论文部分内容阅读
对RPC材料的局部抗压性能进行研究。通过对39块RPC试块的局部抗压试验,确定RPC材料延性破坏的局压面积比应控制在Ab/Al<10;得出RPC的局部抗压开裂及极限强度提高系数分别为cβr=0.57016(Ab/Al)0.67135,β=0.9(Ab/Al)1/2。对有预应力孔道的RPC试块的局部抗压强度进行研究,并与预应力钢筋的预拉应力进行比较,最终确定RPC预应力结构锚下无需间接配筋。
The local compressive properties of RPC materials were studied. Through the local compressive tests of 39 RPC test blocks, the area ratio of the partial pressure of the ductile damage of the RPC material should be controlled at Ab / Al <10; the coefficient of increase of local compressive cracking and ultimate strength of RPC is cβr = 0.57016 (Ab / Al) 0.67135, β = 0.9 (Ab / Al) 1/2. The local compressive strength of RPC specimens with prestressed tunnels was studied and compared with the prestressing stress of prestressing steel bars. Finally, no indirect reinforcement under RPC prestressed structure anchors was determined.