锚碇沉井变位分析与预测

ANALYSIS AND PREDICTION OF ANCHORED CAISSON FOUNDATION DISPLACEMENT BASED ON MONITORING DATA

为了预测温州瓯江北口大桥南锚碇沉井基础及其上部结构的变位,通过监测数据分析温州瓯江北口大桥锚碇沉井基础下沉到位后的沉降发展规律,通过数值分析得到基础后续变位结果.分析结果表明,针对基础长期变位的数值计算结果相对可靠,针对基础单工况进行计算分析,若加载速率过大或过小,数值计算结果误差较大;合理铺排施工工序可以有效减小基础变位对上部结构的影响.

The monitoring data are used to analyze the settlement development law of the anchor caisson foundation of Wenzhou Oujiang North Portal Bridge after sinking in place,and the subsequent displacement results of the foun-dation are obtained through numerical analysis.The results show that the numerical calculation for the long-term displacement of the foundation are relatively reliable.The error of the numerical calculation results will be large if the loading rate is too large or too small.Reasonable paving construction process can effectively reduce the impact of foundation displacement on the superstructure.