Jilin Prefabricated Houses
Jilin prefabricated houses mainly include prefabricated concrete houses, prefabricated integrated houses, and there are also related renovation issues for prefabricated panel buildings. Here is a detailed introduction:
Prefabricated Concrete Houses
Components are pre-fabricated in the factory and assembled on the construction site. Significant advantages: High construction efficiency, suitable for Jilin with its variable climate, reducing delays caused by weather; Factory-based production facilitates quality control, minimizing issues such as insufficient concrete strength; Centralized procurement and management of raw materials reduce waste and save costs; Easy management of waste and recycling within the factory, which is environmentally friendly and can improve building energy efficiency; Although components are standardized, personalized designs can be achieved to meet different needs; Initial investment may be high, but the overall economic benefits are good, and production costs gradually decrease.
Prefabricated Integrated Houses
Wall and other components are produced and integrated in the factory before on-site assembly. Outstanding technical features: Construction efficiency is significantly improved, shortening the construction period by more than 50% while ensuring structural safety and quality; Components can be produced indoors, enabling uninterrupted construction in winter; High-performance insulation materials and composite wall structures are used to meet energy-saving standards in cold regions, with the structural system offering both earthquake resistance and durability; Dry construction methods and high-strength bolt connections reduce on-site wet work; BIM technology is applied in the design phase to enhance construction accuracy. Wide applications: They have been used in projects such as affordable housing and rural homestays, contributing to the development of green buildings and the achievement of the "dual carbon" goals. Advanced industrial base: A large-scale base in Jilin is equipped with fully automated production lines, with an annual production capacity exceeding 100,000 square meters, and its technical system has passed certification.
Prefabricated Panel Buildings
Worrying current situation: There are approximately 470,000 square meters of prefabricated panel-structured houses in Jilin City, with issues such as water leakage at floor joints. Over 65% have structural hazards, and 18% are classified as Grade C dangerous buildings. Clear policies: The 2023 plan prioritizes the renovation of buildings constructed before 1985, but there is a significant funding gap for dangerous building renovations in Jilin City in 2024. Challenges faced: High renovation costs and low willingness of developers to participate; Complex property rights that take a long time to clarify; Challenges in fundraising and planning adjustments. Innovative practices: The "reconstruction on the original site + rights replacement" model in Longtan District and the "shared ownership" model by China Overseas Property are worth learning from. Clear plans: It is planned to complete the renovation of 600,000 square meters of dilapidated houses by 2025, and new regulations will make more than 80% of prefabricated panel buildings subject to mandatory renovation requirements.
