TYPE | Special Structures | LOCATION | Beijing |
MATERIAL | KIN DRAGREEN | YEAR | 2023 |
AREA | 33,000 ㎡ |
Background
As a core component of the “Safe Palace Museum” initiative, this project aimed to address safety hazards caused by aging and inadequate infrastructure, including water supply, drainage, power, and heating systems. The project faced three primary challenges: construction within a UNESCO World Heritage site, which strictly prohibits open flames, limits ground disturbance, and enforces stringent environmental protection; the presence of aging underground pipelines with incomplete historical records, requiring careful avoidance of unknown archaeological foundations; and the need for exceptionally high waterproofing durability to prevent repeated excavation that could cause secondary damage to the cultural relics.
Solution
The project utilized the KIN DRAGREEN Hydrophobic Polymer Drainage & Waterproofing Integrated System, shifting from a “passive waterproofing” approach to a combined “drainage and waterproofing” strategy. High-performance polymer drainage boards established efficient drainage pathways, effectively reducing hydrostatic pressure on the structure. A fully sealed protective barrier was formed using compatible polymer membranes and a nodal sealing system. The materials were solvent-free, meeting the strict environmental requirements for cultural relic preservation. A segmented construction approach was adopted, with excavation and immediate application of waterproofing. Critical details were treated with a double-layer system of pre-embedded waterstops and sealant, ensuring comprehensive protection.
Outcomes
The renovated areas achieved zero leakage, eliminating the risk of foundation settlement under cultural relics that could have been triggered by pipeline leaks. Drainage capacity was significantly enhanced, effectively managing extreme rainfall events. A standardized waterproofing construction protocol for underground utility replacement within heritage buildings was established, earning high recognition from the “Safe Palace Museum” expert panel.
