Method for strengthening box girder prefabricated segment box chamber
A segment and box room technology, applied in bridge reinforcement, bridge, bridge construction, etc., can solve problems such as troublesome implementation, heavy weight, and complexity, and achieve the effect of saving materials, convenient implementation, and computational science.
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[0030] The embodiment of the present invention is the 2312 mark of the R2 line of urban rail transit in Dongguan City, and the bridge erecting machine 3 is used as the DP50 / 30-A3 uplink segmental assembly bridge erecting machine 3; according to figure 1 , when installing the box girder precast section, the RA outrigger 1 of the bridge erecting machine 3 is supported on the beam end of the installed box girder precast section 4, the RB outrigger 2 is supported on the pier 6, and the box girder precast section 5 to be installed Suspended on the bridge erecting machine 3;
[0031] Step 1: After determining the relevant basic data, check and calculate the local pressure of the RB outrigger 2 placed at the pier 6 supporting pad stone:
[0032] The size of the supporting pad is 700mm*700mm; the bottom area of the 3 legs of the bridge erecting machine is 490mm*490mm. During the static load test, the reaction force of RB outrigger 2 is 2710KN, and the important coefficient of the b...
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