针对实际工程中隔震沟潜在的构造缺陷影响展开研究.以某10层混凝土框架隔震结构为研究对象,建立了线弹性碰撞模型,分析讨论了隔震沟不同填充物填充、隔震沟碰撞间隙、跨隔震沟管道连接形式等影响参数.结果表明:结构楼层的加速度随填充材料碰撞刚度的增加而增大;当隔震沟填充物为混凝土块时,加速度响应最大;结构响应随隔震沟间隙的增加,呈先增大后减小的趋势,并趋于稳定;当跨隔震沟管道部分刚接或隔震沟部分填充时,结构产生了明显的扭转效应,增大了支座与结构的损伤风险.
This paper studied the impact of potential structural defects in isolation trenches in practical projects. Taking a 10-story concrete frame isolation structure as a research object, this study used the linear elastic collision model to analyze and discussed the influential parameters of different fillers of the isolation trench, impact gap of the isolation trench, connection form of the pipeline across the isolation trench, etc. The results indicated that the acceleration at the bottom of the structure increased with an increasing collision stiffness. When the isolation ditch was filled with concrete fragments, the acceleration response was the highest, and the structural response gradually increased and tended to stabilize with an increase in the isolation ditch clearance. When the pipeline crossing the isolation trench was rigidly connected or partially filled, the structure produced a significant torsional effect, which increased the risk of damage to the support and structure.
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