摘要
大面积有粘结预应力混凝土框架结构应根据柱网尺寸采用不同的结构方案。按规范要求的Ⅱ级抗裂标准，普通钢筋仅需构造配筋，有时预应力度较高的结构反而开裂严重，故建议适当放宽抗裂控制等级。根据经济效果分析，框架梁中预应力筋连续跨数宜为３～４跨。
The design of concrete framed structure of prestressed concrete with bond should be based upon column network dimension adopted in the various structure plans.According to the requirement of class Ⅱ anti-crack standards,the common steel is adopted generally for prestressing and constructional steel.However the cracks of structure may be getting worse and more severe.Therefore,there are some apt suggestions to regain and increase the anti-crack control.Basing upon the results of economic efficiency analysis,the appropriate design of prestressed bars in concrete frame beam should involves 3 or 4 spans.
出处
《建筑技术》
北大核心
1998年第12期818-820,共3页
Architecture Technology
