A Research On Consolidation Settlement Of Plateau Lacustrine Deposits Soft Soil

Dianchi valley is located in Kunming, because of the many rivers and lakes in the region, so the soft soil distribution is very wide. With the development of economy, the city building of kunming is also increasing, there are many building to be built on such foundations, Therefore the treatment of soft soil foundation would be a very important job. This paper gives a systematic rescrach on consolidation settlement in the Plateau Lacustrine Deposits soft soil based on the soft foundation treatment of a government office building relocation project in kunming.Firstly, we gives a rescrach on the engineering geological characteristics of the Plateau Lacustrine Deposits soft soil(peat soil) through the indoor triaxial test, microstructure test of the X-ray diffraction and scanning electron microscopy, situ DMT test and other data.Range engineering geological characteristics is obtained about this type soft soil, such as high organic matter content," high compressibility, low shear strength, dry strength low toughness,the honeycomb structure, and overhead structure and the structure determines the spherical peat engineering geological characteristics of the poor. While DMT test than that more generally conventional test pilot indicators.Secondly, this paper introduced the engineering situation, scheme design, field monitoring data of gravel pile preloading drainage consolidation in the soft foundation treatment based on the soft foundation treatment of a government office building relocation project in kunming,and analyzed.And then studied the Consolidation Parameterβof Plateau Lacustrine Deposits soft soil based on measured data of projects, and compared it through theoretical calculationsβand measured dataβ. The Consolidation Parameterβis obtained about this type soft soil; In the settlement we fitting settlement curve, it is knew final Settlement and the experience coefficient of settlement ms,and analyzed,A calculation formula of settlement experience coefficient is obtained about this type soft soil.Finally, the paper analyzed the control of stability during loading from settlement and pore water pressure based on field test data. It obtained settlement rate of one day within 25mm/d and pore-water pressure coefficient within 0.6 during loading.