Batch 09 Literature Synthesis (Files 1811-1880)

Individual Source Summaries

Foundations and Soil Dynamics

#	Author(s)	Year	Title	Core Finding	Method	Tags
1	ASCE	2007	Sloping Ground AEP 765 kV Transmission Line LRFD Foundations	LRFD approach for transmission line foundations on sloping ground	Design standard / LRFD	transmission-line, LRFD, foundation-design
2	Yoshimi, Richart, Prakash, Barkan & Ilyichev	1977	Soil Dynamics and Its Application to Foundation Engineering	Comprehensive review of soil dynamics: stress-strain relationships, wave propagation, and machine foundation design	Literature review / ICSMFE session	soil-dynamics, stress-strain, foundation-engineering
3	Taeseri, Laue, Martakis, Chatzi & Anastasopoulos	2018	Static and dynamic rocking stiffness of shallow footings on sand: centrifuge modelling	Centrifuge tests confirm classical Gazetas formulas for small-strain rocking stiffness; novel SASW + impulse actuator technique developed	Centrifuge modelling, SASW, FFT	rocking-stiffness, centrifuge, shallow-foundation, SASW
4	Taeseri et al.	2018	(Duplicate of #3)	Same as #3	Same	Same
5	Petersen	2014	Scour around Offshore Wind Turbine Foundations (PhD thesis)	Comprehensive treatment of scour processes around OWT foundations in sandy seabeds	PhD thesis / experimental + analytical	scour, OWT, monopile, sandy-seabed
6	TransGrid	2018	Transmission Line Design Standard (AS/NZD)	Performance design parameters for overhead transmission lines on the TransGrid network	Design standard	transmission-line, design-standard, Australia
7	Vesic	1973	Analysis of Ultimate Loads of Shallow Foundations	Unified bearing capacity formulation incorporating Prandtl-Reissner-Terzaghi framework with shape, depth, and inclination factors	Analytical (plasticity theory)	bearing-capacity, shallow-foundation, classical-theory
8	Gerolymos & Gazetas	2006	Winkler Model for Lateral Response of Rigid Caisson Foundations in Linear Soil	Four-spring Winkler model with closed-form expressions for static/dynamic caisson response; validated against 3D FE	Analytical + FEM validation	Winkler, caisson, SSI, lateral-response

Scour and Dynamic Response of OWT Foundations

#	Author(s)	Year	Title	Core Finding	Method	Tags
9	van der Tempel, Zaaijer & Subroto	2004	Effects of Scour on OWT Design	Scour 0-13 m requires longer pile but does not critically affect dynamics/fatigue when resonance is avoided	Parametric design study (2.75 MW turbine, 20 m water)	scour, natural-frequency, fatigue, monopile
10	van der Tempel & Molenaar	2002	Wind Turbine Structural Dynamics Review	Integrated dynamic design essential; soft-soft/soft-stiff placement governs cost and fatigue; extends Opti-OWECS approach	Analytical review	structural-dynamics, soft-stiff, OWT, integrated-design
11	Futai, Dong, Haigh & Madabhushi	2018	Dynamic Response of Monopiles in Sand Using Centrifuge Modelling	First centrifuge measurement of monopile fn; SSI at correct stress level is essential for obtaining true natural frequency; 1g tests unreliable	Centrifuge + piezo-actuator + FFT	monopile, natural-frequency, centrifuge, SSI
12	Futai, Haigh & Madabhushi	2021	Comparison of Monopile and GBF Dynamic Responses (centrifuge)	Both monopile and GBF fn reduce substantially from fixed-base values; SSI must be included	Centrifuge + piezo-actuator	GBF, monopile, natural-frequency, centrifuge
13	Jawalageri, Prendergast, Jalilvand & Malekjafarian	2022	Effect of Scour Erosion on Mode Shapes of 5 MW OWT	Second mode shape more sensitive to scour than first; MAC values track scour progression; FDD approach viable under operational conditions	Numerical (OpenFAST + SESAM, p-y springs)	scour, mode-shapes, FDD, MAC, monopile
14	Kariyawasam, Middleton, Madabhushi, Haigh & Talbot	2020	Bridge Natural Frequency as Scour Indicator (centrifuge)	Up to 40% fn change for 30% embedment loss; deep foundations more sensitive than shallow; global scour slightly more detectable than local	Centrifuge (1/60 scale integral bridge)	scour, natural-frequency, bridge, centrifuge, SHM

