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CC BY V4.0, Open Access
Journal article
Seismic Performance of Bridge Piers Constructed with PP-ECC at Potential Plastic Hinge Regions
Materials, Vol.13(8), p.1865
04/16/2020
Handle:
https://hdl.handle.net/2376/121371
PMID: 32316124
Abstract
This work presents an experimental investigation on the seismic performance of bridge piers constructed with polypropylene fiber reinforced engineered cementitious composite (PP-ECC) at potential plastic hinge regions. Eight solid square bridge piers are tested under a combination of reversed cyclic lateral loading and constant axial vertical loading. The test variables include the reinforcement stirrup ratio (0 vol.%, 0.46 vol.%, and 0.79 vol.%), axial compression ratio (0.1 and 0.3) and height of the PP-ECC regions (0, 250, and 500 mm). Seismic performance of eight specimens is presented and interpreted, including the failure mode, hysteretic curves, loading-resistance capacity, ductility, stiffness degradation, energy dissipation, and equivalent viscous damping ratio. The material test on the PP-ECC plate specimen suggests that the PP-ECC has obvious strain-hardening behavior and multiple fine-cracking characteristics, with the tensile strength and strain capacity greater than 3.2 MPa and 2.6%, respectively. The PP-ECC material applied at the potential plastic hinge regions notably improves the seismic performance and damage tolerance of bridge piers. The influence of the aforementioned crucial parameters has also been investigated in detail. The axial compression ratio and the height of PP-ECC region have a major influence on the seismic performance of PP-ECC piers. In comparison, the stirrup ratio has a limited effect on the seismic behavior of PP-ECC piers. The experimental findings shed light on the mechanism of the PP-ECC that contributes to the seismic performance of bridge piers and provide some valuable guidance in the seismic design of PP-ECC piers.
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Details
- Title
- Seismic Performance of Bridge Piers Constructed with PP-ECC at Potential Plastic Hinge Regions
- Creators
- Yi Jia - Department of Civil & Environmental Engineering, Washington State University, Pullman, WA 99164, USARenda Zhao - Department of Bridge Engineering, Southwest Jiaotong University, Chengdu 610031, ChinaFuhai Li - Key Laboratory of High-Speed Railway Engineering, Ministry of Education, Southwest Jiaotong University, Chengdu 610031, ChinaZhidong Zhou - Department of Civil & Environmental Engineering, Washington State University, Pullman, WA 99164, USAYongbao Wang - College of Architecture and Civil Engineering, Taiyuan University of Technology, Taiyuan 030024, ChinaYulin Zhan - Department of Bridge Engineering, Southwest Jiaotong University, Chengdu 610031, ChinaXianming Shi - Department of Civil & Environmental Engineering, Washington State University, Pullman, WA 99164, USA
- Publication Details
- Materials, Vol.13(8), p.1865
- Academic Unit
- Civil and Environmental Engineering, Department of
- Grant note
- 2016YFB1200401 / National Key Research and Development Program of China 201707000065 / China Scholarship Council (CSC) 51778531 / National Natural Science Foundation of China 51308471 / National Natural Science Foundation of China
- Identifiers
- 99900612707301842
- Language
- English
- Resource Type
- Journal article