Low-rise buildings and transport facilities selection
2016
- METROSTATION „VITOSHA“
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METRO – SOFIA, II-ND LINE, METROSTATION „VITOSHA“ (MS II-12) – PROJECT FOR EXTENSION OF SECOND LINE PAST METROSTATION “JAMES BOURCHIER” (MS II-11)
Client: SOFIA MUNICIPALITY / "METROPOLITEN" Jsc. Architecture: "KONKURENT-90" Ltd. Main contractor: ALLIANCE "METRO CHERNI VRAH 2013" Facility length: 217,40 m Facility width: 18,80 m Facility height (depth): 10,75 m Design: Architecture, WSS, Geodesy, Structures, HVAC, Plan & Profile Built-up Area (BUA): 3 760 m2 Excavation with retaining structure: RC diaphragm walls Building technology: "Top-down" Main structural material: cast in place reinforced concrete Characteristics: - "Milan Method" roof slab; - 4 blocks and a pedestrian tunnel, separated by expansion joints; - (external) retaining structure - diaphragm walls supported by the roof slab; - internal structure - walls, columns, slabs and beams; - 2 side platforms; - 2 entrance-halls at both ends of the station; - 7 different exits; Phase/stage: in operation since 2016
- TRANSPORT FACILITIES – “STRUMA” HIGHWAY
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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: cast in place 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: - изпълнение по открит способ в неукрепен изкоп с откоси; - 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: - изпълнение по открит способ в неукрепен изкоп с откоси; - 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
2015
- PEDESTRIAN BRIDGE TO SOFIA TECH PARK (above “Tsarigradsko shose“ blvd.)
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“EXPERIMENTARIUM AND VISITOR’S CENTER WITH PEDESTRIAN BRIDGE” (BUILDING B) IN SCIENCE AND TECHNOLOGY PARK, SIA (SCIENTIFIC AND INDUSTRIAL AREA) EAST, „KARO“, MLADOST, MUNICIPALITY OF SOFIA
Client: "SOFIA TECH PARK" Jsc. Architecture: arch. Ivo Petrov Main contractor: PARTERSHIP COMPANY "EXPO TECH PARK" Bridge deck length: 51 m (additional steel structure for bridge widening) Bridge deck width: 2 m (additional steel structure for bridge widening) Bridge deck height (thickness): 1 m (additional steel structure for bridge widening) Design: Structures Building technology: steel superstructure (bridge deck) over a reinforced concrete substructure (walls) Main structural material: cast in place reinforced concrete and structural steel Characteristics: - 5 single supporting pillars (walls) across the bridge and above; - additional steel structure for bridge widening between the inner three pillars; - 2 RC staircases with multiple cantilevered stringers (treads and risers only with no stringers); - 2 elevator shafts - RC foundation and vertical steel frame structure; Phase/stage: in operation since 2016
2014
- METROSTATION “BUSINESS PARK SOFIA”
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METRO – SOFIA I-ST LINE; METROSTATION “BUSINESS PARK SOFIA” (MS I-16), CLIENT: "METROPOLITAN" Plc.; CONTRACTOR.: “GEOTECHMIN” Ltd.
- situated in the northwest part of the complex Business Park Sofia, under the intersection of blvd. “Alexander Malinov” and str.“Samara”;
- total length - 166m; clear width of the concourses – 19.0m, width of the platform area – 16.2m;
- two concourses at both ends of the station – each with two staircases;
- two underground parking levels with two adjacent inside ramps and one outside ramp;
- third underground floor with platforms at both sides of the station;
- railway ~12.5m under the ground level;
- retaining of the excavation – diaphragm walls with width of 60 cm; propped by anchors;
- inner structure – reinforced concrete walls; four longitudinal blocks separated by expansion joints; flat slabs; reinforced concrete columns; diagonal “N”-shaped supporting joints;
- different methods of construction: the north concourse is built by open cut-and-cover method; the south concourse and the platform area – by “top-down” method; reinforced concrete diaphragm walls, supported by the intermediate slab at the level between second and third underground floor;
- the roof slab and the slabs at first and second underground level have spans of 17m;
- the diagonal “N”-supports – placed between the parking spaces, reducing the span length of the slabs;
- the slab at the south concourse is additionally supported by two rows of cast in-situ piles (ϕ60cm) and is anchored to the diaphragm walls;
- flat foundation slabs with thickness of 70cm;
- in exploitation since 2015.
- METROSTATION “AKAD. AL. TEODOROV-BALAN”
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METRO – SOFIA – 1-ST LINE, METROSTATION “AKAD. AL. TEODOROV-BALAN” (MS I-15), CLIENT: "METROPOLITAN" Plc.; CONTRACTOR.: “GP GROUP” Ltd.
