CAJ | 학술논문

以莞惠城际隧道下穿密集建筑区段为依托，利用现场监测结果、室内模型试验以及动静结合的数值模拟方法，对城市隧道穿越不同结构类型、位置和高度的既有房屋时的综合影响进行研究。研究结果表明：房屋基础埋置较浅的浅埋隧道段，砌体结构房屋变形和振速均比框架结构大，随着楼层高度增加，房屋水平位移的影响明显大于竖向位移，且低层结构更易发生受拉破坏，同时振速呈现出放大效应；隧道静力开挖时，位于掌子面前方的结构受力和位移均明显大于后方的房屋结构；随着爆心距增大，振速逐渐变小，但到达远端墙体时振速出现放大趋势，在确定监控方案时，需考虑对远方墙体的振动监控；爆心距离越小，其振速高度效应越明显，需重点监测顶层的振速；在上软下硬复合地层中，隧道开挖影响范围距掌子面约20 m，偏离隧道中心线超过20 m时，沉降速率增大，量值呈明显减小的趋势。
이완혜성제수도하천밀집건축구단위의탁，이용현장감측결과、실내모형시험이급동정결합적수치모의방법，대성시수도천월불동결구류형、위치화고도적기유방옥시적종합영향진행연구。연구결과표명：방옥기출매치교천적천매수도단，체체결구방옥변형화진속균비광가결구대，수착루층고도증가，방옥수평위이적영향명현대우수향위이，차저층결구경역발생수랍파배，동시진속정현출방대효응；수도정력개알시，위우장자면전방적결구수력화위이균명현대우후방적방옥결구；수착폭심거증대，진속축점변소，단도체원단장체시진속출현방대추세，재학정감공방안시，수고필대원방장체적진동감공；폭심거리월소，기진속고도효응월명현，수중점감측정층적진속；재상연하경복합지층중，수도개알영향범위거장자면약20 m，편리수도중심선초과20 m시，침강속솔증대，량치정명현감소적추세。
Based on Guanhui intercity tunnel passing underneath dense-constructed areas,this paper used the field monitoring results,laboratory model tests,dynamic and static combining numerical simulation method,to analyze the comprehensive influences when urban tunnels passing existing buildings with different structural types,location and height.The research shows that under the shallow buried tunnel section of the shallow build-ing foundation,the deformation and vibration velocity of masonry structures are larger than frame structures. With the increase of floor height,the influence of horizontal displacement is significantly greater than vertical dis-placement,the tensile damage of lower structures is more likely to occur,and at the same time,vibration veloci-ty presents the amplification effect.At the time of static tunnel excavation,the stress and displacement of struc-tures located in front of tunnel face are significantly greater than those behind the tunnel face.When the blast center distance increases,the vibration velocity decreases gradually;however,when it arrives at the distal wall the vibration velocity increases.Consequently,when determining the monitoring plan,the vibration monitoring of distant wall should be considered.The smaller the blast center distance,the more obvious effect of vibration ve-locity height.The top velocity should be mainly monitored.In upper-soft and lower-hard ground,the influ-ence scope of tunnel excavation is about 20 m measured from the tunnel face.When deviation from the tunnel centerline exceeds 20m,settling velocity increases,and the magnitude of settlement decreases significantly.