排序方式： 共有25条查询结果，搜索用时 46 毫秒
1.
Considering the uncertainty of material performance, geometric characteristic and analysis method, the analysis of statistical parameters of the resistance of cast ball-and-socket support joints and the reliability analysis are carried out by JC method (improved first-order second-moment method) based on the relevant experimental data. Results show that the resistance partial factor of the joint increases with the increase of the reliability index. The resistance partial factors are suggested corresponding to the reliability index under different load combinations. Moreover, the suggested resistance partial factor is adopted in reliability design, and it is found that the reliability index of the joint is larger than the target reliability index. The optimal load combination is the one in which live load plays an important control role. Finally, based on the suggested resistance partial factors, the reliability analysis of cast ball-and-socket support joints of a project is conducted. 相似文献
2.
新工科和行业发展需求对传统水利类专业人才培养提出了新要求,以新技术为支持进行专业改造升级是必然趋势。根据新工科建设要求,水利类专业提升改造的特色主要体现在“两个强调”:强调传统水利工程专业与技术新发展、行业新需求的融合;强调培养具有水利工程全寿命周期智能型应用能力的高素质人才。主要通过升级培养方案、改造课程体系、更新课程内容、革新培养模式、加强特色课程教材建设、推进融合型师资建设与能力提升等途径实现。 相似文献
3.
北票市三宝营乡学校建校于1985年,地处辽宁省朝阳市与锦州市交界处.之所以叫做"小小"型学校,是因为学校规模较小,生源少,目前在校生仅113人.几年来,北票市各级政府在教学设施、教师配备上给了学校诸多支持,使校园的整体面貌焕然一新.我们立足于"小小"型学校的特点,克服办学规模小带来的不利因素,因地制宜,科学管理,让这所... 相似文献
4.
为了提高自身素质,以适应教育改革和发展的需要,越来越多的教师参加了高等成人教育函授学习。怎样提高函授学习的质量和效率,成为广大函授学员的热门话题。我认为,函授学习要取得优异成绩,必须坚持三股劲,即挤劲、钻劲和拼劲。 挤劲,就是在学习上勤奋刻苦,合理安排工作与学习时间。函授学员大都集工作、学 相似文献
5.
Most reinforced concrete(RC)frame structures did not achieve the "strong column-weak beam" failure mode in recent big earthquakes, resulting in a large number of casualties and significant property loss. To deal with this serious problem, a new column-beam relative factor was proposed to characterize the relative yield situation of column ends and beam ends. By limiting the column-beam relative factor, RC frame structures could achieve the "strong column-weak beam" failure mode under the excitation of strong ground motions. The limit values of column-beam relative factor were calculated, analyzed and verified by using structural simulation models for corner columns in the bottom story of structures, which are destroyed most seriously in earthquakes. The results show that the limit values should be analyzed under bi-directional ground motion and with different axial compression ratios of columns. The peak ground acceleration(PGA)of ground motions has no significant effect on the limit values, while the type of strong ground motions has a significant effect on the limit values. 相似文献
6.
根据焊接工字钢梁主要用于承受弯矩的受力特点 ,钢梁腹板通常设计得高而薄 ,这样腹板在屈曲后还有很高的屈曲后强度可供利用 ,很多国家已把利用腹板屈曲后强度继续承载列入钢结构的设计标准或规范 ,但我国《钢结构设计规范》GB J17-88还无此方面的条文规定 .本文通过对焊接工字钢梁腹板屈曲后强度的理论分析和试验研究 ,得出一些对规范修订有重要参考价值的结论 相似文献
7.
成人的智能发展已经成熟并保持相对稳定,对成人学习起决定作用的是成人非智力因素的差异,其中成人人格对成人学习的影响举足轻重.研究成人人格发展规律,深入挖掘其教育思想,对促进成人学习,提升成人教学水平有一定意义. 相似文献
8.
9.
10.