钢结构在设计、制造和施工过程中可能产生各种缺陷,在使用阶段因超载、锈蚀和疲劳等原因会引起损伤累积而影响结构的安全.因此,如何加固修复损伤钢结构一直是土木工程领域研究的一项重要课题.碳纤维增强复合材料(Carbon Fiber Rein-forced Polymer,简称为CFRP)加固技术是一种具有独特优势的加固方法,在加固钢筋混凝土结构和砌体结构中具有较为成熟的研究及应用,而对加固钢结构的研究及应用依然很少.采用有限元软件Ansys建立了“三维实体-弹簧-壳”的有限元计算模型,通过课题组对CFRP加固轴心受压方钢管柱的试验研究,验证有限元模型的有效性.

Focusing on the merit of process parallelism existing in the actual production,a job-shop scheduling model for parallel processes is proposed in this paper which aims to minimize makespan and considers machine flexibility among production processes.This model is implemented with a genetic algorithm-based scheduling algorithm in which a blocking encode method is used and a corresponding decode measure is put forward,which is suitable for parallel processes.The experiment result shows that the scheduling algorithm can solve the job-shop scheduling problem with parallel processes effectively.

The Open Shelves on loan is a kind of service system to conform to the demands of the times and constantly strengthen the reforming of books borrowing in the library.This article illustrates the advantages of offering service of Open Shelves on loan from different angles and the methods and measures for constantly perfecting its management system have been put forward.