预制墩新型钢混组合连接装置力学性能参数分析

Analysis on Mechanical Performance Parameters of New Steel-concrete Composite Connection Device for Prefabricated Piers

摘要:

以工程104国道杭州河庄至衙前段工程南阳北互通NW匝道预制拼装桥墩1#墩~5#墩为研究背景，建立了精细化的桥墩数值分析模型，考虑不同屈服强度钢板、壁板高度对预制墩柱力学性能的影响。研究结果表明：连接装置强度越大，壁板高度越高，水平承载能力越强；降低壁板高度、使用低屈服点钢材，可以提高墩柱耗能能力；选用高屈服点钢材，可使锚杆起到分担荷载的作用，同时可提高连接装置与墩柱间的连接性能。

Abstract:

With taking the prefabricated assembled piers 1#~5# of Nanyang North Interchange NW ramps in the 104 National Highway Hangzhou Hezhuang to Yaqian Project as the research background, the refined pier numerical analysis model is established to consider the effects of different yield strength steel plates and wall plate heights on the mechanical performance of prefabricated pier column. The results show that the greater the strength of the connecting device, the higher the height of wall plate, and the stronger the horizontal bearing capacity. The reduction of the wall plate height and the use of low-yield point steel can improve the energy consumption capacity of the pier columns, and the choice of high-yield point steel can make the anchor rod play a role in load sharing, and at the same time, can improve the connecting performance between the connecting device and the pier columns.