7.2 Ingenieurbau
Filtern
Dokumenttyp
- Vortrag (164)
- Beitrag zu einem Tagungsband (67)
- Zeitschriftenartikel (16)
- Posterpräsentation (10)
- Dissertation (4)
- Beitrag zu einem Sammelband (3)
- Buchkapitel (2)
- Tagungsband (Herausgeberschaft für den kompletten Band) (1)
- Sonstiges (1)
Sprache
- Englisch (193)
- Deutsch (74)
- Mehrsprachig (1)
Referierte Publikation
- nein (268) (entfernen)
Schlagworte
- Structural Health Monitoring (22)
- Ground vibration (18)
- Fatigue (12)
- Offshore wind energy (11)
- Structural health monitoring (11)
- Monitoring (10)
- Brücken (9)
- Offshore (9)
- Impact (8)
- Building vibration (7)
- Damage characterization (7)
- Planar tomography (7)
- Vibration measurements (7)
- Bahnerschütterungen (6)
- Design methods (6)
- Deterioration (6)
- Hammer impact (6)
- Layered soil (6)
- Model interpolation (6)
- Numerical modelling (6)
- Offshore wind turbines (6)
- Physical phenomenology (6)
- Pile foundations (6)
- Soil-structure interaction (6)
- Structural systems (6)
- Grout (5)
- Inspection (5)
- Numeric simulation (5)
- Reinforced concrete structure (5)
- SHM (5)
- Train passage (5)
- Train-induced ground vibration (5)
- Vibration (5)
- Bayesian updating (4)
- Container loading (4)
- Crack detection (4)
- Damage detection (4)
- Datenmanagement (4)
- Drop test (4)
- Environmental effects (4)
- Erschütterungen (4)
- Erschütterungsminderung (4)
- Excitation forces (4)
- Foundation load (4)
- Foundations (4)
- Gründungsstrukturen (4)
- High-strength concrete (4)
- Interface (4)
- Layered soils (4)
- Modalanalyse (4)
- Reliability (4)
- Repair (4)
- Shell Buckling (4)
- Slab track (4)
- Steel structures (4)
- Temperature rejection (4)
- Ultrasonic testing (4)
- Vehicle-track-soil interaction (4)
- Wind Energy (4)
- Windenergie (4)
- BIM (3)
- Belastungsversuch (3)
- Bridges (3)
- Buckling (3)
- Compaction Grouting (3)
- Damage localization (3)
- Deep foundations (3)
- Dispersionsmessung (3)
- Elastische Gleiselemente (3)
- Emission (3)
- Erosion (3)
- Erschütterungsprognose (3)
- Fault detection (3)
- Großer Fallturm Horstwalde (3)
- Inspection planning (3)
- Leichtbau (3)
- Maintenance (3)
- Material moisture (3)
- Mitigation (3)
- Monopiles (3)
- Offshore Pile Foundation (3)
- Offshore Windenergieanlagen (3)
- Offshore foundations (3)
- Offshore geomechanics (3)
- Physical testing (3)
- Probabilistic (3)
- Reinforced concrete (3)
- Schwingungsdynamik (3)
- Subspace methods (3)
- Temperature effects (3)
- Train speed (3)
- Tunnel (3)
- Vibration measurement (3)
- Wellengeschwindigkeit (3)
- Wind (3)
- Zivile Sicherheit (3)
- 2-span bridge (2)
- AISTEC (2)
- Acceleration sensors (2)
- Acoustic emission testing (2)
- Amplitude-charge weight laws (2)
- Amplitude-distance laws (2)
- Analysis of variance (2)
- Ansys Autodyn (2)
- Apartment building (2)
- Artificial intelligence (2)
- Attenuation (2)
- Automatisierte schweißtechnische Fertigung (2)
- Axle-sequence spectrum (2)
- Bayes'sche Analyse (2)
- Bayesian System Identification (2)
- Bayesian methods (2)
- Bemessung (2)
- Big Data (2)
- Bitumen (2)
- Bodenübertragungsfunktion (2)
- Box-Behnken (2)
- Brücke (2)
- Cable failure (2)
- Cable-stayed bridge (2)
- Changing process noise (2)
- Chemisoprtion (2)
- Climate chamber (2)
- Compressive Cyclic loading (2)
- Compressive cyclic loading (2)
- Compressive strength (2)
- Coupled fluid-particle simulation (2)
- Coupler systems (2)
- Crack formation (2)
- Crack pattern (2)
- Cracks (2)