Suction Bucket and Tripod Foundations

#	Author(s)	Year	Title	Core Finding	Method	Tags
15	DJ Kim, Choo, JH Kim, S Kim & DS Kim	2014	Monotonic and Cyclic Behavior of Tripod Suction Bucket (centrifuge)	Tripod moment-rotation is bilinear vs. monopod gradual; cyclic loads below yield moment cause negligible plastic deformation	Centrifuge at KAIST	tripod, suction-bucket, cyclic, centrifuge
16	Doherty, Houlsby & Deeks	2005	Stiffness of Flexible Caisson Foundations in Nonhomogeneous Soil	Scaled boundary FEM + shell elements provide elastic stiffness coefficients accounting for skirt flexibility and soil nonhomogeneity	Scaled boundary FEM	caisson, elastic-stiffness, nonhomogeneous-soil
17	Taeseri, Laue & Anastasopoulos	2019	Non-linear Rocking Stiffness of Embedded Foundations in Sand	51 centrifuge tests + 3D FE; extended Gazetas formula for inhomogeneous sidewall soil; Kr degrades with Fs; normalised stiffness degradation curves proposed	Centrifuge + FEM parametric	rocking-stiffness, nonlinear, embedded-foundation, centrifuge
18	YH Jeong, Lee & JH Kim	2021	Cyclic Behavior of OWT with Tripod Foundation (centrifuge)	Centrifuge evaluation of cyclic performance of tripod suction bucket under realistic OWT loading	Centrifuge modelling	tripod, cyclic, centrifuge, OWT
19	YH Jeong, JH Kim, Ko & Park	2021	Simplified Rotational Stiffness of Tripod Foundation Under Cyclic Loading	Rotational stiffness estimable from cross-section geometry + soil shear modulus; long-term stiffness predicted from single-bucket cyclic tests	Analytical + centrifuge validation	tripod, rotational-stiffness, cyclic, simplified-method

Centrifuge Testing Equipment

#	Author(s)	Year	Title	Core Finding	Method	Tags
20	Cabrera, Caicedo & Thorel	2014	Dynamic Actuator in Centrifuge (ICPMG)	Piezoelectric actuator mounted on model structure enables controlled SSI excitation in centrifuge without external supports	Centrifuge + piezoelectric actuator	actuator, centrifuge, SSI, instrumentation
21	Cabrera, Caicedo & Thorel	2012	Dynamic Actuator for Centrifuge Modeling of SSI	Design and validation of amplified piezoelectric actuator for wide-band dynamic loading in centrifuge	Geotechnical Testing Journal	actuator, centrifuge, SSI, piezoelectric

Wave and Geophysical Testing

#	Author(s)	Year	Title	Core Finding	Method	Tags
22	Nazarian, Stokoe & Hudson	~1983	SASW Method for Moduli and Thicknesses of Pavement Systems	SASW provides unique solution; agrees with crosshole but not Dynaflect back-calculation	SASW field testing	SASW, shear-modulus, nondestructive-testing
23	Zeghal & Elgamal	1994	Stress-Strain Loop / Site Liquefaction Analysis	Approach for extracting stress-strain loops from downhole array records during earthquakes	Field records + signal processing	liquefaction, stress-strain, earthquake-records

Design Standards and Guidelines (UFC Series)

#	Source	Year	Topic	Tags
24-36	US DoD UFC series	2001-2022	13 UFC documents covering: high performance buildings (1-200-02), civil engineering (3-201-01), geotechnical (3-220-01), backfills (3-220-04FA), structural (3-301-01), accidental explosions (3-340-02), mechanical (3-401-01), noise/vibration (3-450-01), exterior power distribution (3-550-01, 3-550-07), waterfront maintenance (4-150-07), moorings (4-150-09), waterfront construction (4-151-10), piers/wharves (4-152-01), railroad (4-860-01)	UFC, military-standard, design-criteria
37	CEFAS/MCEU	2004	Offshore Wind Farms EIA Guidance (FEPA/CPA)	EIA, offshore-wind, environmental
38	Fischer, de Vries & Schmidt (UpWind)	2010	UpWind Design Basis WP4: Offshore Foundations	design-basis, North-Sea, OWT
39	Ramboll/PSA Norway	2022	Digital Solutions and SHM for Offshore Structural Integrity	SHM, digital-twin, offshore, integrity-management
40	NAVFAC	2012	Handbook for Marine Geotechnical Engineering (SP-2209-OCN)	marine-geotech, NAVFAC, handbook

