Connecting Fitting for Bearing Wall Frame Deformation
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Solution Overview
Problem
Conventional bearing walls deform under tensile forces due to direct transmission of forces from braces, leading to structural instability.
Innovation Solution
A connecting fitting system that includes a vertical frame attachment section attached to the inner surface of vertical frames via threaded members, a brace attachment section integrated with the vertical frame attachment section, and a fixing plate welded to the lateral frame for attachment to the foundation or beam member, allowing effective distribution and absorption of tensile forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the side pieces of the connecting fittings are fixed to the flanges of the vertical structural members and lateral structural members, then the connecting fitting can be assembled quickly, but the frames may deform on account of tensile force from braces
Solution Approach 1:
The patent introduces an intermediate component (the connecting fitting with side pieces positioned between flanges) that mediates between the brace and the structural members. This intermediary absorbs and redistributes the tensile force, preventing direct transmission to the flanges and thus preventing frame deformation while maintaining assembly simplicity
Solution Approach 2:
The connecting fitting is segmented into distinct functional parts: side pieces for attachment, intermediate sections for force distribution, and configurations that separate the load paths. This segmentation allows the tensile force from braces to be distributed through multiple points rather than concentrated on the flanges, preventing deformation
2Device complexity
If the flanges of vertical and lateral structural members are fixed to side pieces, then the structural connection is simplified, but the flanges may deform due to direct transmission of shear forces
Solution Approach 1:
The side pieces act as intermediaries between the braces and the flanges. They are positioned between the flanges and provide a load path that distributes tensile forces through the connecting fitting structure rather than directly to the flanges, preventing shear force concentration and flange deformation
Solution Approach 2:
The connecting fitting is designed with different local configurations: side pieces with specific positioning, intermediate sections with force-distributing geometry, and attachment points strategically located to optimize load distribution. This local quality optimization prevents flange deformation at critical stress points while maintaining overall connection simplicity
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution suppresses frame deformation by redirecting lateral-direction tensile components to the foundation or beam member, enhancing structural stability and simplifying the production process.
Implementation Method 1
a vertical frame attachment section that can be attached to an inner surface of the vertical frame, by way of a threaded member
Implementation Method 2
a fixing plate, welded to the vertical frame attachment section
Data Source
AI summary
A connecting fitting includes a vertical frame attachment section 15a that can be attached to an inner surface of a vertical web 7a of a vertical frame 7A, 7B by way of bolts B2 in a state where the vertical frame attachment section 15a is disposed along the vertical web 7a, a brace attachment plate 14, connected to the vertical frame attachment section 15a, which enables attachment of an end of a brace 10A, 10B at a position inward of the vertical frame 7A, 7B, and a fixing plate 11, welded to the vertical frame attachment section 15a, which can be fixed to a beam member 4 or a foundation 2 in a state where the fixing plate 11 is disposed along an outer surface of a lateral frame 8A, 8B facing outward in a state of being disposed to make up a frame shape.