| 钢-混凝土组合梁抗裂性能的试验研究 |
| |
| 引用本文： | 樊健生,聂建国,张彦玲.钢-混凝土组合梁抗裂性能的试验研究[J].土木工程学报,2011(2):1-7. |
| |
| 作者姓名： | 樊健生 聂建国 张彦玲 |
| |
| 作者单位： | 清华大学;石家庄铁道大学; |
| |
| 基金项目： | 国家自然科学基金(50408001); 河北省自然科学基金(E2009000893); 河北省教育厅基金(927017) |
| |
| 摘 要： | 为研究钢-混凝土连续组合梁的受力性能,特别是体外预应力对抗裂性能和刚度的影响,完成3根反向加载的简支组合梁和3根2跨连续组合梁的静力加载试验,其中包括2根在钢梁和混凝土板内折线布筋的体外预应力组合梁。试验表明:非预应力组合梁在负弯矩作用下的开裂荷载较低,连续梁在较低荷载下就会由于混凝土开裂而发生明显的内力重分布,且横向钢筋间距对裂缝间距具有一定影响;折线布筋的体外预应力组合梁开裂荷载增大,裂缝间距和裂缝宽度明显减小,且相同荷载下的挠度下降,说明体外预应力可有效改善组合梁的综合受力性能。此外,预应力作用对组合梁的滑移分布有较明显影响。
|
| 关 键 词： | 钢-混凝土组合梁 模型试验 负弯矩区 体外预应力 裂缝 滑移 |
Experimental study of crack resistance of steel-concrete composite beams |
| |
| Fan Jiansheng Nie Jianguo Zhang Yanling.Experimental study of crack resistance of steel-concrete composite beams[J].China Civil Engineering Journal,2011(2):1-7. |
| |
| Authors: | Fan Jiansheng Nie Jianguo Zhang Yanling |
| |
| Affiliation: | Fan Jiansheng1 Nie Jianguo1 Zhang Yanling2(1.Tsinghua University,Beijing 10008,China,2.Shijiazhuang Tiedao University,Shijiazhuang 050043,China) |
| |
| Abstract: | In order to study the mechanical behaviors of continuous steel-concrete composite beams,especially for the influence of external prestress on the crack resistance and stiffness,static model tests are conducted for three simply supported steel-concrete composite beams under negative moment and three continuous two-span composite beams under point loads,with the model beams including two externally prestressed composite beams with the tendons laid in fold.The results show that the cracking load of the composi... |
| |
| Keywords: | steel-concrete composite beam model test negative moment region external prestress crack slip |
| 本文献已被 CNKI 等数据库收录！ |