- Cyclic load (2)
- DEM (2)
- DUCON® (2)
- Design (2)
- Digital twin (2)
- Displacements (2)
- Drone (2)
- Drucker-Prager (2)
- Ductility (2)
- E-modulus (2)
- Earth masonry (2)
- Elastische Elemente (2)
- Energy (2)
- Erschütterungsausbreitung (2)
- Evaluation (2)
- Explosion-induced ground vibrations (2)
- Faseroptik (2)
- Feuchte (2)
- Filter effects (2)
- Finite Elemente Simulation (2)
- Finite element models (2)
- Fly ash (2)
- Freight train (2)
- GPU parallel computation (2)
- Gleiströge (2)
- Ground vibration measurements (2)
- Grouted Connection (2)
- Grouted connection (2)
- Grouting (2)
- Halbraum (2)
- High-performance computing (2)
- High-speed (2)
- High-speed train (2)
- Immission (2)
- Injection Sequence (2)
- Irregularities (2)
- Klimakammer (2)
- Knudsen effect (2)
- Laboratory beam structure (2)
- Lehm (2)
- Linear parameter varying systems (2)
- Load vector (2)
- Long-term shrinkage (2)
- Macromechanical Sample Strength (2)
- Material tests (2)
- Mauerwerk (2)
- Measurement (2)
- Measurements (2)
- Messen im Bauwesen (2)
- Metakaolin (2)
- Micro silica (2)
- Micro-reinforcement (2)
- Micromechanical Tensile Failure (2)
- Micromechanical modelling (2)
- Mobile elements (2)
- Modal Analysis (2)
- Molecular diffusion (2)
- Non destructive testing (2)
- Non-destructive testing (2)
- Numerical model (2)
- Numerical modeling (2)
- Office tower (2)
- Offshore Wind Energy (2)
- Offshore geotechnics (2)
- Offshore wind (2)
- Offshore wind turbine (2)
- Offshore-Windenergieanlagen (2)
- Optimal Sensor Placement (2)
- Passenger train (2)
- Physisorption (2)
- Pile Foundation (2)
- Pile Tip Buckling (2)
- Post-impact evaluation (2)
- Prediction (2)
- Prediction of explosion induced ground and building vibration (2)
- Prädiktive Instandhaltung (2)
- Quasi-static and dynamic tests (2)
- Radar (2)
- Railway (2)
- Railway bridge (2)
- Railway tunnel (2)
- Railways (2)
- Randomly heterogeneous soil (2)
- Rehabilitation (2)
- Reinforcement (2)
- Research data management (2)
- Risk (2)
- Risslumineszenz (2)
- SDDLV (2)
- Scattering (2)
- Schadensdetektion (2)
- Schwingungsbasierte Verfahren (2)
- Size effect (2)
- Slenderness effect (2)
- Soil properties (2)
- Soil-Structure-Interaction (2)
- Soil-pile interaction (2)
- Soil-wall-floor model (2)
- Static load (2)
- Statistical evaluation (2)
- Statistical method (2)
- Stereo photogrammetry (2)
- Subspace-based method (2)
- Subspace-based residual (2)
- Suction bucket (2)
- Supplementary cementitious materials (2)
- Surface-tunnel reduction (2)
- System Identification (2)
- Tensile Capacity (2)
- Time-variant reliability (2)
- Tomographic damage evaluation (2)
- Track damage (2)
- Train excitation (2)
- Transmission (2)
- UHPC (2)
- Umwelteinflüsse (2)
- Unterraummethoden (2)
- Value of Information (2)
- Vehicle-track interaction (2)
- Vibrations (2)
- Vollraum (2)
- Wellenausbreitung (2)
- Wellenausbreitung in der Tiefe (2)
- Wind Turbines (2)
- Windenergy (2)
- Zuggeschwindigkeit (2)
- Zuverlässigkeit (2)
- 3D imaging (1)
- Achsfolgespektren (1)
- Achsimpulse (1)
- Amplituden-Abstands-Gesetze (1)
- Analytical Design Methods (1)
- Artificial Intelligence (1)
- Asphalt (1)
- Assessment (1)
- Asymptotic local approach (1)
- Automatic modal parameters identification (1)
- Automatisierte Fertigung (1)
- Automatisierte schweißtechniche Fertigung (1)
- Axial load bearing (1)
- Axle impulses (1)
- Axle loads (1)
- Axle pulses (1)
- BAM Windenergie Fügetechnik (1)
