侯西铁路线K81+061立交桥梁体后张法预应力筋伸长值偏差探讨与计算机辅助计算

Discussion on the Deviation of Elongation of Post-tensioned Prestressed Steel of K81+061 Overpass Bridge Body of Houma-Xi'an Railway Line and Computer Aided Calculation

结合工程实例,从施工材料和施工技术、混凝土弹性模量增长滞后、设计伸长值等方面,对后张法预应力筋伸长值超限问题进行了系统的论述,最终采用理论计算的手段解决了该问题,并针对理论计算的难度及特点提出了计算机高级语言辅助计算的解决方法与思路。

Based on the project case,and from aspects of the construction materials and construction technologies,the lagging growth of elastic modulus of concrete,and design elongation,etc.,this paper makes the systematic discussion on the transfinite elongation of post-tensioned prestressed steel,and solves this problem by using theoretical calculation finally,and in the light of some difficulties and features of the theoretical calculation,puts forward the solution of adopting high-level computer language aided calculation.