Research on the Construction Sequence of Trench Cutting Re-mixing Deep Wall(TRD)and Bored Pile
This paper takes Changcheng Road Station in the work area 03 of bidding section 1 of the first phase of the civil construction of Qingdao Metro Line 9 as the background.Based on the construction environment of the south side of Changcheng Road Station where bored piles are closely adjacent to the traffic diversion road,and the 35 kV high-voltage line to the west,through fully studying the advantages and disadvantages of different TRD and bored pile construction sequences,as well as the related control points,the construction sequence of first construction of TRD and then construction of bored pile is finally determined.After the excavation of the foundation pit at Changcheng Road Station,there is almost no water leakage on the initial support surface,and the effect of the water-stop curtain is good.It provides an important experience reference for the determination and research of the construction sequence of TRD and bored pile in subway station construction.
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