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The impact vibration caused by blasting demolition of tall buildings (structures) may affect the service status of adjacent subway tunnels. In order to demolish a 24 story frame structure building only 6.5 meters away from the subway tunnel, on-site tests and analysis of blasting vibrations and dynamic strains were first conducted. And then, a three-dimensional finite element calculation model was established for analyzing the dynamic response of the subway tunnel structure by ANSYS/LS-DYNA, which can reasonably describe the impact of the collapsed part on the ground during the blasting demolition of the building. Finally, the vibration response characteristics and dynamic stress changes of the tunnel structure under the impact of building collapse were simulated and compared with the field measured data. The research results show that the peak particle vibration velocity (8.61 mm/s) in the subway tunnel caused by the drilling and blasting of the load-bearing columns is greater than the peak particle vibration velocity (4.95 mm/s) caused by the impact of the building on the ground. The main frequency of the blasting vibration and the collapse impact vibration are about 100 Hz and 2 Hz, respectively. The vibration velocity of the subway tunnel under the action of the collapse impact load is equivalent to the structural vibration caused by an earthquake with an intensity of Level Ⅲ (3.82~8.19 mm/s). The low-frequency collapse impact vibration can cause relatively obvious additional dynamic stress to the subway tunnel. The dynamic compressive stress generated in the circumferential direction of the tunnel is about 4 MPa, and the dynamic tensile stress generated in the axial and tangential directions is about 0.4 MPa. The existing cracks may expand, or delamination may occur when the internal damages or construction defects are generated in the tunnel structure under the impact of dynamic tension and compression cycles. The safety allowable particle vibration velocity value of 10~12 cm/s when f<10 Hz required in the current blasting safety regulation (GB6722—2014) is dangerously high, and it should be adjusted in combination with the frequency and dynamic strain characteristics.
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高大建(构)筑物爆破拆除产生的冲击振动可能会影响邻近地铁隧道的安全服役。论文依托距离地铁隧道仅6.5 m的24层框架结构楼房爆破拆除工程,首先开展了楼房对应区域地铁隧道的振动与动应变现场测试与分析,其次应用ANSYS/LS-DYNA有限元软件建立了适于描述楼房爆破拆除塌落体触地冲击的地铁隧道结构动力响应三维有限元计算模型,模拟了塌落冲击作用下隧道结构的振动响应特征与动应力变化情况,并与现场实测结果对比分析。研究结果表明:承重立柱钻孔爆破引起的地铁隧道内质点振动速度峰值(8.61 mm/s)大于楼房切口闭合触地冲击引起的质点振动速度峰值(4.95 mm/s),爆破振动主频为100 Hz左右,塌落冲击振动主频为2 Hz左右,塌落冲击荷载作用下的地铁隧道振动速度与Ⅲ级地震烈度引起的结构振动相当(3.82~8.19 mm/s);楼房切口闭合时的低频塌落冲击振动会使地铁隧道管片产生较为明显的附加动应力,管片环向产生4 MPa左右的动态压应力,轴向和切向产生0.4 MPa左右的动态拉应力;受动态拉压循环冲击作用,管片结构若存在内部损伤或施工缺陷,可能会出现既有裂缝扩大或层裂剥落现象;现行《爆破安全规程》(GB6722—2014)确定的f<10 Hz时的10~12 cm/s安全允许质点振动速度值偏于危险,应结合频率特性与动态应变特征进行调整。论文可为塌落冲击作用下地铁隧道的安全评价与安全防护提供参考。
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姚颖康(1981-),男,博士、高级工程师,主要从事建筑物精细爆破拆除和土木工程防灾减灾等领域的理论与技术研究,(E-mail)shanxiyao@jhun.edu.cn。
YAO Ying-kang (1981-), male, Ph. D, senior engineer, mainly engaged in the theoretical and technical research in the fields of fine blasting and demolition of buildings and civil engineering disaster prevention and mitigation, (E-mail) shanxiyao@jhun.edu.cn.
