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.
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)
关键词
盾构掘进
PECK公式
数值模拟
稳定性分析
控制措施
shield tunnel digging
Peck formula
numerical simulation
stability analysis
control measure
