钢-压型钢板混凝土连续组合梁调幅系数的试验研究

Experimental Study on Moment Redistribution of Continuous Composite Steel-Concrete Beams with Profiled Sheeting

为了研究钢压型钢板混凝土连续组合梁的受力性能，对 3根两跨钢压型钢板混凝土组合梁进行了试验研究。试验结果表明，通过控制力比 R，压型钢板组合梁支座负弯矩区具有足够的塑性转动能力和延性，能够保证连续梁形成充分的塑性内力重分布。同时，根据现有的试验结果和理论分析，推导了连续组合梁负弯矩调幅限值的计算公式，计算结果与试验值符合良好。据此，对连续组合梁的负弯矩调幅系数提出了建议。

In order to study the plastic behavior of continuous composite beams with profiled sheeting, experiments have been conducted on three specimens of two span continuous composite beams with profiled sheeting. The test results show that the negative bending regions of continuous composite beams have sufficient plastic rotation ability and ductility to develop full moment redistribution by controlling the parameter of force ratio R. Based on the test results, theoretic method for calculating the ultimate amount of redistribution moments is developed. The proposed formulae for the moment redistribution ratio are valuable to the design of continuous composite beams.