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Displacement Characteristics of Deep Foundation Pit with Pile-anchor Support Considering Snowfall
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Yuan-xun LI1, 2, Jia-gen SHI1, *, Chuan MA1, Song CHEN1
Science Technology and Engineering | 2025, 25(20) : 8624 - 8631
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Science Technology and Engineering | 2025, 25(20): 8624-8631
• Papers·Architectural Science •
Displacement Characteristics of Deep Foundation Pit with Pile-anchor Support Considering Snowfall
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Yuan-xun LI1, 2, Jia-gen SHI1, *, Chuan MA1, Song CHEN1
Affiliations
  • 1 School of Civil Engineering and Water Resources, Qinghai University, Xining 810016, China
  • 2 Qinghai Key Laboratory of Building Energy Saving Materials and Engineering Safety, Xining 810016, China
Published: 2025-07-18 doi: 10.12404/j.issn.1671-1815.2405469
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In order to study the displacement characteristics of pile and anchor supporting deep foundation pit in seasonal frozen loess area, the horizontal displacement of pile top and pile body and the surface settlement outside the pit under different working conditions were compared by indoor scale model test. The results show that water migration and redistribution occur in the freeze-thaw cycle, and the existence of external water replenishment conditions will accelerate the water migration rate, which makes the displacement of supporting structure and the surface settlement outside the pit much larger than that in the excavation stage. The maximum horizontal displacement of pile top and pile body in the freeze-thaw stage under closed conditions increase by 6~8 times compared with that in the excavation stage, and the surface settlement outside the pit increases by 3 times. Compared with the closed freeze-thaw condition, the horizontal displacement of pile top and pile body increases about 1.4 and 1.2 times, and the surface settlement outside the pit increases 1.5 times. The research results can provide reference for the risk prevention and control of pile and anchor support deep foundation pit construction in this kind of seasonal freezing loess area.

foundation pit excavation  /  freeze-thaw cycle  /  snowfall  /  model test
Yuan-xun LI, Jia-gen SHI, Chuan MA, Song CHEN. Displacement Characteristics of Deep Foundation Pit with Pile-anchor Support Considering Snowfall[J]. Science Technology and Engineering, 2025 , 25 (20) : 8624 -8631 . DOI: 10.12404/j.issn.1671-1815.2405469
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Year 2025 volume 25 Issue 20
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Article Info
doi: 10.12404/j.issn.1671-1815.2405469
  • Receive Date：2024-07-21
  • Online Date：2026-05-13
  • Published：2025-07-18
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  • Received：2024-07-21
  • Revised：2025-04-15
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Affiliations
    1 School of Civil Engineering and Water Resources, Qinghai University, Xining 810016, China
    2 Qinghai Key Laboratory of Building Energy Saving Materials and Engineering Safety, Xining 810016, China
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Citations
表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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