge_Design_using_ACO/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/KMORaza","download_url":"https://codeload.github.com/KMORaza/Optimal_Bridge_Design_using_ACO/tar.gz/refs/heads/main","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/KMORaza%2FOptimal_Bridge_Design_using_ACO/sbom","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":268675515,"owners_count":24288285,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2022-07-04T15:15:14.044Z","status":"online","status_checked_at":"2025-08-04T02:00:09.867Z","response_time":79,"last_error":null,"robots_txt_status":"success","robots_txt_updated_at":"2025-07-24T06:49:26.215Z","robots_txt_url":"https://github.com/robots.txt","online":true,"can_crawl_api":true,"host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":["ant-colony-optimization","bridge-design","civil-engineering","engineering-mechanics","mechanical-engineering","physics","structural-design","structural-engineering","structural-optimization"],"created_at":"2025-05-05T06:10:55.765Z","updated_at":"2025-08-04T09:32:36.814Z","avatar_url":"https://github.com/KMORaza.png","language":"Java","funding_links":[],"categories":[],"sub_categories":[],"readme":"## Optimales Brückendesign mittels Ameisenkolonie-Optimierung (Optimizing structural design of bridge using ant colony optimization) \n\n### Overview\n  - Load Requirements:  \n    - Dead Load = 200 kN  \n    - Live Load = 800 kN  \n    - Dynamic Load = 300 kN  \n  - Environmental Factors:\n    - Wind Load = 100 kN  \n    - Seismic Factor = 0.5  \n  - Cost Constraint: Max Budget = $5000  \n  - Span Length: Between 20 m and 60 m  \n  - Components: 10 structural elements  \n\n### Objective\n \n Minimize:  \n    1. Total weight of the bridge  \n    2. Construction complexity  \n\nSubject to:  \n    1. Load capacity ≥ Total static load (Dead + Live)  \n    2. Dynamic load capacity ≥ Required dynamic load  \n    3. Cost ≤ $5000  \n\n---\n\n### Solution Steps\n\n  - Define Material Choices  \n\n| Material   | Density (g/cm³) | Strength (MPa) | Cost ($/kg) | Fatigue Resistance | Corrosion Resistance |\n|------------|----------------|----------------|-------------|-------------------|----------------------|\n| Steel      | 7.85           | 500            | 50          | 0.8               | 0.6                  |\n| Aluminum   | 2.7            | 300            | 80          | 0.7               | 0.8                  |\n| Concrete   | 2.4            | 40             | 20          | 0.9               | 0.5                  |\n\n   - Determine Cross-Sectional Areas\n\n  Possible cross-sectional areas:  A ∈ {10, 20, 30, 40, 50} cm²\n\n   - Choose Component Heights\n\nHeight range:  h ∈ [1, 5] m\n\n  - Select Span Length\n\nDiscrete options: L ∈ {20, 30, 40, 50, 60} m\n\n  - Assign Critical vs. Non-Critical Components\n    - Critical components (e.g., main beams) must support the primary loads.  \n    - Non-critical components (e.g., bracings) contribute to stability.  \n\n  - Structural Analysis   \n    - Weight Calculation: W = Density × Length × A × 10^(-3) kg \n    - Strength Check: Max Load Capacity = min(Strength×A) × (Redundancy Factor/Safety Factor), where Redundancy Factor = 1.2, Safety Factor = 1.5\n    - Dynamic Load Check: Fatigue Limit = Fatigue Resistance × Strength  \n    - Environmental Stability: Env. Factor = 1 − (Wind Load/1000 + Seismic Factor/10); Adjusted Load Capacity = Max Load Capacity × Env. Factor\n\n  - Cost Calculation\n    - Total Cost = ∑(Material Cost × Weight)\n\n  - Fitness Evaluation\n    - If all constraints are satisfied: Fitness = Total Weight + (Construction Complexity × 100) \n    - Else: Fitness = ∞ (invalid solution)\n\n---\n\n### **Sample Calculation**  \n \n- Span Length (L): 40 m  \n- Components: \n  - 5 critical (steel, A = 30 cm², h = 3 m)  \n  - 5 non-critical (aluminum, A = 20 cm², h = 2 m)  \n- Component Length: Length per component = 40/5 = 8 m\n- Weight:\n   - Steel: 7.85 × 8 × 30 × 10^(-3) = 1.884 kg  \n   - Aluminum: 2.7 × 8 × 20 × 10^(-3) = 0.432 kg \n   - Total Weight = 5 × 1.884 + 5 × 0.432 = 11.58 kg \n- Strength Check:\n   - Steel: 500 × 30 = 15000 kN  \n   - Max Load Capacity = (15000 × 1.2)/1.5 = 12000 kN  \n   - Required Static Load = 200 + 800 = 1000 kN ⟶ **OK**  \n- Dynamic Load Check:\n   - Fatigue Limit = 0.8 × 15000 = 12000 kN  \n   - Required Dynamic Load = 300 kN ⟶ **OK**  \n- Environmental Stability:  \n   - Env. Factor = 1 - (100/1000 + 0.5/10) = 0.85   \n   - Adjusted Capacity = 12000 × 0.85 = 10200 kN \u003e Wind Load (100 kN) ⟶ **OK**  \n- Cost:  \n   - Steel: 50 × 1.884 = 94.2$  \n   - Aluminum: 80 × 0.432 = 34.56$  \n   - Total Cost = 5 × 94.2 + 5 × 34.56 = 643.8$  \u003c $5000 ⟶ **OK**  \n- Fitness:\n   - Construction Complexity 10/50 = 0.2   \n   - Fitness = 11.58 + (0.2 × 100) = 31.58 \n\n---\n\n### **Optimal Solution**  \n- After evaluating multiple designs, the best solution is selected based on:  \n  - Minimum Fitness Value (lowest weight + complexity).  \n  - Constraint Satisfaction (loads, cost).  \n- Solution  \n  - Span Length = 40 m  \n  - Materials = Steel (critical), Aluminum (non-critical)  \n  - Cross-Sectional Areas = 30 cm² (critical), 20 cm² (non-critical)  \n  - Total Weight = 11.58 kg  \n  - Cost = $643.80  \n  - Fitness = 31.58  \n\n---\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fkmoraza%2Foptimal_bridge_design_using_aco","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fkmoraza%2Foptimal_bridge_design_using_aco","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fkmoraza%2Foptimal_bridge_design_using_aco/lists"}