| 中小尺寸竖井圆形地下连续墙的施工监测与数值分析 |
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| 引用本文： | 董琼英1,肖尊群1,汤东桑2,邓 震3,曹童童1. 中小尺寸竖井圆形地下连续墙的施工监测与数值分析[J]. 武汉工程大学学报, 2020, 42(5): 552-557. DOI: 10.19843/j.cnki.CN42-1779/TQ.201903033 |
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| 作者姓名： | 董琼英1 肖尊群1 汤东桑2 邓 震3 曹童童1 |
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| 作者单位： | 1. 武汉工程大学兴发矿业学院，湖北 武汉 430074；2. 武汉建工集团股份有限公司，湖北 武汉 430056；3. 中油管道防腐工程有限责任公司，河北 廊坊 065001 |
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| 摘 要： | 基于工程实例，对中小尺寸圆形地下连续墙的施工过程中墙体应力、钢筋应力、墙侧土体压力等参数监测并进行分析。采用有限元软件Abaqus建立该竖井施工过程的数值模型，研究结果表明:中小尺寸圆形地下连续墙纵向截面不存在明显的受拉区和受压区，整个墙体表现为受压状态。同时，墙体的入土深度对墙体水平位移、墙侧土压力的影响很小。中小尺寸圆形地下连续墙结构设计不需要采用传统的竖向弹性地基梁法确定结构配筋和入土深度。由于墙体自稳性强、刚度高，顺做法与逆作法的弯矩与剪力相似，在保证安全的状况下，可使用顺作法施工提高施工速度。
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| 关 键 词： | 圆形地下连续墙 有限元 入土深度 土压力 竖向弹性地基梁法 |
Construction Monitoring and Numerical Analysis of Circular Underground Diaphragm Wall with Small and Medium-Sized Shafts |
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| DONG Qiongying1,XIAO Zunqun1,TANG Dongsang2,DENG Zhen3,CAO Tongtong1. Construction Monitoring and Numerical Analysis of Circular Underground Diaphragm Wall with Small and Medium-Sized Shafts[J]. Journal of Wuhan Institute of Chemical Technology, 2020, 42(5): 552-557. DOI: 10.19843/j.cnki.CN42-1779/TQ.201903033 |
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| Authors: | DONG Qiongying1 XIAO Zunqun1 TANG Dongsang2 DENG Zhen3 CAO Tongtong1 |
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| Affiliation: | 1. School of Xingfa Mine Technology，Wuhan Institute of Technology，Wuhan 430074，China；2. Wuhan Construction Engineering Group Co.，Ltd，Wuhan 430056，China；3. China Petroleum Pipeline Anti-Corrosion Engineering Co.，Ltd，Langfang 065001，China |
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| Abstract: | Taking engineering as examples，we monitored and analyzed the stresses of wall，reinforcement，and soil pressure on the wall side during the construction of circular underground diaphragm walls with small and medium-sized shafts （CUDWMSS）. The finite element software Abaqus was used to establish the numerical model of the construction process of the shaft. Research indicates that there is no obvious tensile or compression zone on the longitudinal section of the CUDWMSS，and the whole wall is under compression. In addition，the buried depth of the wall has little effect on the horizontal displacement and the soil pressure on the side of wall. The structural design of the CUDWMSS does not require the traditional vertical elastic foundation beam method to determine the structural reinforcement and the burial depth of wall. Due to the strong self-stabilization and high rigidity of the wall，the bending moment and shear with bottom-up or top-down construction method are similar. Under the safe circumstances，the bottom-up construction method can speed up the construction. |
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| Keywords: | circular underground diaphragm wall finite element buried depth soil pressure vertical elastic foundation beam method |
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