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本文就工程实践,按1983年11月南宁会议提供的《钢筋混凝土构件正截面强度汁算》一文以及1984年《建筑技术通讯——建筑结构》第3期发表的钢筋混凝土结构设计规范修订问题讨论中的有关条文,对63条三跨矩形连续梁作了正截面强度计算。并将数据与《钢筋混凝土结构设计规范(TJ10—74)》(以下简称“现行规范”)的计算数据作了相应的对比,从设计角度提出一点讨论意见本文举例选自工程实践中的现浇式梁板楼盖。为了获得较多的数据,确定梁的间距为3m:梁的跨度分别取3、4,5m:楼面活荷载分别取100、150、200、250、300、350、400 kgf/m~2:混凝土标号分别采用150、200、300号。这样可以获得189个截面的配筋数据,从而能较为全面的认识《钢筋混凝土结构设计规范(TJ10—85讨论稿)》(以下简称“修订规范”)的实用效果。本文计算工作系利用 PC—1500袖珍计算机。所编制的程序实用于“现行规范”与“修订规范”的受弯构件正截面强度计算。该程序亦于本文一并介绍。
This article discusses the revision of the reinforced concrete structural design specification published in the “Structure Calculation of Reinforced Concrete Components Strength” provided by the Nanning Conference in November 1983 and the 1984 “Building Technology Communication-Building Structure” No. 3 issue on engineering practice. In the relevant articles, the normal section strength of 63 three-span rectangular continuous beams was calculated. Comparing the data with the calculation data of the “Reinforcing Design Specification for Reinforced Concrete Structures (TJ 10-74)” (hereinafter referred to as the “Current Regulation”), and putting forward some discussion opinions from the perspective of design. Beam plate floor cover. In order to obtain more data, determine the beam spacing is 3m: beam spans take 3, 4, 5m respectively: floor live load take 100,150,200,250,300,350,400 kgf/m~2: Concrete signs are numbered 150, 200, and 300 respectively. In this way, 189 cross-sections of reinforcement data can be obtained, which can provide a more comprehensive understanding of the practical results of the “Reinforced Concrete Structure Design Specification (TJ10-85 Discussion Paper)” (hereinafter referred to as “the revised specification”). The calculation work in this paper uses a PC-1500 pocket computer. The prepared program is applied to the calculation of the normal section strength of the flexural members of the “current specification” and “revised specification”. This procedure is also described in this article.