Comparison analysis of the impact of soft ground improvement construction on existing railways near newly constructed lines
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摘要:
我国东南沿海一带，铁路既有线的建设时代久远、铁路路基建设标准低，地基土质条件差，受增建新线铁路路基的地基处理施工影响明显。对地基处理施工进行现场监测，选取施工影响小的地基处理方法对保障既有铁路运营安全至关重要。根据超孔隙水压力、地表位移和深层位移的现场施工监测数据，分析地基处理施工影响范围和程度，得到以下结论：（1）施工影响由大到小的排序为高压旋喷桩（管桩）>水泥搅拌桩>全方位高压喷射（MJS）桩>布袋桩；（2）水泥搅拌桩施工影响范围在5 m左右，高压旋喷桩施工影响范围高达10 m，布袋桩施工影响范围大约为3 m，MJS桩施工影响范围在4 m左右。对比高压旋喷桩、管桩、布袋桩和MJS桩与搅拌桩施工影响大小，优化临近既有铁路增建新线的地基处理方案，可以有效控制增建新线地基处理对既有铁路的扰动影响，确保既有铁路安全。
Abstract:In the southeast coastal area of China, existing railway lines, constructed long ago with low construction standards for railway subgrades, face significant impacts from the construction of soft ground improvement for newly built railway lines. Through on-site monitoring of foundation treatment construction, it is crucial to select the soft ground improvement method with minimal construction impact to ensure the operation safety of the existing railway. Based on the on-site monitoring data of the excess pore water pressure, surface displacement, and deep displacement in the construction of soft ground improvement, the study assesses the extent and magnitude of construction impact. The key findings include: (1) Ranking of construction impact magnitude: High-pressure jet grouting column (pipe pile) > deep cement mixing column > MJS column > geosynthetic reinforced column; (2) Construction impact range: deep cement mixing column, high-pressure jet grouting column, geosynthetic reinforced column and MJS column are about 5 m, 10 m, 3 m and 4 m, respectively. The construction disturbance of high-pressure jet grouting pile, pipe pile, polymer bag grouting pile and deep cement mixing column are compared based on the differences of excess pore water pressure, surface displacement, deep displacement and construction disturbance range. It is provided a basis for comparison and selection of schemes for soft ground improvement of new railway lines adjacent to existing railways. This optimization effectively controls the construction disturbance of the soft ground treatment of the new line and ensures the safety of the existing railway.
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[1] 敖江忠,郑新江,李东,等. 旋喷桩连续施工引起的地表变形现场试验研究[J]. 地下空间与工程学报,2022,18(3):982 − 988. [AO Jiangzhong,ZHENG Xinjiang,LI Dong,et al. Field-test study on ground deformation in continuous construction of jet grouting[J]. Chinese Journal of Underground Space and Engineering,2022,18(3):982 − 988. (in Chinese with English abstract)
AO Jiangzhong, ZHENG Xinjiang, LI Dong, et al. Field-test study on ground deformation in continuous construction of jet grouting[J]. Chinese Journal of Underground Space and Engineering, 2022, 18（3）: 982 − 988. （in Chinese with English abstract） [2] 武凤远,徐永福. 地基处理施工扰动引起软土灾变的识别方法[J]. 地下空间与工程学报,2023,19(3):1001 − 1008. [WU Fengyuan,XU Yongfu. Identification method of soft soil disaster due to ground improvement construction[J]. Chinese Journal of Underground Space and Engineering,2023,19(3):1001 − 1008. (in Chinese with English abstract)
WU Fengyuan, XU Yongfu. Identification method of soft soil disaster due to ground improvement construction[J]. Chinese Journal of Underground Space and Engineering, 2023, 19（3）: 1001 − 1008. （in Chinese with English abstract） [3] 何志超,徐永福. 长江漫滩沉积软土地基处理施工灾变机制[J]. 工程地质学报,2023,31(6):2082 − 2092. [HE Zhichao,XU Yongfu. Disaster mechanism of soft soils in Yangtze River floodplain due to DCM construction[J]. Journal of Engineering Geology,2023,31(6):2082 − 2092. (in Chinese with English abstract)
HE Zhichao, XU Yongfu. Disaster mechanism of soft soils in Yangtze River floodplain due to DCM construction[J]. Journal of Engineering Geology, 2023, 31（6）: 2082 − 2092. （in Chinese with English abstract）
[4] 徐永福. 粉体搅拌桩下沉原因分析及其对策[J]. 建筑技术,2000,31 (3):171 − 172. [XU Yongfu. Settlement cause analysis of cement mixing pile and the solution thereof[J]. Architecture Technology,2000,31 (3):171 − 172. (in Chinese)
