NEWS
Our motto is "Safety is a life"
دعامات ألواح الصلب
ركائز الألواح الفولاذية عبارة عن أقسام هيكلية طويلة مع نظام متشابك عمودي يخلق جدارًا مستمرًا. غالبًا ما تستخدم الجدران للاحتفاظ بالتربة أو الماء. تعتمد قدرة قسم ورقة كومة على الأداء الهندسي والتربة التي يتم دفعها إليها. يقوم الوبر بنقل الضغط من الجانب المرتفع للجدار إلى التربة أمام الجدار.
هناك تطبيقات دائمة ومؤقتة. تظل أكوام الألواح الدائمة في الأرض وتعمل بمثابة هياكل الاحتفاظ الدائمة. تم تصميم أكوام الألواح المؤقتة لتوفير وصول آمن للبناء ، ثم يتم إزالتها.
المدرفلة على الساخن والتشكيل على البارد هما طريقتان أساسيتان لتصنيع كومة الصفائح. في حين أن هناك اختلافات رئيسية بين هاتين الطريقتين ، فإن التمييز الأكثر أهمية هو التعشيق. نظرًا لأن ركائز الألواح المدلفنة على الساخن يتم إنتاجها من الفولاذ في درجات حرارة عالية ، فإن التعشيق يميل إلى أن يكون أكثر إحكامًا من نظيره المشكل على البارد. عادة ، لا يُنصح باستخدام الأقفال المتشابكة في ظروف القيادة الصعبة للغاية أو للجدران التي تتطلب نفاذية منخفضة. تكون أكوام الألواح المدلفنة على الساخن أكبر بشكل عام ولها نطاق قوة أوسع من أكوام الألواح ذات الشكل البارد ، ولكن هناك تداخل كبير بين الاثنين ، خاصة في الأحجام الأكثر شيوعًا.
ركائز الألواح المدفوعة عبارة عن صفائح فولاذية متشابكة رقيقة تستخدم لبناء حاجز مستمر في الأرض. يتم تحقيق التعشيق عادةً عن طريق إمساك حافة إحدى الكومة في الكومة السابقة.
A wide range of sheet pile sections and profiles are available from many steel manufacturers. Cold-rolled sections have a weaker interlock than hot-rolled sections. In hard driving conditions this interlock might “unzip” or cause alignment problems which would require replacement of the sheet piles. Cold-rolled sections also are usually thinner than hot rolled and thus may be more prone to overstressing during driving.
Sheet piled retaining walls are often restrained by use of internal propping, bracing, anchors or deadmen. It is often possible to extract and reuse sheet piles making this an economically attractive retaining wall system.
One of the main applications for sheet piles is for temporary retaining walls or cofferdams used to allow permanent in ground construction to be undertaken. The durability of sheet piles can be extended with protective coatings.
Driven sheet piles are often installed by vibrating hammers operated off leaders mounted on tracked base machines or suspended from crawler cranes. Diesel impact hammers and hydraulic press in machines can also be used to drive or push the piles into place. Sometimes water jetting or preboring is used to assist penetration through stiff or hard layers.
ASC Contractors installs driven steel piles up to 25m in length with individual pile weight up to 5 tonnes. We carry out this work using a range of piling rigs, including purpose built RG16, RG19 and LRB255 piling rigs.
The RG16 and RG19 piling rigs have telescopic leaders and allow the piling rig to pitch and vibrate piles up to 16m and 19m long to refusal. These rigs have been used extensively throughout Australia including at Finnucane Island Car Dumper No 4 (WA), Perth desalination plant (WA), Adelaide Superway (SA), Tugun Bypass (NSW) and at Fremantle Port Upgrade (WA).
Free driving of sheet piles is also common, we use ICE 600 vibrators for smaller pile sections and PTC 120 HD vibrators for larger piles.
http://www.vibratoryhammers.org/hammers/191,ptc-model-120hd.html
http://www.ice-holland.com/producten/161/36553/ICE-600/Powerpacks/
SIMTAR-200 COAL TAR EPOXY Description: Self priming two components, H.B. Coal Tar Epoxy. Excellent adhesion & abrasion resistance. Recommended for saltwater immersion service. Provides 16.0 mils. protection in two coats. Conformance: U.S. Corp of Engineers formula C-200 and the steel structures painting council No. 16 specifications. Recommended Uses: Marine docks, ship hulls, tank interiors, pipelines interior & exterior, marine barges (exterior), metal protection in most chemical environments. Technical Data Generic Type: Epoxy Polyamide Coal Tar Epoxy Color and Finish: Black & Red, Low Gloss Components: Two Application Temperature Normal Minimum Maximum Ambient Air: 60-90º F 50º F 120º F Material: 65-85º F 55º F Surface: 65-85º F 50º F 100º F Humidity: 20-80% 0% 85% Temperature Resistant: Continous: 200º F Occassional: 250º F Percent Solids by Volume (Part A&B Mixed): 75 +/- 1.0% Theoretical Coverage: 1170 sq. ft. per gal @ 1 mils dry Flash Point: Comp A: 85º F. Comp B: Over 160º F Recommended DFT: 16 mils (8 mils per coat) Wet: 10-12 mils Dry: 8 mils Drying Time: at 50º F at 70º F at 90º F Set to touch: 24 hrs. 6 hrs. 4 hrs Recoat Time: 72 hrs. 18 hrs. 12 hrs. Final Cure: Non-Immersion: 3 days 1 day Immersion 7 days 3 days Shelf Life: 12 months Pot Life: 4 hours @ 77º F Mixing Ratio: 4:1 by volume Packaging & Shipping Weight: 5 Gal. Kit: 56.0 lbs. 1 Gal. Kit: 12.0 lbs. Recommended Thinner: T-1 Thinner for Coal Tar Epoxy Surface Preparation: Steel: "Near White Blast Cleaning" (SSPC-SP10) Concrete: Should be properly cured and free from contaminants. Brush blast to provide etched surface. Application Data: Method of Application: Conventional or Airless Spray Spray Guns: Conventional Fluid Tip Air Cap DeVilbiss-MBC-510 D 64 Binks-Model 18 66 or 68 63PB or 68PB Airless: Graco- 30:1 ratio with 206718 gun or Speeflo Commander 30 with H Gun- 0.019 or 0.031 orfice. The Substrate temperature before coating should be 5-7º F. above the dew point. Mixing: Agitate Part A with Jiffy Mixer to reduce viscosity of material. Thoroughly mix Component B for a few minutes. Below 65º F allow 30 minutes induction time before application. Apply in well-atomized spray coat overlapping each pass 50%. May be thinned up to 1 pint per gallon with T-1 Thinner. Safety Precautions: (A) Use normal precautions such as gloves, facemasks. (B) Adequate ventilation must be maintained. (C) Explosion proof lights & electrical equipment. (D) Non-Sparking shoes & tools for workers in area. (E) This product contains flammable materials. Forbid all flames, smoking and welding in work area. (F) Avoid breathing of vapor, contact with skin or eyes. If product comes in contact with skin or eyes, wash thoroughly with water and obtain medical attention. Non-Warranty: The technical data listed herein has been compiled for your convenience and guidance, and is based upon our experience and knowledge. However, since we have no control over the use of this information of this product, no warranty expressed or implied, is intended or given. Simco Coatings, Inc. assumes no responsibility whatsoever for coverage, performance, or any other damages, including injuries resulting from use of this information or of products recommended herein.
Sheet Pile