Prefabricated Column Beam Bracing System for Seismic Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing prefabricated post and beam construction techniques face challenges in securely connecting elements on-site, particularly with reinforced concrete, where horizontal and vertical bracings are not commonly used, leading to issues with element stability and the need for high-strength assembly rods due to potential angle changes, and in timber construction, where secure fixing of steel bars and wooden braces is necessary to prevent cracking and ensure strong bonding.
Innovation Solution
The technique involves prefabricating poles, beams, and junctions in a factory, using a system of vertical and horizontal bracings with threaded rods and notches to prevent slippage, and applying a cement mortar seal at intersections for enhanced stability, allowing for either partial or total prefabrication of junctions, including the use of metal frames and junction blocks with deep grooves for increased mechanical resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If threaded rods are used to connect braces to columns and beams, then the connection strength is improved, but the assembly complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-drilling holes and preparing threaded rod insertion paths before final assembly. The braces are positioned and temporarily held in place, allowing threaded rods to be inserted and secured in a controlled manner, reducing the complexity of the actual connection process while maintaining strong joints.
Solution Approach 2:
The threaded rods act as intermediary elements that mediate the connection between braces and structural members. Rather than directly fastening braces to columns and beams, the threaded rods provide an intermediate connection mechanism that simplifies the assembly process while ensuring robust structural joints.
2Stability of the object's composition
If notches are provided in posts or beams for wedge fitting, then the stability against angle changes is improved, but the manufacturing complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the structural members (posts and beams) into sections that can accommodate notches. These notches are strategically positioned to allow wedge insertion, creating discrete stabilization points that prevent angle changes without requiring complex overall structural modifications.
Solution Approach 2:
The notches and wedges provide local quality enhancement at specific critical joints where angle stability is most needed. Rather than making the entire structure more complex, the notches are localized features that provide targeted stabilization at connection points while leaving the rest of the structural members simple and easy to manufacture.
3Reliability
If a seal is applied at intersections of prefabricated elements, then the junction stability is improved, but the construction time increases
Solution Approach 1:
The sealant is applied in advance to the intersection surfaces of prefabricated elements before final assembly. This preliminary application ensures that when the elements are brought together, the sealing function is already in place, reducing on-site construction time while maintaining junction stability and preventing moisture or air infiltration.
Solution Approach 2:
The sealant material provides self-service by automatically filling gaps and crevices at intersections through its viscous flow properties. Once applied, the sealant self-adjusts to ensure complete coverage and stable junctions without requiring additional manual intervention or complex application procedures, thus maintaining reliability while minimizing construction time.
4Strength
If prefabricated junction blocks with deep grooves are used, then the mechanical resistance is improved, but the manufacturing complexity increases
Solution Approach 1:
The deep grooves and reinforcement structures are incorporated into the junction blocks during factory prefabrication, before the blocks are shipped to the construction site. This preliminary manufacturing of complex features allows for high mechanical resistance to be achieved while keeping on-site assembly simple, as the complex structural features are already built into the blocks.
Solution Approach 2:
The patent replaces complex on-site mechanical assembly operations with pre-fabricated junction blocks that have integrated reinforcement and groove features. Instead of manually assembling multiple components to achieve high mechanical resistance, the entire junction block is manufactured as a single integrated unit with built-in structural features, substituting complex mechanical assembly with simpler installation processes.
Data Source
Figure 1~3
Figure 4~5
Figure 6~7
AI summary
The invention relates to a construction system for high-level prefabrication of building structures of the column and beam type, such prefabrication enabling this type of construction to be industrialized. The main development that makes it possible to achieve this objective under the same, if not better, technical conditions as with the conventional system is the large-scale use of vertical and horizontal braces. Such a construction system is of particular benefit in areas of high seismic risk, since the building is very light, made up of a set of structurally self-supporting units, highly triangulated and thus not easily deformed, all at a relatively low cost.