Modular Crane Foundation With Ballast and Pedestrian Passage
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Solution Overview
Problem
Conventional concrete crane foundations are uneconomical, environmentally harmful, and obstruct pedestrian and vehicular traffic, requiring demolition and disposal after use, with high production costs and ecological impact.
Innovation Solution
A modular, reusable metal foundation system for tower and quick-erecting cranes comprising connectable metal floor elements with anchoring devices, transportable ballast weights, and passageway elements, allowing assembly and disassembly without disrupting sidewalks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional concrete foundations are used, then the crane loads are distributed evenly across the ground, but the foundation must be demolished and disposed of after use, causing environmental harm and additional costs
Solution Approach 1:
The foundation is divided into modular metal floor elements that can be assembled and disassembled. Each element is a separate component that can be reused independently, eliminating the need for monolithic concrete foundations and their associated environmental harm.
Solution Approach 2:
The foundation material changes from concrete to metal, fundamentally altering the material parameter. This enables the foundation to be reusable and transportable while maintaining load distribution capability through the metal floor elements' structural design.
2Strength
If high concrete foundations (75-150 cm) are constructed to ensure strength, then the crane loads are adequately supported, but pedestrian and vehicular traffic are obstructed
Solution Approach 1:
The foundation is segmented into modular metal floor elements with passageway elements integrated into the design. These elements can be configured to maintain sidewalk access while providing adequate support surface area for crane loads through the modular arrangement.
Solution Approach 2:
The foundation uses metal floor elements instead of concrete, allowing for thinner, lighter construction that doesn't require the 75-150 cm height of concrete foundations. The metal elements provide equivalent or superior strength with reduced height, maintaining sidewalk accessibility.
3Object-generated harmful factors
If reusable metal floor elements are used instead of concrete, then environmental impact is reduced and costs decrease, but the foundation must be sufficiently stable against wind loads and crane payloads
Solution Approach 1:
Transportable ballast weights are used to counterbalance wind loads and crane payloads acting on the mobile foundation. The ballast weights are placed on the metal floor elements to provide the necessary downward force to prevent tipping and ensure stability during crane operation.
Solution Approach 2:
The foundation system combines metal floor elements with ballast weights to achieve the necessary stability. The metal elements provide structural integrity and load distribution, while the ballast weights provide the counterbalancing force needed to resist wind loads and crane payloads.
Data Source
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AI summary
The mobile foundation (1) for tower cranes and fast-erecting cranes comprises at least two metal base elements (2, 3) that are detachably connectable to one another, in particular bolted together, wherein the base elements (2, 3) have anchoring devices (4) for a crane tower (5). Transportable, reusable ballast weights (13) can be placed on at least one support surface of the foundation (1). A passage element (10) with uprights (11) and/or side walls is provided, wherein the uprights (11) and/or side walls have a height of at least 2.1 m, preferably at least 2.3 m, and wherein the passage element (10) is detachably connectable to the base elements (2, 3), in particular bolted together.