Analysis And Simulation About Steel Bar, Soil-cement Mixing System On SMW

With the continuing escalation of the scale of urban construction, the ground space has become increasing increasingly saturated .People began to develop and utilize the underground space for urban. The primary task in the development of underground space is the foundation pit engineering and high demand for construction technology along with the continuous deepening of the development of the development of underground space.SMW technology which is simple, workable and a shorter period, lower cost and environmental pollution and other obvious advantages has been highly concerned by people. But it is restricted by unadvanced equipment, unperfect theory for design, indefinite mechanics principle and a lot of other things in China.The result of research in and abroad has been summarized in treatise. The reinforce theory and capability of cement-soil has been found out for mathematic and finite element model. According to some mathematic suppose of others', author build up a mathematic model of SMW in pure bending condition for:1.investigating the intensity of SMW with and without cement-soil;2.analyzing the relationship between cement-soil and SMW system;3.sending out a suitable parameter for cement-soil crack;4.contrasting the splitting and bending capacity of each SMW forms.After that , a finite element model with the help of"QimStar"been build up according to a project in HangZhou for analyse. The result which be the same with actual cases proved that the supposes in this finite element model are rational and dependable.It is easier to observe and search the expanding of cracks to know the key point of the SMW method.The mathematic model also be proved to be rational by the data of actual cases.So it can been used for design.