高烈度地震区电厂侧煤仓间结构静力弹塑性分析
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（河北省电力勘测设计研究院，石家庄 050031）[摘要] 侧煤仓是火力发电厂内重要建筑，且结构复杂，受工艺专业布置限制，侧煤仓结构质量和刚度分布很不规则，存在明显的薄弱层，因此，高烈度地震区侧煤仓结构的抗震设计显得尤为重要，对该类结构进行罕遇地震作用下的弹塑性变形分析是必要的。运用Pushover方法对位于高烈度地震区的某电厂钢筋混凝土侧煤仓结构进行弹塑性分析，通过考查该结构塑性铰出现的位置及顺序、弹塑性层间位移角，验证了其在罕遇地震下的抗震性能。结果标明，该结构第一批塑性铰出现在梁端，符合“强柱弱梁”要求，弹塑性层间位移角符合规范要求。本文结果可为今后高烈度地区钢混结构侧煤仓设计提供参考。[关键词] 侧煤仓间; Pushover; 弹塑性分析; 塑性铰中图分类号：TU352.1 文献标识码：A 文章编号：1002-848X(2013)S2-0406-05Static elastoplastic analysis of boiler-side bunker structures of power plant in high-intensity seismic areasZhou Xia, Ma Tao(Hebei Electric Power Design Research & Institute, Shijiazhuang 050031, China)Abstract: The boiler-side bunker is an important building in coal-fired power plants, which is a complex structure and restricted by technology professional arrangement. The quality and rigidity distribution of the boiler-side bunker are irregular, resulting in obvious weak layers. Therefore, the seismic design of boiler-side bunker structure in high earthquake intensity region is of great importance. It is necessary to analyze the elastic-plastic deformation of boiler-side bunkers under severe earthquake. Pushover analysis method is used to realize elastic-plastic analysis on a reinforced concrete boiler-side bunker in high earthquake intensity region. It verifies the seismic performance of the structure under severe earthquake by studying the position and order of plastic hinge, as well as elastic-plastic inter-story drift angle. The results indicate that the first batch of plastic hinge on the structure appears on the beams-end, conforming to the requirements of the "strong column and weak beam". The elastic-plastic inter-story drift angle also conforms to the specification requirements. In the future, the paper results can be used as reference for the design of reinforced concrete boiler-side bunkers in high earthquake intensity region.Keywords: side bunker bay; Pushover; elastic - plastic analysis; plastic hinge
