Bridge monitoring and evaluation method for shield tunnel construction under-pass high-speed railway bridge
An evaluation method and technology of shield tunneling, applied in the direction of instruments, data processing applications, resources, etc., can solve problems such as adhesive contamination of track slabs, damage to track slab concrete protective layers, and system errors in optical fiber monitoring results, etc., to achieve automatic Remote monitoring, low cost, comprehensive monitoring effect
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[0040] In order to facilitate the understanding of the present invention, the present invention will be described in more detail below in conjunction with the accompanying drawings and preferred embodiments, but the protection scope of the present invention is not limited to the following specific embodiments.
[0041] Taking an intercity railway shield tunnel passing under an abandoned high-speed railway bridge in Guangzhou as an example: the construction of an intercity railway shield tunnel passes through the viaduct holes under a certain road, and the buried depth is 13.3-15.7m. The weakly weathered sandy mudstone is easily softened by water, and the overlying soil is mainly silty sand layer and clay layer. The shield section is excavated by two earth pressure balance shield machines with a diameter of 8.84m. An intercity railway shield construction underpasses a viaduct section with a length of about 330m, and passes through two abandoned high-speed railway bridges. The s...
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