摘要
在两座后张法PC连续梁桥拆除过程中,现场调查得到了该两座桥的预应力孔道压浆情况和预应力钢绞线试样。经过一系列试验,得到了钢绞线的腐蚀情况,以及弹性模量和极限强度等力学指标。分析这些经过约10年使用的钢绞线的力学性能变化情况,为研究和评估类似预应力混凝土结构的耐久性和承载能力提供了可靠依据。
During the removing of two post-tensioning PC continuous bridges, their duct grouting is investigated and some prestressed strands are collected. After a series of tests, strands corrosion, elastic modulus and ultimate tensile strength are obtained. The analysis of mechanical properties change of these cables, which have been in use for almost 10 years, can provide us a good reference of evaluating the durability and ultimate bearing capacity of similar PC bridges.
出处
《施工技术》
CAS
北大核心
2007年第2期63-66,共4页
Construction Technology