, authorsList=姚颖康, 杨成, 贾永胜, 黄小武, 孙金山)}, authors=[Author(id=1241687556035768926, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=shanxiyao@jhun.edu.cn, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1241687556128043625, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, authorId=1241687556035768926, language=EN, stringName=Ying-kang YAO, firstName=Ying-kang, middleName=null, lastName=YAO, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1a, 1b, address=
1a.State Key Laboratory of Precision Blasting, Jianghan University, Wuhan 430056, China
1b.Hubei Key Laboratory of Blasting Engineering, Jianghan University, Wuhan 430056, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1241687556228706930, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, authorId=1241687556035768926, language=CN, stringName=姚颖康, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1a, 1b, address=
1a.江汉大学 省部共建精细爆破国家重点实验室,武汉 430056
1b.江汉大学 爆破工程湖北省重点实验室,武汉 430056, bio={"content":"
姚颖康(1981-),男,博士、高级工程师,主要从事建筑物精细爆破拆除和土木工程防灾减灾等领域的理论与技术研究,(E-mail)shanxiyao@jhun.edu.cn。
YAO Ying-kang (1981-), male, Ph. D, senior engineer, mainly engaged in the theoretical and technical research in the fields of fine blasting and demolition of buildings and civil engineering disaster prevention and mitigation, (E-mail) shanxiyao@jhun.edu.cn.
"}, bioImg=null, bioContent=
姚颖康(1981-),男,博士、高级工程师,主要从事建筑物精细爆破拆除和土木工程防灾减灾等领域的理论与技术研究,(E-mail)shanxiyao@jhun.edu.cn。
YAO Ying-kang (1981-), male, Ph. D, senior engineer, mainly engaged in the theoretical and technical research in the fields of fine blasting and demolition of buildings and civil engineering disaster prevention and mitigation, (E-mail) shanxiyao@jhun.edu.cn.
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1a.State Key Laboratory of Precision Blasting, Jianghan University, Wuhan 430056, China), AuthorCompanyExt(id=1241687555696030271, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, companyId=1241687555683447357, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1a.江汉大学 省部共建精细爆破国家重点实验室,武汉 430056)]), AuthorCompany(id=1241687555784110662, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, xref=1b., ext=[AuthorCompanyExt(id=1241687555792499271, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, companyId=1241687555784110662, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1b.Hubei Key Laboratory of Blasting Engineering, Jianghan University, Wuhan 430056, China), AuthorCompanyExt(id=1241687555800887880, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, companyId=1241687555784110662, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1b.江汉大学 爆破工程湖北省重点实验室,武汉 430056)])]), Author(id=1241687556341953153, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, orderNo=1, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1241687556480365196, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, authorId=1241687556341953153, language=EN, stringName=Cheng YANG, firstName=Cheng, middleName=null, lastName=YANG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1a, 1b, address=
1a.State Key Laboratory of Precision Blasting, Jianghan University, Wuhan 430056, China
1b.Hubei Key Laboratory of Blasting Engineering, Jianghan University, Wuhan 430056, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1241687556581028502, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, authorId=1241687556341953153, language=CN, stringName=杨成, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1a, 1b, address=
1a.江汉大学 省部共建精细爆破国家重点实验室,武汉 430056
