预应力混凝土空心原型大板抗扭刚度试验及其分析

TORSIONAL STIFFNESS TEST OF FULL—SCALE PRESTRESSED CONCRETE HOLLOW SLABS AND ITS ANALYSIS

本文通过预应力混凝土空心原型大板抗扭刚度试验,研究空心板在弹性范围内受纯扭作用下的抗扭刚度。试验表明,抗扭刚度的理论计算值与实测值较为一致,建议在弹性范围内受纯扭作用时的空心板,可直接按理论公式计算抗扭惯矩。

In this paper based on full-scale tesis of prestressed concrete hollow slabs in single torsion,torsional stiffness of hollow slabs is investigated in the range of elasticity.Tests indicated that torsional stiffness values of the theory are conformable with the values of test,it is recommended the moment of inertia in single torsion can be computed by the formula of theory in the range of elasticity of hollow slabs.