Chongqing Steel structure engineering

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DateJan 2025
Parking garage25,369.98 m²
Total construction area65,155.82 square meters
Project’s steel structuresRoof canopy and eaves cantilever beams.
House three sub-projectsProduction and Dispatching Building,District Integrated Media Center,District Smart City Center

Northern District Citizen Service Center (Phase III)

The Northern District Citizen Service Center (Phase III) is located on Plot F56-2, covering approximately 22.8 mu (about 15,200 square meters). The site will house three sub-projects:

  1. Production and Dispatching Building of Jiangbei Power Supply Company

  2. District Integrated Media Center

  3. District Smart City Center

The total construction area is 65,155.82 square meters, including:

  • Above-ground: 32,625.82 m²

  • Underground: 32,520 m²

Breakdown:

  • Public facilities: 37,154.07 m²

  • Parking garage: 25,369.98 m²

  • Supporting facilities: 75.82 m²

  • Equipment rooms: 2,489.2 m²

  • Others: 66.75 m²

  • Gross floor area (included in plot ratio): 32,635.82 m²

  • Fire control room: 75.82 m²

Project Scope

The scope of construction includes:

  • Earthwork and foundation leveling

  • Slope support

  • Main structural works

  • Water supply and drainage

  • HVAC systems

  • Power supply and distribution

  • Lighting and emergency lighting

  • Lightning protection and grounding

  • Intelligent lighting control

  • Outdoor landscaping, including:

    • Roads and perimeter walls

    • Biological treatment tanks

    • Outdoor water supply and drainage systems

    • Underground fire protection piping

    • Outdoor electrical systems

    • Landscape water features and greenery


Steel Structure Overview

The project’s steel structures are mainly used for the roof canopy and eaves cantilever beams.

🔹 Roof Canopy:

  • Installation elevation: 39.3 meters

  • Projection area: 1,358 m²

  • Structure: Inverted triangular truss system

  • Columns: Steel-reinforced concrete (SRC)

  • Connection: Rigid joints between steel truss beams and SRC columns

  • Design: Each beam spans 31.63 meters, arranged in 5 spans with 6 beams in total

  • Support: Trusses are connected with single-row tie rods to ensure lateral stability

🔹 Eaves Cantilever Beams:

  • Installation elevation: 40.4 meters

  • Projection area: 1,820 m²

  • Design: Single-row cantilever with 6-meter projection length

  • Perimeter length: 312 meters

  • Connection: Pre-embedded nodes fixed to concrete structure

  • Additional support: Horizontal bracing between cantilever beams