›› 2010, Vol. 31 ›› Issue (3): 832-838.

• Geotechnical Engineering • Previous Articles     Next Articles

House cracking evaluation by DSC model and in-situ monitoring

YI Xiao-ming 1,2，ZHANG Ding-li1，CHEN Wei-zhong2   

  1. 1. Tunnel and Underground Engineering Research Center of Ministry of Education, Beijing Jiaotong University, Beijing 100044, China; 2. Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China
  • Received:2008-10-13 Online:2010-03-10 Published:2010-03-31

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Abstract:

House cracking and over-deforming are common risks when tunnel crossing urban territory; and relative studies of house cracking calculation and its risk evaluation lag far behind engineering need. By comparison and analysis, it is verified by uniaxial and triaxial compression tests that disturbed state concept (DSC) can give good description of material behavior after cracking, and combining this model with the practice of Xiamen airport road tunnel undercrossing building blocks, houses’ deforming and cracking will be quantitatively calculated and evaluated; and the results have good accordance with in-situ house cracks and deformation monitored data. Meanwhile, it still shows close correlation between DSC disturbed factor and house cracking, thereby from mechanics, it is effective and reasonable to depict house cracking by using disturbed factor. Furthermore, process control criteria of house deforming and cracking can be set up by DSC model. Finally, in each key step and stage of tunnel undercrossing building blocks, house deforming and cracking risks can have criteria to go by and be process-evaluated and controlled well.

Key words: DSC model, house cracking, tunnel undercrossing, process control, monitoring

CLC Number: 

  • TU 443
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