不同植筋深度混凝土梁的静力试验研究  

Static Tests on Different Planted Depth of Concrete Beams

作　　者：阎西康[1] 丛林 张玉淙 孔德霞[1] 魏兴磊 陶建伟[1] 

机构地区：[1]河北工业大学土木工程学院,天津300401 [2]中国铁塔股份有限公司保定市分公司,河北保定071051 [3]天津市华水自来水建设有限公司,天津300122

出　　处：《建筑科学》2016年第11期106-109,共4页Building Science

摘　　要：为了研究不同植筋深度的钢筋混凝土梁受拉区的受力性能,采用植筋技术设计制作了3根钢筋混凝土植筋梁,植筋深度分别为15d,20d,25d(d为所植钢筋直径),并对其进行静载试验。静力试验结果表明:植筋梁的极限荷载随着植筋深度的增大而增大。在相同荷载作用下,植筋的应力随着测点到植筋端头距离的增大而增大,说明植筋端头所承担的应力较小,离端头的距离越大,钢筋所承担的应力越大。为充分发挥钢筋的强度,植筋深度应达到25d以上。In order to study the mechanical properties of the reinforced concrete beams with dlllerent planteO oepm of the tensile zone, using reinforcement planting technology to design and manufacture the 3 root reinforced concrete beams with bonded rebar, the depths of embedded steel bars are 15d, 20d, 25d （d for the planting of the bar diameter） , and doing static load tests on them. Static test result shows that： the ultimate load of anchorage beam increases with the increase of planting depth. Under the same loads, the anchorage stress increases with the increase of the measured point to the anchorage end distance. This shows that planting end bears less stress, the greater the distance from the end, the greater stress reinforced bears. In order to have the full strength of the reinforcing bar, the anchorage depth should be above 25d.

关 键 词：植筋 钢筋混凝土梁 植筋深度 极限承载力 

分 类 号：TU375.1[建筑科学—结构工程] TU312.1