Study of Safety Influence Factor of Bridge Substructure in Loess Gulch

Abstract:

In this paper, the geology characteristics of loess gulch area were summarized. The mechanical models of the influence of landslide, debris flow and soil erosion on the safety of the pile foundation were created. The influence of the geology casualty on the safety of the pile foundation were analyzed. The analyses showed, when the pile foundation located the varied position of the loess gulch, the influence of soil erosion on the pile foundation character (acting force of pile side, free length of the pile, the first zero point position of the flexure curve, drawdown of the maximum bending moment, the increment of the lateral displacement, the drawdown of the lateral bearing capacity, the drawdown of the stability, etc.) were strikingly different. The calculation method of the pile and pier internal force was put forward under the function of landslide thrust and pressing force of debris flow. The corresponding prevention measures to different influencing factors were presented in the end.

• Periodical: Advanced Materials Research (Volumes 546-547)
• Pages: 89-96
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.546-547.89
• Online since: July 2012
• Authors: Jin Wei, Zhong Ju Feng, Feng Ma
• Keywords: Debris Flow, Loess Gulch, Loess Landslide, Pile of Bridge, Protection Technology, Safety of Pile, Soil Erosion

References

[1] GUO Chang-qing, FENG Zhong-ju, LIANG Yong-qi, WEI Jin. Prevention technique of highway slope[M]. Beijing: China Architecture and Building Press, 2007: 33-89.

[2] WEI Jin, LI Zhe. Submerged static load test of pile foundation in collapsible loess area[J]. Journal of Chang'an University(Natural Science Edition), 2011, 31(5): 63-67.

[3] WEI Jin, LI Zhe. Study on large-scale in-situ immersion static load test for bearing behavior of collapsible loess pile foundation. Proceeding of 2011 International Conference on Electronic and Mechanical Engineering and Information Technology, EMEIT 2011, Harbin, Heilongjiang, China, August14, 2011: 2544-2547.

DOI: 10.1109/emeit.2011.6023618

[4] FENG Zhong-ju. Foundation engineering in special area[M]. Beijing: People's Transportation Press 2008: 13-29.

[5] FENG Zhong-ju, REN Wen-feng, LI Jin. Bearing Capacity of Post-Grouting Pile Foundation[J]. Journal of Chang'an University(Natural Science Edition), 2006, 26(3): 35-38.

[6] FENG Zhong-ju, WEI Wei. Bearing capacity of large diameter bored hollow pile of prestressing force concrete[J]. Journal of Chang'an University(Natural Science Edition), 2005, 25(3): 49-53.

[7] FENG Zhong-ju, ZHANG Yong-qing, LI Jin. Study of displacement of bridge pier and abutment foundation caused by earth piling load and its prevention technique[J]. China Journal of Highway and Transport, 2004, 22(3): 29-33.

[8] FENG Zhong-ju, GUO Chang-qing, LIANG Yong-qi, WEI Jin. Study of Landslide prevention technique in Ling Chuan highway[R]. 2009: 10-33.

[9] QIAN Hong-jing, LUO Yu-sheng, etal. Collapsed loess foundation[M]. Beijing: China Architecture and Building Press, 1985: 56-76.

[10] LIU Zu-dian. Mechanics and engineering of loess[M]. Xi'an: Shaanxi Science and Technology Press, 1997: 9-15.

[11] TAN Wan-pei, ZHANG Xin-bao, WANG Cheng-hua. Preliminary Investigation of mud flow in area of the loess plateau[J]. The people of the Yellow River, 1987, (3): 24-25.

[12] FU Hui-fang. Soil and water loss and its control measures on loess plateau[J]. Research of soil and water conservation, 1997, 4(1): 162-163.

[13] GB50025－2004 Code for building construction in collapsible loess regions[S]. Beijing: China Architecture and Building Press, 2004: 27-67.

[14] ZHANG Wei, ZHANG Su-min. Proceeding of China Loess Engineering Character Research[J]. Chinese Journal of Geotechnical Engineering, 1995, 17(6): 81-86.

[15] Wang Nian-qin, Zhang Zhuo-yuan. Study on Loess Landslide Disaster[M]. Lanzhou: Lanzhou University Press, 2005: 28-68.

[16] LI Tie-hong, ZHANG Li-hong. Lateral influence of the Landslide collapse and talus to bridge pier column[J]. Proceeding of 2004 National Conference on Bridge and Construction Engineering, 2004: 886-894.

[17] LONG You-qiu, Structural mechanics[M]. Higher education express, 1980: 113-215.

[18] ZHOU Xiao-bin, The damage of mud-rock flow tu bridge engineering and its prevention and cure[D]. Shanghai Tongji University, 2006: 27-30.