Abstract:In order to study how to construct super deep and high-rigidiy underground diaphragm wall in the limited underground space of central city area,Shanghai rail transits line 19 Shibo Avenue station project introduces the locking steel underground diaphragm wall construntion method in the construction of foundation pit enclosure,and carries out the experimental study of this construction method.This paper describes the key construction technology of this method and analyzes its practical application results.The results show the feasibility of the locking steel underground diaphragm wall in the construction of foundation pit enclosure in soft clay of central city area. This method has the advantages that the steel members are made in factory,the water-proofing effect is good and the work space can be saved,particularly when it is used in the limited space of central city area of large-scale and rapid engineering,its superior performance can be seen.
