Prefabricated Concrete Houses in Yongqiao District

Currently, no detailed information specifically targeting prefabricated concrete houses in Yongqiao District has been found, but these houses have the following characteristics:

Production and Construction Process

Prefabricated concrete houses combine factory prefabrication with on-site hoisting. On standardized production lines, the entire process of steel bar binding, mold assembly, and concrete pouring is mechanized. The production cycle for a single module is only 7 days, with an error margin controlled within 2 millimeters. After being transported to the construction site, a 50-ton crane, in conjunction with an intelligent positioning system, can complete the installation of the main structure of a single villa in 4 hours. A 100㎡ house can be ready for occupancy in just 5 days from an empty lot. For example, the main structure of a house of about 200 square meters can be erected in as fast as 4 hours, and it takes about a month from the completed shell to the owner's self-decoration.

Technical Features

• Structural Stability: These houses adopt a full-frame shear wall structure, using C35 concrete and Φ14 threaded steel bars. The reinforcement ratio of a single module reaches 1.2%, with a wall thickness of 200mm and a compressive strength of 30MPa, equivalent to being able to withstand 3000 tons per square meter.
• Reliable Connections: Modules are connected through pre-stressed bolts (with a tensile strength of 25 tons) combined with the mortise-and-tenon structure of ancient-style buildings. In a simulated Wenchuan earthquake test, under a 9-degree intensity tremor, the overall displacement was only 3cm.
• Smart Integration: The walls are embedded with EPS insulation layers (with a thermal conductivity of 0.03W/(m・K)), saving 50% on heating costs in winter. The roof is equipped with reserved interfaces for photovoltaic panels, and a 200㎡ house can generate up to 3000 kWh of electricity annually, meeting household electricity needs.

Advantages

• Efficiency Improvement: For a 300㎡ house, the construction period is only 1 day for a prefabricated concrete house compared to 6 months for traditional construction, representing an 180-fold increase in efficiency. In terms of labor costs, a 100㎡ house costs 60,000 yuan for traditional construction and 24,000 yuan for a prefabricated concrete house, a 60% reduction. Construction waste is reduced by 98%, from 30 tons per traditional house to 0.5 tons per prefabricated concrete house.
• Good Performance: In a real-world typhoon test in Yangjiang, Guangdong, the prefabricated concrete house withstood a Category 12 typhoon (with a wind speed of 37m/s). While the tiles of adjacent traditional brick houses flew off, the exterior wall tiles of the prefabricated concrete house did not fall off, and the deformation of doors and windows was less than 1mm. However, attention should be paid to the design of module connections, as their seismic performance is slightly inferior to that of cast-in-place houses. They can meet requirements in non-seismic zones, and modular prefabricated structures are not suitable for building too many floors; otherwise, it is difficult to meet seismic design requirements.