Title: Analysis of Influences of Ground Stacked Load on Existing Bridge Structure
Abstract: In regard of the situation of the bridge structure safety imperiled by the load stacked nearby the bridge piers in violation of the regulations,the influences of the ground stacked load on the existing bridge structure were studied.A ramp bridge was taken as an example and several indices including the displacement of the girder,pier tops and bearings and the gap changing of the expansion joint of the bridge were continuously monitored.The displacement of the structure was judged to be stable or not at the time the dangerous situation occurred.The American geotechnical software FLAC3 D was used to simulate the spatial deformation and force conditions of the passive piles and the ground stacked load was verified to be the major factor causing the displacement of the piers.The influences of the stacked load on the pile foundations and superstructure of the bridge were theoretically analyzed and the pile foundations were tested by the two-velocity method.The results of the study show that under the action of the ground stacked load,the piers will horizontally displace and will further cause the bearings at the pier tops to displace and the concrete at the junction of the piles and pile cap to crack.It is therefore proposed that the displacement of the ramp bridge structure should be continuously monitored and at the same time,the girder should be restored to its designed position right away and the substructure should be repaired and strengthened.
Publication Year: 2014
Publication Date: 2014-01-01
Language: en
Type: article
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Cited By Count: 1
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