Strengthening and reinforcing measure for existing bridge during shield underpassing of high-speed railway bridge
A bridge and high-speed rail technology, applied in the field of reinforcement and reinforcement measures, can solve the problems of uncontrollable deformation and high requirements for settlement, and achieve the effects of increasing bearing capacity, short construction period, and reducing vertical load
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[0046] The application is further described in conjunction with practical cases:
[0047] At present, a rail transit node in Xuzhou passes under a high-speed rail overpass, which has a great impact on the lower structure of the existing high-speed rail bridge. The reinforcement measures for the existing bridge when the shield passes under the high-speed rail bridge provided by this application are used for reinforcement. Since the reinforcement methods are the same, a bridge pier is taken as a representative for illustration, such as figure 1 and figure 2 shown.
[0048] The reinforcement and reinforcement measures for the existing bridge when the shield passes under the high-speed rail bridge include:
[0049] Step 1: Reinforcing pile foundation;
[0050] Step 2: Expand the platform;
[0051] Step 3: Reinforce the pier body.
[0052] The reinforced pile foundation in step 1 adopts bored cast-in-situ piles. After reviewing the hydrogeological survey and original data, th...
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