2023 Vol. 37, No. 5

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2023, 37(5): 1-1.
[Abstract](72) [FullText HTML] (21) [PDF 4670KB](34)
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2023, 37(5): 1-3.
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Technology Development and Exploration
Discussion on the Development of Drilling Techniques for Engineering Investigation
Wen Jiwei, Liu Xinghong, Bai Kunxiao, Zhang Yingxu, Xiang Tian, Hu Ping
2023, 37(5): 505-517. doi: 10.3969/j.issn.1007-2993.2023.05.001
[Abstract](729) [FullText HTML] (100) [PDF 4803KB](161) [Cited by] (3)
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The drilling techniques involved in engineering investigation were systematically summarized, including soil sampler and coring drill, in-situ testing techniques, high-efficient drilling coring (sampling) techniques and joint investigation techniques, and their characteristics were combed, compared ...
Analysis of Slope Stability and Treatment Measures for a Highway in Southern Shaanxi
Shi Jing, Zhang Hao, Zhao Xin, Fan Hongying
2023, 37(5): 518-523. doi: 10.3969/j.issn.1007-2993.2023.05.002
[Abstract](270) [FullText HTML] (59) [PDF 4794KB](85) [Cited by] (3)
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A typical third level slope in the southern Shaanxi region experienced large-scale collapse during treatment construction. Failure to timely protect after excavation was the direct cause of slope instability, while continuous heavy rainfall in autumn was the indirect cause of slope collapse. The str...
Short-term Undrained Analysis of Passive Instability of Shield Tunnel Excavation Face
Wang Haifeng, Kang Bo, Li Pengfei, Liu Zenghui, Di Qiguang, Chen Keyi
2023, 37(5): 524-531. doi: 10.3969/j.issn.1007-2993.2023.05.003
[Abstract](191) [FullText HTML] (58) [PDF 1358KB](38)
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The construction environment of shield tunnel becomes more and more complex. However, there are few researches on passive instability failure modes of shield tunnel excavation face in water-rich clay stratum. A theoretical model of passive instability failure of shield excavation face under undraine...
Research on Axial Force Prediction of Bolt in TBM Headrace Tunnel Based on ACO-SVM
Wang Jian, Wang Liming, Zhou Zhenliang, Lu Wenjia, Mao Peiliang
2023, 37(5): 532-537. doi: 10.3969/j.issn.1007-2993.2023.05.004
[Abstract](190) [FullText HTML] (82) [PDF 2324KB](28)
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Based on the monitoring data of anchor axial force in Ka-Shuang tunnel of Xinjiang YEGS water conveyance project, the change trend of anchor axial force were forecasted and analyzed through ant colony algorithm (ACO) and particle swarm optimization (PSO) to optimize the support vector machine (SVM) ...
Research on Pile Settlement Caused by Large-area Disorderly Soil Stacking
Zhang Nan, Wu Yue, Liu Yongchao, Zhang Zongjun, Han Yutao, Lu Hongyu
2023, 37(5): 538-544. doi: 10.3969/j.issn.1007-2993.2023.05.005
[Abstract](126) [FullText HTML] (47) [PDF 3960KB](35)
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A large-scale construction project needs to mound soil over a large area on the constructed foundation pile due to the change of excavation conditions. Large-area mounded soil will cause the settlement of group foundation piles. After the excavation of foundation trench, the settlement of foundation...
Study on Comprehensive Treatment of Geotechnical Engineering in a Site Area
Zhang Liqian, Tian Yibin, Yan Jing, Li Bing, Meng Liang
2023, 37(5): 545-552. doi: 10.3969/j.issn.1007-2993.2023.05.006
[Abstract](131) [FullText HTML] (45) [PDF 4965KB](35) [Cited by] (1)
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A site is located in the deep V-shaped valley between the north-south ridges on both sides. It faces stability of high slopes on both sides of the south and north and flood control in the east valley. The geotechnical problems on the three sides are coupled and progressive in time and space, and the...
An Example of Foundation Pile Design under Settlement Control
Zhang Wu, Yao Xiaoxu, Zhang Bo, Guo Zhe
2023, 37(5): 553-558. doi: 10.3969/j.issn.1007-2993.2023.05.007
[Abstract](90) [FullText HTML] (44) [PDF 1571KB](32) [Cited by] (1)
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Through an engineering example of optimal design of track pile foundation of a container terminal in West Africa, the displacement of pile top under load was estimated by comparing the current Chinese code method with the vertical compressive stiffness method of single pile. The engineering example ...
Risk Assessment Method of Internal Support Structure and Feasibility Study of Dismantling the Support
Yin Aiyue, Lu Zhuo, Wang Xubo, Wei Huanwei, Wang Jiekun, Zheng Xiao
2023, 37(5): 559-566. doi: 10.3969/j.issn.1007-2993.2023.05.008
[Abstract](121) [FullText HTML] (40) [PDF 3313KB](30) [Cited by] (3)
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The study of risk assessment methods of internal support structures, which are widely used in the construction of deep foundation pit projects, can timely discover the risks existing in the construction process and effectively reduce the probability of engineering accidents. Starting from the actual...
Monitoring and Analysis of Structural Deformation During Subway Station Construction Interval under Soft Soil-bedrock Conditions
Ke Lei, Li Hong, Liu Kun, Chen Mingyin
2023, 37(5): 567-573. doi: 10.3969/j.issn.1007-2993.2023.05.009
[Abstract](118) [FullText HTML] (34) [PDF 3488KB](23) [Cited by] (3)
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There are insufficient researches on the structural deformation monitoring and evaluation of subway stations during construction intervals under the condition of soft soil-bedrock. The fiber Bragg grating sensing technology was applied in the structural deformation monitoring research during the con...
