Modular Frame Connector Assembly for Wind and Seismic Load Transfer
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Solution Overview
Problem
Current modular building construction methods face challenges in resisting wind and seismic forces, particularly in tall or slender buildings, due to limitations in force transmission and material efficiency, which result in increased costs and reduced usable floor area. Additionally, existing systems are not well-suited for non-orthogonal shapes and require complex connections and precision cutting, leading to increased construction time and complexity.
Innovation Solution
A system of load-bearing connector blocks, gusset plates, and standardized reinforcing members that allow for the efficient assembly and connection of modular frames, enabling the creation of structures with orthogonal, tapering, or curving shapes, while reducing the need for diagonal bracing and complex connections, and facilitating quick and accurate hoisting and placement of modules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If conventional pinned connections and lack of diagonal bracing are used in modular construction, then ease of assembly and shipping integrity are maintained, but force transmission effectiveness and structural stability are limited
Solution Approach 1:
The connector is divided into multiple functional elements including engagement portions for pinned connections and integrated bracing elements, allowing each segment to perform specific structural functions while maintaining overall system simplicity
Solution Approach 2:
The connector combines pinned connection functionality with diagonal bracing functionality into a single integrated component, eliminating the need for separate bracing elements and reducing overall connection complexity while improving force transmission
2Strength
If reinforced modules or large columns are used to resist wind and seismic forces, then structural strength is improved, but achievable building height is limited due to increased material usage and cost
Solution Approach 1:
The connector provides localized reinforcement at critical connection points where forces are transmitted between modules, rather than requiring uniform reinforcement throughout entire modules or large columns, optimizing material placement for maximum structural efficiency
Solution Approach 2:
The connector creates additional load paths through integrated bracing elements that transmit forces in multiple dimensions, allowing forces to be distributed across the building assembly rather than relying solely on vertical column resistance
3Strength
If secondary frames or tension rods are added to transmit loads, then force transmission is improved, but construction complexity and material cost increase
Solution Approach 1:
The connector merges secondary framing and tension rod functions into the primary connection element itself, with integrated bracing portions that provide load transmission paths without requiring separate secondary structural systems
Solution Approach 2:
The connector serves multiple functions simultaneously including pinned connection, diagonal bracing, and load transmission, replacing the need for multiple specialized components such as secondary frames and tension rods with a single universal element
4Strength
If precision cutting and complex connections are used for non-orthogonal shapes, then structural integrity is maintained, but construction time and complexity increase
Solution Approach 1:
The connector is pre-fabricated with integrated bracing elements and connection features in a controlled factory setting, allowing complex structural elements to be prepared in advance and simply assembled on-site, significantly reducing construction time while maintaining structural integrity
Data Source
AI summary
A lower connector includes a lower connector hollow body, a pair of lower connector bosses coupled to the lower connector hollow body, and a pair of lower connector arms coupled to the lower connector bosses. A connector assembly includes an upper connector coupled to a lower connector and a gusset plate sandwiched between the upper and lower connectors.