【摘 要】
：
试验研究表明,纤维聚合物筋混凝土梁荷载挠度曲线以截面初裂为界限点分为两个线性阶段.正截面开裂前,荷载挠度曲线基本为线性,截面刚度较大;正截面开裂时,裂缝先在纯弯段出现
【机 构】
：
大连理工大学土木学院,郑州大学环境与水利工程学院
论文部分内容阅读
试验研究表明,纤维聚合物筋混凝土梁荷载挠度曲线以截面初裂为界限点分为两个线性阶段.正截面开裂前,荷载挠度曲线基本为线性,截面刚度较大;正截面开裂时,裂缝先在纯弯段出现,荷载挠度曲线出现转折点.随着荷载增加,纯弯段正裂缝发展,剪跨段斜裂缝产生并向梁的受压区加荷点扩展,梁的刚度较截面开裂前减少,荷载挠度曲线基本为线性直到梁破坏.在试验研究的基础上,探讨了纤维聚合物筋混凝土梁的非线性全过程数值分析方法,用计算机模拟了试验梁的跨中弯矩-挠度关系曲线,并用试验数据进行了验证.
其他文献
Human LAK cells were prepared by culturing normal human peripheral blood mononuclear cells (PBMC) with or without rIL-2 and assayed for T cell surface markers a
ＡＤＶＡＮＣＥＳＩＮＴＨＥＳＴＵＤＹＯＮＬＥＵＫＥＭＩＡＳＴＲＡＩＮＳＡＮＤＬＥＵＫＥＭＩＡＣＥＬＬＬＩＮＥＳＩＮＣＨＩＮＡＣｈｅｎｇＬｉ；程立；ＹｉｎＬｉａｎｈｕａ；殷莲华（ＤｅｐａｒｔｍｅｎｔｏｆＰａｔｈｏｐｈｙｓｉｏｌｏｇｙ，ＳｈａｎｇｈａｉＭ...
The patterns of acetylator phenotypes has been determined in 102 women with breast tumors, including 25 with benign breast disease and 77 with breast cancer, an
Alloimmunization was combined with lympho-kine activated killer (LAK) cells to assess its effect on mammary carcinoma in rats. The animals were injected with bo
研究ATM网中适宜ABR业务的流量控制方案的特点和问题，讨论ABR业务的参数，对RM信元进行分析并提出最近速率影响的改进方法，对基于速率和基于窗口方案的设计和应用给出分析和比较，
In a series of 130 cases of adenocarcinomas of the large intestine, enterochromaffin (EC) cells were detected in 54 cases (41.3%) by limmunocytochemistry with a
将列车-连续钢桁梁桥视为一个耦合的整体系统,采用桁段有限单元对连续钢桁梁桥进行离散,每节车辆采用具有21个自由度的二系弹簧车辆空间振动模型,列车与连续钢桁梁桥通过轮轨
The study of the relationship between trace element and health and disease has attracted more and more interests of scientists. As well known there exist comple
利用计算机编程绘制出内扩散对连续反应选择性的影响图.在低转化率下,中间产物B的收率与A的转化率呈线性关系;在高转化率下,中间产物B的收率有极大值.相同的Φ值下,k1/k2值越
建立了替米考星的高效液相分析方法 .在流动相为水 乙腈 四氢呋喃 磷酸丁胺缓冲液 (体积比为 80 5∶110∶6 0∶2 5 ) ,流速为 1 0mL/min ,色谱柱为ODS柱 (4 6mm× 2 0 0mm ,5