Shield tunnel lateral cross-over pile base construction method
A technology of shield tunneling and construction methods, which can be applied to tunnels, earthwork drilling, mining equipment, etc., and can solve problems affecting the safety of existing pile foundations and surrounding environmental facilities
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[0040] This embodiment is a construction method for the shield tunnel (Jiuting Station-Qibao Station) shield tunneling (Jiuting Station-Qibao Station) of the first phase project of Shanghai Rail Transit Line 9 that crosses the bridge pile of the first pier of the Zhongchun Road Overpass Bridge, and its technological process As shown in Figure 1, it specifically includes the following main steps:
[0041] First, engineering research:
[0042] Investigate the basic conditions of the pile foundation and the surrounding environment that the shield tunnel needs to pass through in the crossing section: the shield tunnel needs to pass through two spans of the Zhongchun Road overpass, which is very close to the bridge pile of one of the piers, only about 1.5m; according to The impact zoning standard proposed by Japan on the construction of tunnels close to existing structures, the tunnel construction area belongs to the strong impact area;
[0043] Second, the analogy and calculation...
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