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Study on Technique of Control for Settlement Embankment in Guang-shan Expressway Widening Project

Author: LiJunFeng
Tutor: XieYongLi
School: Chang'an University
Course: Geotechnical Engineering
Keywords: Widening foundation Differential settlement Geosynthetics Dynamic compaction Numerical simulation Centrifugal Model
CLC: U416.1
Type: Master's thesis
Year: 2010
Downloads: 156
Quote: 1
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Abstract


In recent years, with the development of China's economic construction , the past, the construction of the highway most of all is a two - way four-lane , can no longer meet the needs of the growing volumes of traffic . In order not to make the road to become the bottleneck of economic development , the renovation and expansion of the old road has become the top priority of today 's road construction . However , the old road widening process , the difference between the old and new roadbed settlement will result in the pavement longitudinal cracks , affect the useful life of the road and use . Reclamation embankment must be specially treated paper mainly studies the laying of geogrid, Geocell and other geosynthetics Reclamation loose laying the soil , such as processing new widening foundation treated by dynamic compaction . The paper relies on the new and old roadbed of the the Sichuan Guangmian high - speed expansion project of differential settlement Treatment Technology , with the help of the finite element simulation analysis, geotechnical centrifuge model test by means of new and old roadbed settlement widening project control technology . Developed using finite element analysis software MARC and numerical simulation analysis, to improve the reliability and relevance of the numerical simulation analysis . Numerical simulation more accurate analysis of Reclamation subgrade settlement and deformation characteristics , implementation of effective engineering measures provide valuable data to rely on the construction site . Using geotechnical centrifuge installation displacement measuring system , the establishment of a realistic centrifuge test model to study the role of geosynthetics difference between new and old roadbed subsidence and deformation control , and verify the effect of the construction process, the practical application of geosynthetics .

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