The Design and Construction of Cast-in-place Support for Variable Cross-section Continuous Box Girder on Deep and Thick Soft Foundation
Based on the design and construction example of(39+65+39)m span single-box and four-chamber variable cross-section cast-in-place box girder under deep and thick soft soil foundation of Hangzhou Nation-al Highway 235 project,combined with the engineering characteristics of mucky silty clay geology,super wide and large span,and the requirements of existing roads and construction access roads to keep open,the combined support of prestressed tubular pile+bailey beam+disc support is adopted according to the local conditions.The MIDAS Civil finite element analysis software is used to calculate and analyze the support structure and key units to ensure that the support structure is safe and reliable,the use of materials is economical and reasonable,and the construction is convenient and meets the requirements of on-site use,so as to provide reference for the construction of similar projects.
deep and thick soft foundationcontinuous box girder cast in placeaccess road to keep opencombined support
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