【作者】 方幸； 米振莉； 赵爱民； 熊靖芸； 王贺伟； 华维；

【Author】 FANG Xing;MI Zhenli;ZHAO Aimin;XIONG Jingyun;WANG Hewei;HUA Wei;National Engineering Research Center for Advanced Rolling and Intelligent Manufacturing,University of Science and Technology Beijing;Collaborative Innovation Center of Steel Technology, University of Science and Technology Beijing;Beijing National Innovation Institute of Lightweight Ltd.;Technology Centre of Panshui Jianlong Steel Co.;

【机构】 北京科技大学高效轧制与智能制造国家工程研究中心； 北京科技大学钢铁共性技术协同创新中心； 北京机科国创轻量化科学研究院有限公司； 磐石建龙钢铁有限公司技术中心；

【摘要】 盘扣式脚手架因其安全可靠、结构稳固以及造型美观等优点,被广泛用于建筑施工中。为了使盘扣式脚手架在使用中更方便且使用时间更长久,对盘扣式脚手架进行长寿命、轻量化研究。本文通过材料性能提升、生产工艺优化、材料结构优化三个方面对盘扣式脚手架的生产进行优化,提出了一套盘扣式脚手架长寿命、轻量化的生产设计方案。结果表明,优化后的专用钢带屈服强度比Q355提升约100MPa,耐蚀性提升24%。明确了在(300±20)A,(30±2)V,(38±2)rpm转速条件下,可以获得良好的焊接质量。同时,专用带钢制成的立杆环焊缝强度相比Q355进一步提升了20%左右。通过数值模拟的方式优化了锁头浇注工艺,将双浇道工艺改为单浇道工艺,报废率从19%降为3%。通过数值模拟模拟脚手架受力情况,进行结构轻量化研究,制备了新型圆盘与锁头,其在原基础上可减重7%～15%。更多还原

【Abstract】 Turnbuckle scaffold is widely used in building construction because of its safety, reliability, structural stability and aesthetic appearance. In order to make the use of turnbuckle scaffold more convenient and longer, long-life and lightweight turnbuckle scaffold has been studied. In this paper, the production of turnbuckle scaffold is optimised through three aspects:material performance improvement, production process optimisation and material structure optimisation, and a long-life,lightweight production design for turnbuckle scaffold is proposed. The results show that the optimised special steel strip has a yield strength increase of approximately 100 MPa over Q355 and a 24% increase in corrosion resistance. It is clear that good weld quality can be achieved at(300±20)A,(30±2)V and(38±2)rpm speed conditions. At the same time, the strength of the ring weld of the riser made of the special strip is further improved by about 20% compared to Q355. The lock casting process was optimised by means of numerical simulations and the scrap rate was reduced from 19 % to 3 % by replacing the double-pouring process with a single-pouring process. Numerical simulations were carried out to simulate the stresses on the scaffold, and a new type of disc and lock was prepared, which can reduce the weight by 7%～15% from the original base.更多还原