Abstract:

  Taking one of the highway tunnel as an example, the author compares and analyses the advantages and disadvantages of "method of constructing side wall foundation first" and "no side wall foundation method". Then, the author suggests that in order to make the concrete side wall of the second lining and the cable duct an integral part, connection rebar should be used. Due to the drawbacks as "it is difficult to control the positions of the rebars" and "erection rebar needs some assistant measures" of the rebar embedding method, rebar planting method, instead of rebar embedding method is used during construction. Finally, comparison is made between rebar embedding method and rebar planting in terms of construction quality, construction materials and construction schedule, which concludes that rebar planting method is superior to rebar embedding method

Key words:  highway tunnelcable duct, connection rebarrebar embedding methodrebar planting method