预应力混凝土连续箱梁桥静、动荷载试验研究

Research on the Static and Dynamic Load Tests for Prestressed Concrete Continuous Box Girder Bridge

研究目的:通过对连续箱梁桥控制截面和典型位置的应力和变形观测,得到桥梁实际应力分布和变形情况,通过测试桥梁的实际受力情况,可以评估和鉴定桥梁的实际承载能力,为工程竣工验收提供实测依据。研究结论:通过对预应力混凝土连续箱梁桥的静动荷载试验,得到了桥结构的实际应力、变形及频率等参数。试验结果表明,对该桥的理论分析和设计计算方法可行,能控制和保证施工质量,使桥梁刚度和承载能力满足设计和规范要求。

Research purposes： Based on the observing the stress and deformation in the control section and typical position of continuous box girder bridge under different static loads, the actual stress distribution and deformation of the bridge are obtained and based on the testing the actual stress of the bridge, the actual load - bearing capacity of the bridge can be assessed and determined for providing measured data for the acceptance check of completion works. Research conclusions： Through the static and dynamic load tests, the parameters about stress, deformation and frequency of the bridge are obtained. The tests results show the theoretical analysis and calculation method uses for the bridge are feasible, and with which the construction quality can be guaranteed and the rigidity and load bearing capacity of the bridge can meet the requirements of the design and relative standards.