- the metrostation is parallel to blvd.“Aleksander Malinov”; its north part is situated under the intersection of str. “Akad Aleksander Teodorov-Balan”and str.“D-r Atanas Moskov”.
- total length 166.5m; platform length – 100m;
- the whole station is situated in horizontal curve line;
- northern concourse with two staircases; middle platform part with two platforms along both sides; south concourse with two entrance/exit staircases;
- width – 22m at the concourse parts; 15.25m – at the platforms;
- the concourses are designed with two underground levels – the first one for passengers, the second one for technical rooms;
- structure – reinforced concrete walls, columns, flat slabs;
- north concourse – open cut-and-cover method; doubled structure with diaphragm walls, 60cm thick;
- flat foundation slabs with thickness of 60cm;
- roof slabs of the concourses – thickness 55-70cm, supported by walls and intermediate columns;
- roof slab in the platform area with thickness 70-80cm, supported by the walls at both sides;
- north concourse – executed by open cut-and-cover method;
- south concourse level and platform part of the station – open excavation with slopes and set-backs, according to the geological conditions;
- in exploitation since 2015.
- METROSTATION “ALEKSANDER MALINOV”
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METRO – SOFIA – 1-ST LINE, METROSTATION “ALEKSANDER MALINOV” (MS I-14), CLIENT: "METROPOLITAN" Plc.; CONTRACTOR.: “GP GROUP” Ltd.
- the station is situated under blvd.“Aleksander Malinov”; the northern part is under the intersection with str.“Filip Avramov”; the southern part is under the intersection with str. “St. Kipriyan”
- total length 171m; length of platform – 90m;
- north concourse with four staircases and two lifts; middle platform part with two platforms on both sides; south concourse with two entrance/exit staircases and two lifts;
- width – 21.5m at the concourses; 14.8m – at the platforms;
- the concourses are designed with two underground levels, the first one is for passengers, the second one - for technical rooms;
- the middle part has a platform level for passengers and a level under the platform - for installations;
- reinforced concrete structure – columns, flat slabs, walls under the platforms, diaphragm walls along the outer perimeter for retaining of the excavation - 60cm thick; joints between them and the slabs – by reinforced concrete dowels;
- roof slab of the concourses with thickness of 55-70cm; supported by diaphragm walls and columns;
- roof slab in the platform part with thickness 70-80cm; supported by diaphragm walls at both ends;
- north concourse – executed by open cut-and-cover method;
- south concourse and platform part of the station – by “top-down” method; order of execution: roof slab concreted on the terrain, supported by pre-executed diaphragm walls; the excavation is performed under the roof slab;
- in exploitation since 2015.
2013
- METROSTATION “ISKARSKO SHOSE”
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METRO – SOFIA – 1-ST LINE, METROSTATION “ISKARSKO SHOSE” (MS I-21), CLIENT: "METROPOLITAN" Plc.; CONTRACTOR.: “TRACE GROUP HOLD” Plc.
- the south-west part of the metrostation is situated under the intersection of blvd.“Iskarsko Shose” and blvd. “Kr. Pastuhov” and the north-east part of the station is under the industrial zone “Gara Iskar”;
- pedestrian underpass at the north-west end of the station (over the metro tunnel) – underground connection with the new-built train station “Gara Iskar”;
- total length - 144m; length of the platform – 87m;
- south-west concourse with three staircases and two elevators; middle platform part with platforms at both sides; north-east additional level with two entrance/exit staircases and one elevator;
- width – 22.1m and 18.1m at the concourse areas; 15.1m for the platforms;
- the concourses are designed with two underground levels – first for passengers and second for technical rooms;
- the middle part is with platform level for passengers and level under the platform for installations;
- the railway is situated ~9m under the ground level;
- pedestrian underpass with length of 97m – three staircases and one elevator near the train station;
- reinforced concrete structure – walls, columns, flat slabs; doubled structure with diaphragm walls along the outer perimeter for retaining of the excavation – thickness 60cm;
- flat foundation slab with thickness of 50cm;
- roof slab of the concourses with thickness 50-60cm, supported by diaphragm walls at the ends and intermediate columns (pre-executed piles ϕ 60cm);
- roof slab of the platform part with thickness 70-80cm; supported by diaphragm walls at both sides;
- the south-west concourse and the platform part of the station are built by “top-down” method: roof slab concreted on the terrain and supported by pre-executed diaphragm walls and piles, than the excavation is performed under the roof slab;
- the north-east concourse, pedestrian underpass and metro tunnel are executed with with open cut-and-cover method;
- in exploitation since 2015.
