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Comparative study on foundation treatment methods of immersed tunnels in China

Shaochun WANG, Xuehui ZHANG, Yun BAI

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 1,   Pages 82-93 doi: 10.1007/s11709-019-0575-x

Abstract: treatment methods for immersed tunnel construction: pile foundation, sand flow foundation, groutingfoundation, and gravel bedding foundation.Subsoil stress time-history of different method are specified first, plus a summary of settlement assessmentmethod for foundation quality control.Further, a comprehensive comparison of settlement and cost of these four foundation treatment methods

Keywords： foundation treatment method     immersed tunnel     subsoil stress     settlement    

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Model test of the group piles foundation of a high-speed railway bridge in mined-out area

Xin LIANG,Qian-gong CHENG,Jiu-jiang WU,Jian-ming CHEN

Frontiers of Structural and Civil Engineering 2016, Volume 10, Issue 4,   Pages 488-498 doi: 10.1007/s11709-016-0338-x

Abstract: The research on the mechanism of pile-soil-cap-goaf interaction and settlement of high-speed railwayBy taking the pile group of Guanshandi bridge foundation in Hefei-Fuzhou high-speed railway as the prototypeMeanwhile, three types of data including the bearing behavior of piles, and the settlement law, and soilThere is a maximum critical value for the uneven settlement of pile group in goaf, and when the valueis reached, the uneven settlement stop growing anymore.

Keywords： high-speed railway     mined-out areas     goaf     group piles foundation     physical model test     bearing capacity     settlement    

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New pile foundation technology of 21 Century: DX pile

Wang Mengshu,He Dexin,Tang Songtao

Strategic Study of CAE 2012, Volume 14, Issue 1,   Pages 4-12

Abstract:

As a kind of old construction form, pile foundation still plays a tremendous

Keywords： DX pile     bearing mechanism     bearing capacity     settlement    

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Construction technology in huge caisson on the ground

Qiu Qionghai,Lin Fan,Jiang Jianghua

Strategic Study of CAE 2010, Volume 12, Issue 4,   Pages 14-20

Abstract: The south and north foundation of the anchorages are deep water caisson with rectangular plane size 67.9

Keywords： suspension bridge     anchorage     caisson     assembly     deep-well dewatering     foundation settlement     air suction    

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Prediction of shield tunneling-induced ground settlement using machine learning techniques

Renpeng CHEN, Pin ZHANG, Huaina WU, Zhiteng WANG, Zhiquan ZHONG

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 6,   Pages 1363-1378 doi: 10.1007/s11709-019-0561-3

Abstract: Predicting the tunneling-induced maximum ground surface settlement is a complex problem since the settlementextreme learning machine, support vector machine and random forest (RF), to predict tunneling-induced settlementThe results indicated that ML algorithms have great potential to predict tunneling-induced settlementperformance among six ML algorithms, which accurately recognize the evolution of tunneling-induced settlementThe correlation between the input variables and settlement is also investigated by Pearson correlation

Keywords： EPB shield     shield tunneling     settlement prediction     machine learning    

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Long-term settlement behavior of ground around shield tunnel due to leakage of water in soft deposit

Huaina WU, Yeshuang XU, Shui-long SHEN, Jin-chun CHAI

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 2,   Pages 194-198 doi: 10.1007/s11709-011-0105-y

Abstract: leaking of soil and groundwater causes the long-term ground loss around tunnel and thus results in the settlementThis paper aims to analyze the impact of the leakage of groundwater through segments on the long-term settlementThe analyzed results show that settlement of ground surface increases gradually with the increase ofWhen the leaked volume was unevenly distributed, differential settlement occurred locally.The results reveal that there is a linear relationship between settlement and leaked volume when the

Keywords： lining deficit     leakage of water     shield tunnel     settlement     soft deposit    

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Reliability-based settlement analysis of embankments over soft soils reinforced with T-shaped deep cement

Chana PHUTTHANANON; Pornkasem JONGPRADIST; Daniel DIAS; Xiangfeng GUO; Pitthaya JAMSAWANG; Julien BAROTH

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 5,   Pages 638-656 doi: 10.1007/s11709-022-0825-1

Abstract: This paper presents a reliability-based settlement analysis of T-shaped deep cement mixing (TDM) pile-supported

