Designing and construction of “Struma” highway lot 3.3 – passings from km 397+000 to км. 420+624
| Client: | NATIONAL COMPANY "STRATEGIC INFRASTRUCTURE PROJECTS" |
| Architecture: | PARTERSHIP COMPANY "VIA PLAN - AMBERG" SOFIA |
| Main contractor: | CONSORTIUM "STRUMA - LOT 3.3" |
| Design: | Structures |
| Main structural material: | reinforced concrete |
| UNDERPASS 1 - at km. 400+220 | |
| Characteristics: | - non retaining open excavation with slopes; |
| - single span rigid box-type frame; | |
| - clear span distance - 9 m; | |
| - clear height of structure - 6 m; | |
| - 2 equal blocks, separated by expansion joint; | |
| - total length of the facility - 30,3 m; | |
| - highway traffic above the roof slab; | |
| - trapezoidal retaining walls at both ends of the facility; | |
| UNDERPASS 2 - at km. 402+140 | |
| Characteristics: | - non retaining open excavation with slopes; |
| - single span rigid box-type frame; | |
| - clear span distance - 9 m; | |
| - clear height of structure - 6,3 m; | |
| - 2 different blocks, separated by expansion joint; | |
| - total length of the facility - 36,6 m; | |
| - highway traffic above the roof slab; | |
| - trapezoidal retaining walls at both ends of the facility; | |
| UNDERPASS 3 - at km. 404+474 | |
| Characteristics: | - non retaining open excavation with slopes; |
| - single span rigid box-type frame; | |
| - clear span distance - 9 m; | |
| - clear height of structure - 6,7 m; | |
| - 2 equal blocks, separated by expansion joint; | |
| - total length of the facility - 30,3 m; | |
| - highway traffic above the roof slab; | |
| - trapezoidal retaining walls at both ends of the facility; | |
| UNDERPASS 4 - at km. 406+125 | |
| Characteristics: | - non retaining open excavation with slopes; |
| - single span rigid box-type frame; | |
| - clear span distance - 9 m; | |
| - clear height of structure - 6,3 m; | |
| - 2 equal blocks, separated by expansion joint; | |
| - total length of the facility - 36,7 m; | |
| - highway traffic above the roof slab; | |
| - trapezoidal retaining walls at both ends of the facility; | |
| CANTILEVER WALLS from km. 412+840 to km. 413+051 | |
| Characteristics: | - 6 different types with various lengths and heights; |
| - horizontal footings with inclined stems; | |
| - angle of inclination toward the back fill - 20÷30˚; | |
| - flat and smooth front face; | |
| - stepped variation in heights of different types of walls; | |
| - waterproof expansion joints at every 20 m; | |
| Phase/stage: | under construction |