- Bahngleis (1)
- Ballast track (1)
- Base isolation (1)
- Baugrunddynamik (1)
- Bauteile (1)
- Bauwerk-Boden-Wechselwirkung (1)
- Bauwerke (1)
- Bauwerksmonitoring (1)
- Bauwerksüberwachung (1)
- Bayesian analysis (1)
- Bayesian system identification (1)
- Beanspruchungszustand (1)
- Belastungsfahrt (1)
- Belastungszug (1)
- Beton (1)
- Betonautobahn (1)
- Betonautobahnen (1)
- Beulen (1)
- Bewertung (1)
- Bionik (1)
- Blast (1)
- Blast tests (1)
- Bodenschlitz (1)
- Bodenvariabilität (1)
- Boundary element method (1)
- Bridge (1)
- Bridge monitoring (1)
- Bruchlastwechselzahlen (1)
- Brückensicherheit (1)
- Buckling piles circular shells (1)
- Building information modelling (1)
- Building response (1)
- Bulging (1)
- CFD (1)
- Cars (1)
- Centerline solidification cracking (1)
- Chemisorption (1)
- Civil structures (1)
- Climate Chamber (1)
- Cohesive soils (1)
- Column/wall resonance (1)
- Combined finite-element boundary-element method (1)
- Components of excitation (1)
- Computer Vision (1)
- Concrete (1)
- Conductor (1)
- Crack (1)
- Crack Luminescence (1)
- Crack growth (1)
- Crack repair (1)
- Cyclic axial shearing (1)
- Cyclic degradation (1)
- DEM-LBM simulation (1)
- Damage Detection (1)
- Damage identification (1)
- Deckeneigenfrequenzen (1)
- Deckenschwingungen (1)
- Design models (1)
- Design practice (1)
- Detection (1)
- Digital Image Correlation (1)
- Digital Models (1)
- Digital Twin (1)
- Digitale Zwillinge (1)
- Digitalisierung (1)
- Drop Test (1)
- Drop Tests (1)
- Drop tower (1)
- Druckfestigkeit (1)
- Druckschwellenversuch (1)
- Dynamic loads (1)
- Dynamic soil properties (1)
- Dynamische Bodenkennwerte (1)
- Dynamische Bodensteifigkeit (1)
- Dämpfung (1)
- EERA Joint Program (1)
- Earth (1)
- Earth material (1)
- Earthen hydraulic constructions (1)
- Earthen hydraulic infrastructures (1)
- Einflusslinie (1)
- Einflusslinien (1)
- Einfügungsdämmung (1)
- Elastische Gebäudelagerung (1)
- End-of-life decision making (1)
- Entscheidungsfindung (1)
- Environmental (1)
- Environmental Effects (1)
- Environmental influence (1)
- Erhaltungsmanagement (1)
- Ermüdungsprüfung (1)
- Ermüdungsschäden (1)
- Ermüdungsverhalten (1)
- Erneuerbare Energien (1)
- Erosion of cohesive soils (1)
- Erschütterungen im Fernfeld (1)
- FEM (1)
- FEM analysis (1)
- Fahrzeug-Fahrweg-Boden-Wechselwirkung (1)
- Fallturm (1)
- Fatigue damage (1)
- Fatigue deterioration (1)
- Fiber optic sensing (1)
- Finite element method (1)
- Finite element model updating (1)
- Finite-Elemente-Modellkalibrierung (1)
- Flexibility (1)
- Flexible car body (1)
- Flexible wheelset (1)
- Floor resonance (1)
- Floors (1)
- Fluid-structure interaction (1)
- Footbridge (1)
- Force reconstruction (1)
- Foundation Pile (1)
- Foundation reliability analysis (1)
- Freileitung (1)
- Frequency response function (1)
- GMNIA (1)
- GNSS (1)
- GPU parallelisation (1)
- Gebäudelagerung (1)
- Gebäudemodelle (1)
- Gebäudeschwingungen (1)
- Geomechanics (1)
- Geomechanics of offshore foundations (1)
- Geometrie (1)
- Global ambient vibrations (1)
- Granular Cohesive Materials (1)
- Granular Cohesive Materials, (1)
- Ground (1)
- Grout Injection (1)
- HTLS (1)
- Hard impact (1)
- Harter Anprall an Stahlbetonstrukturen (1)
- High-Rise Building (1)
- High-rise buildings (1)
- Horizontal stress (1)
- IEPE (1)
- Impact damage of reinforced concrete (1)
- Impact damage on reinforced concrete (1)
- Impakt (1)
- Impedanzmethode (1)
- Inertial Interaction (1)
