| 杭州狭长软土基坑支护侧移规律与解析预测方法研究 |
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| 引用本文： | 马元,刘亚竞,侯永茂,王立忠,洪义.杭州狭长软土基坑支护侧移规律与解析预测方法研究[J].隧道建设,2019,39(11):1797. |
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| 作者姓名： | 马元 刘亚竞 侯永茂 王立忠 洪义 |
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| 作者单位： | (1. 上海隧道工程有限公司， 上海 200082； 2. 浙江大学建筑工程学院， 浙江 杭州 310058； 3. 浙江大学 浙江省海洋岩土工程与材料重点试验室， 浙江 杭州 310058) |
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| 基金项目： | 浙江省自然科学基金资助项目（LQ18E080004）； 上海市青年科技启明星计划（16QB1403400） |
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| 摘 要： | In order to reduce the influence of deep narrow foundation pit construction on adjacent properties in urban area in Hangzhou, the characteristics of the support wall lateral deflection are analyzed and the corresponding analytical prediction method is proposed. The support wall lateral deflections of the deep narrow foundation pits at Wenyi West Road, Qingchun Station, Qiutao Station, Xingtang Station and Qingnian Station in Hangzhou soft clay are monitored and compared with those of deep foundation pits in Zhejiang and deep narrow foundation pits in Shanghai, Taipei and Singapore. The results show that the maximum support wall lateral deflection of the foundation pit on Wenyi West Road, 0.20%He ~0.25%He, where He is the maximum excavation depth, is close to that in Shanghai(0.15%He~0.41% He), but is smaller than those in Zhejiang, Taipei and Singapore(0.27% He~0.62% He); which is related to the high tangential modulus of Hangzhou soil and small width of the foundation pit. The support wall lateral deflection of the narrow deep foundation pits in Hangzhou can be precisely predicted based on the representative stress strain relationship at site and the modified mobilisable strength design (MMSD) method.
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| 关 键 词： | 杭州软土地区 狭长深基坑 支护侧移 修正强度发挥解析预测理论 |
| 收稿时间： | 2019-06-24 |
Support Wall Lateral Deflection Rule and Prediction of Deep Narrow Foundation in Hangzhou Soft Clay |
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| MA Yuan,LIU Yajing,HOU Yongmao,WANG Lizhong,HONG Yi.Support Wall Lateral Deflection Rule and Prediction of Deep Narrow Foundation in Hangzhou Soft Clay[J].Tunnel Construction,2019,39(11):1797. |
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| Authors: | MA Yuan LIU Yajing HOU Yongmao WANG Lizhong HONG Yi |
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| Institution: | (1. Shanghai Tunnel Engineering Co., Ltd., Shanghai 200082, China; 2. College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, Zhejiang, China; 3. Key Laboratory of Offshore Geotechnics and Material of Zhejiang Province, Zhejiang University, Hangzhou 310058, Zhejiang, China) |
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| Abstract: | In order to reduce the influence of deep narrow foundation pit construction on adjacent properties in urban area in Hangzhou, the characteristics of the support wall lateral deflection are analyzed and the corresponding analytical prediction method is proposed. The support wall lateral deflections of the deep narrow foundation pits at Wenyi West Road, Qingchun Station, Qiutao Station, Xingtang Station and Qingnian Station in Hangzhou soft clay are monitored and compared with those of deep foundation pits in Zhejiang and deep narrow foundation pits in Shanghai, Taipei and Singapore. The results show that the maximum support wall lateral deflection of the foundation pit on Wenyi West Road, 0.20%He ~0.25%He, where He is the maximum excavation depth, is close to that in Shanghai(0.15%He~0.41% He), but is smaller than those in Zhejiang, Taipei and Singapore(0.27% He~0.62% He); which is related to the high tangential modulus of Hangzhou soil and small width of the foundation pit. The support wall lateral deflection of the narrow deep foundation pits in Hangzhou can be precisely predicted based on the representative stress strain relationship at site and the modified mobilisable strength design (MMSD) method. |
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| Keywords: | Hangzhou soft clay area deep narrow foundation pit support wall lateral deflection modified mobilisable strength design (MMSD) method |
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