盾构掘进穿越海堤稳定性分析与工程控制措施  

Stability Analysis for Seawall with Shield Tunnel Digging and Engineering Control Measures

作　　者：徐学勇[1,2] 樊延强[1] 宋庆晓 杜文博[1] 贾海波[1] 

机构地区：[1]中国水电顾问集团华东勘测设计研究院,浙江杭州310014 [2]中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室,湖北武汉430071 [3]青岛中德生态园联合发展有限公司,山东青岛266555

出　　处：《水利与建筑工程学报》2013年第3期63-66,共4页Journal of Water Resources and Architectural Engineering

基　　金：国家自然科学基金项目(41101519)

摘　　要：结合盾构穿越工程实例,对海堤沉降变形和整体抗滑稳定系数进行计算和分析。结果表明:海堤最大沉降为9.2 mm,穿越位置海堤整体抗滑稳定系数略有降低,但满足规范要求的抗滑稳定安全系数,在正常施工条件下,不会造成海堤整体失稳。为消除沉降对堤身土体的密实度和防渗性能的不利影响,宜对受影响的区域土体进行灌浆加固。Combined with the engineering examples of shield tunnel digging, the theoretic analysis method and numerical simulation are adopted here to calculate the ground settlement and anti-slide coefficient of seawall. The results show that the maximum ground settlement is 9.2 mm, and the seawall anti-slide stability coefficient decreases slightly, but it is in a safe range, so it is not able to couse the instability of the seawall. In order to eliminate the adverse effects of the settlement on the density and anti-seepage properties of the seawall, the appropriate control measures such as grouting should be carry out.

关 键 词：盾构掘进 PECK公式 数值模拟 稳定性分析 控制措施 

分 类 号：U455[建筑科学—桥梁与隧道工程]