›› 2011, Vol. 32 ›› Issue (S1): 1-5.

• Fundamental Theroy and Experimental Research •     Next Articles

Simplified calculation methods of post-construction settlement of high-fill foundation in mountain airport

CAO Guang-xu1, 2, SONG Er-xiang1, 2, XU Ming1, 2   

  1. （1. Department of Civil Engineering, Tsinghua University, Beijing 100084, China; 2. Key Laboratory of Civil Engineering Safety and Durability of Ministry of Education, Tsinghua University, Beijing 100084, China
  • Received:2011-01-04 Online:2011-05-15 Published:2011-05-16

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Abstract: The rapid development of airport construction in western mountain area of China leads to increasing number of high-fill foundations, of which the main features are the large fill volume, high height and the existence of soft quondam foundation under fill. These features also increase the difficulty of post-construction settlement prediction. According to composition characters of high-fill foundations of mountain airport, the post-construction settlement can be divided into the creep deformation from upper coarse-grained filler and the consolidation deformation from lower soft quondam foundation. Firstly, a simplified calculation method to calculate consolidation deformation of soft quondam foundation is proposed on the base of analyzing and comparing existing calculation methods, which can consider construction process, and the calculation result by this method agrees relatively well with the field measurement data. Secondly, by analyzing laboratory test data, it is considered that hyperbolic model is also able to characterize the creep deformation of coarse-grained materials; base on this, another simplified calculation method to calculate creep deformation of upper coarse-grained filler is proposed.

Key words: high-fill foundation, post-construction settlement, simplified calculation method, creep deformation, consolidation deformation

CLC Number: 

  • TU 411
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