Analysis On The Action Mechanism Of Correcting Buildings With The Method Of Drawing Out Soil

With the development of construction industry, the tilt of buildings (structures) occurs from time to time. Correcting buildings has become an important discipline, in-depth analysis of the mechanism of correcting buildings is especially important.In this dissertation, the writer reviews on the reasons and mechanisms for the leaning phenomena of all types of buildings and constructions,then evaluats on the application characters and limitation of various methods of correcting building, lastly introduces the design method,working principles of correctig buildign with the Method of Drawing out Soil with emphasis,the writer analyses every design point and related design values of the Method of Drawing out Soil,and the soil mechanics, elastic-plastic mechanics are used for analysing the plastic zone and ground subsidence caused by Drawing out Soil. At last some useful conclusions are obtaind.At the same time, FLAC-3D program was applied. Given to one case which has the actual situation of engineering and building, after the numerical model analysis—including the choose of unit type, the defining of material properties, the load cases, boundray condition and the consideration of convergence criterion, trhee-diemnsinoal Morh-Coulomb analysis model of foundation soil was established. Then, the mechanism of corercting building with the Method of Drawing out Soil is investigated.Bsaed on the comparision the five diferent depth of Drawing out Soil holes, the qualititive concept and quantitive comparison are proved by Numerical Analysis, and the reasonable depth of Drawing out Soil hole is 10 meter in this project. In order to improve the acknowledge of civil engineers to the Method of Drawing out Soil in correcting building, the global process of "Drawing-out"soil in the corercting building are modeling by Numerical Analysis,And the rules of the stress-strain behaviour are studied in the process. Then suggest that several times of analysis by Numerical Analysis should be carried out to analyse how Drawing out Soil hole's location,number and depth affect correcting effect, so as to provide technical information for improving design and guide the engineering practice.Finally,the research results are summarized,and the guidance worth of treatise to design and construction is generalized.