Scour for Bridges

#	Author(s)	Year	Title	Core Finding	Method	Tags
41-43	Schuring, Dresnack & Golub	2017	Design and Evaluation of Scour for Bridges Using HEC-18 (Vols 1-3)	Comprehensive NJDOT scour evaluation methodology applying HEC-18	Field + HEC-18 analysis	bridge-scour, HEC-18, FHWA
44	Biscarini et al.	2021	Vulnerability of Hydraulic Constructions in Flood-Prone Areas	Vulnerability framework for hydraulic infrastructure under flooding	Numerical + GIS	flood, vulnerability, hydraulic-structures

Korean Research Reports and Standards

#	Author(s)	Year	Title	Core Finding	Tags
45	Ryu, Lee, Lee & Seo	2022	Suction Pile Confinement Effect via Natural Frequency	fn increases linearly with penetration depth due to soil confinement; new low-frequency excitation method needed for 0-5 Hz range	suction-bucket, natural-frequency, field-test
46-47	Korean govt. reports	~2015	Natural Frequency Analysis of Suction Foundation OWT Systems	SSI stiffness matrix critical for fn; Campbell diagram resonance avoidance mandatory	natural-frequency, suction-bucket, aeroFLEX
48	Yoon	2020	Sinkhole Occurrence via Unsaturated Soil Mechanics (numerical)	Numerical analysis of ground subsidence near cavities in unsaturated soil	sinkhole, unsaturated-soil, numerical
49	EJ Tech / Korea Univ. / Kyungsung Univ.	2019	3 MW OWT SHM Using Fiber Optic Sensors	Fiber optic SHM system for offshore wind support structure health evaluation	SHM, fiber-optic, OWT, Korea
50	Kwak, Park, Chung & Woo	~2005	Bridge Scour Prioritization and Management System	GIS-based scour vulnerability rating (6 grades); Korea-specific scour characteristics	bridge-scour, GIS, Korea, management
51	Korean Ministry	2014	Foundation Design Standard (Korea)	Korean code for shallow/deep foundations, site investigation, bearing capacity	design-standard, Korea, foundation
52	Plodpradit, Kwon, Dinh, Murphy & Kim	2020	Suction Bucket Pile-Soil-Structure Interaction of OWT Jacket (coupled analysis)	Jeanjean p-y method yields higher fn than API; soil spring type significantly affects forced vibration response	Coupled FEM (X-SEA)
53-54	Han et al. (KICT)	2013-2014	Bearing Capacity of Plant Vibrating Machine Foundations	Current ACI/Korean code halving of bearing capacity is overly conservative; centrifuge + numerical study of dynamic bearing capacity	Centrifuge + FEM
55	Jeong & Lee (KEI)	2018	Benefit-Sharing System for Renewable Energy Acceptance	Community participation and benefit-sharing improve renewable energy social acceptance	Policy study
56-60	Cho et al. (KICT)	2011-2015	Large-Diameter Deep-Water OWT Foundation System (5 m dia, 60 m depth)	Development of monopile + bucket foundation design/construction manuals for Korean offshore conditions (Jeju rock seabed)	R&D reports (design + field)
61	Korean Ministry	2016	Road Bridge Design Standard - Cable Bridge (LRFD)	LRFD-based cable bridge design including wind, seismic, and ship collision	Design standard

---

SYNTHESIS

CONSENSUS

1. SSI governs natural frequency. Futai (2018, 2021), Kariyawasam (2020), Taeseri (2018), Korean government reports, and Plodpradit (2020) all confirm that fixed-base assumptions substantially overpredict fn. Soil-structure interaction must be included for reliable dynamic design of OWTs and bridges.

2. Centrifuge modelling is the gold standard for SSI validation. Seven sources (Taeseri 2018/2019, Futai 2018/2021, DJ Kim 2014, Kariyawasam 2020, YH Jeong 2021) use centrifuge testing and unanimously find that 1g testing is inadequate for stress-dependent behaviour. Centrifuge results consistently validate or extend classical analytical formulas (Gazetas).