1b.江汉大学 爆破工程湖北省重点实验室,武汉 430056, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1241687555683447357, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, xref=1a., ext=[AuthorCompanyExt(id=1241687555691835968, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, companyId=1241687555683447357, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1a.State Key Laboratory of Precision Blasting, Jianghan University, Wuhan 430056, China), AuthorCompanyExt(id=1241687555696030271, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, companyId=1241687555683447357, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1a.江汉大学 省部共建精细爆破国家重点实验室,武汉 430056)]), AuthorCompany(id=1241687555784110662, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, xref=1b., ext=[AuthorCompanyExt(id=1241687555792499271, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, companyId=1241687555784110662, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1b.Hubei Key Laboratory of Blasting Engineering, Jianghan University, Wuhan 430056, China), AuthorCompanyExt(id=1241687555800887880, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, companyId=1241687555784110662, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1b.江汉大学 爆破工程湖北省重点实验室,武汉 430056)])]), Author(id=1241687556664914593, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, orderNo=2, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1241687556769772201, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, authorId=1241687556664914593, language=EN, stringName=Yong-sheng JIA, firstName=Yong-sheng, middleName=null, lastName=JIA, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1a, 1b, address=
1a.State Key Laboratory of Precision Blasting, Jianghan University, Wuhan 430056, China
1b.Hubei Key Laboratory of Blasting Engineering, Jianghan University, Wuhan 430056, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1241687556866241204, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, authorId=1241687556664914593, language=CN, stringName=贾永胜, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1a, 1b, address=
1a.江汉大学 省部共建精细爆破国家重点实验室,武汉 430056
1b.江汉大学 爆破工程湖北省重点实验室,武汉 430056, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1241687555683447357, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, xref=1a., ext=[AuthorCompanyExt(id=1241687555691835968, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, companyId=1241687555683447357, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1a.State Key Laboratory of Precision Blasting, Jianghan University, Wuhan 430056, China), AuthorCompanyExt(id=1241687555696030271, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, companyId=1241687555683447357, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1a.江汉大学 省部共建精细爆破国家重点实验室,武汉 430056)]), AuthorCompany(id=1241687555784110662, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, xref=1b., ext=[AuthorCompanyExt(id=1241687555792499271, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, companyId=1241687555784110662, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1b.Hubei Key Laboratory of Blasting Engineering, Jianghan University, Wuhan 430056, China), AuthorCompanyExt(id=1241687555800887880, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, companyId=1241687555784110662, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1b.江汉大学 爆破工程湖北省重点实验室,武汉 430056)])]), Author(id=1241687556941738683, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, orderNo=3, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1241687557042401988, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, authorId=1241687556941738683, language=EN, stringName=Xiao-wu HUANG, firstName=Xiao-wu, middleName=null, lastName=HUANG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
2, address=
2.Wuhan Explosions and Blasting Corporation Limited, Wuhan 430056, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1241687557130482378, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, authorId=1241687556941738683, language=CN, stringName=黄小武, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
2, address=
2.武汉爆破有限公司,武汉 430056, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1241687555901551186, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, xref=2., ext=[AuthorCompanyExt(id=1241687555909939796, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, companyId=1241687555901551186, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2.Wuhan Explosions and Blasting Corporation Limited, Wuhan 430056, China), AuthorCompanyExt(id=1241687555922522708, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, companyId=1241687555901551186, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2.武汉爆破有限公司,武汉 430056)])]), Author(id=1241687557239534295, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, orderNo=4, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1241687557352780517, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, authorId=1241687557239534295, language=EN, stringName=Jin-shan SUN, firstName=Jin-shan, middleName=null, lastName=SUN, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1a, 1b, address=
