CAJ | 학술논문

城市地铁建设中，隧道开挖可能损坏上部土体中埋设的既有管线。如何控制管线沉降，从而保证其安全是地铁施工中必须考虑的问题。利用ANSYS有限元分析软件，模拟隧道开挖对刚性接口地下管线的影响，充分考虑了土质、管线参数及盾构施工参数等因素，分析了地下管线在不同因素影响下的沉降变化规律。计算结果表明，管线本身参数（除管材、直径外）对其沉降的影响相对较小，而土质及盾构施工参数对管线沉降的影响较为显著，应当予以重视。通过对北京某地铁区间隧道正交下穿钢筋混凝土雨水管的沉降实测资料与3种假设工况沉降计算值的对比分析，验证了前述结论的正确性。
성시지철건설중，수도개알가능손배상부토체중매설적기유관선。여하공제관선침강，종이보증기안전시지철시공중필수고필적문제。이용ANSYS유한원분석연건，모의수도개알대강성접구지하관선적영향，충분고필료토질、관선삼수급순구시공삼수등인소，분석료지하관선재불동인소영향하적침강변화규률。계산결과표명，관선본신삼수（제관재、직경외）대기침강적영향상대교소，이토질급순구시공삼수대관선침강적영향교위현저，응당여이중시。통과대북경모지철구간수도정교하천강근혼응토우수관적침강실측자료여3충가설공황침강계산치적대비분석，험증료전술결론적정학성。
In the process of subway construction , tunnel excavation may damage existing pipelines buried in the up-per soil .How to control the pipeline settlement , so as to ensure the safety must be considered in subway construc-tion.Utilizing ANSYS software , the fine models were established to study the effects of tunnel excavation on pipe-lines with rigid interface.In the simulation, soil properties, pipeline details and shield construction parameters were considered .The results showed that pipeline details ( in addition to material and diameter ) have smaller influ-ence on pipeline settlement , while soil properties and shield construction parameters have great influences on pipe -line settlement , and should be attracted particular attention .The correctness of foregoing conclusions were evalua-ted by the comparative analysis between the monitoring data from Beijing subway tunnel beneath through rainwater pipeline and the calculated data from three hypothetical project cases .