The Construction of Pipe Piles Filled with Concrete

Pipe piles shall comply with the specifications of the American Society for Testing Materials for Welded and Seamless pipe piles (A252-55).

Pipe piles to be driven open-ended shall have a minimum nominal outside diameter of ten and three- fourths inches. Minimum nominal wall thickness for diameters less than 14 inches shall be 0.25 inch. Minimum nominal wall thickness for diameters of 14 inches or more shall be 0.375 inch.

Pipe piles to be driven closed-ended shall have a steel end of approved design. Minimum nominal outside diameter shall be ten and three-fourths inches. Minimum nominal wall thickness for diameters less than 14 inches shall be 0.125 inch. Minimum nominal wall thickness for diameters of 14 inches or more shall be 0.20 inch. If wall thicknesses are less than these values, the piles shall be considered as cast-in-place concrete piles.

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Estaca prancha Enchimento Grouting

Este projeto envolveu o Grouting por Pressão com um material de argamassa de cimento / flyash. A construção da fundação de uma nova torre de resfriamento para uma usina nuclear representou muitos desafios únicos para as fundações.

Três Estaca prancha Cofferdams foram instalados para permitir escavações de até seis metros abaixo do nível. Dois Cofferdams usaram Tremie Seals para evitar o influxo de água do fundo. A fim de vedar os intertravamentos da estaca-prancha para evitar vazamentos de água subterrânea e aumentar a fricção da estaca para reduzir o potencial de elevação, foi usado o grouting.

Um plugue de argamassa foi instalado na terceira ensecadeira em vez de uma vedação tremelada. Este Cofferdam, ao contrário dos outros, tinha um leito de pedra razoavelmente sólido no fundo da escavação proposta. A carcaça de aço foi instalada através da sobrecarga e a rocha foi perfurada para projetar a profundidade.

Packers foram definidos para isolar a localização do Grout Plug abaixo da escavação proposta. Grout foi injetado no limerock para preencher vazios e cursos de água. Os buracos de argamassa secundários foram instalados em áreas com tomadas de argamassa maiores que o normal. O Plug Grout provou ser uma alternativa econômica para um Selo Tremie convencional.

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Damwand Interlock Grouting

Dit project betrof Drukvoegen met een Cement / Flyash voegmateriaal. De funderingsconstructie van een nieuwe koeltoren voor een kerncentrale vormde vele unieke funderingsuitdagingen.

Drie damwand kofferdammen werden geïnstalleerd om uitgravingen tot twintig voet onder niveau mogelijk te maken. Twee kofferdammen gebruikten Tremie-afdichtingen om de instroom van water van de bodem te voorkomen. Om de vergrendelingen van de damplanken af ​​te dichten om lekkage van grondwater te voorkomen, en de huidwrijving van de heistelling te vergroten om het opwaartse potentieel te verminderen, werd er cementvoeg gebruikt.

Op de derde kofferdam werd een groutplug geïnstalleerd in plaats van een triëmeafdichting. Deze Kofferdam had, in tegenstelling tot de anderen, redelijk degelijk gesteente op de bodem van de voorgestelde opgraving. Stalen behuizing werd geïnstalleerd door de deklaag en de steen werd geboord om de diepte te bepalen.

Verpakkers waren ingesteld om de locatie van de voegverbinding onder de voorgestelde uitgraving te isoleren. Grout werd in de limerock geïnjecteerd om leemtes en waterlopen te vullen. Secundaire voegen werden geïnstalleerd in gebieden met meer dan normale voegspecie. De mortelplug bleek een kosteneffectief alternatief te zijn voor een conventioneel Tremie-zegel.

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Sheet Pile Interlock Grouting

This project involved Pressure Grouting with a Cement / Flyash grout material. The foundation construction of a new cooling tower for a Nuclear Power Plant posed many unique foundation challenges.

Three Sheet Pile Cofferdams were installed to permit excavations up to twenty feet below grade. Two Cofferdams used Tremie Seals to prevent the inflow of water from the bottom. In order to seal the interlocks of the sheet piling to prevent groundwater leakage, and increase the skin friction of the piling to reduce uplift potential, grouting was used.

A Grout Plug was installed on the third cofferdam in lieu of a tremie seal. This Cofferdam, unlike the others, had reasonably sound bedrock at the bottom of the proposed excavation. Steel Casing was installed through the overburden and the rock was drilled to design depth.

Packers were set to isolate the location of the Grout Plug beneath the proposed excavation. Grout was injected into the limerock to fill voids and water courses. Secondary grout holes were installed in areas with larger than normal grout takes. The Grout Plug proved to be a cost effective alternative to a conventional Tremie Seal.

This article comes from earthtech edit released

Die Zukunft der Stahlspundwände

Grand Piling entwickelt und erweitert das Angebot der Stahlspundwände bis 2018 werden neue Z-Spundbohlen-Familien eingeführt.Außerdem werden Mehrwertleistungen wie Designdienstleistungen, Crimpen und Schweißen von Stahlspundwände, Lackieren und Auftragen von Dichtstoffen angeboten.

In den kommenden Jahren werden wir eine ganze Palette von Spundbohlen vom Typ U und Z, von leicht bis schwer, aufbauen, um ihre globale Position als Hersteller von Stahlspundwände zu stärken.

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The future of Steel Sheet piles

Grand Piling constantly developing and enhancing the range of steel sheet piles. By 2018 some new families of Z type sheet piles will be introduced .Also value added services as design services, crimping and welding of steel sheet piles , painting and application of sealant will be offered.

Within the coming years we will establish a full range of U and Z type sheet piles, from light to heavy, to strengthen their global position as a manufacturer of steel sheet piles.

This article comes from emiratessteel edit released

Béton précontraint Palplanche

APPLICATION

  1. Palplanche permanent comme remblai pour la route, le chemin de fer, la rivière, la protection côtière, le port, les cofferdams, l’étang de stockage, la construction de sous-sol, le canal agricole et les structures de retenue de terre.
  2. Palplanche comme étayage temporaire pendant les travaux de construction.

AVANTAGES

  1. Ratio de haute résistance au poids
  2. Haute performance & amp; relativement peu coûteux
  3. Petit déplacement à la tête de pieu
  4. Moins de soucis de corrosion
  5. Longue durée de vie

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