Keywords： T-shaped deep cement mixing piles     piled embankments     settlement     reliability analysis     soil uncertainties    

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Influence and Control Strategy for Local Settlement for High-Speed Railway Infrastructure

Gaoliang Kang

Engineering 2016, Volume 2, Issue 3,   Pages 374-379 doi: 10.1016/J.ENG.2016.03.014

Abstract:

This paper discusses the main impact factors of the local settlement and differential settlement ofThe analysis results show that groundwater exploitation is the direct cause of differential settlementbridge dynamic responses under different differential settlements, a control standard of differential settlement

Keywords： Local settlement     Differential settlement     Additional load of ballastless track     Vehicle and track dynamics    

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Study on settlement of DX single pile

Ouyang Yi,Chen Lihong,Zhang Dehua

Strategic Study of CAE 2012, Volume 14, Issue 1,   Pages 74-79

Abstract: changes the load transfer mechanism of piles, improves capacity and also significantly reduces the settlementThe results show that in the same load conditions, the settlement of DX pile is 0.55 to 0.80 times asThe changes of the settlement caused by load-carrying plate are analyzed.

Keywords： DX pile     load-carrying plate     settlement     superimposed stress    

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Torsional vibrations of a cylindrical foundation embedded in a saturated poroelastic half-space

Dazhi WU,Lu YU

Frontiers of Structural and Civil Engineering 2015, Volume 9, Issue 2,   Pages 194-202 doi: 10.1007/s11709-015-0292-z

Abstract: Considering the interactions between an embedded foundation and saturated soil, the torsional vibrationsof a cylindrical foundation embedded in a saturated poroelastic medium are analyzed in this paper.Both a rigid foundation and an elastic foundation are considered.Assuming both the side surface and the bottom surface of the foundation are perfectly bonded to soil,of an embedded cylindrical foundation are presented.

Keywords： embedded foundation     saturated soil     rigid foundation     elastic foundation     torsional vibration    

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Case study of DX single pile settlement

Tang Songtao,Yuan Xiyu,Chen Lihong

Strategic Study of CAE 2012, Volume 14, Issue 1,   Pages 41-45

Abstract: The bearing capacity of the pile is increased, while the settlement is significantly reduced at the sameThe characteristic of multi-pivot bearing makes the settlement mechanism very complicated and hard toThis paper compares the settlement characteristics of DX pile and straight pile on the basis of lotsof projects to verify the DX pile settlement formula and the reliability of correction factor.

Keywords： DX pile     straight pile     settlement     correction coefficient    

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Numerical modeling of current-induced scour around multi-wall foundation using large-eddy simulation

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 4,   Pages 546-565 doi: 10.1007/s11709-023-0943-4

Abstract: Scouring is one of the primary triggers of failure for bridges across rivers or seas. However, research concerning the scour mechanism of multi-wall foundations (MWFs) remains scarce, hindering the further application of MWFs. In this study, for the first time, the scouring effect caused by unidirectional flow around MWFs was examined numerically using FLOW-3D involving a large-eddy simulation. Initially, the applicability of the scouring model and input parameters was validated using a case study based on published measured data. Subsequently, the scouring effects of four MWFs with different wall arrangements and inflow angles, including the flow field analysis and scour pit and depth, were investigated thoroughly. It was found that the maximum scour depth of MWFs with an inflow angle of 0° was smaller than that of those with an inflow angle of 45°, regardless of the wall arrangement. Meanwhile, changing the inflow angle significantly affects the scour characteristics of MWFs arranged in parallel. In practical engineering, MWFs arranged in parallel are preferred considering the need for scouring resistance. However, a comparative analysis should be performed to consider comprehensively whether to adopt the form of a round wall arrangement when the inflow angle is not 0° or the inflow direction is changeable.

