任意截面钢筋混凝土构件配筋计算方法

钢筋混凝土构件在工程结构中广泛应用,复杂异形截面多向受力状态下,弯矩作用平面与弯曲平面不重合,截面的强度与配筋计算极为复杂,没有较好的解决方案。本文以平截面假定为依据,基于容许应力法推导出了任意截面钢筋混凝土构件的配筋验算公式,将复杂截面的配筋计算问题转化为复杂截面几何特性的求解,利用格林积分变换公式精确高效地实现了任意截面的特性求解,解决了任意截面钢筋混凝土构件单向以及多向受力状态下配筋验算问题,并编制了相应的任意截面钢筋混凝土构件的配筋验算程序。通过大量对比验算表明,本文的计算方法和程序计算结果精确可靠,计算效率高。

Reinforcement Calculation Method for Bar Arrangement on Arbitrary Reinforced Concrete Cross-section

Reinforced concrete structure is ubiquitous in civil engineering projects.The plane with bending moment are distinct from the plane of bending in an RC part with complex sections under multi-directional stress,which results in a complicated calculation method for the cross-section strength and reinforcement arrangement.According to plane cross-section assumption and allowable stress method,this paper provides derivation of reinforcement calculation method for arbitrary cross-section,converts reinforcement calculation to geometrical properties derivation of cross-section with accuracy and efficiency by applying Green Integral Transformation Formula,which solves reinforcement calculation problem of arbitrary cross-section under single and multiple-directional stresses and provides calculation program.The accuracy and efficiency of calculation method and program are proved by multiple comparison calculation.