XU Yongfu. Settlement cause analysis of cement mixing pile and the solution thereof[J]. Architecture Technology, 2000, 31 （3）: 171 − 172. （in Chinese） [5] 潘涛. 软土地区双线区间盾构隧道施工对周边地表以及建筑物沉降的影响[J]. 水文地质工程地质,2022,49(1):101 − 108. [PAN Tao. Influences of double-track shield tunnel construction on settlements of adjacent ground and buildings in a soft soil area[J]. Hydrogeology & Engineering Geology,2022,49(1):101 − 108. (in Chinese with English abstract) doi: 10.16030/j.cnki.issn.1000-3665.202106014
PAN Tao . Influences of double-track shield tunnel construction on settlements of adjacent ground and buildings in a soft soil area[J]. Hydrogeology & Engineering Geology,2022 ,49 （1 ）:101 −108 . （in Chinese with English abstract）[6] 邱明明,杨果林,张沛然,等. 浅埋洞口段黄土公路隧道施工变形性状现场测试研究[J]. 水文地质工程地质,2021,48(3):135 − 143. [QIU Mingming,YANG Guolin,ZHANG Peiran,et al. Field test on the construction deformation characteristics for a loess highway tunnel at the shallow portal section[J]. Hydrogeology & Engineering Geology,2021,48(3):135 − 143. (in Chinese with English abstract)
QIU Mingming, YANG Guolin, ZHANG Peiran, et al. Field test on the construction deformation characteristics for a loess highway tunnel at the shallow portal section[J]. Hydrogeology & Engineering Geology, 2021, 48（3）: 135 − 143. （in Chinese with English abstract） [7] 徐永福,王驰,黄铭,等. 湿喷桩施工中饱和粉土的触变性研究[J]. 岩土工程学报,2013,35(10):1784 − 1789. [XU Yongfu,WANG Chi,HUANG Ming,et al. Thixotropy of saturated silty soils due to construction of DCM columns[J]. Chinese Journal of Geotechnical Engineering,2013,35(10):1784 − 1789. (in Chinese with English abstract)
XU Yongfu, WANG Chi, HUANG Ming, et al . Thixotropy of saturated silty soils due to construction of DCM columns[J]. Chinese Journal of Geotechnical Engineering,2013 ,35 （10 ）:1784 −1789 . （in Chinese with English abstract）[8] XU Yongfu,SUN De’an,SUN Jun,et al. Soil disturbance of Shanghai silty clay during EPB tunneling[J]. Tunnelling & Underground Space Technology,2003,18(5):537 − 545.
[9] 叶俊能,周晔,朱瑶宏,等. 竹节桩复合地基沉桩施工超孔隙水压力研究[J]. 水文地质工程地质,2019,46(1):103 − 110. [YE Junneng,ZHOU Ye,ZHU Yaohong,et al. A study of the excess pore water pressure during pile-sinking construction of nodular pile composite foundation[J]. Hydrogeology & Engineering Geology,2019,46(1):103 − 110. (in Chinese with English abstract)
YE Junneng, ZHOU Ye, ZHU Yaohong, et al. A study of the excess pore water pressure during pile-sinking construction of nodular pile composite foundation[J]. Hydrogeology & Engineering Geology, 2019, 46（1）: 103 − 110. （in Chinese with English abstract） [10] 孙钧. 城市环境土工学[M]. 上海:上海科学技术出版社,2005. [SUN Jun. Urban Environmental Geotechnics [M]. Shanghai:Shanghai Science and Technology Press,2005. (in Chinese)
SUN Jun. Urban Environmental Geotechnics [M]. Shanghai: Shanghai Science and Technology Press, 2005. （in Chinese） [11] 蒋顺强,陶涛,秦长国,等. 路基填筑和碾压对桥台土压力分布的影响研究[J]. 中外公路,2015,35(2):33 − 37. [JIANG Shunqiang,TAO Tao,QIN Changguo,et al. Research on influence of subgrade filling and rolling on abutment earth pressure distribution[J]. Journal of China and Foreign Highway,2015,35(2):33 − 37. (in Chinese)
JIANG Shunqiang, TAO Tao, QIN Changguo, et al . Research on influence of subgrade filling and rolling on abutment earth pressure distribution[J]. Journal of China and Foreign Highway,2015 ,35 （2 ）:33 −37 . （in Chinese）[12] 张红,秦文达,张海凤,等. 联络线施工对邻近线路基扰动影响[J]. 高速铁路技术,2021,12(1):35 − 40. [ZHANG Hong,QIN Wenda,ZHANG Haifeng,et al. Disturbance of construction of connecting line to earthworks of adjacent lines[J]. High Speed Railway Technology,2021,12(1):35 − 40. (in Chinese with English abstract)
