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Settlement of High Embankment and composite foundation research

Author: LiPeng
Tutor: DaiJingLiang
School: Chang'an University
Course: Road and Railway Engineering
Keywords: High embankment Sedimentation stability Factors FEM Settlement laws Composite Foundation Cushion
CLC: U416.12
Type: Master's thesis
Year: 2005
Downloads: 227
Quote: 4
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Abstract


Highway construction in the mountains , the high embankment is widespread, is one of the main building highways . For a long time , high embankment problems did not arouse enough attention , and many high fill highway was opened to traffic in relatively short period of time with varying degrees of damage, serious impact on the use of highway performance . High fill embankment settlement affect the stability of many factors , such as: filling conditions, filling height , thickness of soft soil foundation , embankment and foundation soil layers of soil parameters ( such as deformation modulus, Poisson's ratio , cohesion and internal friction angle ) and so on. These factors and the roadbed subgrade settlement stabilizing effect is not independent , but interrelated constraints act together . With the help of the finite element tool for analysis of deformation and subgrade settlement of embankment fill height h 1 , embankment deformation modulus E s1 , ground deformation modulus E s2 < / sub> and its different proportions E s1 / E s2 relationship , to lower the high embankment loads uneven ground surface settlement and settlement suitability E s1 , E s2 , E s1 / E s2 values ??; settlement of embankment internal distribution of the numerical analysis, proposed distribution of the settlement within the embankment and proposed engineering solutions ; composite foundation with different ways of finite element analysis , pointing out that using composite foundation pile foundation can effectively reduce the amount of ground surface subsidence and differential settlement ; and in natural ground surface and the surfaces of composite foundation pile foundation laying a certain thickness and a certain cushion deformation modulus various combinations of the finite element analysis, put forward a suitable cushion thickness and modulus of deformation range ; and to the actual construction to submit a design and construction advice.

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CLC: > Transportation > Road transport > Road works > Roadbed, pavement engineering > Subgrade > Embankment
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