Normalized analysis of deformation for deep excavation diaphragm walls under different neighboring building conditions

Hsu, Chia-Feng; Tsai, Yi-Hao; Chen, Yue-Rong; Li, Yeou-Fong; Chen, Shong-Loong

doi:10.1016/j.rineng.2024.102155

Results in Engineering

2024

DOI: 10.1016/j.rineng.2024.102155

|View full text |Cite

Normalized analysis of deformation for deep excavation diaphragm walls under different neighboring building conditions

Chia-Feng Hsu,

Yi-Hao Tsai,

Yue-Rong Chen

et al.

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...

Citation Types

Supporting

Mentioning

Contrasting

Year Published

2024

Publication Types

Select...

Article2

Relationship

Self Cite0

Independent2

Authors

Journals

Cited by 2 publications

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

Evaluating the Effects of Deep Excavation on Nearby Structures Through Numerical Simulation

Hsu,

Huang,

et al. 2024

Applied Sciences

View full text Add to dashboard Cite

Traditional numerical analyses often overlook the potential impact of adjacent building basements on ground surface deformation. This study investigated the influence of neighboring structures on diaphragm walls and ground surface deformation during deep excavation for building foundations using PLAXIS 3D finite element software. This study simulated the top–down construction method with plate elements for diaphragm walls retaining H-shaped steel for support and pre-stressed anchors. The adjacent structures were modeled using plate elements. Numerical analysis results were compared with field observations for model validation. The results show that the lateral displacement of the retaining wall varies with the depth of neighboring basements. At 0.5 times the excavation depth, displacement was significant, and it stabilized at 1.0 times the depth. When the distance between adjacent buildings and the retaining wall was about twice the excavation depth, the deformation curve converged, indicating negligible influence beyond this distance. Ground surface settlement increased as the neighboring basement depth reached half the excavation depth, and stabilized at 1.6 times the depth. A closer proximity resulted in greater ground surface settlement. These findings offer practical references for deep excavation design and assessment, aiding engineers in ensuring project stability and safety.

show abstract

Evaluating the Effects of Deep Excavation on Nearby Structures Through Numerical Simulation

Hsu,

Huang,

et al. 2024

Applied Sciences

View full text Add to dashboard Cite

show abstract

Effect of Steel Support Cross-Section and Preloaded Axial Force on the Stability of Deep Foundation Pits

Jin,

Zhao,

Zheng

et al. 2024

Buildings

View full text Add to dashboard Cite

To investigate the effects of steel support cross-section dimensions and preloaded axial force levels on the stability of foundation pits, numerical simulations were conducted for open-cut deep foundation pits based on monitoring data from Changchun Metro Line 9. Results show that increasing the wall thickness and diameter of the steel support significantly reduces the horizontal displacement and axial force of the enclosure pile. When the wall thickness increases from 14 mm to 25 mm, the horizontal displacement of the enclosure pile can be reduced by up to 7.63 mm, and the axial force of the steel support can be reduced by 11.4–15%. When the diameter of the steel support changes from 609 mm to 800 mm, the axial force of the second steel support is reduced by 3.2–5.5%. The change in preloaded axial force results in a horizontal displacement change of about 3–5 mm and a surface settlement change of about 0.6–4.2 mm. The preloaded axial force meets pit stability control requirements when it reaches 60% of the design axial force.

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

customersupport@researchsolutions.com

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Normalized analysis of deformation for deep excavation diaphragm walls under different neighboring building conditions

Cited by 2 publications

References 15 publications

Evaluating the Effects of Deep Excavation on Nearby Structures Through Numerical Simulation

Evaluating the Effects of Deep Excavation on Nearby Structures Through Numerical Simulation

Effect of Steel Support Cross-Section and Preloaded Axial Force on the Stability of Deep Foundation Pits

Contact Info

Product

Resources

About