摘要
超长混凝土结构施加预应力时,侧向刚度会约束梁、板构件的轴向变形,从而影响预应力在水平构件中的传递,导致轴向预应力的损失。本文分析了侧向约束对超长结构预应力施加效果的影响,并在理论分析和工程实测数据的基础上,提出了减小次内力的措施。
The lateral stiffness will restrain the axial displacement of beam or flat when prestress applying on the super long structure. It affects the transferring of the force in the horizontal members, and leads to the lose of axial prestress. The article analyzes the influence of lateral restrains in super long prestressed concrete structure. Based on the theoretical analysis and the data from real engineering, this article presents the methods of reducing secondary internal force in super long structure.
出处
《福建建设科技》
2007年第2期23-25,共3页
Fujian Construction Science & Technology
关键词
预应力
超长结构
侧向约束
次内力
pre -stressed
super long concrete structure
lateral restrains
secondary internal force