1a.State Key Laboratory of Precision Blasting, Jianghan University, Wuhan 430056, China
1b.Hubei Key Laboratory of Blasting Engineering, Jianghan University, Wuhan 430056, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1241687557432472302, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, authorId=1241687557239534295, language=CN, stringName=孙金山, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1a, 1b, address=
1a.江汉大学 省部共建精细爆破国家重点实验室,武汉 430056
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楼房平面示意图(单位:m), figureFileSmall=hmuJ4QCiSkdyTBp7OoJFmg==, figureFileBig=avEofIa2t5U7KWUmWcMssA==, tableContent=null), ArticleFig(id=1241687560456565598, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, language=EN, label=Fig. 2, caption=
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爆破切口示意图(单位:m), figureFileSmall=MVDHD3zzpK3XZIpimTNFzw==, figureFileBig=3gr8rOB8+LAfJdKfF0OSNg==, tableContent=null), ArticleFig(id=1241687560867607413, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, language=EN, label=Fig. 4, caption=
Delay time of the blasting cuts (unit: mm), figureFileSmall=RYjG9WTia7LFBHVFRT60Hw==, figureFileBig=CNB4NGUemGgxgNWZFJ91fg==, tableContent=null), ArticleFig(id=1241687560938910586, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, language=CN, label=图4, caption=
起爆切口延期示意图(单位:mm), figureFileSmall=RYjG9WTia7LFBHVFRT60Hw==, figureFileBig=CNB4NGUemGgxgNWZFJ91fg==, tableContent=null), ArticleFig(id=1241687561047962496, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, language=EN, label=Fig. 5, caption=
Field layout of the strain gauge, figureFileSmall=VAnYFgWEfOauiTyOIYWlNQ==, figureFileBig=R9FUhPifPJE3AYfnmq82vg==, tableContent=null), ArticleFig(id=1241687561140237192, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, language=CN, label=图5, caption=
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Division of the vibration velocity results, figureFileSmall=q4KUpV6TccFuFdEw5lEH+g==, figureFileBig=+gRayCLljEnSd3APrKjIaw==, tableContent=null), ArticleFig(id=1241687561320592276, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, language=CN, label=图6, caption=
振动速度结果划分, figureFileSmall=q4KUpV6TccFuFdEw5lEH+g==, figureFileBig=+gRayCLljEnSd3APrKjIaw==, tableContent=null), ArticleFig(id=1241687561429644186, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, language=EN, label=Fig. 7, caption=
Vibration velocities of each measuring point, figureFileSmall=1BOEzBg5Xwb2cmNF1iHNAA==, figureFileBig=DZ1a1xuxZUzUJTsD2CjH+A==, tableContent=null), ArticleFig(id=1241687561509335967, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, language=CN, label=图7, caption=
各测点振动速度, figureFileSmall=1BOEzBg5Xwb2cmNF1iHNAA==, figureFileBig=DZ1a1xuxZUzUJTsD2CjH+A==, tableContent=null), ArticleFig(id=1241687561601610665, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, language=EN, label=Fig. 8, caption=
Dynamic strains of each measuring point, figureFileSmall=QX0rZWGKapJn93M87jNGlA==, figureFileBig=4TbptvSUVsbO428SaBK9+g==, tableContent=null), ArticleFig(id=1241687561698079662, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, language=CN, label=图8, caption=
各测点动态应变, figureFileSmall=QX0rZWGKapJn93M87jNGlA==, figureFileBig=4TbptvSUVsbO428SaBK9+g==, tableContent=null), ArticleFig(id=1241687561815520179, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, language=EN, label=Fig. 9, caption=
Time history curve corresponding to vibration velocity and strains of No. 2 measuring point, figureFileSmall=HHEC+cJk6QBc8obxAYZ5/g==, figureFileBig=keDxV9KbIF4PsuQxJZVnSA==, tableContent=null), ArticleFig(id=1241687561932960697, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, language=CN, label=图9, caption=
