Next Article in Journal
Numerical and Experimental Investigation of the Effect of Traffic Load on the Mechanical Characteristics of HDPE Double-Wall Corrugated Pipe
Previous Article in Journal
Biotreatment of Winery Wastewater Using a Hybrid System Combining Biological Trickling Filters and Constructed Wetlands
Open AccessArticle

Seismic Effectiveness of Multiple Seismic Measures on a Continuous Girder Bridge

by Yumin Zhang 1,*, Yun Shi 1 and Dengke Liu 2
1
Mechanical Engineering College, Xi’an Shiyou University, Xi’an 710065, China
2
School of Human Settlement and Civil Engineering, Xi’an Jiaotong University, Xi’an 710049, China
*
Author to whom correspondence should be addressed.
Appl. Sci. 2020, 10(2), 624; https://doi.org/10.3390/app10020624 (registering DOI)
Received: 21 November 2019 / Revised: 9 January 2020 / Accepted: 10 January 2020 / Published: 15 January 2020
Seismic hazards, such as bridge pounding, unseating, collapse, etc., cause significant economic losses and affect traffic and safety. Research on seismic measures, such as limiting and unseating prevention devices for the bridge, can effectively prevent damage to the bearings, such as excessive displacement, the pounding of the beam end, etc., in an earthquake. In this paper, the dynamic time-history analysis method was used to study the mechanical behaviors of the bridge structure, such as its seismic performance, structural displacement, pier bending moment, etc. We found that different combinations of seismic measures can effectively reduce the displacement at the bridge expansion joint and bearings. The joint application of an expansion device, restrainer, and unseating prevention devices shows the best limiting effect on bridge displacement and expansion joint displacement. The maximum reduction of bridge expansion joint displacement reaches 48% and is within the allowable deformation range of an expansion device in a large earthquake, and the maximum reduction of bearing displacement reaches 34%, which only slightly exceeds the shear deformation of the bearing. The expansion device, restrainer, and unseating prevention devices have smaller internal forces in this case than other cases, without damage. In contrast to the previous studies on single seismic measures of unseating restrainers, this study investigates the combination of multiple seismic measures and earthquakes of various magnitude. It reveals the catastrophe process of the bridge structure and the cooperation law of seismic measures in an earthquake. View Full-Text
Keywords: seismic risk analysis; pounding; seismic design; restrainer; unseating prevention devices seismic risk analysis; pounding; seismic design; restrainer; unseating prevention devices
Show Figures

Figure 1

MDPI and ACS Style

Zhang, Y.; Shi, Y.; Liu, D. Seismic Effectiveness of Multiple Seismic Measures on a Continuous Girder Bridge. Appl. Sci. 2020, 10, 624.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop