| 引用本文: | 丁玉坤,张文元,孙洪鹏,郑睿,李文文,张耀春.考虑炉体作用的塔式锅炉钢结构抗震性能分析[J].哈尔滨工业大学学报,2016,48(6):43.DOI:10.11918/j.issn.0367-6234.2016.06.007 |
| DING Yukun,ZHANG Wenyuan,SUN Hongpeng,ZHENG Rui,LI Wenwen,ZHANG Yaochun.Analysis for seismic behavior of tower type boiler steel structure considering action of boiler[J].Journal of Harbin Institute of Technology,2016,48(6):43.DOI:10.11918/j.issn.0367-6234.2016.06.007 |
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| 考虑炉体作用的塔式锅炉钢结构抗震性能分析 |
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丁玉坤1,2,张文元1,2,孙洪鹏3,郑睿1,李文文1,张耀春1
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(1.哈尔滨工业大学 土木工程学院,150090 哈尔滨;2.结构工程灾变与控制教育部重点实验室(哈尔滨工业大学), 150090 哈尔滨;3.北京巴布科克.威尔科克斯有限公司,100043 北京)
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| 摘要: |
| 针对某1 000 MW褐煤塔式锅炉钢结构，为研究抗震分析中采用无炉体的简化结构模型(炉体对主钢架的地震作用通过在主钢架上施加炉体质量来实现)的可行性,重点考察了有、无炉体的结构抗震性能的差别.当有炉体时，还考察了主钢架与炉体间有、无止晃杆件两种情况下结构的抗震性能.分析表明：多遇地震下，结构均处于弹性.与有炉体结构相比，无炉体结构中主钢架的杆件应力较大；罕遇地震下，部分中心支撑受压失稳并有塑性发展，主钢架的偏心支撑无塑性发展，部分钢梁有轻微塑性发展，柱子基本处于弹性；止晃杆附近部分杆件受力较大，甚至有塑性发展，建议这些杆件的设计中考虑止晃杆传力的影响.多、罕遇地震下，主钢架层间侧移均小于规范限值.总体上，与有炉体的结构相比，无炉体的结构主钢架层间侧移和楼层侧移响应较大,表明采用无炉体的简化结构模型基本可行.
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| 关键词: 塔式锅炉钢结构 支撑钢框架 炉体作用 抗震性能 炉体止晃杆 偏心支撑 |
| DOI：10.11918/j.issn.0367-6234.2016.06.007 |
| 分类号:TU393.2; TU392.6 |
| 文献标识码:A |
| 基金项目:北京巴威有限公司科技攻关项目(CE2012-1). |
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| Analysis for seismic behavior of tower type boiler steel structure considering action of boiler |
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DING Yukun 1,2, ZHANG Wenyuan1,2, SUN Hongpeng3 , ZHENG Rui1, LI Wenwen1, ZHANG Yaochun1
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(1.School of Civil Engineering, Harbin Institute of Technology, 150090 Harbin,China;2. Key Lab of Structures Dynamic Behavior and Control (Harbin Institute of Technology), Ministry of Education,150090 Harbin, China; 3. Babcock & Wilcox Beijing Co., Ltd., 100043 Beijing, China)
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| Abstract: |
| A simplified model for seismic analysis of a 1 000 MW tower type lignite boiler steel structure was studied, in which the mass of boiler is added to main steel structure replacing its seismic action. The seismic behavior differences among the simplified model and two models with boiler are studied. One of the two models with boiler used steel bars to inhibit sway of boiler. All of the models remain elastic under small earthquake actions, and the stress responses are the largest in simplified model. Under strong earthquake actions, some concentrically compression steel braces are buckling with plastic deformation and some beams have plastic deformations while eccentrically steel braces in the main steel structures and steel columns remains elastic. Some members near the steel bars develop plastic deformations due to the increased loads applied by the bars, which should be considered in design. Under both small and strong earthquake actions, inter-story deformations of the main structures are much smaller than the design code limits. Both lateral deformations and inter-story deformations of the main structures in the simplified model are the largest.
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| Key words: tower type boiler steel structure braced steel frame action of boiler seismic behavior steel bar used to inhibit sway of boiler eccentric brace |
