论文部分内容阅读
到目前为止,世界许多国家的学者对桥梁振动控制和超载控制作了不少研究,提出了诸如TMD、MTMD等控制措施,这些研究对超载效应考虑不多。考虑从桥墩、桥台做液压伺服系统的斜向支撑,在离桥一定距离做称重系统和荷载传感系统,当有超重车载时,中央控制系统就发令液压伺服系统将需要的力施加到连续梁底,从而减少梁的内力和挠度。理论分析证明:该方法对连续梁具有显著的超载运营作用,且对三跨连续梁桥,只须从桥墩做斜撑,而对于两跨、四跨、五跨连续梁桥,从桥台做斜撑是有利的。
So far, scholars from many countries in the world have done a lot of research on bridge vibration control and overloading control, and have put forward control measures such as TMD and MTMD. These researches have little consideration on overloading effect. Consider from the piers, abutment hydraulic servo system to do the oblique support at a distance from the bridge to do the weighing system and load sensing system, when there is overweight car, the central control system will issue a hydraulic servo system will apply the required force to Continuous beam bottom, thereby reducing the beam’s internal force and deflection. The theoretical analysis proves that this method has a significant overloading operation effect on continuous beams. For the three-span continuous beam bridge, only the bracing must be done from the piers. For two-span, four-span and five-span continuous girder bridges, Bracing is advantageous.