- Inertial interaction (1)
- Inhomogeneous soils (1)
- Innovative Messtechnik (1)
- Inspeciton (1)
- Inspektion (1)
- Interface model (1)
- Irregular ballast (1)
- Irregular soil (1)
- Jacket support structure (1)
- Jet erosion test (1)
- Kinematic Interaction (1)
- Kinematic interaction (1)
- Kraft auf den Boden (1)
- LBM-DEM (1)
- LBM-DEM coupling (1)
- LBM-DEM simulation (1)
- Laminography (1)
- Laser beam welding (1)
- Lateral load bearing (1)
- Leichtbauprinzipien (1)
- Load Test (1)
- Load bearing behaviour (1)
- Load-bearing (1)
- Long-span bridge (1)
- Low-frequency shaker (1)
- Luminescence (1)
- MEMS (1)
- Maintal Bridge Gemuenden (1)
- Maintalbrücke Gemünden (1)
- Marine geomechanics (1)
- Marine geotechnics (1)
- Maschinenbetrieb (1)
- Material Point Method (1)
- Material model (1)
- Measurement campaigns (1)
- Mechanical challenges (1)
- Messfahrt (1)
- Microfine cement (1)
- Micromechanical LBM-DEM simulation (1)
- Micromechanical analysis (1)
- Micromechanical simulation (1)
- Minderungsmaßnahmen (1)
- Mix design (1)
- Modal force spectrum (1)
- Modal load spectrum (1)
- Modal system identification (1)
- Model Update (1)
- Model updating (1)
- Modellierung (1)
- Modes (1)
- Modes and waves (1)
- Moisture (1)
- Monopile (1)
- Monopile Buckling (1)
- Monopile installation risks (1)
- Movin load test (1)
- Multi-beam method (1)
- Multiple impact (1)
- NDT (1)
- Nachgiebigkeiten (1)
- Nelson’s method (1)
- Non-Destructive Evaluation (1)
- Normung (1)
- Numerical analysis (1)
- Numerical damage simulation (1)
- Numerical simulation (1)
- Numerical simulation of impact damage (1)
- Numerical simulations (1)
- Offhore (1)
- Office building (1)
- Offshore Structures (1)
- Offshore Wind (1)
- Offshore Wind Energy Converter (1)
- Offshore Windenergie (1)
- Offshore pile foundations (1)
- Offshore wind energy foundations (1)
- Offshore wind farm (1)
- Offshore wind farms (1)
- Offshore wind-turbine foundations (1)
- Offshore-Wind (1)
- Operational modal analysis (1)
- Optimierungsmethoden (1)
- Optimization techniques (1)
- Pfahlfußbeulen (1)
- Pfahlnachgiebigkeiten (1)
- Physisoprtion (1)
- Pile Buckling (1)
- Pile Capacity (1)
- Pile ageing (1)
- Pile groups (1)
- Pile retrofit system (1)
- Pile-Tip-Buckling (1)
- Point Cloud (1)
- Predictive maintenance (1)
- Probabilistic modelling (1)
- Probabilitische Ingenieurmodelle (1)
- Probability of Detection (1)
- Probability of detection (1)
- Probekörpergeometrien (1)
- Prognose (1)
- Propagation from a tunnel (1)
- Railbridge (1)
- Railway induced vibration (1)
- Railway track (1)
- Railway tracks (1)
- Railway trafiic (1)
- Randelementmethode (1)
- Rayleighwellendispersion (1)
- Rechenmodelle (1)
- Rechenverfahren (1)
- Repowering (1)
- Residential building (1)
- Residual evaluation (1)
- Richtige Fahrzeugmasse (1)
- Rigid vehicle model (1)
- Risiko (1)
- Risikoanalyse (1)
- Risk-based maintenance planning (1)
- Rissprozes (1)
- Rissprozess (1)
- Road bridges (1)
- SHM Environmental (1)
- Safety (1)
- Scaling (1)
- Scattered axle impulses (1)
- Schadensüberwachung (1)
- Scherwellengeschwindigkeit (1)
- Schienenfahrweg (1)
- Schienenfahrwege (1)
- Schubmodul (1)
- Schwingungsmessungen (1)
- Schwingungsmonitoring (1)
- Schädigungsprozesse (1)
- Sensitivity vectors (1)
- Shearing (1)
- Shrinkage (1)
- Sicherheit (1)
- Simple and fast prediction (1)
- Simple prediction (1)
- Simulation and experiment (1)
- Site-characterization (1)
- Soft impact (1)
