Differential settlement characteristics and influencing factors of widening subgrade

Fu Zhen; Wang Xuan-cang; Chen Xing-guang; Li Hong-zhi; Shi Jian-ping; Wang Lei

Volume 7 Issue 1

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Fu Zhen, Wang Xuan-cang, Chen Xing-guang, Li Hong-zhi, Shi Jian-ping, Wang Lei. Differential settlement characteristics and influencing factors of widening subgrade[J]. Journal of Traffic and Transportation Engineering, 2007, 7(1): 54-57.

Citation:

Fu Zhen, Wang Xuan-cang, Chen Xing-guang, Li Hong-zhi, Shi Jian-ping, Wang Lei. Differential settlement characteristics and influencing factors of widening subgrade[J]. Journal of Traffic and Transportation Engineering, 2007, 7(1): 54-57.

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Differential settlement characteristics and influencing factors of widening subgrade

1.
Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang'an University, Xi'an 710064, Shaanxi, China
2.
Guangdong Highway Design Institute, Guangzhou 510507, Guangdong, China
3.
Anxin Rebuilding Project Department of Henan Expressway Company, Xinxiang 450003, Henan, China

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Author Bio:
Fu Zhen(1976-), female, doctoral student, +86-29-83143206, fuzhen524@sina.com

Wang Xuan-cang(1956-), male, professo, +86-29-82334336, wxc2005@sohu.com
Received Date: 2006-10-13
Publish Date: 2007-02-25

Abstract

Abstract

In order to know the influence of differential settlement on widening subgrade, the differential settlement characteristics of widening subgrade were analyzed by finite element method, and the influences of subgrade height, compressive modulus, widening mode and width on the differential settlement and settlement curves of subgrade were studied. The result shows that differential settlement controlling on widening road with two sides is better than that with one side, the maximum differential settlement decreases from 20.58 cm to 5.46 cm when compressive modulus increases from 2 MPa to 10 MPa, and the increase of the biggest differential settlement is not in inverse proportion to the decrease of compressive modulus, while presents slowdown trend; the biggest differential settlement increases from 6.38 cm to 13.10 cm with subgrade height increasing from 2 m to 8 m, because of the influence of boundary conditions, the smaller the subgrade height is, the closer the settlement curve of widening subgrade top is to "~".
- subgrade engineering,
- widening subgrade,
- finite element method,
- differential settlement,
- widening modes,
- subgrade height,
- compressive modulus

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References(11)

References

[1]	Gao Xiang, Liu Song-yu, Shi Ming-lei. Key problems in embankment widening of expressway on soft ground[J]. Journal of Highway and Transportation Research and Development, 2004, 21(2): 29-33. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-GLJK200402008.htm
[2]	Jiang Xin, Qiu Yan-jun. Three-demensional numerical simulation of pavement performance in widened roads[J]. Journal of Engineering Geology, 2005, 13(3): 419-423. (in Chinese) doi: 10.3969/j.issn.1004-9665.2005.03.024
[3]	Zhang Hong-liang, Hu Chang-shun, Lu Wen-jiang. Theo-retical models of determining tolerable differential settlement at end of bridge[J]. Journal of Traffic and Transportation Engineering, 2005, 5(1): 19-23. (in Chinese) http://transport.chd.edu.cn/article/id/200501005
[4]	Liu Meng-cheng, Huang Xiao-ming, Tao Xiang-hua. Influence factors on post-construction settlement of high backfills adjacent to abut ment[J]. Journal of Traffic and Transportation Engineering, 2005, 5(3): 36-40. (in Chinese) http://transport.chd.edu.cn/article/id/200503008
[5]	Wang Dong-yao, She Xue-sen. Case-based reasoning approach to settlement of expressway on soft foundation[J]. Journal of Chang an University: Natural Science Edition, 2006, 26(1): 20-23. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-XAGL200601004.htm
[6]	Wang Chu-sheng, Pei Xian-ming, Zhou Li-zhen. Integrated treatment of abutment differential settlement in super highway[J]. Safety and Environmental Engineering, 2003, 10(4): 79-81. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-KTAQ200304025.htm
[7]	Li Jin-jun, Huang Mao-song, Wang Yu-de. Analysis of cumulative plastic deformation of soft clay foundation under traffic loading[J]. China Journal of Highway and Transport, 2006, 19(1): 1-5. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-ZGGL200601000.htm
[8]	Chen Jian-feng, Shi Zhen-ming, Shen Ming-rong. FEM simulation of settlement patterns of broad embankment[J]. Journal of Highway and Transportation Research and Development, 2003, 20(4): 23-26. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-GLJK200304006.htm
[9]	Li Ding-qing, Selig E T. Cumulative plastic deformation for fine-grained subgrade soils[J]. Journal of Geotechnical Engineering, 1996, 122(12): 1006-1013.
[10]	张起森. 道路工程有限元分析法[M]. 北京: 人民交通出版社, 1983.
[11]	钱劲松. 新老路基不协调变形及控制技术研究[D]. 上海: 同济大学, 2004.