Design And Research On The Shallow Unsymmetrical Loading Tunnel Of Ma Lugou

With the construction of highway in mountain areas，the highway constructed near therivers or mountains becomes more and more。The phenomenons are frequently appears thatthe tunnel either its import or export shallowly embeded and biased。More prominent featureof the kind of tunnel engineering is shallow depth,severe terrain serious bias and brokensurrounding etc。 Construction slightest mistake will certainly lead to very seriousconsequences. So it raises higher requirements to tunnel design。We must ensure the safetyand rationale in the structure and design of the supporting structure。Therefore the stress stateof the structure and the supporting structure is increasingly subject to the attention ofdesigners。This thesis rely on the designs of Malugou tunnle in Jilin Province Yingchengzi toSongjianghe highway。Study on tunnles shallowly embeded and biased near the rivers ormountains。Firstly，start with engineering program。We make a coMParative analysis to threeengineering solutions(excavation cutting，tunnel shed and Shallow unsymmetrical loadingTunnel)。 Through many coMParisons such as environmental protection、 geologicalconditions、structural safety、difficulty and risk of construction、duration and cost etc。It showsthat tunnles shallowly embeded and biased is sensible。Secondly，summarize the design ofMajiagou tunnle。Make a construction simulation numerical analysis of tunnel structure withfinite element software。Research on mechanical behavior and trends of the surrounding rockand support structure in the shallow bias structure of the construction process。Lastly，proposeinsights and suggestions to the design and numerical analysis of Malugou tunnle。Provide areference for future similar projects。...