加筋土柔性桥台复合结构抗震性能试验

doi:10.11908/j.issn.0253-374x.2019.11.002

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加筋土柔性桥台复合结构抗震性能试验
DOI:
                        10.11908/j.issn.0253-374x.2019.11.002
                    
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作者:
                        罗敏敏罗敏敏
同济大学 土木工程学院，上海 200092
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徐超徐超
同济大学 土木工程学院，上海 200092
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杨阳杨阳
同济大学 土木工程学院，上海 200092
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杨子凡杨子凡
同济大学 土木工程学院，上海 200092
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中图分类号:TU997
基金项目:政府间国际科技创新合作重点专项(No. 2016YFE0105800)；国家自然科学基金项目（41772284）；中央高校基本科研业务费专项资金（22120180625）

Seismic Performance of Geosynthetic Reinforced Soil-Integrated Structure in Shaking Table Test

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LUO Minmin
LUO Minmin
College of Civil Engineering, Tongji University, Shanghai 200092, China
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XU Chao
XU Chao
College of Civil Engineering, Tongji University, Shanghai 200092, China
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YANG Yang
YANG Yang
College of Civil Engineering, Tongji University, Shanghai 200092, China
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YANG Zifan
YANG Zifan
College of Civil Engineering, Tongji University, Shanghai 200092, China
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摘要:

通过一组土工合成材料加筋土柔性桥台复合结构（GRSIBS）全桥模型的振动台试验，研究该结构的抗震性能.研究结果表明：GRSIBS结构具有良好的抗震性能，在峰值加速度约为0.8g的Kobe地震波作用下，结构保持整体稳定，仅发生面层外倾、桥头差异沉降等微小的变形；在保持筋材极限强度与加筋间距比值相同的前提下，减小加筋间距有助于提高GRS桥台复合结构的抗震性能.

关键词:柔性桥台; 加筋土复合体; 土工合成材料; 振动台试验; 抗震性能

Abstract:

In this paper, the seismic performance of the geosynthetic reinforced soil-Integrated bridge system(GRS-IBS) structure is analyzed by conducting a set of shaking table test with a full bridge model. The results show that the GRS-IBS structure has a good seismic performance. Under the motion of Kobe seismic wave with a peak acceleration of 0.8g, the overall stability of the structure is good, and only minor deformations occur, such as surface excavation and differential settlement between the bridge beams. Under the premise of keeping the same ratio of Tf to Sv, reducing the reinforcement spacing helps to improve the seismic performance of the GRS abutment.

Key words:flexible abutment; geosynthetic reinforced soil (GRS) composite; geosynthetic; shaking table test; seismic performance

参考文献

[1] Adams, M. T., Schlatter, W., and Stabile, T. Geosynthetic Reinforced Soil Integrated Abutments at the Bowman Road Bridge in Defiance County, Ohio[C]. American Society of Civil Engineers, Geo-Denver2007, Denver, Colorado, States United , February18-21, 2007.

[2] Adams, M. T., Ooi, P. S., Nicks, J. E. Mini-pier testing to estimate performance of full-scale geosynthetic reinforced soil bridge abutments[J]. Geotechnical Testing Journal,2014, 37(5): 884–894.

[3] Wu, J. T. H., Lee, K. Z. Z., Pham, T. Allowable bearing pressures of bridge sills on GRS abutments with flexible facing[J]. Journal of Geotechnical and Geoenvironmental Engineering,2006, 132(7) : 830–841.

[4] Wu J. T. H., Pham T. Q., and Adams, M. T.

Composite Behavior of Geosynthetic Reinforced Soil Mass, No Report . FHWA-HRT-10-077[R]. U.S.DOT, Washington, DC, USA, 2013.

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[6] Adams M, Nicks J, Stabile T, et al. Geosynthetic Reinforced Soil Integrated Bridge System synthesis report, No Report . FHWA-HRT-11-027[R]. U.S.DOT, Washington, DC, USA, 2011.

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[9] Adams M. T., Nicks J., Stabile T., et al. Geosynthetic Reinforced Soil Integrated Bridge System Interim Implementation Guide, No Report . FHWA-HRT-11-026 [R]. U.S.DOT, Washington, DC, USA, 2012.

[10] Helwany S. M. B., Wu J. T. H., Meinholz P. Seismic Design of Geosynthetic-Reinforced Soil Bridge Abutments with Modular Block Facing, NCHRP Web-Only Document 187. Transportation Research Board, Washington, DC, USA, 2012.

[11] Zheng Y., Sander A. C., Rong W., et al. Shaking table test of a half-scale geosynthetic-reinforced soil bridge abutment[J]. Geotechnical Testing Journal, 2017, 41(1): 171-192.

[12] Zheng Y., McCartney J. S., Shing P. B., et al. Transverse shaking table test of a half-scale geosynthetic reinforced soil bridge abutment[J]. Geosynthetics International, 2018, 25(6): 582-598.

[13] Talebi, M. Analysis of the Field Behavior of a Geosynthetic Reinforced Soil Integrated Bridge System During Construction and Operation[D]. The university of Delaware, 2016.

[14] Iai, S. Similitude for shaking table tests on soil-structure-fluid models in 1g gravitational fields[J]. Soils and Foundations,1989, 29(1): 105–118.

[15] Ling H. I., Mohri Y., Leshchinsky D., et al. Large-scale shaking table tests on modular block reinforced soil retaining walls[J]. Journal of Geotechnical and Geoenvironmental Engineering, 2005, 131(4): 465–476.

引用本文

罗敏敏,徐超,杨阳,杨子凡.加筋土柔性桥台复合结构抗震性能试验[J].同济大学学报(自然科学版),2019,47(11):1541~1547

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收稿日期:2018-12-26
最后修改日期:2019-08-13
录用日期:2019-04-15
在线发布日期: 2019-12-05
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