混凝土适筋梁研究及应用  

作　　者：常国力 

机构地区：[1]云南交投集团云岭建设有限公司,昆明650041

出　　处：《科技创新与应用》2023年第17期166-169,共4页Technology Innovation and Application

摘　　要：非抗震条件下钢筋混凝土梁是工程中最基本的构件,其计算和设计已非常成熟。但普通技术人员对其相应规范的理解还有一定的难度。特别是规范中给出的限制条件为最终值,未表述其推导过程或说明。规范中适筋梁的表述采用受压区高度和最小配筋不同的方式来限定,理解较为困难且配筋率计算中采用的梁截面并不一致,为详尽解释其基本原理,通过理论推导的方法得出用最大最小配筋率表征适筋梁的配筋范围。同时解释其配筋率计算内涵差异,充分考虑材料强度一致性及钢筋超强等特点对其配筋率范围做出调整,提出按照组合梁设计原理充分考虑适筋梁配筋范围,采用上部浇筑混凝土达到加固梁的效果。Reinforced concrete beam under non seismic conditions is the most basic component in engineering,and its calculation and design have been very mature.However,it is still difficult for ordinary technicians to understand the corresponding specifications.In particular,the limiting condition given in the specification is the final value,and its derivation process or description is not stated.The expression of the reinforced beam in the specification is limited by different ways of the height of the compression zone and the minimum reinforcement,which is difficult to understand and the beam section used in the calculation of reinforcement ratio is not consistent.In order to explain its basic principle in detail,through the method of theoretical derivation,it is concluded that the reinforcement range of suitable reinforcement beam is characterized by the maximum and minimum reinforcement ratio.At the same time,the connotation difference of reinforcement ratio calculation is explained,the range of reinforcement ratio can be adjusted by fully considering the consistency of material strength and super strength of steel bar,and it is proposed that the reinforcement range of suitable reinforcement beam should be fully considered according to the design principle of composite beam and the upper pouring concrete is used to strengthen the beam.

关 键 词：钢筋混凝土梁 适筋梁 配筋率 受压区高度 组合梁 

分 类 号：TU375[建筑科学—结构工程]