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Theoretical Investigation, Numerical Simulation and Experimental Research of Manhole Settlement under Traffic Load

Author: DuJian
Tutor: JinXianYu
School: Zhejiang University
Course: Structural Engineering
Keywords: Traffic loads Inspection wells settlement Vibration equation Two - dimensional plane strain model Backfill
CLC: TU99
Type: Master's thesis
Year: 2010
Downloads: 59
Quote: 0
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Abstract


Inspection wells the city pipeline project ancillary structures . With the improvement in the level of China 's economic and social development and urbanization , more and more various types of municipal utility pipes , all kinds of inspection wells located in the city roads also will be increased , including a considerable number of inspection wells located in urban trunk road , within the range of sub-distributors or branch . Under repeated traffic loading , inspection wells widespread subsidence serious problem , a serious impact on traffic safety and urban aesthetics , resulting in unnecessary economic losses to the country . Construction workers from the construction point of view summed up inspection wells, mainly due to subsidence inspection wells surrounding backfill quality to meet the requirements, causing the road opened to traffic the inspection wells in and around the road soon settlement . This article first draw on the pile longitudinal vibration theory , longitudinal vibration equation of viscoelastic foundation under traffic load inspection wells , application of the inverse Laplace (Laplace) and Fourier (Fourier) transform mathematical methods , inspection wells settlement the semi-analytical solution and theoretical subsidence curves , well side soil parameters and check the well depth of the settlement inspection wells . Secondly , the use of general-purpose finite element software ANSYS , inspection wells under traffic loads settlement of the two-dimensional plane strain model , analysis of pavement , backfill , the inspection wells material and Kazakhstan web settlement inspection wells and well weeks back filling to asked the elastic modulus indicators required to calculate the final settlement to meet the specification requirements of the inspection wells . Finally, by doing indoor backfill material testing , meet the proposed indicators premise , consider the economic cost and ease of construction , recommended two backfill materials and the construction methods , in order to guide the actual construction .

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