摘要
随着经济的快速发展和公路交通运输量的逐渐提高,原有双洞4车道、双洞6车道隧道已不能够满足交通运输和人民出行需求。超大跨度隧道结构具有扁平、大跨、薄拱等特点,其围岩荷载分布和支护力学特性复杂,结构稳定性差。论文以滨莱高速公路淄博西至莱芜段改扩建工程为例,介绍了大跨度隧道支护体系的监测结果与优化建议,旨在为今后研究和建设提供参考。
With the rapid development of economy and the gradual improvement ofhighway traffic volume,the original two-hole four-lane tunnel and two-hole six-lane tunnel can not meet the needs of transportation and people's travel.The large span tunnel structure has the characteristics of flat,long span and thin arch,its surrounding rock load distribution and support mechanics characteristic are complex,the structure stability is poor.Taking the reconstruction and extension project ofZibo west to Laiwu section of Binlai expressway as an example,this paper introduces the monitoring results and optimization suggestions of large span tunnel support system,hoping to provide a reference for future research and construction.
作者
王德志
WANG De-zhi(CCCC Third Highway Engineering Bureau Co.,Fourth Engineering Branch,Chongqing 401120,China)
出处
《工程建设与设计》
2019年第13期121-123,共3页
Construction & Design for Engineering
关键词
超大跨度隧道
隧道支护
监测分析
super large span tunnel
tunnel support
monitoring and analysis
