The Vertical Compressive Strength Bearing Capacity Research About After Grouting Rock-Socketed Pile

Pile uses commondly,widely,with a long history.Pile foundation has been more mature,but because of the different geological conditions,combining with the theory of pile foundation and the engineering practice meets the huge challenge.Post grouting embedded rock pile combines with post grouting technology in the basis of rock socketed pile,to overcome inherent shortcoming of the rock socketed pile in the construction process,improve bearing capacity of pile embedded in rock,have very good application value and economic significance.This paper counter special geological conditions of the proposed project in Dandong area, putting forward post grouting embedded rock pile construction technology,introducing the whole construction process,post grouting parameters choice and some problems,According to the standard and The calculation formula of the local experience,combining with the engineering practice,estimating the weathered granite and strong weathered granite post grouting embedded rock pile single pile vertical ultimate bearing capacity theory calculation.Analysis static load test datas,research the distribution law of post grouting pile embedded in rock the axial force of pile,pile side resistance,the pile end resistance,the pile-rock resistance,the pile-soil resistance under the condition of different pile length,according to the Q-S curve and the related standards,Getting the weathered granite and strong weathered granite post grouting embedded rock pile single pile vertical ultimate bearing capacity the measured values.Simulatting test of pile stress through FLAC3D software,getting single pile vertical ultimate bearing capacity the measured values,contrast the simulated values,the measured values and the theoretical calculation value,checking FLAC3D software feasibility,getting post grouting embedded rock pile construction technology to fit Dandong area,determining the range of post grouting embedded rock pile the weathered granite and strong weathered granite side resistance enhanced coefficient,end resistance enhanced coefficient,to provide references for pile foundation in Huludao area and the pilereinforcement design.