Quality management

The process of designing and constructing in compliance with TNF

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Step 1: Geological survey
Step 1: Geological survey
Carry out geological surveys within the construction area and conduct a variety of experiments, such as:
- Consolidation test.
- Triaxial compression test.
- Particle size analysis test.
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Step 2: Design

Step 2: Design

Implement detailed designs for the project based on geological conditions.
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Step 3: Quotation

Step 3: Quotation

Provide a detailed quotation for the project.
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Step 4: Submission for approval and permit application

Step 4: Submission for approval and permit application

Submit verification drawings, reciprocal to the verifying agency.
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Step 5: Experimentation/Testing
Step 5: Experimentation/Testing
Proceed to collect soil samples at the construction site and conduct the following experiments:
- Experiment to determine the cement mixing ratio in the laboratory.
- Experiment to determine the amount of Cr6+ generated from the reaction between cement and soil.
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Step 6: Construction plan development

Step 6: Construction plan development

Prepare documents related to the construction plan for the project.
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Step 7: Construction

Step 7: Construction

Start the construction.

Perform a compression test on a single axis to assess the strength of the improved soil.
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Step 8: Preparation of a completion report for the construction

Step 8: Preparation of a completion report for the construction

Prepare a construction completion report.

Application of technology in quality management

BIM Application
Application of FEM
ICT Application

Overview of BIM

BIM is employed for the purpose of generating and overseeing data throughout the processes of design, construction, and operation. BIM integrates multidisciplinary data to generate detailed digital representations managed on an open cloud platform that users can collaborate on simultaneously.

Using BIM helps you gain a clearer understanding, make better decisions, have more sustainable options, and save costs for AEC projects. (*Architecture, Engineering, and Construction.)

The power of BIM lies in its ability to allow architects, engineers, and contractors to collaborate on coordinated models, giving them a better understanding of how their work fits into the overall project and ultimately helping them work more efficiently.

Building the BIM Process with proprietary technology at VINA TAKEUCHI

With the continuous development of technology, the demand for applying advanced tools to accelerate the production process and increase product quality is constantly growing. With a spirit of innovation, creativity, and integration, our company is always ready to invest, research, and apply new technologies. Among them, BIM is considered one of the main development contents.

Currently, Takeuchi Corporation and VinaTakeuchi Co., Ltd. have been applying BIM to TNF technology projects from the design phase to the construction phase.

Application of BIM in Design

Utilize Revit to generate BIM models specifically for foundations and improved ground structures. To minimize mistakes throughout the drawing process, it is important to maintain synchronization between the model and design drawings. BIM models provide 3D perspectives to examine intricate structural elements, validate design principles, and reduce design flaws.

Application of BIM in Construction

Create construction drawings, such as foundation excavation plans, with data extracted from the BIM model developed during the design stage. The model will be immediately updated to incorporate any design changes, promoting seamless cooperation across departments and ensuring that everyone has access to the most up-to-date model information. In addition, 3D models have the capability to export data for ICT construction equipment, which is a technology that decreases the requirement for manual labor and improves the quality of construction.

Application of BIM in Procurement

Use the model created during the construction drawing phase to automatically calculate volumes and provide estimates for the procurement department. This automated procedure enhances efficiency and accuracy by saving time, preventing redundant computations or mistakes, and optimizing the estimating process. Information on design changes is rapidly included into the quotation process.

Improving Performance with the Addin TNF Bundle

To maximize productivity, we consistently develop toolkits for various project stages, leveraging the benefits offered by the model.

We have designed tools that facilitate automatic modeling for foundations, unimproved zones, floors, steel, and more, enhancing modeling efficiency and accuracy.

Additionally, the quotation and construction departments are equipped with tools that support volume tasks and construction drawings.

Overview of FEM Analysis

The Finite Element Method (FEM) is a typical analytical method for simulating stress and deformation of structures and ground.

In areas with bedrock where different geological strata intertwine, the behavior of the subsoil becomes complex, and conventional design calculations may not fully appreciate this. In such cases, it is necessary to simulate the ground with high accuracy.

One of the causes of serious damage to buildings is the geology of the construction site that continues to subside for several years after construction, or the occurrence of liquefaction during earthquakes. During the design process, we use FEM software to conduct ground analysis and check the safety of the building based on the above factors.

Ground Analysis using 3D Models

When analyzing the ground with FEM, it is common to apply a 2D model (a cross-sectional model of the ground) because the calculation is time-consuming.

We use computers with high processing speeds to perform ground analysis using 3D models (three-dimensional models of the ground).

The 3D model is created based on borehole data obtained during geological surveys of several locations.

By analyzing the ground using 3D models, it is possible to more accurately simulate the stress distribution and deformation of the ground, even with complex geology.

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Consolidating settlement Analysis

Consolidating settlement is a phenomenon that occurs when the water in the clay layer drains over a long period of time.

Damage related to cohesive subsidence may only be detected years after construction, making it difficult to predict and address. In particular, uneven subsidence can seriously affect the building’s performance.

Currently, it is possible to calculate settlement using simple methods based on different calculation methods, but these methods have limitations in accuracy when the ground is complex or the construction load is large.

Therefore, we conduct FEM analysis using a 3D model to accurately calculate the settlement due to cohesion.

Liquefaction Analysis

Liquefaction causes the soil to lose its bearing capacity during earthquakes, leading to building tilting or heavy subsidence.

Even with pile foundations, when liquefaction occurs, the building can be seriously damaged.

Instead, shallow improvement methods, including our TNF method, are often used to resist liquefaction.

To improve safety, we use 3D modeling to conduct time-historical feedback analysis in conjunction with FEM.

This method of analysis allows us to calculate the underground “shear deformation amplitude” and assess the risk of liquefaction. At the same time, we calculate the degree of subsidence of the ground and use this information during the design of the building.

Overview of ICT

ICT (Information and Communication Technology) is the abbreviation for Information and Communication Technology, which involves the use of technologies related to information and communication.

Currently, ICT application has become an essential factor in improving efficiency and accuracy at construction sites.

With ICT, control data for construction equipment with integrated GNSS (satellite navigation system) and aerial topographic survey data (collected by drones) are managed in an integrated manner and can be used in construction processes.

Information exchange through such an integrated system makes the construction process more efficient and improves quality.

ICT application in Takeuchi Group

New technology development and quality control

In order to support the development of new technologies (TNF 2.0, DD Foundation) and improve the quality management process, we have actively applied ICT in the construction process. In many aspects, the application of ICT has brought significant effectiveness and clear benefits. Firstly, ICT allows for advanced data analysis, simulation, and evaluation in the development of new technologies and quality management processes.

This helps us obtain information quickly and more accurately than before, contributing to improving product quality. Additionally, recording and tracking data has become easier, enhancing monitoring and addressing quality-related issues.

Construction efficiency improvement and workforce reduction

The use of ICT has significantly improved the efficiency and automation of processes and construction work, significantly reducing the amount of human work.

Furthermore, the application of ICT helps reduce labor costs. Automating processes and digitizing content have improved work efficiency and minimized human effort. This allows for effective utilization of manpower to focus on quality improvement.

The process of ICT application

1. Design

Export 3D data from BIM model.

2. ICT data creation

Use 3D models to generate data for ICT machines.

3. Construction

Use ICT machines for construction and quality control.

4. Report exporting

The cloud manages construction data, ensuring that reports are based on actual work.

5. Inspection

Thanks to managed construction data, inspection will be easier.