Investigating pile anchor support system for deep foundation pit in a congested area of Changchun

Chen, Aoxue; Wang, Qing; Chen, Jianping; Chen, Zhao; Yang, Jingang

doi:10.1007/s10064-020-01985-7

Cited by 27 publications

(11 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The development of urbanization is bringing more and more tests of traffic in cities. In order to ease traffic pressure, governments have taken various measurements, such as widening roads, building more flyovers, and developing underground traffic systems [1][2][3]. Among these measurements, underground traffic systems are the most effective since land resources are very scarce in cities.…”

Section: Introductionmentioning

confidence: 99%

Stability of a Deep Foundation Pit with Hard Surrounding Rocks under Different in-Time Transverse Supporting Conditions

Li,

Ma,

Gao

et al. 2024

Applied Sciences

View full text Add to dashboard Cite

This paper focuses on investigating the stability of a deep foundation pit with hard surrounding rocks at different excavation stages with different supporting schemes by means of numerical calculations. The supporting schemes in question were combinations of one fixed vertical support and four varied transverse supports. Drilled grouting piles were used as vertical supports, and the commonly used steel bracings and prestressed anchorages served as transverse supports. The parameters used to evaluate the stability of the foundation pit at different excavation stages included the lateral displacements of the surrounding rocks, the settlement of the surrounding ground, the axial forces of steel bracings, and displacements at the tops of the drilled grouting piles. Simulation results showed that when a transverse supporting scheme consisting of one-layer steel bracings and prestressed anchorages set at 9 m and 22.5 m underground, respectively, was adopted, the lateral displacements of the surrounding rocks and settlement of the surrounding ground at different excavation stages were the largest compared to those under the other three transverse supporting schemes, while the corresponding values were lower compared to those allowed in Chinese standard GB50007-2011, demonstrating that this kind of supporting scheme is effective in terms of ensuring the safety of the foundation pit at different excavation stages. Moreover, the setting techniques for this kind of supporting scheme were relatively simple, and the corresponding influences of supporting element arrangements on excavation techniques were the lowest. Therefore, one-layer steel bracings and one-layer prestressed anchorages constituted the most suitable transverse supporting scheme for excavating a deep foundation pit with hard surrounding rocks.

show abstract

Section: Introductionmentioning

confidence: 99%

Stability of a Deep Foundation Pit with Hard Surrounding Rocks under Different in-Time Transverse Supporting Conditions

Li,

Ma,

Gao

et al. 2024

Applied Sciences

View full text Add to dashboard Cite

show abstract

“…The research proved that the lateral displacement of retaining piles increases with excavation depth. Chen et al [8] researched the pile anchor support system for a deep foundation in a congested area of Changchun by monitoring and calculating lateral deformation with Plaxis 2D [5]. The results showed that the maximum horizontal displacement in the pit could be reduced by over 50%, 40%, and 30%, respectively, using the combination of soil nailing wall and pile anchor compared with a single support solution.…”

Section: Introductionmentioning

confidence: 99%

Comparative analysis of an anchored retaining wall system in a deep foundation excavation: A case study of Sivas Cultural Center Building in Türkiye

Acar

KEKÜL

2023

Turkish Journal of Engineering

View full text Add to dashboard Cite

Modeling the surface element and support system in deep excavation pits and investigating the deformation mechanism is an important issue. In this study, alternative solution methods for an anchored bored pile model are compared and discussed, and it is aimed to contribute to the studies to be carried out in the deep excavation area. A numerical analysis of retaining wall design is analyzed in the case of the Sivas cultural center building's deep excavation using GGU-Retain and Plaxis 2D software. Measured field data and simulated results are discussed. As a result, the bending moment and lateral deformation reach a maximum when the foundation pit is excavated to the bottom. It can be said that the lateral deformation value found with Plaxis 2D is within the allowable limits, closer to the field data, and provides sufficient quality. The research results will provide theoretical and practical experience for the optimal design and construction of similar deep excavation pits.

show abstract

“…In addition, the complex structure of seabed along with ocean currents and waves may change the soil topology, leaving the submarine cables exposed and suspended on the surface of the seabed. Vortexinduced vibration and ocean currents accelerates the soil scouring impact, and the loose sediment increases the suspended length of the submarine cable, thereby increasing the probability of anchor damage [17][18][19][20]. The suspended submarine cables' force performance is severely affected, which makes them even more liable to many kinds of damage such as deformation, buckling, resonance and even fracture, with a result of considerable economic damage.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Three-Core Composite Submarine Cable Damage Due to Ship Anchor

Tan

et al. 2022

IEEE Access

View full text Add to dashboard Cite

Suspended submarine cables are prone to likely mechanical damages due to ship anchors, which represent a significant threat to the reliability of power transmission and information communication networks. This paper is aimed at presenting a detailed investigation to the dynamic response of a ship anchor impacting the suspended section a submarine cable in order to reduce the risk of cable damage. In this regard, a three-dimensional and dual nonlinear model of the anchor affecting a subsea cable is established using ABAQUS finite element analysis software. The damage effect due to the ship anchor on the suspended and buried-in-soil sections of the cable is studied. Results show that when a ship anchor hits a suspended section of the subsea cable, the mechanical stress is concentrated at the impacted point and is progressing to both sides of the suspended section with a significant cable deformation. On the other hand, the buried section of the cable suffers from a short impact process, and the deformation is relatively small. To reduce this impact effectively, a detailed technical comparison of two common dumping and filling methods is conducted, and the better protection method is proposed.INDEX TERMS Composite submarine power cable; anchor fall impact; suspended cable and pipeline; throwing method; dent depth

show abstract

Investigating pile anchor support system for deep foundation pit in a congested area of Changchun

Cited by 27 publications

References 18 publications

Stability of a Deep Foundation Pit with Hard Surrounding Rocks under Different in-Time Transverse Supporting Conditions

Stability of a Deep Foundation Pit with Hard Surrounding Rocks under Different in-Time Transverse Supporting Conditions

Comparative analysis of an anchored retaining wall system in a deep foundation excavation: A case study of Sivas Cultural Center Building in Türkiye

Analysis of Three-Core Composite Submarine Cable Damage Due to Ship Anchor

Contact Info

Product

Resources

About