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桥梁是公路工程的重要结构工程,是公路建设项目不可缺少的组成部分,为了保证公路的质量与经济、安全、功能性指标,在曲线上往往布设桥梁。由于公路路面有一定的宽度,受内侧与外侧曲线半径长度变化的影响,当桥墩台帽沿曲线法线方向布设且宽度等宽时,预制安装的直线梁在弦线方向的长度由内向外逐步增加,使每一片T梁的预制长度需要根据位置计算确定,并调整配筋数量、模板长度等,不利于实行工厂化预制生产。
Bridge is an important structural engineering of highway engineering and an indispensable part of highway construction project. In order to ensure the quality of highway and economic, safety and functional indexes, bridges are often laid on the curve. Due to the width of highway pavement, the length of the prefabricated straight beam in the chord direction is gradually changed from the inside to the outside when the abutment cap is laid along the normal direction of the curve and has the same width due to the variation of the radius of the inside and outside curves. Increase, so that each piece of T beam prefabricated length needs to be determined according to the location calculation, and adjust the number of reinforcement, the length of the template, is not conducive to the implementation of factory prefabricated production.