Research On Deformation Prediction Model Of Structural Clay Under Traffic Loading

The settlement and uneven deformation of clay foundation generated by traffic loads,will lead to cracking embankment and excessive deformation of pavement.so it will be discomfort and lead to the increased maintenance work.Excessive uniform settlement will reduce the elevation of the road,decrease bridge clearance,thus affecting the normal use.With the construction of the Binhai New Area development needs, various levels of transport facilities will be vigorously developed.In order to ensure the security and stability of the current growing number of large-scale construction,minimize accidents. Making Use of indoor static mechanical tests, strike in soil structure yield stress preconsolidation pressure of this area, analys dynamic mechanical properties of Tianjin binhai new area structural soft soil. Combining the characteristics of traffic loading, analys structural soft soil's dynamic strength and stess-strain relationship development law.The new strain of the destruction of standards was put forward for , and compara dynamic strength indicators under different strain of the destruction standards .In researching the soil pore water pressure and the deformation development,critical dynamic stress ratio,threshold dynamic stress ratio have been given. Comprehensive analysis changes factors of the pore water pressure,pore water pressure model was established in viewing of dynamic stress ratio, cycle-time, threshold dynamic stress ratio and confining pressure.In researching of the development law's process ,the critical dynamic stress ratio, was determianed. Comprehensive analysis changes factors of the pore water pressure, deformation prediction model was established in viewing of dynamic stress ratio, cycle-time, critical dynamic stress ratio and confining pressure.