Key Points and Mechanical Effects of Double-Side Widening Technology of Highway T-Beam Bridges
Based on the double-side widening engineering of Guojiagou Bridge of the Taiyuan liaison line project on Qingyin Expressway,this paper studied the connection between new and old bridges and the construction process of the widening on both sides of the highway T-beam bridge.The finite element software midas Civil was used to analyze the mechanical performance of the widened bridge under the effects of settlement difference between new and old bridges and the shrinkage creep of new and old concrete.Key points of the design and construction technologies and corresponding control measures were put forward,providing a reference basis for the design,construction,and later management and maintenance of similar engineering in the future.
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