ANALYSIS OF LATERAL RESTRICTION ON BEAM'S CARRYING CAPACITY OF FRAME STRUCTURE STRENGTHENED WITH EXTERNAL PRESTRESS TENDON
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摘要: 分析了用体外预应力方法加固框架梁时梁的受力状态,指出由于端部侧向约束构件的影响,将使加固效果受到影响。运用结构力学的D值方法,近似把结构看作弹性体,分析了框架梁实际的预压力计算方法,并进一步分析了加固后梁的承载能力计算方法,推导出了相应的计算公式。Abstract: The state of section of frame beam strengthened with external prestress tendon is analyzed and pointed out that?the effect will be reduced because of the lateral restriction.With the theory of D-value, to consider the structure as anelastomer, computing method of the press force on beams section is addressed.Finally, the carrying capacity of frame beam?strengthened with prestress tendon is further analyzed, and relevant formula is deduced.
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Key words:
- externally prestressing /
- strengthen frame structure /
- concrete structure /
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[2] 包世华, 方鄂华.高层建筑结构设计.北京:清华大学出版社, 1990.101~119 曹双寅, 邱洪兴, 王恒华.结构可靠性鉴定与加固技术.北京:中国水利电力出版社, 19991206;
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