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EXPERIMENT AND CALCULATION OF NORMAL SECTION BENDING CAPACITY OF PRESTRESSED STEEL REINFORCED CONCRETE FRAME BEAMS
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摘要: 在两榀预应力型钢混凝土框架竖向静力试验的基础上，提出两种考虑侧向约束影响的预应力型钢混凝土框架梁正截面受弯承载力的计算方法：基于塑性理论下限定理的改进一般叠加法和基于《混凝土结构设计规范》基本假定的正截面承载力计算方法。两种方法计算结果与试验误差基本在10%以内，吻合较好，说明所建议方法的理论依据是可靠的，可用于工程设计，为《预应力混凝土设计规范》的编制提供参考。Abstract: Based on the vertical static test of two prestressed steel reinforced concrete frames, two bending capacity calculated methods are put forward, which consider the impact of lateral restraint on prestressed steel reinforced concrete frame beams.One is the improved general superposition method based on the lower limit theorem of plastic theory calculated results and the other is the method based on the basic assumptions of Code for Design of Concrete Structure.The error between the calculated results by the two methods and those of the test is less than 10%, whose degree of agreement is good, the methods can be used in engineering design and have a certain value of reference for the compilation of Prestressed Concrete Design Code.
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Key words:
- prestressed steel reinforced concrete /
- frame beam /
- lateral restraint /
- bending capacity
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