基于3D打印的锁口钢管桩围护结构变形特性试验研究

doi:10.13722/j.cnki.jrme.2020.0398

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Abstract Locking steel pipe pile has advantages of quick construction efficiency and recycle utilization. Nowadays，it is widely used as a retaining structure in excavation engineering. Non-inner supported excavation with locking steel pipe pile retaining structure similar model test was carried out to investigate the deformation characteristics of locking steel pipe pile. To simulate the structural characteristics of locking steel pipe pile，three dimensional(3D) printing technology was creatively applied to manufacture locking steel pipe pile by using Somos? Taurus as printing base material. The similar excavation model test with locking steel pipe pile retaining structure was conducted in dry sand and the soils were filled using rain fall method. The excavation from initial state to retaining structure failure was simulated by manual excavation. The lateral displacement at the pile top，ground surface settlements and the bending moment of the piles were continuously measured during the whole process of excavation. The lateral deflection of model pile was back-analyzed using pile shaft strains. The testing results shown that the 3D printing technology can rapidly and accurately manufacture locking steel pipe model piles，which meet the model test requirement perfectly. The deformation of locking steel pipe pile and the ground surface settlement increased with excavation depth，the deflection of model pile was similar as cantilever beam subjected to distributed load. When excavation depth varies from shallow depth to structure failure，both of positive bending moment in model pile and the lateral displacement in pile top increased nonlinearly. However，the positions of maximum positive bending moment maintain range from 30–35 cm below the excavation face. As a retaining structure，the locking steel pipe piles possess a good integrality. The shear failure did not occur in the pile shaft when the retaining structure reached failure state. In non-inner supported retaining structure，the locking steel pipe pile was flexible structure and its safe installation ratio was suggested from 1.8 to 2.5，which was greater than the other rigid retaining structures.

Key words： excavation engineering locking steel pipe pile 3D printing technology model tests retaining structure

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	Articles by authors
	WEI Shi1
	DENG Chenglong1
	LIANG Rongzhu1
	2
	WANG Xinxin3
	WU Xiaojian1
	3
	SUN Lianwei3

Cite this article:

WEI Shi1,DENG Chenglong1,LIANG Rongzhu1, et al. Model testing on deformation characteristics of the locking steel pipe pile retaining structure by using 3D printing[J]. , 2020, 39(S2): 3676-3686.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2020.0398 OR https://rockmech.whrsm.ac.cn/EN/Y2020/V39/IS2/3676

