普通箍筋长度计算的推导  

Derivation of length calculation of ordinary stirrup

作　　者：熊伟[1] 李海凌[2] 

机构地区：[1]西华大学土木建筑与环境工程学院,四川成都610039 [2]西华大学造价研究所,四川成都610039

出　　处：《工程造价管理》2017年第6期38-42,共5页Engineering Cost Management

摘　　要：关于钢筋混凝土构件中箍筋长度的计算方法及计算公式的采用,在实际工程中无论是造价计量还是施工下料长度的计算,各方都存在一定的计算差异。本文以工程中最常见的普通双肢箍末端为2个135度弯钩的箍筋为例,详细进行了计算条件、计算方法、及计算公式的分析。在定义了保护层厚度的规定、弯心直径、内包尺寸、中心线尺寸、外包尺寸、弯钩长度、量度差、抗震与非抗震等计算条件的基础上,推导了普通箍筋按中心线长度的计算公式。这对工程专业人员在实际工程中对普通箍筋长度的计算以及其它多肢箍、复合箍等长度的计算都有所帮助,并对实际工程中工程造价计量和施工下料都具有一定的指导作用。There are some differences between the calculation method and the calculation formula about length of stirrups in rein- forced concrete members, whether it is cost measurement or construction material length calculation in actual engineering. In this paper, the calculation condition, calculation method and calculation formula are analyzed in detail with the stirrup of 2 135 degree bendng hook, which is the most common stirrups double end hoop in engineering. On the basis of the definition of the thickness of the protective layer, the diameter of the bent core, the size of the inner package, the size of the central line, the size of the outsourcing, the length of the hook, the difference of measurement, the seismic and non seismic conditions, the formulas for calculating the length of common stirrups according to the central line length are derived. The calculation method of the length of common stirrups is helpful for engineering professionals to calculate the length of other multi limb stirrups and compound stirrups. And the calculation method has certain guiding function to engineering cost measurement and construction blanking in actual engineering.

关 键 词：普通箍筋 弯心 理论长度 工程造价计量 

分 类 号：TU723.3[建筑科学—建筑技术科学]