Study on the Influence of Joint Form and Location on the Dynamic Performance of Prefabricated Box Culvert
Compared with cast-in-situ box culverts,prefabricated box culverts have the advantages of fast and con-venient construction,high quality,environmental protection and energy saving so that they are widely used in mod-ern engineering construction.Five finite element models of prefabricated box culverts were established by ABAQUS software.The effects of different joint forms and positions on the dynamic performance of prefabricated box culverts were studied by comparing the important indexes such as damage contours,hysteresis curves and skeleton curves of the models.The results show that the maximum bearing capacity of each prefabricated box culvert is reduced by dif-ferent degrees compared with the cast-in-place box culvert;When the joint position is the same,the peak energy dissipation curve of the assembled tenoned box culvert is increased by about 57％and the peak bearing capacity is increased by about 30％compared with the assembled circular articulated box culvert;When the joint is located at the bottom,the bearing capacity of the assembled tenoned box culvert and the assembled circular articulated box culvert are greater than that when the joint is located in the middle.The hysteretic loop is relatively fuller with stronger hysteretic energy dissipation capacity.The research results can provide reference for the study of the dy-namic performance of similar prefabricated box culverts.
prefabricated box culverttenon jointhinge jointdynamic performancehysteresis energy consumption
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