Study on the Jacking Force of the Underpinning by Pipe-Jacking for the Historical Masonry Constructions

Abstract:

The structural damages, which result from the inadequate bearing capacity or the asymmetric support of foundation, are one of the crucial works in the conservation of historical masonry constructions. A new underpinning technique, applying the principle of pipe-jacking, is presented in this paper, which can build a new foundation system having sufficient rigidity under the bearing wall of the upper building. The technique has been successfully used in the conservation practices of masonry constructions, but the basic problems involved in the technique has not yet studied. Based on the field test, the principle of the underpinning by manual pipe-jacking , the mutual effect mechanism between box girders and soil, the calculation of jacking force and its influence factors are investigated in detail, and the empirical formula of calculating jacking force is also presented.

• Periodical: Advanced Materials Research (Volumes 368-373)
• Pages: 2473-2477
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.368-373.2473
• Online since: October 2011
• Authors: Wei Xi Zhang, Yong Tao Liu
• Keywords: Historical Masonry Constructions, Jacking Force, Pipe-Jacking, Underpinning

References

[1] Gao Naixi，Zhang Xiaozhu, Pipe jacking technology [M],Beijing: China Architecture & BuildingPress, 1984.8,62-63，47.(in Chinese)

[2] An Guan-feng, Yin Kun-long, Tang hui-ming, Discrimination and analysis of formulae for jacking forces in pipejacking[J] ,Rock and solid mechanics, 2002.6,358-361. (in Chinese)

[3] Yu Binquan, Chen Chuancan. construction technology of pipe jacking[M],People's Communications Press, 1998.8. 72-84. 187. (in Chinese)

[4] National code, Code for construction technology and acceptance of pipe jacking (implementation). (in Chinese)

[5] Gang Liu. Numerical Modelling of Damage to Masonary Buildings Due to Tunnelling. Doctorial thesis to the Oxford University. 1997. (in Chinese)

[6] Huang Hongwei，Hu Xin, 3D Numerical analysis on construction mechanics effect of pipe-jacking[J], Chinese Journal of Rock Mechanics and Engineering, 2003.3，400-406. (in Chinese)

[7] Qian Jiahuan, Yin Zongze, Priciple and Calculation of the solid(2nd edtion)[M],Beijing, China Water Conservancy and Hydropower Press, 2003.3，409-411. (in Chinese)

[8] Fang Yinggaung, Mo Haihong, Zhang Chuanying, Theoretic and testing analysis of solid deformation in the area of disturbance caused by pipe-jacking[J], Chinese Journal of Rock Mechanics and Engineering, 2003.4，601-605. (in Chinese)

[9] Zhang Weixi,Chen Ping,Zhao dong, The design for the integral Lift-up for the conservation of the Jade Emperor Pavilion of Kaifeng Yanqing Taoist Temple[J], Industrial constructure,2009.12. (in Chinese)