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原有标准图限于计算手段,一般将中小跨径桥梁的空间问题转化为平面杆系来计算,因而不能很好地体现T形梁桥横隔板的作用和弯、斜桥的受力特征,只有依靠偏保守的构造措施来确保结构的安全性,其合理性很难确定。通过对T形梁桥空间杆系和平面杆系分析比较,从量值上确定相互关系,找出两种计算结果存在的内力、应力差异、斜梁桥的受力特性及配束规律,使本次通用图编制中对预应力钢束和构造钢筋的配置更为合理。
The original standard diagram is limited to calculation means, and the space problem of small-medium-sized bridges is usually converted into plane rod system to calculate, which can not well reflect the role of T-beam bridge diaphragm and the bending and inclined bridge force characteristics, Only by relying on conservative structural measures to ensure structural safety, its rationality is difficult to determine. Through the analysis and comparison of the space bar system and the plane bar system of the T-shaped girder bridge, the correlations are determined from the magnitudes and the internal forces and stress differences of the two kinds of calculation results are found. The preparation of this general drawing of prestressed steel beams and structural steel configuration more reasonable.