论文部分内容阅读
五河口斜拉桥主桥和索塔高性能混凝土徐变试验研究,给出了三个配比混凝土的瞬时弹性模量、徐变度、收缩变形和线膨胀系数,依据测试结果提出混凝土的弹性模量、徐变度和徐变系数计算公式。分析认为,混凝土的早期强度和弹性模量相对较高,徐变系数较低,对减少预应力损失和构造物后期变形、加快工程进程都是有利的;测试结果合理可信,计算公式拟合精度高,报告提供的测值及公式可作应用参考。
Wuhekou cable-stayed bridge and tower pylon high-performance concrete creep test study, given the three proportion of concrete instantaneous modulus of elasticity, creep, shrinkage and linear expansion coefficient, the test results based on the proposed elasticity of concrete Modulus, creep and creep coefficient calculation formula. The analysis shows that the early strength and elastic modulus of concrete are relatively high, and the creep coefficient is low, which is beneficial to reduce the loss of prestress and post-construction deformation and speed up the engineering process. The test results are reasonable and credible, High precision, the report provides measurements and formulas can be used as a reference.