A STUDY ON EFFECT OF STRUCTURAL FACTORS ON STABILITY OF COUPLER STEEL TUBE FALSEWORK
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摘要: 采用手动加载和电测相结合的方法,跟踪记录扣件式钢管模板支架整架模型结构失稳的全过程以及各构造因素的应力变化情况。在此基础上,详细分析水平杆和剪刀撑的受力性能以及二者之间的相互影响。研究发现:支架水平杆的应力值随剪刀撑设置的加强而减小,并显著低于剪刀撑应力;剪刀撑可有效降低支架立杆内力分布的不均匀性。根据现场模板支架的实际情况,提出剪刀撑设置标准,相关成果可为设计和施工人员提供参考。Abstract: Using the method of integration hand loading with electrical measurement,it was done a tracking record of the whole model's structural instability and stress change in the structural factors of the coupler steel tube falsework.And then the paper detailedly analysed the forced property of the horizontal pole and the bridging and mutual influence between them.The results show that the stress of the pole becomes less when bridging gets stronger and is significantly less than the bridging stress;and bridging can effectively reduce the internal force uneven distribution of the pole.According to the actual situation of construction, the paper puts forward relevant setting standard of the bridging,which can provide a reference for designers and constructors.
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Key words:
- coupler steel tube falsework /
- horizontal pole /
- bridging /
- structural factors
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胡长明,葛召深,王静,等.扣件式钢管模板支架剪刀撑研究[J].施工技术,2009,38(6):70-72. [2] Yu W K,Chung K F,Chan S L. Structural Instability of Multi-Storey Door-Type Modular Steel Scafflods[J]. Engineering Structures,2004,26(7):867-881. [3] PengJL,ChanSL,Wu C L. Effects of Geometrical Shape and Incremental Loads on Scaffold Systems[J]. Journal of Constructional Steel Research,Elsevier Science Direct,2007,63:448-459. [4] PengJuiLin. Stability Analyses and DesignRecommendations for Practical Shoring Systems During Construction[J]. Journal of Construction Engineering and Management,ASCE,2002,128(6):536-544. [5] PengJL,PanA D,ChenW F. ApproximateAnalysisMethod for Modular Tubular Falsework[J]. Journal of Structural Engineering,ASCE,2001,127(3):256-263. [6] 施炳华.探讨扣件式钢管脚手架的稳定计算问题[J].施工技术,2004,33(2):21-22. [7] 杜荣军.脚手架结构的稳定承载能力[J].施工技术,2001,30(4):1-5. [8] 敖鸿斐.双排扣件式钢管脚手架整体极限承载力研究[D].上海:同济大学,2000. [9] 徐崇宝,张铁铮,潘景龙,等.双排扣件式钢管脚手架工作性能的理论分析与试验研究[J].哈尔滨建筑工程学院学报,1989,22(2):38-55. [10] 刘建民,曹普田,李慧民.房屋建筑扣件式钢管模板支架立杆间距的确定[J].四川建筑科学研究,2006,32(4):37-40. [11] 胡长明.扣件联接钢结构试验及其理论研究[D].西安:西安建筑科技大学,2008. [12] 胡长明,曾凡奎,沈勤,等.构造因素对高支模稳定承载力的影响[J].华中科技大学学报:城市科学版,2008,25(4):57-60. [13] 闫鑫,胡长明,曾凡奎,等.顶端伸出长度对高大模板支架稳定承载力的影响分析[J].施工技术,2009,38(4):73-75. [14] 曾凡奎,胡长明,闫鑫,等.扣件式钢管模板支架稳定性试验研究[J].工业建筑,2010,40(2):28-31. [15] 胡长明,葛召深,王丽芳,等.扣件式钢管模板支架静压变形特性的试验研究[J].工业建筑,2010,40(2):32-35.
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