Next Article in Journal
Research on the Design Method of Laminated Glass Bridge Deck for Vehicle Applications
Previous Article in Journal
A Comparative Experimental Study on Seismic Retrofitting Techniques for RC Frames: RC Jacketing, Steel Jacketing, and Base Isolation
 
 
Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
Journals
Buildings
Volume 15
Issue 19
10.3390/buildings15193540
buildings-logo
Submit to this Journal Review for this Journal Propose a Special Issue
► Article Menu

Article Menu

share Share announcement Help format_quote Cite question_answer Discuss in SciProfiles
first_page
settings
Order Article Reprints
Font Type:
Arial Georgia Verdana
Font Size:
Aa Aa Aa
Line Spacing:
Column Width:
Background:
This is an early access version, the complete PDF, HTML, and XML versions will be available soon.
Article

Experimental Study on Bidirectional Bending Performance of Steel-Ribbed Composite Slabs for Electrical Substations

by
Lin Li
1,
Zhenzhong Wei
1,
Yong Liu
1,
Yunan Jiang
1,
Haomiao Chen
2,
Yu Zhang
2,*,
Kaifa Zhang
2,
Kunjie Rong
2 and
Li Tian
2
1
Shandong Electric Power Engineering Consulting Institute Co., Ltd., Jinan 250013, China
2
School of Civil Engineering, Shandong University, Jinan 250061, China
*
Author to whom correspondence should be addressed.
Buildings 2025, 15(19), 3540; https://doi.org/10.3390/buildings15193540
Submission received: 21 July 2025 / Revised: 9 September 2025 / Accepted: 29 September 2025 / Published: 1 October 2025
(This article belongs to the Section Building Structures)
Versions Notes

Abstract

This study investigates the bidirectional bending performance of double- and triple-spliced steel-ribbed composite slabs for substation applications. Full-scale experiments and numerical parametric analyses were conducted to evaluate ultimate load, ductility, stiffness, failure modes, and load-transfer mechanisms. Results indicate that double-spliced slabs exhibit better performance than triple-spliced slabs, showing a 24.5% higher ultimate load and 65.3% greater ductility, with well-developed orthogonal cracks and yielding of both longitudinal prestressing steel and transverse reinforcement. Triple-spliced slabs display partial bidirectional behavior due to reduced transverse integrity, with stresses in edge slabs concentrated at the corners. Compared with monolithic slabs, spliced slabs show nearly identical stiffness at cracking onset but progressively reduced stiffness, load capacity, and ductility in the mid-to-late loading stages. Joint-crossing reinforcement is critical for transverse load transfer, and increasing its diameter is more effective than increasing its strength in preventing premature joint-controlled failure. These findings provide significant theoretical guidance and technical support for the prefabricated construction of high-voltage substation floor systems.
Keywords: prefabricated construction; steel-ribbed composite slab; prestressed composite slab; bidirectional bending performance; electrical substation prefabricated construction; steel-ribbed composite slab; prestressed composite slab; bidirectional bending performance; electrical substation

Share and Cite

MDPI and ACS Style

Li, L.; Wei, Z.; Liu, Y.; Jiang, Y.; Chen, H.; Zhang, Y.; Zhang, K.; Rong, K.; Tian, L. Experimental Study on Bidirectional Bending Performance of Steel-Ribbed Composite Slabs for Electrical Substations. Buildings 2025, 15, 3540. https://doi.org/10.3390/buildings15193540

AMA Style

Li L, Wei Z, Liu Y, Jiang Y, Chen H, Zhang Y, Zhang K, Rong K, Tian L. Experimental Study on Bidirectional Bending Performance of Steel-Ribbed Composite Slabs for Electrical Substations. Buildings. 2025; 15(19):3540. https://doi.org/10.3390/buildings15193540

Chicago/Turabian Style

Li, Lin, Zhenzhong Wei, Yong Liu, Yunan Jiang, Haomiao Chen, Yu Zhang, Kaifa Zhang, Kunjie Rong, and Li Tian. 2025. "Experimental Study on Bidirectional Bending Performance of Steel-Ribbed Composite Slabs for Electrical Substations" Buildings 15, no. 19: 3540. https://doi.org/10.3390/buildings15193540

APA Style

Li, L., Wei, Z., Liu, Y., Jiang, Y., Chen, H., Zhang, Y., Zhang, K., Rong, K., & Tian, L. (2025). Experimental Study on Bidirectional Bending Performance of Steel-Ribbed Composite Slabs for Electrical Substations. Buildings, 15(19), 3540. https://doi.org/10.3390/buildings15193540

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

Article Metrics

Back to TopTop