在试验基础上推导出连续组合梁负弯矩区极限抵抗矩的计算公式．以跨中受集中荷载作用的连续组合梁为例，介绍其极限荷载的求法．提出连续组合梁调幅系数的确定方法． On the basis of the experiment, the formula for the ultimate moment of resistance in the negative bending moment region of continuous composite beams was deduced. Taking the continuous composite beam subjected to concentrated loading in mid-span as an example, the method of determining the ultimate load is introduced. A method for determining the amplitude adjustment coefficient of continuous composite beams is proposed.