• Title/Summary/Keyword: sheet pile

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The Permeability Characteristic of Z-Type Sheet Pile Joints under Water Sealing Conditions (지수조건에 따른 Z형 강널말뚝 연결부의 투수특성)

  • Chung, Ha-Ik;Lee, Yong-Soo;Hong, Seung-Seo
    • Journal of the Korean GEO-environmental Society
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    • v.5 no.4
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    • pp.57-63
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    • 2004
  • In general steel sheet piles are used in the containment system, which are vertical barrier systems for waste disposal and landfill purposes, and roads in excavation for temporary structure. This paper presents case study of the use of an interlocking sheet pile for water and containment. Cut-off Z-type sheet pile joints are investigated to determine their permeability from the field test. Four different joint sealing materials are used in field test. The results showed joint permeability is significant time-dependent and joint-dependent. These are explored and conclusions on permeability characteristics of different sealants are noted. A case study gives a design example as well as suggestion on permeability and water tightness can be implemented in using the sheet pile barrier in civil and environment works. From the test results, the effective sealing programs of sheet pile interlocks are suggested.

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Numerical analysis of sheet pile wall structure considering soil-structure interaction

  • Jiang, Shouyan;Du, Chengbin;Sun, Liguo
    • Geomechanics and Engineering
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    • v.16 no.3
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    • pp.309-320
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    • 2018
  • In this paper, a numerical study using finite element method with considering soil-structure interaction was conducted to investigate the stress and deformation behavior of a sheet pile wall structure. In numerical model, one of the nonlinear elastic material constitutive models, Duncan-Chang E-v model, is used for describing soil behavior. The hard contact constitutive model is used for simulating the behavior of interface between the sheet pile wall and soil. The construction process of excavation and backfill is simulated by the way of step loading. We also compare the present numerical method with the in-situ test results for verifying the numerical methods. The numerical analysis showed that the soil excavation in the lock chamber has a huge effect on the wall deflection and stress, pile deflection, and anchor force. With the increase of distance between anchored bars, the maximum wall deflection and anchor force increase, while the maximum wall stress decreases. At a low elevation of anchored bar, the maximum wall bending moment decreases, but the maximum wall deflection, pile deflection, and anchor force both increase. The construction procedure with first excavation and then backfill is quite favorable for decreasing pile deflection, wall deflection and stress, and anchor forces.

Simplified Formulae for Free Earth Supported Anchored Sheet-Pile Wall (앵커식 자유지지 널말뚝벽의 설계용 간편식)

  • Kim, Khi-Woong;Kwon, Min-Seok;Paik, Young-Shik
    • Journal of the Korean GEO-environmental Society
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    • v.3 no.3
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    • pp.37-44
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    • 2002
  • Sheet piles are often used to build continuous walls for the waterfront structures, and also used for some temporary structures, such as the braced cuts. Sheet pile walls may be divided into two basic categories that is cantilever and anchored. Stock(1992) developed an expedient format for determining the depth, maximum bending moment and anchor force of sheet pile wall for cantilever and free earth supported anchored wall. But, that is useful only in case that water table exists above the dredge line. In this study, a simplified formulae was developed for the design of the anchored free earth supported sheet pile wall both in sand and clay by solving the derived equations and regression analysis. It can be used whether the ground water table is above or under the dredge line.

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An approach of seismic design for sheet pile retaining wall based on capacity spectrum method

  • Qu, Honglue;Li, Ruifeng;Hu, Huanguo;Jia, Hongyu;Zhang, Jianjing
    • Geomechanics and Engineering
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    • v.11 no.2
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    • pp.309-323
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    • 2016
  • As the forefront of structural design method, capacity spectrum method can be applied conveniently, and through this method, deformation demand of structure can be considered. However, there is no research for the seismic application in the structure of sheet pile retaining wall to report. Therefore, focusing on laterally loaded stabilizing sheet pile wall, which belongs to flexible cantilever retaining structure and meets the applying requirement of capacity spectrum method from seismic design of building structure, this paper studied an approach of seismic design of sheet pile wall based on capacity spectrum method. In the procedure, the interaction between soil and structure was simplified, and through Pushover analysis, seismic fortification standard was well associated with performance of retaining structure. In addition, by comparing the result of nonlinear time history analysis, it suggests that this approach is applicable.

