Container House Demolition Method

The demolition of container houses should adhere to the principles of systematicness, safety, and environmental protection, with core steps including on-site assessment, structural dismantling, component classification and recycling, and compliant waste removal.

1. On-site Assessment and Safety Briefing

Before demolition, it is necessary to review the original design drawings to clarify the mechanical relationships between the main load-bearing components (such as steel columns and main beams) and the enclosure system (such as color-steel plates and thermal insulation cotton), and to confirm the load distribution and potential risk points. Designate a work warning area, equip it with fall protection nets, rigid isolation barriers, and firefighting equipment, and conduct safety training for workers to ensure they master the norms for working at heights, machinery operation, and emergency response. For example, Qingdao Xinwanda Container Technology Co., Ltd. avoided structural damage and secondary pollution in its Jinan project through load verification and fire and fall prevention controls.

2. Structural Dismantling Process

1. Removal of the Top Enclosure
   Use hand tools (such as edge-biting pliers and cutting saws) in conjunction with light lifting equipment to sequentially remove roof skylights, thermal insulation cotton, and color-steel plates. High-altitude throwing is prohibited. The thermal insulation cotton should be pre-sprayed with water to prevent the飞扬 (flying) of rock wool fibers. For example, in the demolition of steel structure workshops, the removal of color-steel plates should be separated from the fixed supports to avoid large-area tearing that could deform the plates and injure people.

2. Dismantling of the Frame Structure
   Cut the connection nodes in the reverse order of "columns-beams-supports-floor slabs" to release residual stress. Use oxygen cutting equipment or hydraulic shears to cut the steel columns and main beams in sections. Direct violent toppling is strictly prohibited. For example, when the Zhejiang Clas team demolished a portal frame, they first unloaded the crane beams and roof live loads before cutting the load-bearing components to ensure that local weakening did not trigger overall collapse.

3. Component Classification and Recycling

Classify and package steel, aluminum alloy profiles, and door and window hardware, and connect with local disposal sites or renewable resource warehouses. Enclosure materials such as color-steel plates and thermal insulation cotton should be separately placed in the recycling channel. Metal plates can be reused after melting and recasting, and thermal insulation waste can be processed into sound-absorbing materials. For example, Qingdao Xinwanda linked old component assessment, safe dismantling, and new container customization through modular replacement and parametric design collaboration, using standardized processes to control losses and reduce comprehensive disposal costs.

4. Compliant Waste Removal and Site Handover

After demolition is completed, the site should be cleaned, and residual components and construction waste should be inspected to ensure there are no safety hazards. Connect with compliant transportation units to transfer the classified components to designated storage yards or renewable resource warehouses to avoid illegal dumping. For example, at the end of a project, a professional demolition service provider in Jiangsu achieved rapid site handover and met the deployment needs of subsequent projects through digital re-measurement and an asset life cycle management system.