Zero-Carbon Source Project

Project Overview

The Qingdao International Logistics Park steel structure warehouse project is a benchmark logistics and storage project built by Tianhe Steel Structure for Qingdao Port Group. With a total construction area of 86,000 square meters, the project adopts a 36m large-span column-free space design and is equipped with a photovoltaic-integrated roof system. It is the first logistics and storage project in Shandong Province that combines large-span steel structures with green energy.

Project Challenges and Solutions

Large-span Column-free Space Requirement

Challenge: The client required a 36m column-free space to improve the operational efficiency of storage equipment, which is difficult to achieve with traditional concrete structures.
Solution: Adopted Q355B high-strength steel to manufacture truss structures, optimized node design through finite element analysis, achieving a 40% reduction in structural weight compared to traditional schemes under 36m span.

Fast Delivery Requirement

Challenge: The client required the main structure to be completed within 60 days, which is impossible with traditional construction methods.
Solution: Adopted full modular prefabrication technology, with 85% of components processed in the factory and on-site assembly construction, shortening the construction period by 50% compared to traditional processes.

Green Energy Efficiency Standards

Challenge: The project needed to meet the national Green Building Two-Star standard, while traditional warehouses have high energy consumption.
Solution: Innovatively designed a photovoltaic-integrated roof with an installed capacity of 1.2MW, generating 1.5 million kWh annually, meeting 30% of the warehouse's electricity demand, and adopting an efficient insulation system to reduce energy consumption.

Technical Highlights

Large-span truss structure: 36m column-free span with inverted triangular truss system, deflection controlled within L/600, meeting the requirements for heavy-duty shelf installation.
Photovoltaic integration design: Roof-integrated photovoltaic panels and steel structure support system, achieving perfect integration of structure and energy system, reducing carbon emissions by 1,200 tons annually.
Prefabricated assembly technology: 90% of components prefabricated in the factory, on-site bolted connections, precision controlled within ±3mm, ensuring installation efficiency and quality.
Intelligent monitoring system: Structural health monitoring system real-time monitoring of stress, displacement and other parameters to ensure long-term safe operation of the warehouse.
Rapid water-stop technology: Innovative node waterproof design combined with on-site welding technology to achieve zero roof leakage, far exceeding industry standards.

Project Achievements and Benefits

Quantitative Results

Warehousing efficiency improvement 40%

Construction period reduction 50%

Energy cost reduction 30%

Economic Benefits

Initial investment saved by 18%, approximately 8.6 million yuan
Annual operating costs reduced by 20%, approximately 1.2 million yuan
Annual power generation revenue from photovoltaic system: 1.5 million yuan, investment payback period 6 years
Put into operation 6 months in advance, additional income of 24 million yuan

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