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为得到木-混凝土组合梁弹性阶段弯曲变形的计算方法,基于钢-混凝土组合梁折减刚度法的研究思路,提出适用于木-混凝土组合梁挠度计算的修正折减刚度法,利用试验结果对此计算方法进行验证,并与钢-混凝土组合梁的折减刚度法进行对比。结果表明,相比钢-混凝土组合梁的折减刚度法,修正折减刚度法计算精度更高,能够较准确地反映木-混凝土组合梁的变形能力。当木-混凝土组合梁连接件单位长度刚度较大且跨度较大时,可以考虑采用折减刚度法近似计算木-混凝土组合梁挠度。
In order to obtain the calculation method of bending deformation of wood-concrete composite beams in the flexural stage, based on the research thought of steel-concrete composite beam reduction stiffness method, a modified reduction stiffness method is proposed to calculate the deflection of wood-concrete composite beams. This calculation method is validated and compared with that of steel-concrete composite beams. The results show that, compared with the steel-concrete composite beam, the calculated stiffness is higher, and the deformation capacity of the wood-concrete composite beam can be more accurately reflected. When the unit length of wood-concrete composite beam connection unit stiffness is bigger and the span is larger, the deflection of the wood-concrete composite beam can be approximated by using the method of reduction stiffness.