- METROSTATION “DRUZHBA”
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METRO – SOFIA – 1-ST LINE, METROSTATION “DRUZHBA” (MS I-20), CLIENT: "METROPOLITAN" Plc.; CONTRACTOR.: “STANILOV” Ltd.
- The metrostation is situated between blvd.“Tzvetan Lazarov” and str. “Kapitan Dimitar Spisarevski”, in open free area without adjacent buildings, easy accessible;
- total length 144m; length of the platform – 97m;
- south concourse with two staircases and one elevator; middle platform part with two platforms at both sides; north concourse with one entrance/exit staircase and one elevator;
- width – 22.5m for the concourses and 15.5m for the platforms;
- the concourses are designed with two underground level – first one for passengers and second one for technical rooms;
- railways ~10m under the ground level;
- in the middle platform part of the station the roof slab is partially executed at lower level to allow the transition of the highway heating pipes – ϕ1400 and ϕ1000mm;
- structure – reinforced concrete flat slabs, columns and walls along the perimeter;
- flat foundation slab with thickness 65cm;
- roof slab with thickness 60-75cm;
- executed by open cut-and-cover method, according to the geological conditions; the slope is treated with sprayed concrete and soil anchors;
- in exploitation since 2015.
- ROAD JUNCTION "SOFIA RING ROAD – SLIVNITSA Blvd."
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ROAD JUNCTION "SOFIA RING ROAD – SLIVNITSA Blvd.", CLIENT: ROAD INFRASTRUCTURE AGENCY; CONTR: CONSORTIUM “TRACE SRR”
- three-levels road junction (part-underground, ground - and high level with overpasses);
- the underground level is Sofia Ring Road;
- the overpass level is blvd. “Slivnitza”;
- ground level – roundabout between SRR and blvd. “Slivnitsa”;
- direct local roadways;
- design of all main elements and facilities of the road junction; for the estacades another structural design is developed;
- main part of the design – ramps and two round bridges;
- reinforced concrete structure;
- the two bridges are designed with the so-called “top-down”method (excavation works for the ramps, in the middle part of the roundabout and under the bridges are made under their slabs);
- the bridges are two-spanned frames with length of each span 14m.;
- stiff connection between the superstructure and the substructure of the bridges;
- the sidewalks are part of the slab structure;
- the structure will be finished by the end of 2014.
- ROAD JUNCTION “LAVOV MOST”
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TRANSPORT ROAD JUNCTION “LAVOV MOST”, CLIENT: SOFIA MUNICUPALITY, CONTR: CONSORTIUM “LAVOV MOST” – “PATPROJECT 2000” Ltd.
- three-levels road junction with three types of public transport – vehicle, tram and subway);
- two highways along blvd “Slivnitza”, that go in tunnels under the ground and above the subway station;
- roundabout on the ground level connecting the highways with blvd. “Knyaginya Maria Luiza”;
- two new round bridges above the river “Vladayska”;
- the tram railroad remains along the bridge “Lavov most”;
- the structure is designed from cast in-situ reinforced concrete;
- the construction is designed as separate blocks with deformation joints;
- additional design of retaining structures, reinforced concrete collectors, shafts and steel bridges (for ingeneering infrastructure)
- in operation since 2014.
- SOFIA RING ROAD: SOUTHERN ARC
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SOFIA RING ROAD: SOUTHERN ARC – BRIDGES AND FACILITIES - BETWEEN “MLADOST IV” AND BLVD. “TZARIGRADSKO SHOSE”; CLIENT: SOFIA MUNICUPALITY/ MUNICIPAL ENTERPRISE "SOFPROEKT – MASTER URBAN SPATIAL DEVELOPMENT PLAN"; PHASE: INITIAL DESIGN
2012
- INTERSECTION “AKAD. IVAN EVSTRATIEV GESHOV” Blvd. – “BULGARIA” Blvd.
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INTERSECTION “AKAD. IVAN EVSTRATIEV GESHOV” Blvd. – “BULGARIA” Blvd.; CLIENT: SOFIA MUNICIPALITY; CONTR: “BALKANSTROY" Jsc.
- two-levells intersection;
- first level – existing roadways and tram railroad;
- second level – roundabout (that will improve the traffic capacity of the road junction)
- ramps at the four sides of roundabout;
- the roundabout will be supported by stay-cables, connected to the inner-and the outer parts of the circle;
- stay cabels – connected to a solid independent central pier and four additional outer piers, that also support the ramps’ structure;
- the advantage: no need of supports right under the roundabout; the adjacent green areas and the underpass aren’t affected;
- the piers and the other columns will be supported by reinforced concrete pile foundations; length of piles – between 20 and 35m
- roundabout reinforced concrete structure: horizontal beam-grid (ring-shaped slab with ring-shaped and radial beams) with great stiffness, supported by the stay-cables;
- the design is developed in technical phase in 2014 and is submitted for approval in January 2015.