Keywords： multi-wall foundation     current-induced scour     bridge foundation     large-eddy simulation     numerical analysis    

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Evaluation of seismic reliability of gravity dam-reservoir-inhomogeneous foundation coupled system

Hamid Taghavi GANJI, Mohammad ALEMBAGHERI, Mohammad Houshmand KHANEGHAHI

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 3,   Pages 701-715 doi: 10.1007/s11709-018-0507-1

Abstract: The seismic performance of gravity dam-reservoir-foundation coupled system is investigated utilizingThe methodology is applied to Pine Flat gravity dam and the foundation is considered to be inhomogeneousThe effects of the deconvolution process, number of samples, and foundation inhomogeneity are investigated

Keywords： gravity dams     dam-reservoir-foundation interaction     seismic reliability     inhomogeneous foundation     earthquake    

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Shan-shui City: the Ideal Human Settlement for China in the 21st Century

Bao Shixing

Strategic Study of CAE 2002, Volume 4, Issue 9,   Pages 19-23

Abstract:

In the 1990s, a great discussion on city developing model in socialist China in the 21st century was raised widely. At that time, a new concept —“Shan-shui city” was first put forward by Professor Qian Xuesen. The concept integrates Chinese traditional culture, which includes Chinese poetry, paintings and classical gardening architecture, with modern city construction. “Shan-shui city” model puts emphasis on local history and culture, which is a kind of comprehension of natural ecological processes, historical source and cultural veins. To go to a unification of man, its society and nature and to realize a kind of visual and psychological sense of beauty to their living and working environment are basic goals of building a “Shan-shui city”. The 21st century is named city's century because of developing countries' urbanization. In the mean time, China has come into the new phase of accelerated urbanization. This is the era background of discussing the idea of “Shan-shui city”. Another background contributes to culture and the spirit genes that Chinese love natural mountains and water. The culture about natural mountains and water plays an important role in China.

Keywords： shan-shui city     Qian Xuesen     human settlement    

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Technology on settlement monitoring and evaluation in bridge pier in Beijing-Tianjin inter-city railway

Ding Yuanwen

Strategic Study of CAE 2009, Volume 11, Issue 1,   Pages 43-47

Abstract:

Specific requirements and methods of settlement monitoring which arehigh-speed railway are introduced systematically, and mathematical model and determinant conditions of settlement

Keywords： Beijing-Tianjin inter-city railway     bridge     settlement monitoring     evaluation    

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Title Author Date Type Operation

Comparative study on foundation treatment methods of immersed tunnels in China

Shaochun WANG, Xuehui ZHANG, Yun BAI

Journal Article

Model test of the group piles foundation of a high-speed railway bridge in mined-out area

Xin LIANG,Qian-gong CHENG,Jiu-jiang WU,Jian-ming CHEN

Journal Article

New pile foundation technology of 21 Century: DX pile

Wang Mengshu,He Dexin,Tang Songtao

Journal Article

Construction technology in huge caisson on the ground

Qiu Qionghai,Lin Fan,Jiang Jianghua

Journal Article

Prediction of shield tunneling-induced ground settlement using machine learning techniques

Renpeng CHEN, Pin ZHANG, Huaina WU, Zhiteng WANG, Zhiquan ZHONG

Journal Article

Long-term settlement behavior of ground around shield tunnel due to leakage of water in soft deposit

Huaina WU, Yeshuang XU, Shui-long SHEN, Jin-chun CHAI

Journal Article

Reliability-based settlement analysis of embankments over soft soils reinforced with T-shaped deep cement

Chana PHUTTHANANON; Pornkasem JONGPRADIST; Daniel DIAS; Xiangfeng GUO; Pitthaya JAMSAWANG; Julien BAROTH

Journal Article

Influence and Control Strategy for Local Settlement for High-Speed Railway Infrastructure

Gaoliang Kang

Journal Article

Study on settlement of DX single pile

Ouyang Yi,Chen Lihong,Zhang Dehua

Journal Article

Torsional vibrations of a cylindrical foundation embedded in a saturated poroelastic half-space

Dazhi WU,Lu YU

Journal Article

Case study of DX single pile settlement

Tang Songtao,Yuan Xiyu,Chen Lihong

Journal Article

Numerical modeling of current-induced scour around multi-wall foundation using large-eddy simulation

Journal Article

Evaluation of seismic reliability of gravity dam-reservoir-inhomogeneous foundation coupled system

Hamid Taghavi GANJI, Mohammad ALEMBAGHERI, Mohammad Houshmand KHANEGHAHI

Journal Article

Shan-shui City: the Ideal Human Settlement for China in the 21st Century

Bao Shixing

Journal Article

Technology on settlement monitoring and evaluation in bridge pier in Beijing-Tianjin inter-city railway

Ding Yuanwen

Journal Article