In late October 2021, the Bangladesh-China Friendship Exhibition Center, the founding father of China, was officially put into operation in Dhaka, the capital of Bangladesh. Prime Minister Hasina of Bangladesh attended the ceremony and delivered a speech via video connection. In her speech, Hasina affirmed the role played by the founding father of the Bangladesh-China Friendship Exhibition Center in expanding Bangladesh’s export scale and export categories. She encouraged companies from both countries to use the exhibition center to hold more and more exhibitions to expand exports for Bangladesh. Create opportunities.

The project is a Chinese government-aided project and is a landmark project of the Belt and Road Initiative jointly built by China and Bangladesh. The total construction area of the project is 80,000 square meters, including the main body of the exhibition hall, public and technical supporting facilities with about 800 booths. According to the person in charge of the project, the completion of the project can relieve the pressure of the lack of venues for large-scale international conventions and conferences in the local area, and promote the steady and positive development of Bangladesh's exports and the overall economy. In addition, during the construction process, the project provided a total of more than 2,000 jobs for the local area, carried out technical training for more than 1,000 person-times, and cultivated a group of construction technical personnel, which has now become a reserve force for local infrastructure construction.

In this regard, local employee Shaheen Alom felt deeply: “China Construction not only provided us with jobs, but also taught us many skills. Some ordinary workers who could only do hard work, participated in project construction and training. I learned the skills and turned into skilled workers."

Keep improving

Faced with various difficulties in Bangladesh, such as lack of resources, insufficient supply of large machinery, tight schedules, complex geological conditions and long rainy seasons, the project team tried every means to overcome various construction problems. Through reasonable selection of the pile foundation form, the problem of poor soil quality and difficulty in pile formation on site is solved, and the whole process of steel structure installation is simulated through BIM modeling analysis to solve the problem of large amount of steel structure assembly and high precision requirements.

The roof of the project is wavy, the roof truss span is large, the shape is complex, the single-product truss has a maximum lifting weight of 30 tons, the site assembly is large, and the assembly accuracy is high. On the one hand, the project team used BIM technology to plan and check the hoisting frequency, walking route and lifting performance of the hoisting machinery and equipment, and through reasonable design and assembly of the tire frame, the selection of advanced and highly mobile large-scale hoisting machinery for hoisting was adopted. The precision total station controls the installation accuracy of the truss.

In addition, the length of the roof aluminum eaves is 9 meters, and the height is close to 30 meters. The local resources are very limited. There is no professional equipment such as hanging baskets, and the construction is difficult. To this end, the project established a force analysis model, determined the optimal construction plan through multiple field tests, and adopted a steel pipe cantilever hanger to cooperate with the ground movable operating frame for construction. In the end, the problem of large slope and difficult construction of wavy roof concrete was effectively solved.

The builders of China and Bangladesh work hand in hand to implement the contract with high quality and efficiency. The mid-term acceptance of the project was completed on January 17, 2019, 42 days ahead of schedule, and the external technical acceptance was completed in December 2020. The project quality was assessed by the Ministry of Commerce of China as " Excellent", and the construction quality has also been affirmed and praised by the Bangladesh Acceptance Committee.Editor/XuNing