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1.前言 钢筋混凝土圆形受弯构件是工程结构经常遇到的一种构件,如护坡桩,防止建筑物滑动的抵档桩,吊桥锚座的锚桩,这些桩都是圆形截面受弯,及受拉的构件,而计算这类圆形钢筋混凝土受弯的构件正截面承载力的计算方法,尽管有很多的实用、精确的计算[3][4],规范《GBJ10-89第4.1.19条列出沿周边均匀配置纵向钢筋的圆形截面砼构件偏心受压计算方法,及有关其它文献都是以沿周边配置钢筋为依据进行计算的,这样在定向受弯状态下,中和轴附近的钢筋应力发挥不起来。 笔者认为对截面尺寸大,受弯作用是定向的恒定的这类桩,次要因素不考虑进
1. Introduction Reinforced concrete circular bending members are a kind of components often encountered in the engineering structure, such as slope protection piles, anti-stake piles to prevent the building from sliding, and anchor piles of suspension bridge anchor seats. These piles are all circular sections bent. , And the components of the tension, and calculate the calculation method of the normal section bearing capacity of this kind of circular reinforced concrete bending member, although there are many practical, accurate calculations [3] [4], the specification "GBJ10-89 4.1 Clause 19.19 lists the method for calculating the eccentric compression of circular cross-section members uniformly distributed along the periphery with longitudinal reinforcement. The relevant literature is calculated based on the configuration of the reinforcement along the periphery, so that in the state of orientation bending, the neutralization Rebar stress near the shaft does not work. The author believes that for the large cross-section size, the bending effect is a directional, constant type of pile, and secondary factors are not considered.