Design Calculation And Constructions Of Underground Continuous Wall Engineering Of WANGTAN Power Station

This text takes the project of underground continuous wall engineering of WANG TAN's power station as the background, by the emphases in actual engineering using of design calculation of the underground continuous wall, summarized advanced construction method of underground continuous wall engineering.As one kind of support system of the deep foundation, underground continuous wall has many likenesses by the force getting of steel sheet pile, cast-in-place pile and the other kind of soil retaining structure, but because of the big depth underground, the high rigidity, and the big number of working condition during construction, the calculation of design has it's own particularity.Comprehensive consider the theories system and the method of calculation , the static calculation theories of underground continuous wall can divided into the four methods of the following, (1) lading structure method;(2)modified lading structure method;(3)strata structure method;(4) finite element method.In the construction method selection of WANGTAN power station underground consecution wall project, make use of finite element method to check the stability of underground continuous wall. Finally result is both ordinal and converse methods are all viable, but to satisfy the requirement of stability, both of the method need make use of the pile in the middle (partition for converse methods) as the pole and the fulcrum. Still suggested the form of the support system at the same time. During the real construction period, in order to suit for the requirement of schedule as well as economic, two kinds of method for open excavation were advised. The calculate was taken again to check the influence of the stability of the structure. The result discover under the existing parameter, two kinds of method all need at least 1:2 slope, and can satisfy the structure stability request.This text tallied up the process of the Double Wheel Trench Cuter running in actual engineering of construction. These results can provide the reference for the similar engineering, also can enrich the development of underground consecution wall design and construction technical.