摘要:
高效能标准化钢结构的质量是否能够达到要求需要通过质量检验来判断,而抽样检验是目前最常用的方法。根据计数抽样检验的数学基础,采用二项分布对现行规范的抽样方案进行分析,分别得到接收质量限(AQL)为5%和10%时的生产方风险和使用方风险质量,可以使钢结构生产方和使用方明确各抽样方案各自的风险;同时,针对接收质量限(AQL)为3%和8%两种情况,制定判定准则及明确使用方和生产方风险,可用于对质量有更高要求的工程的质量检查。钢结构项目孤立批的质量检验过程中,对于优先保护使用方的情况,针对不同的检验水平,分别对极限质量(LQ)为5%、10%、15%、20%的情况进行分析;对于优先保护生产方的情况,针对不同的检验水平,分别对接收质量限(ALQ)为5%、10%的情况进行分析,由此可提供优先保护使用方或优先保护生产方的各检验水平的抽样方案。
Abstract:
Whether the quality of high-efficiency standardized steel structure can meet the requirements needs to be judged by quality inspection, and sampling inspection is currently the most commonly used method. According to the mathematical basis of counting sampling inspection, the binomial distribution was used to analyze the sampling scheme of the current specification, and the application risks of the user and the producer were given when the AQL of the received quality limit is 5% and 10%, respectively, which is conducive to the establishment of a clear understanding of risk for the producer and the user of the steel structure. At the same time, for the two cases of the AQL of the received quality limit being 3% and 8%, the determination guidelines were formulated and the risks of the user and the producer were clarified, which It can be used for quality checking of projects with higher quality requirements. For the inspection process for isolated batches of structural steel: for the cases of priority protection of the user, the analysis should be carried out for different levels of inspection, for cases with limit quality LQ of 5%, 10%, 15%, and 20%, respectively; for the case of priority protection of the producer, the analysis should be carried out for different levels of inspection, with acceptance quality limit ALQ of 5% and 10%, respectively; thus, a sampling plan for each inspection level, can be provided with priority protection for the user or priority protection for the producer.
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