Key Technologies of Design Optimization and Construction of Utility Tunnel Under EPC Mode
Based on the preliminary design drawing of utility tunnel of Nanjing Hengjiang Avenue rapid transformation project,the construction method,section and length of the utility tunnel were compared and determined in advance by making full use of the management characteristics of EPC mode.Through the optimization of shield division,linear and lateral bulkhead,and the special design of vertical bulkhead materials,a set of economical,reasonable,simple and feasible utility tunnel design scheme formed.Through the research on the concrete casting technology and the lateral-vertical partition installation technology in the narrow space of shield utility tunnel,the application of self-deformation tire concrete carrier,integrated installation carrier and ALC vertical partition installation technology in engineering construction was proposed,and the effect was good.
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