钢-混凝土双面组合连续梁裂缝试验研究

Experimental Study on the Cracking of Double Steel-concrete Composite Continuous Beam

在3片试验梁模型试验的基础上,对钢-混凝土双面组合梁负弯矩区的裂缝问题进行了研究,给出了裂缝最大宽度计算公式,并将试验实测值与理论计算值进行了对比,结果表明二者吻合良好。同时,计算了模型梁的开裂弯矩,并提出了有效控制钢-混凝土双面组合梁裂缝的措施及今后的研究重点建议。

On the basis of model test of three beams models, the crack problem of negative moment area is studied. The maximum crack width calculation formula is given and the test results are compared with the calculation results, these two kind of results are in good agreement. At the same time, the crack bending moment is calculated and effective crack controlling methods of double steel-concrete composite beam are given.