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BRUCE Pile Driving Equipment NEWS

United States Vibro Hammer Specification Guide – Sheet, Casing, H-Pile

JH KIM

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U.S. marine, bridge, and metro projects demand a spec-first approach to vibro hammer selection. This guide maps EM (eccentric moment), CF (centrifugal force), VPM (frequency), amplitude, and line-pull to typical American job scenarios (sheet/casing/H-pile), then matches the choice to power packs and clamps so you can move from submittal to RFQ without re-work.


• Vibro Hammer Specification (model tables) → https://www.powerquip.co.kr/products/vibro-hammer/specification/
• Vibro Hammer Features (suppressor, elastomers, remote pendant) → https://www.powerquip.co.kr/products/vibro-hammer/features-2/
• Vibratory Hammer Guide (principles & terms) → https://www.powerquip.co.kr/blog/vibratory-hammer-guide/
• Vibratory Hammer in Pile Driving (applications) → https://www.powerquip.co.kr/blog/vibratory-hammer-pile-driving/
• Contact Us (RFQ) → https://www.powerquip.co.kr/contact-us/

BRUCE vibro hammer SGV-400 driving sheet piles on U.S. bridge cofferdam—suppressor housing and remote pendant

1) Spec baselines by pile type (U.S. jobs)


Sheet piles (urban/bridge cofferdams):

  • · Target: mid–high VPM (≈1,700–2,000) for loose to medium sands; suppressor housing where city noise constraints apply.

  • · EM/CF: SGV 200–600 class typically covers most SP-III to SP-VI walls; check line-pull for extraction.

  • · Clamp: Universal sheet clamp sized for section depth; verify check valve + LED clamp-engage.


H-piles (deep foundations, limited headroom):

  • · Target: mid VPM with higher amplitude retention; ensure jaw profile suits flange thickness.

  • · EM/CF: step into SGV 400–600 for denser soils; consider power pack flow ceilings.


Casing/pipe piles (marine/offshore, drilled shafts):

  • · Target: frequency that avoids resonance with casing; double/quad clamps for large diameters, auto-locking beams for quick spans.

  • · EM/CF: SGV 600–1000–2000 range for heavy steel casings or long pipe piles; confirm max line-pull.


See full EM/CF/VPM tables and clamp ranges → https://www.powerquip.co.kr/products/vibro-hammer/specification/

2) U.S. soil response & tuning (VPM / amplitude)

  • · Loose sands & fills: higher VPM (≈1,900–2,000); keep amplitude moderate to prevent over-liquefaction around the wall toe.

  • · Dense sands/gravel: reduce to ≈1,600–1,730 VPM, increase amplitude via model step-up (EM/CF) to maintain penetration.

  • · Mixed/overburden near structures: prioritize suppressor + elastomer stack to limit transmitted vibration; verify monitoring plan.


Reference operating features and tuning controls → https://www.powerquip.co.kr/products/vibro-hammer/features-2/

3) Model selector (practical cut-offs)

Start here if you know three inputs: pile type, max section/Ø, target embedment.

  • · SGV 200–300: urban sheet walls, moderate embedment; short-span river works; tight access.

  • · SGV 400–600: heavier sheets / H-piles; mixed sands; general bridge foundations.

  • · SGV 1000: deep marine pipe/casing; higher amplitude demand; tidal windows.

  • · SGV 2000: very large casings/pipe piles, offshore staging; high CF with robust cooling & power delivery.


Download or view model tables → https://www.powerquip.co.kr/products/vibro-hammer/specification/
Brochure visuals & component overview → https://www.powerquip.co.kr/products/vibro-hammer/brochure/

4) Clamp & jaw selection (safety + productivity)

  • · Universal/Sheet Clamp (60U–320U): match clamping force to section and wall friction; check working pressure 300–320 bar.

  • · Double/Quad Casing Clamp (2×80D…4×160D): use auto-locking beam for diameter swaps; aim for <1 min changeover to save hours/week on large runs.

  • · Jaw profiles: keep hardened jaw fit to prevent flange crushing; use guide cheeks for precise alignment.

Clamp families and dimensions → https://www.powerquip.co.kr/products/vibro-hammer/specification/


5) Power pack matching (flow/pressure/cooling)

· Correct flow (LPM/GPM) and pressure (bar/psi) keep your hammer in its performance band. Pick from PQ-200V to PQ-1600V based on the SGV model and anticipated duty cycle (summer river temperatures, offshore spray, long extraction pulls).

  • · Rule-of-thumb: never cap the pump flow below the hammer’s max oil flow; sustained under-supply reduces amplitude and increases heat.

  • · Cooling: larger radiators and oil coolers stabilize high VPM urban runs and offshore shifts.

(See brochure power pack tables) → https://www.powerquip.co.kr/products/vibro-hammer/brochure/

6) Urban noise & compliance (submittal-ready)

For city centers and rail corridors, plan the package as follows:

  • · Suppressor/silence housing with elastomer isolation to reduce frame-borne noise.

  • · IEA/operation logs to document frequency, runtime, clamp-engage events for the owner’s QA.

  • · Remote pendant emergency stop + clamp status LEDs in operator line-of-sight.

Operating features for submittals → https://www.powerquip.co.kr/products/vibro-hammer/features-2/
Principles & terminology refresher → https://www.powerquip.co.kr/blog/vibratory-hammer-guide/

7) Extraction planning (line-pull reserves)

· Temporary works and contaminated soils require conservative extraction planning:

  • · Check the max line-pull (kN/ton) for your SGV model; size the lifting gear accordingly.

  • · Plan for reverse-vibration sequences on locked sheets; keep hose routing protected during high-angle pulls.

Spec tables with line-pull → https://www.powerquip.co.kr/products/vibro-hammer/specification/


8) Lead time, spares, commissioning (U.S. delivery)

  • · Typical lead time: project/region dependent; align model and clamp kit early with submittal approvals.

  • · Spares: jaws, elastomers, hose sets, filters; keep a first-month kit on site.

  • · Commissioning & training: verify frequency adjust, clamp pressure checks (300–320 bar), and daily inspection routines.

Start your RFQ → https://www.powerquip.co.kr/contact-us/


9) U.S. use-case snapshots (spec-driven picks)

  • · DOT river bridge cofferdam (sheet piles, medium sands): SGV 400–600 + suppressor; PQ-600V class; universal clamp 130U–160U.

  • · Harbor pipe piles (Ø large, tidal): SGV 1000; double/quad casing clamp; high-capacity cooling; pendant-based frequency ramp-up.

  • · Urban H-pile foundations (noise envelope): SGV 300–400 with silence housing; VPM ≈ 1,730–1,900 tuned during monitoring.


10) Technical FAQs (spec & RFQ)

Q1. How do I choose EM/CF?
Start from pile type + embedment; check soils and required amplitude. If penetration stalls at compliant VPM, step up EM/CF before overspeeding.

Q2. Which clamp for mixed programs?
Urban walls + occasional casing: universal sheet clamp as baseline, plus double casing clamp kit with auto-locking beam for one-minute swaps.

Q3. What’s the fastest way to confirm fit?
Send pile type/size, target depth, soil brief, and site constraints (noise, access). You’ll receive a model + power-pack match.

RFQ → https://www.powerquip.co.kr/contact-us/


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