Experimental Research on Pile-Forming Effect of Improved Marine Silt Mixing Pile

TANG Changyi; LIU Wenxian; WU Zhangping; CHEN Huijin; ZHOU Meng

doi:10.13204/j.gyjzG21061905

Volume 52 Issue 6

Sep. 2022

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Article Navigation > INDUSTRIAL CONSTRUCTION > 2022 > 52(6): 156-161,70

TANG Changyi, LIU Wenxian, WU Zhangping, CHEN Huijin, ZHOU Meng. Experimental Research on Pile-Forming Effect of Improved Marine Silt Mixing Pile[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(6): 156-161,70. doi: 10.13204/j.gyjzG21061905

Citation:

TANG Changyi, LIU Wenxian, WU Zhangping, CHEN Huijin, ZHOU Meng. Experimental Research on Pile-Forming Effect of Improved Marine Silt Mixing Pile[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(6): 156-161,70. doi: 10.13204/j.gyjzG21061905

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Experimental Research on Pile-Forming Effect of Improved Marine Silt Mixing Pile

doi: 10.13204/j.gyjzG21061905

1. Zhuhai Institute of Urban Planning Design, Zhuhai 519000, China;
2. Wuhan Qiancheng Pile Engineering Science and Technology Company Limited, Wuhan 430000, China;
3. China Fortune Land Industrial New Town Development Company limited, Zhuhai 519000, China;
4. Central Research Institute of Building and Construction Co., Ltd., MCC Group, Beijing 100088, China;
5. Tsinghua University, Beijing 100084, China

Received Date: 2021-06-19
Available Online: 2022-09-05

Abstract

Abstract

In-situ test piling is an effective method to reasonably determine the construction technology and the dosage of curing agent, and to evaluate the effect of piling formation. In order to explore the pile-forming effect and applicability of the new drilling bits and the new curing agent for strengthening marine silt, relying on a municipal road project in Doumen District of Zhuhai City, aiming at the properties of marine silt soft soil, both the unconfined compressive strength test (UCS) and direct shear strength test (DST) were conducted to explore the effects of the pile-forming effect with different drill bits and different curing agent dosages.The results showed that the improved drilling bit adopted the construction technology of twice mix for two spraying was more effective, which could save half the construction period. The pile integrity of new curing agent was better than that of pure cement curing agent using the same bit. It was found that the unconfined compressive strength and direct shear strength reduced by RQD value were more suitable for engineering construction. Besides, direct shear strength could take 40% of the unconfined compressive strength.
- mixing pile,
- marine silt,
- new drilling bits,
- new curing agent,
- pile-forming effect

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References

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