目前,公路建设事业迅速发展,而公路桥梁采用钻孔灌注桩做下部结构的日益增多,所以对有关盖梁中钢筋长度的细节问题,应引起足够的重视。以前,盖梁悬臂端负弯矩钢筋斜长的计算没有完整的、可行的公式,所以在盖梁设计中,该长度的计算所采用的方法都不令人十分满意。用图解法废时且精度不高,有时误差达几厘米之多;用原点移动法计算,由于其坐标原点是随悬臂端负弯矩钢筋弯起位置的不同而异,事实证明这 At present, the rapid development of highway construction, and the use of bored piles of highway bridges to do more with the lower structure, so the details of the length of the steel bars in the beam should be paid enough attention. In the past, there was no complete and feasible formula for the calculation of the inclined length of cantilevered negative end moment reinforcement beams. Therefore, the method for calculating this length in the design of the cover beam is not very satisfactory. With the graphical method of waste time and the accuracy is not high, and sometimes the error of up to several centimeters; calculated by the origin method, the origin of the coordinates with the cantilever end bending moment of negative reinforcement position varies, it turns out that this