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水泥土添加剂室内配比试验的模糊正交分析 被引量:8
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作者 李志斌 叶观宝 徐超 《水文地质工程地质》 CAS CSCD 北大核心 2005年第4期117-119,共3页
利用模糊正交试验,对水泥土添加剂室内配比试验结果进行分析。以无侧限抗压强度和试样成本为考核指标,得出水泥土试样在2 8d和90d时水泥掺入比、添加剂掺入比和水灰比的最佳组合,为实际工程提供有价值的参考。
关键词 模糊正交分析 水泥土添加剂 无侧限抗压强度 试样成本
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Joint member angle limits of composite beams and CFT square columns 被引量:2
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作者 LEE Seung-Jo LEE Kang-Guk 《Journal of Central South University》 SCIE EI CAS 2013年第1期199-206,共8页
This work aims to understand the relationship between the member angle limit and the energy ratio for 24 test samples of composite beams and CFT square steel tube columns. This work also compares the formula applicabi... This work aims to understand the relationship between the member angle limit and the energy ratio for 24 test samples of composite beams and CFT square steel tube columns. This work also compares the formula applicability for member angle limit with the previous test result to provide the basic data for the design of composite beam-CFT column. The evaluation of the member angle limit was performed with concrete compressive strength (fC =22.16 MPa, 30.49 MPa), breadth-to-thickness ratio (B/t=25.0, 33.3, 43.5), and axial capacity ratio (N/N0=0, 0.3, 0.4, 0.5) as the main variables of the test samples. For the relationship between the member angle limit (Ru) and the energy ratio (ES/EC ), the test result shows that the energy ratio becomes lower as the axial capacity ratio and the breadth-to-thickness ratio increase. The energy ratio is lower for the Type B test sample compared with that of Types A and C. For the formula suggested by SATO, the test samples are distributed evenly for comparison between test values and the member angle limit; however, other formulas indicate a deviation. Specifically, for the comparison between R u,cal and R u (Test), Maeda's formula shows severe deviation. 展开更多
关键词 square steel tube axial capacity ratio member angle limit breadth-to-thickness ratio
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