Analysis of Local Stress and Improvement of Stress State on Key Parts of the Polyline Pretensioned Beam
To research the local stress state of the polyline pretensioned beams, the 3-D nonlinear finite element model is established by FEA software ANASYS. The results show that the existence of the inflection point on the prestressed reinforcement is the main reason of local stress distribution, and the corner radius R is the primary influential factor of the local stress distribution phenomenon. Then, the variation law of the stress and stress distribution by the corner radius R is illustrated clearly. With the increasing of R, the maximum local stress has decreased, and the stress distribution curve has increasingly become smoothly and gently. Considered the variation law of local stress and various of construction requirement in engineering practice, R= 600mm is selected as the optimal radius. This research lays a good foundation for the further researches and wide applications of the polyline pretensioned beams.
prestressed concrete stress analysis finite element analysis improvement of stress state optimization of corner radius R the polyline pretensioned beams (PPSCB).
Wenxiong Huang Liying Tan
School of Urban Construction Yangtze University Jingzhou, China School of Civil Engineering & Mechan Jingzhou City Planning & Design Institute Jingzhou, China
国际会议
三峡
英文
536-539
2012-05-18（万方平台首次上网日期，不代表论文的发表时间）