- Soft track elements (1)
- Soil Struture Interaction (1)
- Soil erosion (1)
- Soil-building interaction (1)
- Soil-building resonance (1)
- Soil-wall floor model (1)
- Soil-water-structure interaction (1)
- Spatially varying ground conditions (1)
- Spektralanalyse (1)
- Stability Buckling soil-structure-interaction piles offshore (1)
- Stabilität (1)
- State of stress (1)
- Statistical correlations (1)
- Statistical tests (1)
- Statistische Auswertung (1)
- Statistische Korrelationen (1)
- Stochastic Subspace Damage Detection (1)
- Strength (1)
- Stress stiffening (1)
- Structural Systems (1)
- Structural integrity (1)
- Structural integrity maintenance (1)
- Structural integrity management (1)
- Strukturmonitoring (1)
- Störgrößen (1)
- Substructures (1)
- Support structures (1)
- Surface Foundation (1)
- Surface line (1)
- Switch (1)
- System identification (1)
- Systemidentifikation (1)
- TOP (1)
- Tagung (1)
- Temperatureinflüsse (1)
- Tensile test (1)
- Test specification (1)
- Tip Buckling (1)
- Track and vehicle irregularities (1)
- Track beam (1)
- Track damage monitoring (1)
- Track damage quantification (1)
- Track vibration (1)
- Track-soil interaction (1)
- Tragfähigkeit (1)
- Tragstrukturen (1)
- Train configuration (1)
- Train passages (1)
- Tran speed (1)
- Transfer fuction (1)
- Transfer function (1)
- Truss structures (1)
- Tunnel line (1)
- Tunnel-pile transfer (1)
- Tunnelstrecke (1)
- Turnout (1)
- Un- certainty (1)
- Uncertainty (1)
- Uncertainty in reference (1)
- Uncertainty quantification (1)
- Under-sleeper pads (1)
- Varying soil stiffness (1)
- Varying stiffness (1)
- Varying track stiffness (1)
- Vibration analysis (1)
- Vibration excitation (1)
- Vibration monitoring (1)
- Wahrscheinlichkeit (1)
- Water-structure interaction (1)
- Wave-Tower interaction (1)
- Wavenumber integrals (1)
- Wavenumber method (1)
- Waves (1)
- Welded (1)
- Wellenfeldberechnung (1)
- Wheelset accelerations (1)
- Wind Energy Structures (1)
- Wind energy (1)
- Wind turbines (1)
- Wind-farm aerodynamics (1)
- Windenergieanlagen (1)
- Windfarm wake analysis (1)
- Zerstreute Achsimpulse (1)
- building information modelling (1)
- elastische Gebäudelagerungen (1)
- fachwerkartige Stahltragwerken (1)
- risk, reliability, inspection planning, offshore wind turbines (1)
- structural health monitoring (1)
- structural integrity management (1)
- support structures (1)
- zerstreute Achslastimpulse (1)
- Übertragungsmatrizen (1)
- Überwachung (1)
Organisationseinheit der BAM
- 7.2 Ingenieurbau (268) (entfernen)
Subspace-based damage detection handling temperature effects and uncertainty in the reference
(2019)
Temperature variation can be a nuisance that perturbs vibration based structural health monitoring (SHM)approaches for civil engineering structures. In this paper, temperature affected vibration data is evaluated within a stochastic damage detection framework, which relies on a null space based residual. Besides two existing temperature rejection approaches – building a reference state from an averaging method or a piecewise method – a new approach is proposed, using model interpolation. In this approach, a general reference model is obtained from data in the reference state at several known reference temperatures. Then, for a particular tested temperature, a local reference model is derived from the general reference model. Thus, a well fitting reference null space for the formulation of a residual is available when new data is tested for damage detection at an arbitrary temperature. Particular attention is paid to the computation of the residual covariance, taking into account the uncertainty related to the null space matrix estimate. This improves the test performance, contrary to prior methods, for local and global damages, resulting in a higher probability of detection (PoD) for the new interpolation approach compared to previous approaches.
