张大长  吕志涛
    （东南大学 南京 210096）

[提要]  对用预应力框架柱中所配的纵筋和箍筋代替锚固区钢筋网片的局部承压进行了12个试件的试验研究。试验结果表明，用柱中已配的纵筋和箍筋代替钢筋网片进行局部承压是安全可靠且可行的，并且方便施工、提高效率。同时，对破坏形态和破坏机理进行了理论分析，提出相应的简化计算公式和设计建议。
[关键词]  预应力框架 柱 纵筋 箍筋 网片 局部承压

The partially pressed tests of 12 RC members using longitudinal-steel and hoop-steel instead of reinforcing mat in anchoring area are made. The test result shows that it is feasible and on the safe side. What's more, it is greatly convenient for construction. At the same time, the failure pattern and mechanism are analysed. Besides the simplifying formulas and design suggestion are proposed.
Keywords: prestressed concrete frame; column; longitudinal steel; hoop steel; mat; partially pressed