3. Scour reduces fn and changes mode shapes. van der Tempel (2004), Jawalageri (2022), and Kariyawasam (2020) agree that scour lowers natural frequency. Kariyawasam quantifies up to 40% fn reduction for 30% embedment loss.

4. Winkler/p-y spring models remain the workhorse. Gazetas (2006), Jawalageri (2022), Plodpradit (2020), and Doherty (2005) all employ spring-based foundation models, confirming their reliability when properly calibrated.

DEBATES

1. p-y curve formulation: Plodpradit (2020) shows API vs. Jeanjean methods yield different mode shapes and fn values. No consensus exists on which p-y formulation is most appropriate for large-diameter monopiles or suction buckets.

2. Conservatism in dynamic bearing capacity: Korean reports (Han et al. 2013-2014) argue the standard practice of halving bearing capacity under vibration (ACI 351, Korean code) is overly conservative, but no replacement consensus has emerged.

3. Local vs. global scour sensitivity: Kariyawasam (2020) finds global scour slightly more detectable than local, while most OWT studies focus on local scour depth as the design parameter. The interplay remains under-explored.

GAPS

1. Scour + cyclic loading interaction: No source in this batch combines scour progression with long-term cyclic loading effects on stiffness degradation -- each is studied in isolation.

2. Tripod/multi-bucket long-term stiffness: Jeong (2021) proposes simplified rotational stiffness estimation, but field validation under decades of cyclic loading is absent.

3. SHM-to-design feedback loop: Ramboll (2022) and the Korean fiber optic study (2019) describe monitoring systems, but no source demonstrates a closed-loop where SHM data updates the structural model or triggers intervention.

4. Non-sandy soil conditions: Most centrifuge and scour studies are conducted in sand. Silty, clayey, and layered seabeds remain underrepresented despite their prevalence in Asian offshore sites (acknowledged by DJ Kim 2014).

5. Large-diameter monopile (>8 m) dynamic behaviour: Futai (2018) tested monopiles at centrifuge scale, but the emerging XL monopiles (10+ m) lack centrifuge validation at correct stress levels.

METHODS INVENTORY

Method	Sources	Strengths	Limitations
Centrifuge modelling	Taeseri, Futai, DJ Kim, Kariyawasam, YH Jeong, Cabrera, Han	Correct stress levels; repeatable	Scale effects for very large piles; limited soil layering
Winkler/p-y spring models	Gazetas, Jawalageri, Plodpradit, Doherty	Fast; extensible to nonlinear; closed-form available	Calibration-dependent; choice of p-y formulation matters
3D FEM	Taeseri (2019), Doherty (2005)	Full stress field; any geometry	Computationally expensive; mesh sensitivity
SASW / surface wave	Nazarian, Taeseri	Nondestructive; unique solution for layered profiles	Requires flat surface; frequency-dependent resolution
OpenFAST + SESAM coupled	Jawalageri (2022)	Full aero-hydro-servo-elastic coupling	Complex setup; p-y model dependency
Piezoelectric actuators	Cabrera (2012, 2014), Futai (2018, 2021)	Wide-band; no external support needed; compact	Limited force output; requires careful calibration
FDD / MAC modal analysis	Jawalageri (2022), Kariyawasam (2020)	Output-only identification from operational data	Noise sensitivity; requires multiple sensors

BENCHMARKS

Benchmark	Value	Source
fn sensitivity to scour (bridge, deep foundation)	Up to 40% reduction per 30% embedment loss	Kariyawasam (2020)
fn sensitivity to scour (shallow foundation)	Lower than deep foundations	Kariyawasam (2020)
Second mode shape sensitivity to scour	More sensitive than first mode	Jawalageri (2022)
Suction bucket fn vs. penetration depth	Linear increase with depth (confinement effect)	Ryu et al. (2022)
Tripod yield rotation	~20% of monopod yield rotation	DJ Kim (2014)
Tripod yield moment	~50% of monopod yield moment	DJ Kim (2014)
Monopile fn deviation from fixed-base	Substantial reduction (study-specific)	Futai (2018, 2021)
Jeanjean vs. API fn	Jeanjean yields higher fn than API	Plodpradit (2020)