Fault detection for linear parameter varying systems under changes in the process noise covariance
(2020)
Detecting changes in the eigenstructure of linear systems is a comprehensively investigated subject. In particular, change detection methods based on hypothesis testing using Gaussian residuals have been developed previously. In such residuals, a reference model is confronted to data from the current system. In this paper, linear output-only Systems depending on a varying external physical parameter are considered. These systems are driven by process noise, whose covariance may also vary between measurements. To deal with the varying parameter, an interpolation approach is pursued, where a limited number of reference models { each estimated from data measured in a reference state { are interpolated to approximate an adequate reference model for the current parameter. The problem becomes more complex when the different points of interpolation correspond to different noise conditions. Then con icts May arise between the detection of changes in the eigenstructure due to a fault and the detection of changes due to different noise conditions. For this case, a new change detection approach is developed based on the interpolation of the eigenstructure at the reference points. The resulting approach is capable of change detection when both the external physical parameter and the process noise conditions are varying. This approach is validated on a numerical simulation of a mechanical system.
Fault detection for linear parameter varying systems under changes in the process noise covariance
(2020)
Detecting changes in the eigenstructure of linear systems is a comprehensively investigated subject. In particular, change detection methods based on hypothesis testing using Gaussian residuals have been developed previously. In such residuals, a reference model is confronted to data from the current system. In this paper, linear output-only systems depending on a varying external physical parameter are considered. These systems are driven by process noise, whose covariance may also vary between measurements. To deal with the varying parameter, an interpolation approach is pursued, where a limited number of reference models -- each estimated from data measured in a reference state -- are interpolated to approximate an adequate reference model for the current parameter. The problem becomes more complex when the different points of interpolation correspond to different noise conditions. Then conflicts may arise between the detection of changes in the eigenstructure due to a fault and the detection of changes due to different noise conditions. For this case, a new change detection approach is developed based on the interpolation of the eigenstructure at the reference points. The resulting approach is capable of change detection when both the external physical parameter and the process noise conditions are varying. This approach is validated on a numerical simulation of a mechanical system.