Study on Selection of Road Soft Foundation Treatment Scheme
He Changming, Li Jun
2023, 37(5): 574-580. doi: 10.3969/j.issn.1007-2993.2023.05.010
[Abstract](105) [FullText HTML] (30) [PDF 551KB](35) [Cited by] (5)
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The quality of road soft foundation treatment directly affects the driving safety and comfort. To determine an economic, reasonable and environmental friendly soft foundation treatment scheme is the key to the success or failure of road soft foundation treatment. The technical feasibility analysis i...
Matter Element Evaluation of Foundation Pit Safety Based on Game Theory Combination Weighting
Su Zhengkai, Zhang Kunyong, Li Fudong, Jian Yongzhou
2023, 37(5): 581-589. doi: 10.3969/j.issn.1007-2993.2023.05.011
[Abstract](96) [FullText HTML] (41) [PDF 1965KB](24) [Cited by] (5)
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The scale of excavation projects is progressively increasing, accompanied by a growing number of factors influencing their safety status. To accurately assess the safety status of excavation projects using commonly available monitoring data, the matter-element extension model, typically used for eva...
Analysis of Structural Internal Force and Settlement on Nonlinear Elastic Foundation Based on Compression Curve
Gao Xinghe, Zhang Feng, Lv Ben, Li Can
2023, 37(5): 590-594. doi: 10.3969/j.issn.1007-2993.2023.05.012
[Abstract](89) [FullText HTML] (35) [PDF 819KB](30)
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Foundation settlement is not only harmful to buildings, but also one of the main factors affecting the stress and deformation of superstructure. The layerwise summation method used in engineering settlement calculation takes the compression curve (e-p curve or e-lgp curve) as the input, which better...
Experimental Research
Field Experimental Study on Compaction Performance of Impervious Soil Material in High Altitude Borrow of an Ultra-high Earth-rockfill Dam
Zheng Xing, Ao Dahua, Zhang Sheng, Wei Weiqiong, Yang Wenchao, Xu Yongwang
2023, 37(5): 595-601. doi: 10.3969/j.issn.1007-2993.2023.05.013
[Abstract](126) [FullText HTML] (56) [PDF 1009KB](20) [Cited by] (1)
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An impervious soil material borrow of an ultra-high earth rock dam is located at an altitude of 3500 m. In-site compaction test of soil was carried out at this elevation. The tests include the selection of compaction parameters, the influence of variable moisture content on soil compaction character...
Experimental Study on Freeze-thaw Cycle of Collapsible Loess Red Sandstone Integrated Cement Soil Filling Material
Jin Shenglian, Yang Zuoqing, Zhang Xin, Zeng Haizhen, Zhu Yanpeng
2023, 37(5): 602-608. doi: 10.3969/j.issn.1007-2993.2023.05.014
[Abstract](82) [FullText HTML] (32) [PDF 1411KB](13)
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In the collapsible loess area, the backfill area of the foundation trough often produces a large area of settlement due to the self-subsidence and collapsibility of backfill, which has a severe impact on the regular use of buildings and the everyday life of residents. According to the regional engin...
Deterioration Characteristics of High-fill Loess Shear Strength under Freeze-thaw
Sun Jielong, Wang Hongqi, Li Shengbin, Li Dawei, Qiu Mingming
2023, 37(5): 609-613. doi: 10.3969/j.issn.1007-2993.2023.05.015
[Abstract](96) [FullText HTML] (29) [PDF 1524KB](21)
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Taking the high-fill loess in Yan'an New Area as an example, the experimental study on the shear strength of high-fill loess under freeze-thaw action was carried out, and the influence of freeze-thaw action on shear strength index of high-fill loess and its deterioration characteristics were analyze...
Study on the Effect of Drying and Wetting Cycles on the Crack Evolution and Strength of Expansive Mudstone
Song Lei, Zhang Rongkuan, Tang Yong
2023, 37(5): 614-617. doi: 10.3969/j.issn.1007-2993.2023.05.016
[Abstract](166) [FullText HTML] (74) [PDF 1004KB](19) [Cited by] (2)
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Based on the indoor drying and wetting cycles test of the undisturbed expansive mudstone in a water conservancy project in Hefei area, the crack images of expansive mudstone under different times of drying and wetting cycles were analyzed, and the direct shear test was carried out. The results show ...
Experimental Study on Micro-macro Shear Properties of Sand Considering Particle Size
Wang Bo, Lv Guo, Li Jiang
2023, 37(5): 618-622. doi: 10.3969/j.issn.1007-2993.2023.05.017
[Abstract](81) [FullText HTML] (32) [PDF 2554KB](20)
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In order to explore the influence of sand particle size on its shear resistance, strain controlled direct shear apparatus and discrete element software were used to conduct shear tests on three kinds of sand with different average particle sizes, and the shear characteristics of sand were analyzed f...
Deep Foundation Pit Technology
Solutions to Problems Encountered in Deep Foundation Pit Affected by Multi-layer Groundwater
Liu Xuanpeng, Qin Guodong, Ma Shimin, Su Tiezhi, Guo Yongsheng, Yan Qiming
2023, 37(5): 623-630. doi: 10.3969/j.issn.1007-2993.2023.05.018
[Abstract](104) [FullText HTML] (37) [PDF 5802KB](32)
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The groundwater level in Beijing has generally risen under the influence of ecological water replenishment in recent years, which poses a great threat to the safety of foundation pit. A series of problems encountered in the construction of a foundation pit supporting project affected by multi-layer ...

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