泥炭质土地基上人行木栈桥沉降监测及模拟  

Settlement Monitoring and Modelling of a Wooden Pathon on Peat Soil

作　　者：赵朝发[1] 杨仲轩[1] 张珏[2] 林锦涛[2] 

机构地区：[1]浙江大学建工学院土木系,浙江杭州310058 [2]杭州市园林文物局钱江管理处,浙江杭州310008

出　　处：《公路工程》2014年第6期86-90,共5页Highway Engineering

基　　金：国家自然科学基金项目(51178421;51322809)

摘　　要：对杭州江洋畈生态公园泥炭质土地基上人行木栈桥沉降及泥炭质土地表沉降进行监测,结果表明木栈桥的沉降主要来自泥炭质土的固结沉降。为深刻认识木栈桥的沉降特性及发展趋势,保证其使用安全,对泥炭质土沉降开展了数值模拟。采用PLAXIS并选用剑桥模型进行分析,并选取实测点的沉降监测结果进行对比,模拟结果表明监测结果吻合较好。对泥炭质土的长期沉降趋势进行预测,表明江洋畈生态公园泥炭质土沉降将会趋于稳定。This paper presents a field monitoring of settlements of a pedestrian bridge that was built on peat soil in Jiangyangfan Eco-park, Hangzhou. The results show that the main reason of settle- ment of pedestrian bridge is due to the consolidation of peat soil. The modified Cam-clay model is adopted and numerical analyses by PLAXIS are conducted to simulate the settlement and its long-term trend. As a result, the numerical result fits very well with the monitored data in the field. It is also reveals that the settlement of the peat soil will be stabilized in the near future.

关 键 词：泥炭质土 沉降监测 修正剑桥模型 沉降模拟 

分 类 号：TU411.1[建筑科学—岩土工程] U448.31[建筑科学—土工工程]