2010
- METROSTATION “BELI DUNAV”
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METRO – SOFIA – 2ND LINE, METROSTATION “BELI DUNAV” (MS II-2), CLIENT: "METROPOLITAN" Plc.; CONTRACTOR.: “GP GROUP” Ltd.
- the station is situated under the intersection of blvd. “Lomsko shose”and “Beli Dunav” Str.;
- at both sides of the station the structure has two levels - parking lots above the metrotunnel;
- “BIAS-M” designed the metrostation and the tunnels with parking levels, and also developed the architectural design for the parking lots;
- tunnel part before the station with length: 130m; width: 18m; 2 levels; 100 parking spaces;
- tunnel part after the station – length: 330m; width: 13.5m; 2 levels; 300 parking spaces;
- at both ends of the stational - additional levels with parking lots; the comunication between the levels and between the parking and blvd. “Lomsko shose” is with ramps;
- metrostation: length:130m; width: 23m; average depth: 12.5m from the ground level to the railway level; 2 levels – platform level and intermediate level;
- excavation retaining structure - with reinforced concrete diaphragm walls;
- mat foundation;
- inner structure – reinforced concrete walls (doubled-construction), columns, slabs and beams;
- roof slab (2 types): type І – “top-down” method - the roof slab is supported by the reinforced concrete diaphragm walls and the excavation is made under the slab; type II – standart cut-and-cover (bottom-up) method;
- in exploitation since 2012.
- METROSTATION “NADEZHDA”
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METRO – SOFIA – 2ND LINE, METROSTATION “NADEZHDA” (MS II-3), CLIENT: "METROPOLITAN" Plc.; CONTRACTOR.: “GP GROUP” Ltd.
- under blvd. “Lomsko shose”, between districts “Nadezhda-1” and “Nadezhda-2”
- the metrostation has the following parameters: length - 120m; width – 16m; it is the “shallowest”station - average depth: 5.5m from the ground level to the railway level; only one intermediate slab at the platform level;
- direct connection with the street level (only one staircase);
- design of additional pedestrian lateral underpass under the station;
- construction by open cut-and-cover (bottom-up) method; excavation retaining structure with reinforced concrete cantilever diaphragm walls;
- mat foundation connected to the diaphragm walls by concrete dowels;
- the roof slab is supported by the diaphragm walls and one row of columns in the middle part (between the railway tracks);
- in exploitation since 2012.
- METROSTATION “LAVOV MOST”
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METRO – SOFIA – 2ND LINE, METROSTATION “LAVOV MOST” (MS II-7), CLIENT: "METROPOLITAN" Plc.; CONTRACTOR: " Doğuş Construction and Trade " Inc.
- under the intersection of blvd. “Slivnitza”and blvd. “Knyaginya Maria Luiza”; under the bridge “Lavov most” and “Vladaiska” river;
- the structure consist of two parts: metrostation (130m long) and pedestrian underpass part (long 70m);
- clear width of the station: 17.0m at the north part and 26.3m at the south part;
- average depth: 15.25m from the ground level to the railway level;
- the platform is situated in the middle part of the station;
- two additional levels at both ends of the station are designed – connected with staircases and elevators;
- reinforced concrete frame structure; divided in two parts (determined by the technology): part І – “top-down” method; reinforced concrete diaphragm walls, supported by one row of anchors; part II – open cut-and-cover method; reinforced concrete diaphragm walls – cantilever or supported by two rows of anchors;
- the mat foundation is U-shaped in the middle part – for TBM (Tunnel Boring Machine) passing;
- inner structure – reinforced concrete walls (doubled-construction), columns, slabs and beams;
- in exploitation since 2012 year.
- UNDERGROUND PARKING LOT – PARK “VAZRAZHDANE”
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UNDERGROUND PARKING LOT IN PARK “VAZRAZHDANE”, ”ZONA B 5-4”, “VAZRAZHDANE”, SOFIA; total floor area: 5 200sq.m.; CLIENT: SOFIA MUNICIPALITY/ MUNICIPAL ENTERPRISE "SOFPROEKT – MASTER URBAN SPATIAL DEVELOPMENT PLAN"; ARCHITECTURE by: “BIAS-M”Ltd.