2#测点振动速度与应变对应时程曲线, figureFileSmall=HHEC+cJk6QBc8obxAYZ5/g==, figureFileBig=keDxV9KbIF4PsuQxJZVnSA==, tableContent=null), ArticleFig(id=1241687562012652476, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, language=EN, label=Fig. 10, caption=
Numerical model of the field experiment, figureFileSmall=iFqRuUFjQb9KHj3/l0uaPA==, figureFileBig=IBkFz9j8dhjyyjwGZX2d3w==, tableContent=null), ArticleFig(id=1241687562151064517, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, language=CN, label=图10, caption=
现场实验数值模型示意图, figureFileSmall=iFqRuUFjQb9KHj3/l0uaPA==, figureFileBig=IBkFz9j8dhjyyjwGZX2d3w==, tableContent=null), ArticleFig(id=1241687563656819661, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, language=EN, label=Fig. 11, caption=
layout of measuring points, figureFileSmall=ZCWO2xk2a2NIydg+eQBF6Q==, figureFileBig=evb0nJtU5WJ2qEi+WpUSWw==, tableContent=null), ArticleFig(id=1241687563782648786, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, language=CN, label=图11, caption=
数值模型振动与应变测点布置, figureFileSmall=ZCWO2xk2a2NIydg+eQBF6Q==, figureFileBig=evb0nJtU5WJ2qEi+WpUSWw==, tableContent=null), ArticleFig(id=1241687563887506394, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, language=EN, label=Fig. 12, caption=
Tunnel stress distribution, figureFileSmall=llwxheeyxTZz4EYQQrXFvg==, figureFileBig=na6dIK2sZBZkPy3jF5JHwg==, tableContent=null), ArticleFig(id=1241687563996558303, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, language=CN, label=图12, caption=
地铁隧道附加动应力云图, figureFileSmall=llwxheeyxTZz4EYQQrXFvg==, figureFileBig=na6dIK2sZBZkPy3jF5JHwg==, tableContent=null), ArticleFig(id=1241687564105610212, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, language=EN, label=Fig. 13, caption=
Comparison between numerical simulation and field tests, figureFileSmall=AXuDuKJiV83Vrfkg0EyyCg==, figureFileBig=dIPzbgZEw7A5vgfX4pIVQw==, tableContent=null), ArticleFig(id=1241687564206273513, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, language=CN, label=图13, caption=
同一测点处数值模拟与实测结果对比, figureFileSmall=AXuDuKJiV83Vrfkg0EyyCg==, figureFileBig=dIPzbgZEw7A5vgfX4pIVQw==, tableContent=null), ArticleFig(id=1241687564315325423, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, language=EN, label=Table 1, caption=
PPV of No. 2 measuring point (unit: mm/s)
, figureFileSmall=null, figureFileBig=null, tableContent=
| | 0.0 s | 0.5 s | 1.0 s | 1.5 s | 4.5 s | 7.5 s |
|---|
| X速度峰值 | 1.4 | 2.7 | 1.9 | 5.1 | 3.8 | 0.5 |
| Y速度峰值 | 1.0 | 1.3 | 2.7 | 5.6 | 1.5 | 0.6 |
| Z速度峰值 | 1.1 | 2.7 | 3.5 | 6.4 | 5.0 | 0.9 |
), ArticleFig(id=1241687564386628597, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, language=CN, label=表1, caption=
2号测点典型时刻质点振动速度峰值(单位:mm/s)
, figureFileSmall=null, figureFileBig=null, tableContent=
| | 0.0 s | 0.5 s | 1.0 s | 1.5 s | 4.5 s | 7.5 s |
|---|
| X速度峰值 | 1.4 | 2.7 | 1.9 | 5.1 | 3.8 | 0.5 |
| Y速度峰值 | 1.0 | 1.3 | 2.7 | 5.6 | 1.5 | 0.6 |
| Z速度峰值 | 1.1 | 2.7 | 3.5 | 6.4 | 5.0 | 0.9 |
), ArticleFig(id=1241687564474708987, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, language=EN, label=Table 2, caption=
Dominant frequency of No. 2 measuring point (unit: Hz)
, figureFileSmall=null, figureFileBig=null, tableContent=
| | 0.0 s | 0.5 s | 1.5 s | 4.5 s | 7.5 s | 1.0 s |
|---|
| X方向主频 | 90.9 | 71.4 | 142.8 | 1.3 | 6.9 | 125.0 |
| Y方向主频 | 93.3 | 83.3 | 111.1 | 2.2 | 17.8 | 74.9 |
| Z方向主频 | 142.8 | 90.9 | 100.0 | 1.6 | 11.1 | 40.0 |
), ArticleFig(id=1241687564550206462, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, language=CN, label=表2, caption=
2号测点典型时刻质点振动主频(单位:Hz)
, figureFileSmall=null, figureFileBig=null, tableContent=
| | 0.0 s | 0.5 s | 1.5 s | 4.5 s | 7.5 s | 1.0 s |
|---|
| X方向主频 | 90.9 | 71.4 | 142.8 | 1.3 | 6.9 | 125.0 |
| Y方向主频 | 93.3 | 83.3 | 111.1 | 2.2 | 17.8 | 74.9 |
| Z方向主频 | 142.8 | 90.9 | 100.0 | 1.6 | 11.1 | 40.0 |
), ArticleFig(id=1241687564642480132, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, language=EN, label=Table 3, caption=
