Study on Seismic Performance of Precast Bridge Capping Beam-pier System under Eccentric Action
In order to study the seismic performance of precast double column piers with different capping beam segments and capping beam-pier connection methods under eccentric loading,seven groups of precast double column pier models were established by using finite element software ABAQUS to carry out quasi-static simulation analysis under eccentric loading.Withing changing the capping beam segments and capping beam-pier connection methods,the hysteresis curve,skeleton curve,failure mode,energy dissipation performance,ductility,etc.,and the seismic performance of double column piers was studied.The results show that The results show that the load performance of the bridge piers connected by grouted sleeves and pre-stressed connections in the capping beam segment is slightly improved compared to cast-in-place bridge piers,with an improvement range of less than 10%,and the seismic performance parameters are almost the same.With connected by inclined key teeth of the capping beam,grouting sleeve and prestressed connection of the capping beam-pier have basically the same performance as the cast-in-place bridge piers,and also have good seismic performance and integrity,meeting seismic requirements.
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