Pioneering Prefabricated Housing: One of China's First Residential Projects Built Using This Method

As a pioneer in the industrialization of residential construction in China, Vanke has been dedicated to continuous exploration and innovation since establishing the Vanke Architecture Research Center in 1999. By 2007, with the founding of the Vanke Residential Industrialization Research Base, the technology for residential industrialization matured, leading to the launch of the first batch of industrialized residential building projects. Among these, the Beijing Wanheng Jiayuan Project stands out as a pilot for the prefabricated shear wall system and is one of China’s earliest residential industrialization initiatives. This project holds great importance in advancing the development of industrialized residential construction.

Project Overview

The B3 and B4 floors of the Beijing Wanheng Jiayuan project utilize a shear wall structural system. Interior walls are cast-in-place, while exterior walls are prefabricated. The connection joints between interior and exterior walls are poured after connecting prefabricated components. The project includes cast-in-place interior walls, mountain walls, and exterior walls around elevator shafts and stairwells.

Each floor is outfitted with 12 precast concrete wall panels: 4 on the north façade and 8 on the south façade, with the heaviest panel weighing up to 4 tons. Additionally, balcony panels, air conditioning panels, and staircases are constructed using prefabricated components. Decorative tiles on the exterior walls are applied during the prefabrication process.

1. Factory Production of Prefabricated Components

Production Process:

Assembling templates

Laying bottom tiles

Binding steel bars for the prefabricated building mesh

Pouring the bonding layer

Laying extruded polystyrene insulation board

Inserting and positioning connectors

Embedding into the steel cage

Pouring concrete

Removing formwork

Lifting the prefabricated wall panels

High-pressure water jet cleaning of sidewalls

Surface cleaning

2. Transportation and Stacking of Prefabricated Components

Transportation of Prefabricated Components

Stacking of Prefabricated Components

3. On-Site Installation of Prefabricated Components

Lifting of Prefabricated Components

Hoisting of prefabricated wall panels

Hoisting of balcony panels

Positioning of Prefabricated Components

Adjustment and Correction of Prefabricated Components

The lower end of the slant support controls displacement along the Y-axis

Ensuring vertical alignment of the upper end of the slant support

Positioning of Other Prefabricated Components

Prefabricated staircase (left) and welding at staircase connections (right)

Bracket support beneath the balcony panel (left) and prefabricated balcony lifting (right)

Cast-in-Place Wall Formwork

Formwork

Full hall steel pipe scaffolding (left) and on-site formwork for shear walls (right)

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