2009
- METRO STATION “JAMES BOURCHIER”
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METRO – SOFIA – 2ND LINE, METROSTATION “JAMES BOURCHIER” (MS II-11), CLIENT: "METROPOLITAN" Plc.; CONTRACTOR.: "GEOTECHMIN" Ltd.
- next to intersection of blvd. “Cherni vrah”and blvd. “James Bourchier”
- the deepest metrostation in Sofia – 26m from the ground level to the railway level;
- three or four intermediate levels - most of them are for parking lots ~ 650 spaces.;
- metrostation length: 210m; clear width 18m;
- tunnel part after the station: 216m; with parking levels, clear width of 18m;
- underground levels – divided to two separate sections with adjacent ramps;
- reinforced concrete structure;
- retaining of the excavation – reinforced concrete diaphragm walls; length up to 33.5m; width 60 cm; supported by one, two or three rows of anchors;
- roof slab - constructed by the“top-down” method ; supported with diaphragm walls at the ends and in the middle of the span by single diaphragm wall acting as column;
- roof slab - executed in two stages with longitudinal technological joint; the roadway could be used during the execution; post-tensioned reinforcement;
- inner structure – mat foundation, reinforced walls (doubled-construction), columns, slabs and beams;
- in exploitation since 2012 year.
- SUBWAY TUNNEL LOT – FROM METRO STATION “MLADOST 1” TO METRO STATION “MLADOST 3”
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METRO – SOFIA – 1ST LINE, LOT FROM METRO STATION “MLADOST 1” TO METRO STATION “MLADOST 3” – CONSTRUCTION FOR VENTILATION INSTALLATION BETWEEN THE STATIONS AND THE ADJACENT TUNNEL PART, CLIENT: "METROPOLITAN" Plc.; CONTRACTOR.: CONSORTIUM “METRO MLADOST”
- location: alongside blvd. “Andrey Saharov”, in south-east direction, next to blvd. “Aleksandar Malinov”
- the structure is devided to three separate sections with deformation joints;
- first section – two-levels underground structure; first level – metro tunnel, second level – ventilation system with collector; in the process of construction the block is used as launching shaft for the excavation of the next part of the tunnel (New Austrian Tunneling Method);
- second and third sections – one-level with metrotunel; before the execution of the inner construction in these blocks are developed tempopary ramps for transport of the excavated earth;
- reinforced concrete structure;
- retaining of excavation – mostly with diaphragm walls, at the part with ramps – solid reinforced piles (static scheme – cantilever); 1st block – the diaphragm walls are supported by one row of anchors and diagonal struts in the end parts; 2nd and 3rd blocks – with additional steel struts;
- outside structure of the launching shaft – “top-down” method; retained by reinforced concrete diaphragm walls and the excavation is made under the roof slab,
- the construction of II-nd and III-rd part – open cut-amd-cover method;
- inner structure – reinforced walls (doubled-construction), mat foundation and roof slabs;
- in exploitation since 2012.
- REPOSITION OF THE TRAMWAY ALONG BLVD. “SKOBELEV”
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REPOSITION AND RECONSTRUCTION OF THE TRAMWAY TO BLVD. “SKOBELEV” – IN THE PART BETWEEN BLVD. “VITOSHA” AND BLVD. “HRISTO BOTEV”; CLIENT: SOFIA MUNICIPALITY/ MUNICIPAL ENTERPRISE "SOFPROEKT – MASTER URBAN SPATIAL DEVELOPMENT PLAN"; CONTRACTOR.: “TRACE GROUP HOLD” Plc.
- SOFIA RING ROAD: SOUTHERN ARC – PHASE 3
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SOFIA RING ROAD: SOUTHERN ARC - PHASE 3 – BRIDGES AND FACILITIES – CLIENT: SOFIA MUNICUPALITY/ MUNICIPAL ENTERPRISE "SOFIA PROEKT "; PHASE: INITIAL DESIGN
2008
- BRIDGE FACILITY
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BRIDGE FACILITY, “GARDOVA GLAVA”, “VITOSHA”, SOFIA; CLIENT: “CAPO GRAIN” Plc.; ARCHITECTURE by: “LS ENGINEERING LYUBOMIR SEMERDZHIEV ARCHITECTS AND ENGINEERS” Ltd.
2003
- DIAPHRAGM WALLS FOR RETAINING OF THE EXCAVATION FOR METROSTATION “JOLIOT CURIE”
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METRO – SOFIA – 1ST LINE, DIAPHRAGM WALLS FOR RETAINING OF THE EXCAVATION FOR METROSTATION “JOLIOT CURIE” (MS I-10), CLIENT: "METROPOLITAN" Plc.; CONTRACTOR.: “BKS-CENTER” Plc.