Structural health monitoring (SHM) of civil structures often is limited due to changing environmental conditions, as those changes affect the structural dynamical properties in a similar way like damages can do. In this article, an approach for damage detection under changing temperatures is presentedand applied to a beam structure. The used stochastic subspace-based algorithm relies on a reference null space estimate, which is confronted to data from the testing state in a residual function. For damage detection the residual is evaluated by means of statistical hypothesis tests. Changes of the system due to temperature effects are handled with a model interpolation approach from linear parameter varying system theory. From vibration data measured in the undamaged state at some few reference temperatures, a model of the dynamic system valid for the current testing temperature is interpolated. The reference null space and the covariance matrix for the hypothesis test is computed from this interpolated model. This approach has been developed recently and was validated in an academic test case on simulations of a mass-spring-damper. In this paper, the approach is validated experimentally on a beam structure under varying temperature conditions in a climate chamber. Compared to other approaches, the interpolation approach leads to significantly less false positive alarms in the reference state when the structure is exposed to different temperatures, while faults can still be detected reliably.
Die Bemessung von tragendem Lehmmauerwerk erfolgt in Deutschland auf Basis der Lehmbau Regeln. Das dort verankerte Nachweisverfahren beruht auf einem globalen Sicherheitskonzept, welches aus zuverlässigkeitstheoretischer Sicht nicht mehr dem Stand der Technik entspricht. Auf Grund dessen wird das Bemessungskonzept für Lehmmauerwerk vom Deutschen Institut für Bautechnik (DIBt) voraussichtlich 2023 außer Kraft gesetzt. Ein statischer Nachweis von tragenden Lehmbauten wäre in Deutschland dann ausschließlich mit einer Zustimmung im Einzelfall (ZiE) oder vorhabenbezogener Bauartgenehmigung (vBg) möglich. Beides ist mit erheblichem Mehraufwand und höheren Kosten verbunden, was für den Lehmmauerwerksbau einen entscheidenden Nachteil im Vergleich zum konventionellen Mauerwerksbau darstellt. Um eine unkomplizierte Praxisanwendung von Lehmmauerwerk zu ermöglichen, werden innerhalb eines Forschungsvorhabens, welches von der Bundesanstalt für Materialforschung und -prüfung (BAM), dem Institut für Massivbau der Technischen Universität Darmstadt sowie dem Ingenieurbüro ZRS durchgeführt wird, auf Basis der Produktnormen für Lehmsteine und Lehmmauermörtel Grundlagen für ein aktualisiertes Bemessungskonzept entwickelt. Im Rahmen des Projekts wird ebenfalls untersucht, inwiefern die Bemessungsregeln nach den vereinfachten Berechnungsmethoden für unbewehrtes Mauerwerk gemäß DIN EN 1996-3 / NA auf den Lehmmauerwerksbau übertragbar sind. Falls eine Anwendung des normativen Nachweisverfahrens bei Lehmmauerwerk möglich ist, wäre zukünftig eine Aufnahme von Lehmsteinen und Lehmmauermörtel in den nationalen Anhang des Eurocode 6 denkbar, was eine bedeutsame Erweiterung des Anwendungsbereichs von Lehmmauerwerk zur Folge hätte.
