ISSN 2096-4498
CN 44-1745/U
Tunnel Construction ›› 2019, Vol. 39 ›› Issue (6): 1045-1051.DOI: 10.3973/j.issn.2096-4498.2019.06.019
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JIANG Xiaotian
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Abstract:
During the jacking of large crosssection pipe curtain boxculvert, the instability of earth pressure on tunneling face often causes failure of pipe curtain system. As a result, an earth pressure balanced boxculvert tunneling machine is designed for jacking construction of Tianlin Road crossing underneath Central Ring Road in Shanghai. The design conditions and main parameters selection of boxculvert tunneling machine, stress analysis of shell structure and its application and effect are introduced. The results show that: (1) The balance of front earth pressure of boxculvert tunneling machine is conducive to surface settlement control. (2) The force analysis results of shell structure of boxculvert tunneling machine by SolidWorks 3D platform indicates that the structural design can fully meet the construction load conditions. (3) The attitude control of boxculvert tunneling machine mainly relies on the completed pipe curtain as guidance, and the deviation can be adjusted by synchronous jacking system. (4) The cutting blind area in the cutterhead configuration will cause excessive jacking force in the construction process of reinforcement area.
Key words: earth pressure balanced boxculvert tunneling machine, equipment parameters, force analysis, numerical simulation
CLC Number:
U 452
JIANG Xiaotian. Design of Earth Pressure Balanced Boxculvert Tunneling Machine[J]. Tunnel Construction, 2019, 39(6): 1045-1051.
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