Dedicated Elevator Shaft Construction for Multi-Level Renovation
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Solution Overview
Problem
Existing methods for adding a dedicated elevator to multistoried buildings, such as commercial or office buildings, are costly and inefficient for interconnecting only adjacent floors, failing to adequately improve business convenience and security or provide barrier-free accessibility.
Innovation Solution
A construction method involving the creation of an elevator shaft with opening/closing doors on each level, allowing for the installation of a dedicated elevator that connects only specific adjacent floors, using a compact elevator facility with a lifting mechanism, suitable for buildings with existing elevators and applicable to RC, SRC, or S structure buildings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a dedicated elevator is added to connect only specific adjacent floors, then business convenience and security are improved, but construction cost increases
Solution Approach 1:
The elevator system is segmented into a dedicated portion (connecting only specific adjacent floors occupied by a shop or company) and the existing common elevator system. This segmentation allows the dedicated elevator to serve specific business needs without requiring a complete new elevator system, thereby improving business convenience while controlling construction costs through targeted, limited-scale construction.
2Reliability
If a dedicated elevator is installed separately from the existing elevator, then security is improved, but device complexity increases
Solution Approach 1:
The dedicated elevator is merged with the existing elevator infrastructure by utilizing the same elevator shaft and control systems where possible. The cage and lifting means are integrated into the existing structure, allowing the dedicated elevator to operate independently for security purposes while sharing common infrastructure to minimize overall system complexity.
3Ease of operation
If renovation to add a dedicated elevator is performed, then barrier-free accessibility is improved, but construction time is required
Solution Approach 1:
The elevator shaft and supporting infrastructure are constructed or prepared in advance during the renovation phase, before the dedicated elevator equipment is installed. This preliminary action allows the structural framework to be ready beforehand, enabling faster installation of the actual elevator equipment and reducing the overall construction time while ensuring barrier-free accessibility is achieved.
4Ease of manufacture
If an opening is provided in the floor slab for the elevator shaft, then elevator installation is enabled, but structural integrity must be maintained
Solution Approach 1:
The floor slab is modified with a localized opening specifically at the position where the elevator shaft needs to pass through. This local quality change allows the elevator to be installed without compromising the overall structural integrity of the building, as the opening is precisely positioned and sized to accommodate the elevator shaft while maintaining the strength and stability of the surrounding floor structure.
Data Source
AI summary
A construction method for renovation to add a dedicated elevator according to the present invention is used, in cases where a shop or a company located in a multistoried building equipped with an existing elevator owns the floors of a plurality of levels adjacent in the vertical direction, for instance, to add a dedicated elevator that interconnects only the floors or two or more levels adjacent in the vertical direction. The construction method includes: at a predetermined position in a portion finished as a floor slab of a floor serving as a dedicated part of the levels adjacent in the vertical direction, newly providing an opening in which an elevator shaft can be formed; constructing, in the opening, the elevator shaft passing through the floor or the floors of the plurality of levels and having an opening/closing door on each level; and installing, inside the elevator shaft, a cage for the elevator to be newly added and a lifting means for lifting the case up and down.