Diverse wissenschaftliche Untersuchungen konnten zeigen, dass bemessungsrelevante Festigkeits- und Verformungseigenschaften von Lehmmauerwerksbaustoffen stark von der vorherrschenden Materialfeuchte abhängen, welche im hygroskopischen Wassergehaltsbereich im Wesentlichen von der relativen Luftfeuchte (RLF) bestimmt wird. Auch die Zwischenergebnisse des laufenden Forschungsvorhabens zur Entwicklung eines Bemessungskonzepts für Lehmmauerwerk ergaben eine deutlich erkennbare Abhängigkeit zwischen der Materialfeuchte und den relevanten Festigkeits- und Verformungseigenschaften. Eine detaillierte Kenntnis des feuchteabhängigen Materialverhaltens von Lehmsteinen, -mörtel und -mauerwerk ist zwingend erforderlich, um ein konsistentes und zuverlässiges Bemessungskonzept für Lehmmauerwerk zu entwickeln. Im Rahmen des laufenden Forschungsprojektes werden deshalb umfangreiche Versuche zum Drucktragverhalten von Lehmsteinen und -mörtel sowie Lehmmauerwerk nach Konditionierung bei unterschiedlichen RLF durchgeführt und analysiert. Weiterhin werden auf Basis der experimentellen Ergebnisse numerische Modelle kalibriert, welche die detaillierte Analyse der Biegedrucktragfähigkeit von Lehmmauerwerk ermöglichen.
In diesem Beitrag werden zunächst die bisherigen Zwischenergebnisse bezüglich der experimentell ermittelten feuchteabhängigen Materialkennwerte von Lehmsteinen, -mörtel und -mauerwerk dargelegt. Darauf aufbauend werden numerische Untersuchungen zur Bestimmung der Systemtragfähigkeit von Lehmmauerwerk unter Feuchteeinflusses durchgeführt und erläutert.
The aim of the study is to infer the soil stratification from the provided CPT and borehole data. We infer the soil type at any location within the domain of interest from the SBT index Ic (Robertson, 2009). This index can be directly related to the CPT data through an empirical correlation model. In addition, the soil classes contained in the borehole logs can be expressed as bounds on Ic. A log-transformation was applied to Ic, Y = ln(Ic), and Y was modelled by a 3D Random Field, with a fully Bayesian hierarchical Gaussian Process model to explicitly capture uncertainties.
This presentation discusses the potentials of probabilistic methods in offshore foundation installation, from the perspective of probabilistic ground models and data-driven site characterization. We discuss about methodologies for utilizing site-specific geotechnical (CPT) and geological data, aiming to construct an integrated ground model that can predict stratigraphic profiles and useful for geotechnical design parameters at any location within a 3D domain. The predicted parameters and stratigraphy are then used to predict the probability of potential pile tip damage, upon collision with a boulder.
Messen im Bauwesen 2018
(2018)
Der Tagungsband zur 10. Fachtagung „Messen im Bauwesen“ enthält die Beiträge der Autoren zum diesjährigen Thema „Messtechnische Anwendungen und deren Einbindung in digitale Bauwerksmodelle“ enthält.
Building Information Modeling (BIM) ermöglicht einen integralen Entwurfs-, Ausführungs- und Instandsetzungsprozess und verspricht Bauwerke von höherer Qualität bei niedrigeren Kosten und kürzeren Projektlaufzeiten. Was BIM aber im konkreten Anwendungsfall bedeutet, ist generell noch Teil eines umfassenden Diskussionsprozesses, insbesondere für die Integration der Ergebnisse von Bauwerksmessungen aus der Ausführungs- und Betriebsphase.
Die diesjährige Ausgabe der Tagung „Messen im Bauwesen“ befasst sich schwerpunktmäßig mit verschiedenen Aspekten des BIM in der bestehenden Baupraxis, beschreibt Technologien hinter BIM und zeigt die vielfältigen Möglichkeiten eines Einsatzes von Messverfahren sowohl in der Bauausführung als auch beim Lebenszyklusmanagement von Bauwerken auf. Auf Basis dieser Schwerpunktsetzung möchten wir wieder aus der Sicht des Bauingenieurs und des Geodäten von Praxisbeispielen aus Hoch- und Tiefbau berichten.
Die Vorträge sind zusammengestellt mit Blick insbesondere auf Bau- und Vermessungsingenieure in Ingenieurbüros sowie der Verwaltung in den Bereichen Planung, Ausführung und Betrieb von Infrastrukturbauwerken.