Study On Light Rail Settlement In Conditions Of Construction Of Metro Shied Tunnel

Now researching the rule of the impaction of metro shield construction0n lightrail settlement in Dalian special geological condition.In the construction background ofDalian metro line one, integratng mesured base to analyse the impaction of metro shieldconstruction0n light rail settlement. In order to analyse the impaction of metro shieldconstruction0n light rail settlement,numerical modeing project case of this sectionoverall, camparing the fitting degree of simulated data and empirical equation, provingthe process of simulation is reliable. Optimizing construction parameter and adopting allkinds of measures to reduce the impaction of shield construction to light rail settlementto minimum. Get the following main achievements:(1) Shield tunnel underpass the light rail section,railway settlement curve is similar withnormal curve.The largest settlement of railway is above left line after left lineexcavation; The largest settlement is above centre line after double line excavation.(2) The deeper the burial depth of tunnel is, the less settlement of202light rail trackcaused by shield construction will be. The shallower the burial depth of tunnel is, themore settlement of202light rail track caused by shield construction will be.(3) There is large settlement within the range of202light rail track crosses shield of40m which should value enough in actual project.(4) When shield tunnel in202under the light rail section. adopting groutingreinforcement, stabilization by jet grouting pile which can reduce the settlement andmake sure the safety construction and operation of metro and light rail.