CAJ | 학술논문

为解决在不影响既有桩基建筑物安全的情况下保证盾构法隧道正常施工的问题，在消化吸收国内外盾构下穿建筑物和切削桩基技术的基础上，以深圳地铁9号线大剧院—鹿丹村区间工程为例，根据地层及既有建筑物情况，对现有盾构下穿方案进行改进。首先理论分析验证方案可行性，然后确定具体施工措施，并在实施中严格控制施工质量。总结了盾构法施工下穿桩基建筑群的施工技术：1）提前加固下穿区土体；2）设置盾构推进试验段；3）盾构改造；4）地面二次注浆。施工措施有效地保证了盾构的顺利下穿，确保了既有建筑物的安全。
위해결재불영향기유장기건축물안전적정황하보증순구법수도정상시공적문제，재소화흡수국내외순구하천건축물화절삭장기기술적기출상，이심수지철9호선대극원—록단촌구간공정위례，근거지층급기유건축물정황，대현유순구하천방안진행개진。수선이론분석험증방안가행성，연후학정구체시공조시，병재실시중엄격공제시공질량。총결료순구법시공하천장기건축군적시공기술：1）제전가고하천구토체；2）설치순구추진시험단；3）순구개조；4）지면이차주장。시공조시유효지보증료순구적순리하천，학보료기유건축물적안전。
In this paper,the technologies for shield boring underneath existing buildings from Grand Theater station to Ludan Village station of Shenzhen Metro is determined on basis of studying on relative technologies in China and abroad, so as to guarantee safe shield boring and avoid adverse impact on the existing pile foundations.The practicability of the construction technologies is theoretically analyzed,and the details of the construction technologies are determined.The construction technologies,including ground consolidation,trial boring,shield modification and ground surface secondary grouting,are summarized.In the end,the shield has crossed underneath the buildings successfully,and the safety of the buildings has been guaranteed.