泰州长江公路大桥南锚基础沉降计算研究

泰州长江公路大桥为三塔两跨悬索桥,两岸锚碇采用沉井基础。采用工程类比法和有限元法,分别在设计和施工阶段预测该桥南锚基础的沉降值。工程类比法以已经建成的江阴长江大桥北锚为原型,基于弹性理论类比出待建的泰州长江公路大桥南锚的沉降量,施工期沉降观测值表明,实际沉降值约为类比值的60%,类比值仅能供初步设计参考。有限元法则根据锚碇浇注过程中的实测沉降反演出力学参数,然后预测施工后期即架缆和桥面铺装阶段锚拉点的位移,计算结果表明,运用反演后的参数可以较准确地描述不同施工阶段沉井的变形特征,并指导后期施工。

Calculation and Research of Settlement of South Anchorage Foundation of Taizhou Changjiang River Highway Bridge

Taizhou Changjiang River Highway Bridge is a three tower suspension bridge and the anchorages of the Bridge on both banks rest on caisson foundations.The engineering analogy method and finite element method are used to respectively predict the settlement value of the south anchorage foundation at the design and construction stages.In the engineering analogy method,the north anchorage of the completed Jiangyin Changjiang River Bridge is taken as the prototype and on the basis of the elasticity theory,the set...