京杭运河特大桥高性能混凝土徐变试验研究  

Experimental Study on the Creep Property of High Performance Concrete for the Grand Canal Bridge

作　　者：王永安[1] 刘世同[1] 陈灿明[2] 黄卫兰[2] 

机构地区：[1]江苏省高速公路建设指挥部,江苏南京210004 [2]南京水利科学研究院,江苏南京210024

出　　处：《现代交通技术》2006年第4期19-21,共3页Modern Transportation Technology

摘　　要：本文结合宿淮高速公路京杭运河特大桥主桥高性能混凝土徐变试验,提出弹性模量和徐变度的计算公式,采用该公式的计算结果与测试结果符合较好。通过分析认为,该混凝土早期强度和弹性模量较高、徐变系数较低,对减小预应力损失和后期变形。Combined with the creep experiment of HPC for the Grand Canal bridge at the Suhuai Expressway the calculation formulas for elastic modulus and creep degree are introduced.The result calculted by the formulas is idential with the tests result.lt is approved that the higher of strength and elastic modulus of HPC, the lower of the creep coefficient, it is helpful for decreasing prestress loss and long term deformation.

关 键 词：高性能混凝土 徐变 试验 

分 类 号：U444.18[建筑科学—桥梁与隧道工程]