Study On The Detection Technology Of Structural Function Of Sub-Sea Tunnel On Xia-Men East Passage

Relying on to Chinese first subsea tunnel,this paper has studied Civil structure and function of Xia'men subsea tunnel detection technology,which has strong practical value.This paper has done the following:(1) By reviewing the general structure and function through the tunnel detection technology,the paper has researched detection technology such as empty, lining split, corrosion and other defects, including the detection of frequency and tunnel all A Qualitative Investigation.(2) By analysising subsea tunnel on-site monitoring data,the paper retains structural factors affecting safety:decreased clearance due to the displacement variation.Through researching initial support guidelines collapse site, two lining of water leakage, cracks and landslides situation,the paper found the affection of empty holes to structure,the affeciong of the site of crack crack depth and width to structural safety and reinforcement corrosion caused by the decline in capacity.Besides the paper has presented the detection methode for the factors.(3) The structural safety in tunnel operation is concrete durability. Through field investigation of concrete cover thickness, Research articles were calculated for the carbonation inside the section in the context of life and in the chloride environment outside of the cross section of life under the circumstances,and presents a reinforcement layer thickness in the case of closed beta 2.5cm 4.7cm lateral 30a does not require reinforcement before testing conclusions.(4)For the aforementioned factors, this paper analyzes the entire tunnel section area was detected,and paper for the content of each section had different detection stage partitions.(5) Lot subsea tunnel area, due to the strong water permeability and strong corrosion of steel, there are more during construction of the seepage of water, initial support has begun to erode some of the structure, especially in weathered deep channel section, will affect the secondary Lining security, special attention due to the detection, strengthening the frequency of testing.