摘要
结合青岛地铁三号线中山公园车站施工实例,以CRD工法为基础,分析了左、中、右导洞以错开10 m的特殊施工形式下,各导洞间的相互影响,通过数值模拟研究了导洞开挖后关键部位的位移变化量,并以此提出了支护方案的改进,从支护后塑性区变化、支护结构的受力情况和关键部位位移变化量证实了支护方案的优越性和正确性。
Taking the Zhongshan Park station construction of Qingdao metro No. 3 line as an example,based on CRD method,this paper analyzed the interaction influence of each guide tunnel under the special construction form of left,mid,right guide tunnel with 10 m stagger,through the numerical simulation researched the displacement changes of the key parts after guide tunnel excavation,and put forward the improvement of sup-port scheme,confirmed the superiority and correctness from the plastic zone changed after support,the force of support structure,the displace-ment changes of key parts of support scheme.
出处
《山西建筑》
2015年第3期192-193,共2页
Shanxi Architecture
关键词
拱盖法
群洞效应
加固措施
数值模拟
arch cover method
multi cavern effect
reinforcement measure
numerical simulation
