HU Zhijian,YIN Bingsen,YU Wensheng.Analysis of flexural behavior of prefabricated deck slab with UHPC joints[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,2021,60(06):29-35.
HU Zhijian,YIN Bingsen,YU Wensheng.Analysis of flexural behavior of prefabricated deck slab with UHPC joints[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,2021,60(06):29-35. DOI: 10.13471/j.cnki.acta.snus.2019.11.20.2019B116.
Analysis of flexural behavior of prefabricated deck slab with UHPC joints
In order to optimize the construction of the in-situ cast joints of the ultra-high performance concrete of the prefabricated bridge deck,the bending behavior of UHPC in-situ cast joints of prefabricated deck under bending moment is analyzed. The cohesive zone model is used to simulate the interface of in-situ cast joints. With experimental validation, the joint widths, reinforcement ratios and joint interface shapes are three types of parameters considered in finite element models. The result indicated that UHPC could be used as the casting material with a reduced joint width of 15 cm. The joint shape of cuneiform or diamond showed better flexural performance of the jointed panels than the shape of rectangular. The maximum reinforcement ratio of UHPC in-situ cast joint shouldn’t be greater than 2.6%.
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