Physical and mechanical parameters of Jiangtian Building structure
, figureFileSmall=null, figureFileBig=null, tableContent=
| ρ/(g·cm-3) | E/GPa | μ | σ0/MPa | Etan/GPa |
|---|
| 2.5 | 34.5 | 0.2 | 23.1 | 9.0 |
), ArticleFig(id=1241687564726366215, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, language=CN, label=表3, caption=
江天大厦楼房结构物理力学参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| ρ/(g·cm-3) | E/GPa | μ | σ0/MPa | Etan/GPa |
|---|
| 2.5 | 34.5 | 0.2 | 23.1 | 9.0 |
), ArticleFig(id=1241687564818640908, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, language=EN, label=Table 4, caption=
Physical and mechanical parameters of soil material
, figureFileSmall=null, figureFileBig=null, tableContent=
| ρ/(g·cm-3) | E/GPa | μ | c/MPa | φ/° | σt/GPa |
|---|
| 1.98 | 0.039 | 0.35 | 0.035 | 15 | 0.028 |
), ArticleFig(id=1241687564915109907, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, language=CN, label=表4, caption=
土体材料的物理力学参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| ρ/(g·cm-3) | E/GPa | μ | c/MPa | φ/° | σt/GPa |
|---|
| 1.98 | 0.039 | 0.35 | 0.035 | 15 | 0.028 |
), ArticleFig(id=1241687565007384599, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, language=EN, label=Table 5, caption=
Physical and mechanical parameters of tunnel materials
, figureFileSmall=null, figureFileBig=null, tableContent=
| ρ/(g·cm-3) | E/GPa | μ | A1/GPa | A2/GPa | A3/GPa | B0 | B1 | T1/GPa | T2/GPa |
|---|
| 2.4 | 50 | 0.2 | 35.27 | 39.58 | 9.04 | 1.22 | 1.22 | 35.27 | 0 |
), ArticleFig(id=1241687565124825120, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, language=CN, label=表5, caption=
隧道材料的主要物理力学参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| ρ/(g·cm-3) | E/GPa | μ | A1/GPa | A2/GPa | A3/GPa | B0 | B1 | T1/GPa | T2/GPa |
|---|
| 2.4 | 50 | 0.2 | 35.27 | 39.58 | 9.04 | 1.22 | 1.22 | 35.27 | 0 |
), ArticleFig(id=1241687565200322593, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, language=EN, label=Table 6, caption=
Vibration velocity of each measuring point in the numerical model (unit: mm/s)
, figureFileSmall=null, figureFileBig=null, tableContent=
| | X峰值 | Y峰值 | Z峰值 |
|---|
| 测点1 | 1.6 | 3.8 | 1.6 |
| 测点2 | 1.4 | 3.9 | 1.3 |
| 测点3 | 1.7 | 3.7 | 1.5 |
), ArticleFig(id=1241687565275820070, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, language=CN, label=表6, caption=
各测点数值模拟振动速度(单位:mm/s)
, figureFileSmall=null, figureFileBig=null, tableContent=
| | X峰值 | Y峰值 | Z峰值 |
|---|
| 测点1 | 1.6 | 3.8 | 1.6 |
| 测点2 | 1.4 | 3.9 | 1.3 |
| 测点3 | 1.7 | 3.7 | 1.5 |
), ArticleFig(id=1241687565363900458, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, language=EN, label=Table 7, caption=
Additional dynamic stress at each measuring point in the numerical model
, figureFileSmall=null, figureFileBig=null, tableContent=
| | 沿隧道环向应力/MPa | 沿隧道轴向(切向)应力/MPa |
|---|
| 测点1 | -3.82 | 0.25 |
| 测点2 | -4.61 | 0.38 |
| 测点3 | -3.74 | 0.23 |
), ArticleFig(id=1241687565468758063, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, language=CN, label=表7, caption=
数值模型各测点附加动应力
, figureFileSmall=null, figureFileBig=null, tableContent=
| | 沿隧道环向应力/MPa | 沿隧道轴向(切向)应力/MPa |
|---|
| 测点1 | -3.82 | 0.25 |
| 测点2 | -4.61 | 0.38 |
| 测点3 | -3.74 | 0.23 |
), ArticleFig(id=1241687565561032756, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, language=EN, label=Table 8, caption=
Blasting vibration safety allowable standards (excerpt)
, figureFileSmall=null, figureFileBig=null, tableContent=
| 保护对象类别 | 安全允许质点振动速度 |
|---|
| f<10 Hz | 10 Hz<f<50 Hz | f>50 Hz |
|---|
| 水工隧洞 | 7~8 | 8~10 | 10~15 |
| 交通隧洞 | 10~12 | 12~15 | 15~20 |
| 矿山巷道 | 15~18 | 18~25 | 20~30 |
), ArticleFig(id=1241687565636530231, tenantId=1146029695717560320, journalId=1240670690148397066, articleId=1241687548355997909, language=CN, label=表8, caption=
爆破振动安全允许标准(节选)
, figureFileSmall=null, figureFileBig=null, tableContent=
| 保护对象类别 | 安全允许质点振动速度 |
|---|
| f<10 Hz | 10 Hz<f<50 Hz | f>50 Hz |
|---|
| 水工隧洞 | 7~8 | 8~10 | 10~15 |
| 交通隧洞 | 10~12 | 12~15 | 15~20 |
| 矿山巷道 | 15~18 | 18~25 | 20~30 |
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