某超限底部框架-抗震墙砌体结构截桩增设基础隔震层加固设计实践

Reinforcing design practice for adding a base isolation layer in the cutting pile of an over-limit frame-shear wall masonry structure

对某超限底部框架-抗震墙砌体结构隔震加固设计过程进行了详细的论述,设计重难点为加固原人工挖孔桩形成上支墩和锚杆静压桩承台,截断上支墩和锚杆静压桩承台间的人工挖孔桩后增设隔震垫。同时也对该类结构加固常见的问题及加固技术进行了论述,为在超限底部框架-抗震墙砌体结构中使用隔震技术进行了探索。

This work reviews in detail the design process for conducting base isolation and reinforcement for an over-limit frame-shear wall masonry structure,particularly on two major difficulties in design.To be specific,the platform formed by the previous manual hole digging pile between upper buttress and pressed pile by anchor rod should be reinforced.Second,a shock isolation cushion should be added after the manual hole digging piles between upper buttress and pressed pile by anchor rod is cut off.Moreover,common problems and reinforcement technologies for such a structural reinforcement were also discussed to investigate the use of seismic isolation technology in the over-limit frame-shear wall masonry structure.