Buy article PDF
The purchased file will be sent to you
via email after the payment is completed.
US$ 35
|
Structural Engineering and Mechanics Volume 93, Number 3, February10 2025 , pages 231-245 DOI: https://doi.org/10.12989/sem.2025.93.3.231 |
|
|
|
Experimental study on the mechanical performance of soil-steel structures with relieving slab |
||
Baodong Liu, Fei Wu, Wangqi Chen, Lei Yao and Zhihong Wang
|
||
| Abstract | ||
| As an effective measure to reduce the internal force of long-span soil-steel structures under live load, the relieving slab is widely used in soil-steel structures where the cover depth can't meet the code's requirements. However, the effect and mechanism of the relieving slab and the calculation method for the internal force of soil-steel structures with relieving slabs are not yet clear. Therefore, loading tests were carried out on the model culvert with or without the relieving slab in this paper. The influence of the geometric parameters of the relieving slab and cross-section shape on the effect and the mechanism of the relieving slab were analyzed through the finite element models (FEMs) verified based on the test data. The calculation methods of the dispersion angle and the equivalent thickness of the relieving slab were fitted according to the parameter analysis results. The results show that the relieving slab spreads the live load to a larger range and prevents soil failure. The deformation and stresses are reduced by up to 86% and 73%, respectively. The calculation method proposed in this paper is more accurate and safer than the method proposed by Bakht and Abdel-Sayed. | ||
| Key Words | ||
| finite element model; live load dispersion; loading tests; relieving slab; soil-steel structures | ||
| Address | ||
| Baodong Liu, Fei Wu, Wangqi Chen: School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China Lei Yao: Guangxi Dapu Highway Co. Ltd., Qinzhou 535400, China Zhihong Wang: Hengshui Yitong Pipe Industry Co. Ltd., Hengshui 053000, China | ||