Precast Ground Beam Joint Locking for Fast Accurate Assembly

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Solution Overview

Problem

The joining of precast ground beams at a building site is difficult, time-consuming, and lacks accuracy in existing systems.

Innovation Solution

A joint system comprising first and second joint parts with locking dowels and housings, and a locking pin mechanism that allows for quick and accurate connection of precast ground beams without the use of grout.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If traditional grout filling method is used to connect precast ground beams, then the connection can be achieved, but the process becomes difficult and time-consuming

Engineering Contradiction:

Improvejoining speedVSAvoidjoining process complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The connection system is divided into separate modular components: joint parts with locking housings, locking dowels, and locking pins. This segmentation allows each component to perform its specific function independently, enabling quick assembly without complex grout filling processes.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The joint parts are pre-configured with locking housings and dowels during manufacturing. The alignment features and pre-positioned locking mechanisms enable the ground beams to be connected quickly at the site without requiring complex preparation or multiple steps.

Inventive Principle:

Principle #10Preliminary action

2Manufacturing precision

If traditional grout filling method is used to connect precast ground beams, then connection can be achieved, but accuracy in joining is poor

Engineering Contradiction:

Improvejoining accuracyVSAvoidconnection system complexity

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The locking housings and dowels are designed with asymmetric features that ensure precise alignment and orientation. The specific geometric configuration of the locking mechanisms guarantees accurate positioning of the ground beams relative to each other, eliminating the need for complex alignment procedures.

Inventive Principle:

Principle #4Asymmetry

Solution Approach 2:

The traditional grout-filled mechanical connection is replaced with a direct mechanical locking system using dowels and pins. This substitution provides more reliable and accurate positioning while simplifying the overall connection process.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Productivity

If precast ground beams are used, then installation speed is improved, but joining difficulty increases

Engineering Contradiction:

Improveinstallation speedVSAvoidjoining ease

Core Design Contradiction:

ProductivityVSEase of operation

Solution Approach 1:

The joint parts are designed with multi-functional features that combine alignment, positioning, and locking functions into a single integrated system. This universality simplifies the joining operation while maintaining the speed benefits of precast construction.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentEP4276249B1Joint system

Publication Date: 2026.03.18 LEIMET

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AI summary

The present invention relates to a joint system for joining precast ground beams (205, 206, 207, 208) together. The joint system comprises a first joint part (101) for a first precast ground beam (205, 206) and a second joint part (102) for a second precast ground beam (207, 208), which joint parts (101, 102) can be locked together by using at least one locking pin (103, 104). The present invention also relates to a foundation for a building.