Jiashan House Shifting with Prefabricated Slabs

"Jiashan House Shifting with Prefabricated Slabs" is not a standard engineering term, but when combined with house shifting, wall modification (Jiashan Gailiang), and prefabricated slab technology, it can be understood as the treatment process for prefabricated slab floors during wall modification and structural shifting.

I. Core Concept Analysis

1. Wall Modification (Jiashan Gailiang): This involves removing non-load-bearing interior walls (referred to as "Jiashan") and replacing them with reinforced concrete beams to expand space or adjust the layout. Construction must follow the principle of "support first, then remove, and reinforce collaboratively." For example, in Luoyang, Henan, a "full-frame" support system is used to disperse the load on prefabricated slabs, preventing floor collapse due to wall removal.
2. Prefabricated Slab Floor Treatment: Prefabricated slabs are precast concrete components that form floors through splicing. During renovation or shifting, a professional support system (such as steel frames or temporary beams) is required to transfer the load and prevent structural instability. For instance, in the renovation of old houses in Zhengzhou, prefabricated slabs must undergo structural testing and reinforcement to ensure they can withstand the dynamic forces during shifting.
3. House Shifting Technology: This involves moving an entire building along tracks to a new location, requiring reinforcement of the foundation, walls, and floors. Prefabricated slab floors must be reinforced simultaneously with the main structure to prevent cracking due to vibration or displacement during shifting.

II. Construction Key Points and Process

1. Preliminary Inspection: The bearing capacity, crack conditions, and connection node strength of the prefabricated slab floor must be inspected to determine whether reinforcement or replacement is needed. For example, if the prefabricated slabs are aged or poorly spliced, they must be repaired or replaced in advance.
2. Support System Construction: A "full-frame" steel frame or temporary beams are used to disperse the load, ensuring floor stability during wall removal or shifting. The support spacing must be calculated based on the span of the prefabricated slabs to avoid local stress concentration.
3. Structural Reinforcement: If the shifting distance is long or the geological conditions are complex, steel mesh or shotcrete must be added to the prefabricated slab floor to enhance its crack resistance and integrity.
4. Shifting Operation: Hydraulic jacks are used for synchronous pushing, controlling speed and direction to prevent damage to the prefabricated slabs due to uneven force. After shifting, the connection nodes between the floor and walls must be refixed.

III. Cost and Compliance

• Quotation Reference: The cost of house shifting and wall modification varies by region. For example, in Luoyang, Henan, the construction quotation for wall modification starts at 150 yuan per square meter, and the total cost of house shifting can range from hundreds of thousands to millions of yuan, depending on the project scale and difficulty.
• Compliance Requirements: Construction must comply with the "Building Structural Load Code" and local seismic standards. Prior to renovation, approval must be obtained from relevant departments to ensure structural safety.

Summary: The treatment of prefabricated slabs in Jiashan house shifting requires a combination of structural reinforcement, load transfer, and shifting technology. It is recommended to entrust a professional team for inspection and design to ensure construction compliance and safety.