[1] KIMURA M，ARAP J K T，ISOBE K，et al. Offshore construction of bulkhead waste facilities by H-joint steel pipe sheet piles[C]// Proceedings of the BGA International Conference on Foundations，Innovations，Observations，Design and Practice. [S. l.]：Authors and Thomas Telford Limited，2003：443–452. [2] INAZUMI S，KIMURA M，KAMON M，et al. Impermeable properties of H-jointed steel pipe sheet piles with H-H joints[J]. Journal of the Society of Materials Science，Japan，2008，57(1)：50– 55. [3] 毕孝全，喻良明，赵明伦. 超前钢管桩在深基坑支护中的应用[J].岩土工程学报，2006，28(增1)：1 756–1 759.(BI Xiaoquan，YU Liangming，ZHAO Minglun. Application of front steel tube stakes in supporting deep pits[J]. Chinese Journal of Geotechnical Engineering，2006，28(Supp.1)：1 756–1 759.(in Chinese)) [4] 刘小丽，李白. 微型钢管桩用于岩石基坑支护的作用机制分析[J].岩土力学，2012，33(增1)：217–222.(LIU Xiaoli，LI Bai. Analysis of supporting mechanism of micro-steel-pipe piles in rock foundation pit[J]. Rock and Soil Mechanics，2012，33(Supp.1)：217–222.(in Chinese)) [5] 向波，马建林，何云勇，等. 微型钢管排桩支挡结构原型试验研究[J]. 岩土工程学报，2013，35(11)：2 131–2 138.(XIANG Bo，MA Jianlin，HE Yunyong，et al. Prototype tests on micro-steel pipe piles as retaining structures[J]. Chinese Journal of Geotechnical Engineering，2013，35(11)：2 131–2 138.(in Chinese)) [6] 王硕. 填海造陆地区钢管桩支护深基坑变形特性研究[硕士学位论文][D]. 石家庄：石家庄铁道学院，2010.(WANG Shuo. Deformation- property study of deep excavation supported by steel pipe sheet pile in sea reclamation areas[M. S. Thesis][D]. Shijiazhuang：Shijiazhuang Tiedao University，2010.(in Chinese)) [7] 王硕，杨彦军，岳祖润. 锁口钢管桩抗弯刚度折减行为及其影响因素分析[J]. 中南大学学报：自然科学版，2013，44(4)：1 551– 1 556.(WANG Shuo，YANG Yanjun，YUE Zurun. Analysis of reduced modulus action and influence factors in steel pipe sheet piles[J]. Journal of Central South University：Science and Technology，2013，44(4)：1 551–1 556.(in Chinese)) [8] 师毓嵩. 微型钢管桩复合土钉墙模型试验及支护设计研究[硕士学位论文][D]. 南昌：南昌大学，2015.(SHI Yusong. Study the model test and the design method of Miniature steel pipe piles composite soil nailing wall[M. S. Thesis][D]. Nanchang：Nanchang University，2015.(in Chinese)) [9] 李智. 钢管桩基坑支护稳定性模型试验及数值模拟[硕士学位论文][D]. 徐州：中国矿业大学，2017.(LI Zhi. Experimental investigation and numerical simulation of stability of foundation pit supported by steel pipe pile[M. S. Thesis][D]. Xuzhou：China University of Mining and Technology，2017.(in Chinese)) [10] 徐挺. 相似理论与模型试验[M]. 北京：中国农业机械出版社, 1982：14–28.(XU Ting. The similarity theory and the model test[M]. Beijing：China Agricultural Mechanical Press，1982：14–28.(in Chinese)) [11] 黄大维，周顺华，冯青松，等. 盾构隧道与地层相互作用的模型试验设计[J]. 铁道学报，2018，40(6)：127–135.(HUANG Dawei，ZHOU Shunhua，FENG Qingsong，et al. Scaled model test design for interaction between shield tunnel and stratum[J]. Journal of the China Railway Society，2018，40(6)：127–135.(in Chinese)) [12] MOLINS C，ARNAU O. Experimental and analytical study of the structural response of segmental tunnel linings based on an insitu loading test. Part 1：Test configuration and execution[J]. Tunnelling and Underground Space Technology，2011，26(6)：764–777. [13] 鲍跃全，李惠. 人工智能时代的土木工程[J]. 土木工程学报，2019，52(5)：1–11.(BAO Yuequan，LI Hui. Artificial intelligence for civil engineering[J]. China Journal of Civil Engineering，2019，52(5)：1–11.(in Chinese)) [14] 肖维民，黄巍，丁蜜，等. 基于3D打印技术的模拟柱状节理岩体试样制备方法[J]. 岩土工程学报，2018，40(增2)：256–260. (XIAO Weimin，HUANG Wei，DING Mi，et al. Method for preparing artificial columnar jointed rock mass specimens by using 3D printing technology[J]. Chinese Journal of Geotechnical Engineering，2018，40(Supp.2)：256–260.(in Chinese)) [15] 中华人民共和国国家标准编写组. GB/T 50123—2019 土工试验方法标准[S]. 北京：中国计划出版社，2019.(The National Standards Compilation Group of People?s Republic of China. GB/T 50123—2019 Standard for geotechnical testing method[S]. Beijing：China Planning Press，2019.(in Chinese)) [16] 刘国彬，王卫东. 基坑工程手册[M]. 北京：中国建筑工业出版社，2010：48–50.(LIU Guobin，WANG Weidong. Deep excavations engineering handbook[M]. Beijing：China Architecture and Building Press，2010：48–50.(in Chinese)) [17] OU C Y，HSIEH P G，CHIOU D C. Characteristics of ground surface settlement during excavation[J]. Canadian Geotechnical Journal，1993，30(5)：758–767. [18] MANA A I，CLOUGH G W. Prediction of movements for braced cuts in clay[J]. Geotechnical Special Publication，2002，107(118)：1 840– 1 858. [19] 林鹏. 基于板桩墙支护的基坑开挖模型试验的三维数值分析及变形预测[硕士学位论文][D]. 南昌：华东交通大学，2008.(LIN Peng. Base on 3D numerical analysis of the sheet pile wall supporting model and deformation predicting for deep foundation pit[M. S. Thesis][D]. Nanchang：East China Jiaotong University，2008.(in Chinese)) [20] 裴华富，殷建华，朱鸿鹄，等. 基于光纤光栅传感技术的边坡原位测斜及稳定性评估方法[J]. 岩石力学与工程学报，2010，29(8)： 1 570–1 576.(PEI Huafu，YIN Jianhua，ZHU Honghu，et al. Insitu monitoring of displacements and stability evaluation of slope based on Fiber Bragg Grating sensing technology[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(8)：1 570–1 576.(in Chinese))