Project Overview
The Hangzhou International Expo Center is a key part of the Hangzhou Olympic Sports Expo City, located at the intersection of Qingnian Road and Binjiang Second Road in Xiaoshan District, Hangzhou. This expansive urban complex primarily serves as a convention and exhibition center, while also incorporating commercial, office, and leisure spaces. It is set to become the largest exhibition center in Hangzhou, situated on the south bank of the Qiantang River and destined to be a new landmark for the city.
The total construction area of the International Expo Center is approximately 84,000 square meters. Designed to meet the high standards required by international conferences such as APEC and Davos, the exhibition section features 7,500 international-standard booths. Above the main property, three towers house office and hotel spaces. A 6,000 square meter rooftop garden, combined with an urban living room, will offer a scenic attraction along the Qiantang River.
The project is divided into five functional zones: the convention and exhibition center, overlying property management, rooftop garden, underground commercial area, underground garage, and computer room. Each zone operates as a relatively independent functional system, including mechanical and electrical setups. These zones can be combined flexibly depending on specific usage scenarios. The skirt section stands at a height of 44.15 meters, while the tower section reaches 99.95 meters. The building is classified as Class I for fire protection, with a fire resistance rating of Class I, and civil air defense engineering at Level 6, combining both peacetime and wartime requirements.
Rendering of Hangzhou International Expo Center
BIM Application in the Hangzhou International Expo Center Project
Before construction, the Luban software was used to model the Hangzhou International Expo Center. Normally, manual calculations would require three people working for 20 days each, totaling 60 person-days. Using Luban software, three people completed the modeling in just 7 days, totaling 21 person-days. This greatly improved work efficiency while ensuring quality.
One Control and Processing of Procurement Plans and Limited Material Requisition
Limited material requisition is a vital tool for pre-controlling material consumption costs and an essential aspect of project cost management. After creating the BIM model, it becomes possible to quickly and accurately determine the installation quantities for any part, providing precise data to support procurement and material requisition at any time.
For example, to count the quantities of fire elevator drainage pumps, the Luban BIM software can be used to select similar components within the model. The software then automatically searches and counts the number of components, while also displaying relevant details such as specifications and models of globe valves.
Through 3D virtual technology, procurement planning and limited material requisition during construction can be effectively achieved, reducing project funding risks and increasing profitability.
Two Comparison of the Three Calculations
A core capability of cost management is real-time comparative analysis of the three calculations: design estimate, construction drawing budget, and final settlement. Because different specialties are involved, separate BIM models are created for each discipline, allowing independent accounting.
By using the software’s calculation report functionality, it is easy to generate summary tables such as list quota summaries, list summaries, quota summaries, and consumption summaries. This enables timely, fast comparison of the three calculations, supports process audit control, and significantly reduces financial risks.
For instance, the summary table for electrical consumption on the underground second floor clearly details all electrical usage in that area. It allows easy, quick, and detailed breakdowns of project quantities, such as the consumption of each distribution box and the individual circuits beneath each box. Calculation formulas can be traced back for verification, and conditional statistics enable comparisons of engineering quantities for any combination. For example, in the underground second floor, under distribution box XFKF N3, selecting the box before the circuit project provides detailed statistics of all consumption in that section.
Traditionally, compiling and analyzing massive engineering data was essential. Now, with BIM, these tasks are streamlined into simple model queries.
Components can also be divided into zones as needed. Our main method is regional verification, which allows quantities to be retrieved directly within the calculation plan by boxing specific areas.
Three Professional Collision Detection to Avoid Rework and Save Construction Time
By integrating BIM models across different disciplines, 3D collision detection can predict conflicts early, eliminating hidden risks caused by design errors, omissions, and clashes.
For example, simulating the entire basement construction allows detection of unreasonable areas or pipeline conflicts before actual construction. The software automatically identifies collision locations, labels them, and generates detailed reports in Word format. This process helps improve construction quality and prevents costly rework.
Conducting 3D collision detection prior to construction significantly enhances project coordination, reduces rework, and prevents delays.
Four Guiding Installation Projects with Construction Instructions
BIM acts as a four-dimensional database that applies to the entire project schedule, ensuring timely and efficient completion. For example, the BIM model displays planned start and end times, reasonable construction periods, and details of pipeline installation projects on each floor.
Temporary changes can be annotated directly in the model, such as adjustments to pipeline construction schedules, including start and end times and reasons for changes.
Valuable documents like change orders and acceptance forms can be linked electronically to 3D models for real-time reference and to avoid loss.
Additionally, on-site construction progress can be photographed and linked to the model to facilitate comprehensive process control.
Information for expensive equipment, including purchaser details, purchase time, location, quantity, and reputation, can be recorded for easy traceability later.
The entire 3D model can also be printed and used for on-site construction guidance. Imagine how valuable a large-scale simulation of actual construction would be for guiding and managing on-site work.
Prospects
BIM technology breathes life into buildings by visualizing them before construction begins, virtually guiding the entire process. However, BIM is more than just 3D visual simulation; it is a 4D associated database that effectively directs construction, improves work efficiency, and provides comprehensive project control.
It achieves this by managing changes, maintenance, statistics, and analysis of extensive data within the model, thereby saving costs and creating value.
BIM’s application has sparked an information revolution in the construction industry, and we believe its widespread adoption will drive new advancements in the field.
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