为避免工程建设的重复性,节省工程造价,芜湖市袁泽桥改建中将利用大量的旧桥桩基。为了给工程设计和施工提供依据,开展了桩身耐久性、材性、低应变、静载试验等一系列试验工作,并进行墩下多桩基础的数值模拟分析,明确了旧桥桩基的承载性能,以及旧桩与新桩的协同工作性能。 In order to avoid the repetitive construction and save the construction cost, the reconstruction of Yuanze Bridge in Wuhu City will make use of a large number of old bridge piles. In order to provide the basis for engineering design and construction, a series of experimental work such as pile durability, material property, low strain and static load test were carried out. The numerical simulation analysis of multi-pile foundations under piers was carried out. Bearing capacity, as well as the old pile and the new pile of collaborative performance.