Deformation Monitoring of Road Transport Structures and Facilities Using Engineering and Geodetic Techniques

Кузина, Екатерина; Rimshin, Vladimir

doi:10.1007/978-3-319-70987-1_43

Cited by 24 publications

(10 citation statements)

References 11 publications

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“…In contrast to the matrix (10) where the transfer was perpendicular to the Z axis, we see that the matrix components are not equal to each other, which indicates that the deformation of the rotation is not similar as transfer one. In addition, in the case of rotation there will be 8 MATEC Web of Conferences 245, 04013 (2018) https://doi.org/10.1051/matecconf/201824504013 EECE-2018 points that have not changed their coordinates (for example, in the figure above the points N and P ), so the displacement vectors of these points will be equal 0.…”

Section: The Point's Rotation Around the X-axiscontrasting

confidence: 57%

Estimation of absolute deformations by changes in distances between the reference points and deformation marks

2018

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The article considers the definition of absolute types of deformations, such as transfer and rotation of a building, using linear spatial intersection. In particular, knowing the distances between strong points and deformation marks, the coordinates of the marks located on the building in the initial and current observation cycles are obtained. Knowing the coordinates of the marks, calculate the displacement vectors of the marks for a certain period of time. The definition of absolute deformations is based on the estimation of the projections of the displacement vectors on the coordinate axes, as well as the direction cosines of the vectors with the coordinate axes. The determination of the direction of displacement is shown for the transference deformation. And how to determine the axis, the distance to this axis and the angle of rotation is shown for rotation deformation. We show for joint deformation of the transfer and rotation how divide it into components and then determine the direction of displacement and the axis of rotation. The results can be used in assessing of absolute deformations buildings of monuments of cultural heritage.

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Section: The Point's Rotation Around the X-axiscontrasting

confidence: 57%

Estimation of absolute deformations by changes in distances between the reference points and deformation marks

2018

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“…is the average curvature of Ei ,which can be calculated by Equation (2). Tensile strain and upward deflection are defined to be positive in this paper.…”

Section: Inproved Conjugated Beam Methodsmentioning

confidence: 99%

“…Monitored deformation is usually used as an effective index not only to evaluate the overall health and safety of the in-service bridges but also to prevent some abnormal states due to the inextricable relationship between the deformation and the stress/strain distribution. Geodetic survey using digital level or total station has been widely applied to directly measuring bridge deformation [1,2] because of its low cost and easy operation. The main disadvantages of geodetic survey are possible obstruction to public traffic when the survey is ongoing and measurement error from manual observation.…”

Section: Introductionmentioning

confidence: 99%

Distributed Deformation Monitoring for a Single-Cell Box Girder Based on Distributed Long-Gage Fiber Bragg Grating (LFBG) Sensors

Shen¹,

Jiang²

2018

Preprint

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Distributed deformation based on Fiber Bragg Grating sensors or other kinds of strain sensors can be used to evaluate safety in operating periods of bridges. However, most of the published researches about distributed deformation monitoring are focused on solid rectangular beam rather than box girder—a kind of typical hollow beam widely employed in actual bridges. Considering that the entire deformation of a single-cell box girder contains not only bending deflection but also two additional deformations respectively caused by shear lag and shearing action, this paper again revises the improved conjugated beam method (ICBM) based on the LFBG sensors to satisfy the requirements for monitoring two mentioned additional deformations. The best choice for the LFBG sensor placement in box gilder is also proposed in this paper due to strain fluctuation on flange caused by shear lag effect. Results from numerical simulations show that most of the theoretical monitoring errors of the revised ICBM are 0.3%~1.5%, and the maximum error is 2.4%. A loading experiment for a single-cell box gilder monitored by LFBG sensors show that most of the practical monitoring errors are 6%~8%, and the maximum error is 11%.

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“…The damage effect to the support nodes of beams and columns on the power resistance. The effect of node damage (changes in boundary conditions) is illustrated on the main elements of building frames -beams and columns [17][18][19][20][21][22][23][24][25].…”

Section: Wherementioning

confidence: 99%

“…The beam B-1 bending moments in pinching equal: (19) mid-span (20) and the angle of the reference section rotation is zero. The beam B-2 bending moments are described by the equation 21which leads to the calculation of the reference moments (22) and mid-span moments (23) wherein the angle of the reference section free rotation (24) It follows that the beam B-1 without destruction can perceive as a uniform load (25) and beam B-2, respectively (26) that is half as much. Thus, if the B-1 beam will lose the ability to perceive the supporting moments due to damage to the supporting sections, and the beam itself will receive an articulated design scheme, then the resource of its bearing capacity will be reduced by half.…”

Section: Wherementioning

confidence: 99%

Reserves and exposure assessment of reinforced concrete structures safety while reducing its power resistance

2019

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Structural safety of buildings is such an engineering state of the structures operability, foundations, the features of their joint power resistance to expected loads and impacts, taking into account their possible combinations in direction, intensity and mode, which ensures the established functional use with established reliability. The structural safety of buildings depends on design, on compositional and structural solutions, technological measures during construction and operation, which must be provided at all stages of the facility’s existence (construction, operation, repair, reconstruction, dismantling and dismantling). It is necessary to take into account the structural safety parameters of reinforced concrete structures that have received corrosion damage during solving the problems of construction and reconstruction of buildings and structures. Suggestions to quantify the reserves and exposure of structural safety and, accordingly, the reduction in power resistance of corrosion-damaged reinforced concrete structures are presented in this article.

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Deformation Monitoring of Road Transport Structures and Facilities Using Engineering and Geodetic Techniques

Cited by 24 publications

References 11 publications

Estimation of absolute deformations by changes in distances between the reference points and deformation marks

Estimation of absolute deformations by changes in distances between the reference points and deformation marks

Distributed Deformation Monitoring for a Single-Cell Box Girder Based on Distributed Long-Gage Fiber Bragg Grating (LFBG) Sensors

Reserves and exposure assessment of reinforced concrete structures safety while reducing its power resistance

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