Vertical Precast-to-Foundation Coupling With Threaded Box Sections

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Solution Overview

Problem

Existing construction technologies face challenges such as reliance on skilled labor, time-consuming on-site connections, weather vulnerabilities, and non-scalable construction methods, leading to inefficiencies and poor quality in building projects.

Innovation Solution

A connection assembly mechanism using a threaded connector and hollow box section member for coupling precast structures with a foundation, allowing for rapid, cost-effective, and durable installation with reduced skilled labor requirements.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional on-site connection methods (rebar lapping) are used, then structural continuity is achieved, but installation time and skilled labor requirements increase significantly

Engineering Contradiction:

Improvestructural continuityVSAvoidinstallation time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The connection components (threaded connectors, hollow box section members, elongated connectors) are pre-fabricated and pre-assembled into complete connection assemblies before site installation. This preliminary preparation eliminates time-consuming on-site fabrication and allows for rapid installation while ensuring structural continuity through pre-engineered connection designs.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The connection system is divided into discrete, modular components including threaded connectors embedded in the foundation, hollow box section members attached to precast structures, and elongated connectors embedded in vertical structures. These segmented components can be independently manufactured and assembled, reducing installation time while maintaining structural integrity through precise mechanical connections.

Inventive Principle:

Principle #1Segmentation

2Productivity

If standard connection mechanisms are used for precast modules, then installation speed improves, but skilled labor requirements and waiting time for grout strength remain

Engineering Contradiction:

Improveinstallation speedVSAvoidskilled labor requirements

Core Design Contradiction:

ProductivityVSEase of operation

Solution Approach 1:

The connection assemblies are designed to be self-aligning and self-securing through mechanical features such as threaded connectors that embed directly into concrete, hollow box section members that snap-fit onto precast structures, and elongated connectors that lock into vertical structures. This self-service design eliminates the need for skilled operators to perform complex manual connections or apply grout, while maintaining rapid installation speed.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The traditional mechanical system of manual rebar binding and grout-based connections is replaced with a modern mechanical fastening system using threaded connectors, hollow box section members, and elongated connectors that provide immediate structural connection without requiring grout curing time. This substitution eliminates skilled labor requirements while maintaining installation speed.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Adaptability or versatility

If build-on-site approaches are used, then customization is possible, but construction quality and completion time estimation accuracy deteriorate

Engineering Contradiction:

Improvecustomization capabilityVSAvoidconstruction quality

Core Design Contradiction:

Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The connection assembly mechanism provides a universal system that can accommodate various precast module configurations and foundation types through standardized threaded connectors, hollow box section members, and elongated connectors. This universal design enables customization for different project requirements while maintaining consistent connection quality through standardized manufacturing processes, thereby improving both adaptability and manufacturing precision.

Inventive Principle:

Principle #6Universality (Multi-functionality)

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

Enables rapid construction with structural integrity, durability, and enhanced resistance to environmental factors, reducing construction time and costs while ensuring seamless structural continuity.

Implementation Method 1

The hollow box section member and the threaded connector are mechanically coupled using a mechanical fastener for coupling the vertical precast structure with the foundation structure at a construction site.

Methodology Applied

Scientific EffectMechanical Fastening: Mechanical Fastener

Data Source

PatentUS20250270804A1Method and arrangement for coupling a foundation structure and a vertical precast structure

Publication Date: 2025.08.28 ONX INC

AI summary

A connection assembly mechanism includes a threaded connector, a hollow box section member, a set of elongated connectors, and a connection mechanism. The threaded connector is embedded in a foundation structure. The hollow box section member having a base including a threaded cavity receives the threaded connector and is flush mounted with an internal bottom edge of a vertical precast structure. The set of elongated connectors, positioned at opposite vertical sides of the hollow box section member, is embedded within the vertical precast structure. The connection mechanism coupling the hollow box section member and the threaded connector, thereby couples the vertical precast structure and the foundation structure.