摘要
为了更加深入地分析基坑开挖过程对周围环境与构筑物的影响,本文结合广州琶洲港澳客运口岸项目基坑工程,通过使用midasGTS/NX软件模拟计算基坑工程施工过程中基坑底部在建地铁盾构隧道、邻近有轨电车的结构位移,评估基坑工程在各施工工况下有轨电车、盾构隧道结构的安全状态。有轨电车道床结构、盾构隧道结构水平、竖向位移极值各项数据计算结果表明:施工对邻近既有有轨电车结构和在建地铁隧道形成一定影响,最不利影响处于有轨电车、地铁左右线在基坑施工范围段停车的极限工况,但各位移极值均未超过允许范围,因此,该基坑施工过程不危及邻近有轨电车结构和地铁隧道的整体安全。
To analyze more deeply the impact of the foundation excavation process on the surrounding environment and structures, this paper set the foundation pit project of Guangzhou Pazhou Hong Kong-Macao Passenger Port project as an example to simulate and calculate the structural displacement of the under-construction subway shield tunnel and adjacent tram at the bottom of the foundation by using Midas GTS/NX software.The safety state of the tram and shield tunnel structures during the construction process was evaluated. The conclusions are as follows, the construction process has an impact on adjacent existing tram structures and subway tunnels under construction. The most unfavorable situation is in the extreme working condition at the parking place of the tram and subway’s left and right lines in the construction range of foundation pit respectively. However,each extreme displacement value does not exceed the allowable range. Thus, the pit construction process will not endanger the overall safety of the adjacenttramstructureand subwaytunnel.
作者
胡健健
柯亨有
陈勇杰
上波洋
黄洪发
谢弘敏
HU Jian-jian;KEHeng-you;CHEN Yong-jie;SHANG Bo-yang;HUANG Hong-fa;XIE Hong-min(Guangzhou Municipal Dunjian Construction Co.,Ltd,Guangzhou 511400;Guangzhou Pazhou HongKong Macao Passenger Transport Co.,Ltd,Guangzhou 510220)
出处
《广州建筑》
2021年第6期23-32,共10页
GUANGZHOU ARCHITECTURE
