CAJ | 학술논문

为分析地下工程近接施工过程中对已建地下结构的位移及受力影响情况，以某地下商业街近接既有地铁隧道施工为依托，考虑既有地铁隧道结构存在的影响，对拟建的地下商业街负二层结构在施工过程中对负一层结构的影响进行研究。以地下商业街负一层结构施工结束为初始应力状态，通过有限元软件MI-DAS/GTS对负二层结构的施工过程进行数值模拟，分析负一层结构的位移及内力变化情况，以及施工过程的安全可行性。分析结果表明，负一层地下结构位移及弯矩的变化均在合理范围内，且既有隧道的存在可以减少负一层结构受负二层施工的影响。
위분석지하공정근접시공과정중대이건지하결구적위이급수력영향정황，이모지하상업가근접기유지철수도시공위의탁，고필기유지철수도결구존재적영향，대의건적지하상업가부이층결구재시공과정중대부일층결구적영향진행연구。이지하상업가부일층결구시공결속위초시응력상태，통과유한원연건MI-DAS/GTS대부이층결구적시공과정진행수치모의，분석부일층결구적위이급내력변화정황，이급시공과정적안전가행성。분석결과표명，부일층지하결구위이급만구적변화균재합리범위내，차기유수도적존재가이감소부일층결구수부이층시공적영향。
To analyze the change of displacement and stress in the approaching construction process of underground engineering,based on the underground commercial street approaching the existing metro tunnel structure, consider-ing the influence of the existing metro tunnel structure, the influence on negative one structure was discussed during the construction process of proposed underound commercial street negative second structure. The end of the negative one structure construction was considered as the initial stress state, the construction process of the negative second structure was simulated by finite element software MIDAS/GTS, and the changes of displacement and stress for the negative one structure, and the safety and feasibility during the approaching construction process were analyzed. The results show that the changes of displacement and moment of the negative one structure are in the reasonable range, and the existing tunnel can reduce the influence of the negative second structure construction on the negative one structure, and play a beneficial role.