ZHANG Hong, QIN Wenda, ZHANG Haifeng, et al . Disturbance of construction of connecting line to earthworks of adjacent lines[J]. High Speed Railway Technology,2021 ,12 （1 ）:35 −40 . （in Chinese with English abstract）[13] 武孝天,李洪涛,徐永福. 双向搅拌桩施工对桩周土体扰动分析[J]. 长江科学院院报,2020,37(5):127 − 132. [WU Xiaotian,LI Hongtao,XU Yongfu. Soil disturbance around piles by bidirectional mixing columns construction[J]. Journal of Yangtze River Scientific Research Institute,2020,37(5):127 − 132. (in Chinese with English abstract)
WU Xiaotian, LI Hongtao, XU Yongfu . Soil disturbance around piles by bidirectional mixing columns construction[J]. Journal of Yangtze River Scientific Research Institute,2020 ,37 （5 ）:127 −132 . （in Chinese with English abstract）[14] 邓永锋,刘松玉,洪振舜. 水泥土搅拌桩施工扰动评价的一种方法[J]. 岩土力学,2009,3:717 − 721. [DENG Yongfeng,LIU Songyu,HONG Zhenshun. Disturbance degree of surrounding soil induced by deep mixing column installation[J]. Rock and Soil Mechanics,2009,3:717 − 721. (in Chinese with English abstract)
DENG Yongfeng, LIU Songyu, HONG Zhenshun. Disturbance degree of surrounding soil induced by deep mixing column installation[J]. Rock and Soil Mechanics, 2009, 3: 717 − 721. （in Chinese with English abstract） [15] 魏海涛,蔡智. 施工顺序对软土地坪复合地基的影响探讨[J]. 岩土工程技术,2021,35(1):12 − 15. [WEI Haitao,CAI Zhi. Discussion on influence of construction sequence on soft ground composite foundation[J]. Geotechnical Engineering Technique,2021,35(1):12 − 15. (in Chinese with English abstract)
WEI Haitao, CAI Zhi . Discussion on influence of construction sequence on soft ground composite foundation[J]. Geotechnical Engineering Technique,2021 ,35 （1 ）:12 −15 . （in Chinese with English abstract）[16] 石舒. 隔离桩施工对邻近高铁高架桥桩基的变形影响分析[J]. 世界桥梁,2012,40(5):54 − 58. [SHI Shu. A analysis of influence of isolation pile construction on deformation of pile foundation of adjacent high speed railway viaduct[J]. World Bridge,2012,40(5):54 − 58. (in Chinese with English abstract)
SHI Shu . A analysis of influence of isolation pile construction on deformation of pile foundation of adjacent high speed railway viaduct[J]. World Bridge,2012 ,40 （5 ）:54 −58 . （in Chinese with English abstract）[17] 卞荣,龙月,贺雷,等. 桩基施工对邻近顶管隧道的扰动影响[J]. 科学技术与工程,2021,21(18):7551 − 7557. [BIAN Rong,LONG Yue,HE Lei,et al. The disturbance influence of pile foundation construction on adjacent pipe jacking tunnel[J]. Science Technology and Engineering,2021,21(18):7551 − 7557. (in Chinese with English abstract) doi: 10.3969/j.issn.1671-1815.2021.18.022
BIAN Rong, LONG Yue, HE Lei, et al . The disturbance influence of pile foundation construction on adjacent pipe jacking tunnel[J]. Science Technology and Engineering,2021 ,21 （18 ）:7551 −7557 . （in Chinese with English abstract）[18] 上海铁路局. 上海铁路局工务安全管理办法:SHG/GW 280—2017[R]. 上海:上海铁路局,2017. [Shanghai Railway Bureau. Administrative Measures for public works safety of Shanghai Railway administration:SHG/GW 280—2017[R]. Shanghai:Shanghai Railway Bureau,2017.(in Chinese)
Shanghai Railway Bureau. Administrative Measures for public works safety of Shanghai Railway administration: SHG/GW 280—2017[R]. Shanghai: Shanghai Railway Bureau, 2017.（in Chinese） [19] 上海铁路局. 上海铁路局高速铁路运营期变形监测管理实施细则:SHG/GW277—2016[S]. 上海:上海铁路局,2016. [Shanghai Railway Bureau. Detailed Rules for the management and implementation of deformation monitoring during the operation period of Shanghai Railway administration:SHG/GW277—2016)[S]. Shanghai:Shanghai Railway Bureau,2016. (in Chinese)
Shanghai Railway Bureau. Detailed Rules for the management and implementation of deformation monitoring during the operation period of Shanghai Railway administration: SHG/GW277—2016）[S]. Shanghai: Shanghai Railway Bureau, 2016. （in Chinese） [20] 徐永福,傅德明. 结构性软土中打桩引起的超孔隙水压力[J]. 岩土力学,2000,21(1):53 − 55. [XU Yongfu,FU Deming. Excess pore pressure induced in piling in saturated structural soft soils[J]. Rock and Soil Mechanics,2000,21(1):53 − 55. (in Chinese with English abstract)
XU Yongfu, FU Deming. Excess pore pressure induced in piling in saturated structural soft soils[J]. Rock and Soil Mechanics, 2000, 21（1）: 53 − 55. （in Chinese with English abstract） -
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