滨海软弱土地基处理沉降监测预测与数值模拟  

Monitoring Prediction and Numerical Simulation of Settlement of Coastal Soft Soil Foundation Treatment

作　　者：李伟 朱兵见[2] 卢玉华 熊浩[2] LI Wei;ZHU Bingjian;LU Yuhua;XIONG Hao(Fangyuan Group Co.,Ltd.,Taizhou,Zhejiang 318000,China;School of Civil Engineering and Architecture,Taizhou University,Taizhou,Zhejiang 318000,China)

机构地区：[1]方远建设集团股份有限公司,浙江台州318000 [2]台州学院建筑工程学院,浙江台州318000

出　　处：《建筑施工》2022年第4期660-663,共4页Building Construction

基　　金：方远建设集团科研项目;台州学院培育项目(2019py042)。

摘　　要：水泥搅拌桩和塑料排水板联合进行地基处理,不但能够提高复合地基承载力,而且可加速地基土固结速度。通过工程现场基底沉降监测数据分析,利用Asaoka法预测了基底最终沉降量、固结度及工后沉降,与工程实际比较吻合。利用弹性理论计算的最终沉降量和数值模拟的结果比较接近,比工程监测预测值要小30%左右。对比分析发现,塑料排水板可以缩短地基土固结时间,但对最终沉降量影响不大。水泥搅拌桩联合塑料排水板进行地基处理,能够有效提高地基承载力和压缩模量,大幅度降低基底沉降量,是一种有效的滨海软土地基处理方法。The combination of cement mixing pile and plastic drainage board can not only improve the bearing capacity of composite foundation,but also accelerate the consolidation speed of foundation soil.Based on the analysis of the monitoring data of foundation settlement in the project site,the final settlement,degree of consolidation and post construction settlement of the foundation are predicted by Asaoka method,which is consistent with the actual project.The final settlement calculated by elastic theory is close to the results of numerical simulation,which is about 30%smaller than the predicted value of engineering monitoring.It is found that plastic drainage board can shorten the consolidation time of foundation soil,but has little effect on the final settlement.Cement mixing pile combined with plastic drainage board for foundation treatment can effectively improve the foundation bearing capacity and compression modulus,and greatly reduce the foundation settlement,which is an effective coastal soft soil foundation treatment method.

关 键 词：滨海软弱土 地基处理 监测预测 数值模拟 

分 类 号：TU753[建筑科学—建筑技术科学]