摘要
通过PCCP的超载破坏试验,分析PCCP的外载承载能力和破坏形态。划分PCCP混凝土的受压区域和受拉区域,给出PCCP的破坏特征。将PCCP承受外载直至破坏分为四个阶段:1)弹性阶段;2)混凝土开裂阶段;3)钢丝屈服阶段;4)破坏阶段。通过试验得到的PCCP各个部分的应力应变曲线,分析PCCP各部位在相应阶段的受力状态,最后分析PCCP承受超载的破坏形态。
Load-carrying capacity and fracture deformation of prestressed concrete cylinder pipe（PCCP） are analyzed through overload damage tests of PCCP in this paper.Such a pipe is divided into a concrete pressure part and a tensile part,and their fracture behaviors and mechanism are examined.The full destruction process of the pipe is divided into four stages： elastic stage,concrete cracking stage,steel wires yield stage and failure stage.Experimental results of the tests are presented and a data analysis shows the stress-strain curve and the stress state of each pipe part.Finally,the fracture deformation under overload is analyzed.
出处
《水力发电学报》
EI
CSCD
北大核心
2012年第1期103-107,共5页
Journal of Hydroelectric Engineering