Stability Analysis of Sheet Pile Reinforced with Strut (버팀대로 보강된 널말뚝의 안정해석)

  • Kim, Ji Hoon;Kang, Yea Mook;Chee, In Taeg
    • Korean Journal of Agricultural Science
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    • v.24 no.2
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    • pp.226-236
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    • 1997
  • The results obtained by elasto-plastic analysis method about the displacement, deformation and stability on the soft ground excavation using sheet pile were summarized as follows ; 1. In the case of strut 1 step, the maximum wall displacement value in the first and the second excavation was small, but it increase remarkably after the third excavation and when the excavation depth was 8m, the point of maximum wall displacement was shown 0.75H~0.8H. 2. The value of safety factor(Fs) was increased with increasing of the penetration depth of sheet pile, cohesion and internal friction angle of ground. Safety factor was mostly effected by penetration depth of sheet pile and more effected by cohesion than internal friction angle of ground. 3. Since the deformation of sheet pile of this ground from the results of analysis and measurement increased remarkabaly after 6m excavation depth, it was desirable that the point of strut installation was GL-6m. 4. Safe excavation depth on ground by analysis considered penetration depth, cohesion and internal friction was shown at the table 3.

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A Case study of steel sheet pile (강널말뚝을 이용한 국내.외 시공 사례)

  • 여병철;김광일
    • Proceedings of the Korean Geotechical Society Conference
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    • 1994.09a
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    • pp.111-118
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    • 1994
  • The use of steel sheet pile walls as barrier walls have the temporary for coffer dam, retaining wall in excavation, etc., but also permanent of semi-permanent for harbor construction, containment systems, vertical barrier systems for waste disposal (landfill) or subway in excavarion. In all these applicaions the resistance of the structure to seepage plays an important role. Also the stability and longevity of the construction, the possibility of permanent control and survey make the steel sheet pile wall a nearly perfect vertical barrier from a technical and economical point of view.

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A field-replace case for the cutoff of water on a seawall (방조제 차수를 위한 현장대체공법 사례)

  • Kim, Joon-Seok
    • Proceedings of the Korean Society of Disaster Information Conference
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    • 2016.11a
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    • pp.181-182
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    • 2016
  • 방조제 차수공사를 실시하는 현장 지반의 하부에 철재이물질과 돌망태 와이어 등이 매립되어 있는 것으로 확인된 상황에서 강널말뚝(sheet pile)을 풍화대까지 항타하는 것이 현실적으로 불가능하므로 상부는 철재이물질(돌망태 등)이 없는 심도까지 T-4 및 Vibro Hammer 에 의한 강널말뚝(sheet pile)을 이용하여 차수하고, 철재이물질과 돌망태 와이어 등이 매립되어 있는 것으로 확인된 하부 풍화대까지는 그라우팅에 의한 차수를 시도하는 현장차수방법을 시공하여 성공적으로 차수결과를 얻을 수 있었다.

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Case Study for the Stability of Temporary Shoring Facilities at Inchon International Airport (가시설 안정성 검토에 관한 인천국제공항 시공 사례 연구)

  • 최인걸;조현모;류승철
    • Proceedings of the Korean Geotechical Society Conference
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    • 1999.03a
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    • pp.97-104
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    • 1999
  • This case study has been prepared to provide the practical data about construction of temporary shoring facilities (i.e. braced sheet pile excavation) and to utilize the case study information effectively for design and construction of future facilities. This case study includes information such as 1) installing measurement devices to monitor the deformation of the sheet pile walls and the subsoil in the vicinity after establishing the criteria for the sheet pile deflection; 2) monitoring the actual movement of the temporary facility after setting up the survey control standard (due to the movement of the temporary facility) : 3) inspecting the suitability of the temporary facility construction: and 4) analyzing and studying the result of the tension test after installing ground anchors.

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Simplified Formula for Design of Fixed Earth Supported Sheet-Pile Wall in Sand (사질토 지반 앵커식 고정지지 널말뚝 설계용 간편식)

  • Yang, Woo-Shik;Kim, Khi-Woong
    • Magazine of the Korean Society of Agricultural Engineers
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    • v.40 no.6
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    • pp.89-94
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    • 1998
  • Stock(1992) had developed the graph for solving the penetration depth, tieforce of anchor and maximum bending moment of sheet-pile wall for cantilever and free earth supported anchored wall. Kim(1995) had developed graph for design of fixed earth supported anchored wall. In this paper, the simplified formulas for calculating the penetration depth, tieforce of anchor and maximum bending moment of sheet-pile wall was developed for fixed earth supported anchored wall in sand. The developed formulas may be helpful for design or sheet pile wall.

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A Study on the Effect of Lateral Vibration of Sheet Pile on Vibratory Driving Force (널말뚝의 횡방향진동이 진동타입력에 미치는 영향에 대한 연구)

  • Lee, Seung-Hyun;Kim, Byoung-Il
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.8 no.4
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    • pp.848-852
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    • 2007
  • Many numerical analysis tools for predicting penetration speed of sheet pile are thought to be unreliable because they overestimate penetration speed for shallow depth of penetration. In order to overcome the defects of numerical analysis, lateral vibration model of sheet pile was suggested and energy consumption due to lateral vibration of sheet pile was estimated. Also, load reduction factor which explains reduction of vibratory driving force due to lateral vibration was introduced.

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