Stress and Displacement Estimates for Arches

Dym, Clive L.; Williams, Harry E.

doi:10.1061/(asce)st.1943-541x.0000267

Cited by 34 publications

(24 citation statements)

References 4 publications

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“…To add strength in this instance, the cement paste mix was combined with recycled high-density polyethylene (rHDPE). According to Dym and Williams [32], rHDPE increases both the tensile strength and the serviceability of the concrete. Table 1 summarises the differences between plain concrete (C1) and concrete that is mixed with rHDPE fibres (C2-C4).…”

Section: Materials Choicementioning

confidence: 99%

“…Therefore, arch design comprised the main design concept because of its ability to reduce tensile stress. Hand calculations of the main arch roof were performed, as well as an analytical estimation of arch-like structures [32]. The calculations assessed the behaviour of the arch under gravitational line loads, with the use of the small angle theorem among other assumptions.…”

Section: Structural Designmentioning

confidence: 99%

“…The calculations assessed the behaviour of the arch under gravitational line loads, with the use of the small angle theorem among other assumptions. Dym et al [32] discussed the underlying assumption while performing this analytical solution. The main analytical method used for this report is noted, with Figure 12 showing the parameters required.…”

Section: Structural Designmentioning

confidence: 99%

See 2 more Smart Citations

Three-Dimensional Printing Using Recycled High-Density Polyethylene: Technological Challenges and Future Directions for Construction

et al. 2018

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Three-dimensional (3D) printing technologies are transforming the design and manufacture of components and products across many disciplines, but their application in the construction industry is still limited. Material deposition processes can achieve infinite geometries. They have advanced from rapid prototyping and model-scale markets to applications in the fabrication of functional products, large objects, and the construction of full-scale buildings. Many international projects have been realised in recent years, and the construction industry is beginning to make use of such dynamic technologies. Advantages of integrating 3D printing with house construction are significant. They include the capacity for mass customisation of designs and parameters to meet functional and aesthetic purposes, the reduction in construction waste from highly precise placement of materials, and the use of recycled waste products in layer deposition materials. With the ultimate goal of improving construction efficiency and decreasing building costs, the researchers applied Strand 7 Finite Element Analysis software to a numerical model designed for 3D printing a cement mix that incorporates the recycled waste product high-density polyethylene (HDPE). The result: construction of an arched, truss-like roof was found to be structurally feasible in the absence of steel reinforcements, and lab-sized prototypes were manufactured according to the numerical model with 3D printing technology. 3D printing technologies can now be customised to building construction. This paper discusses the applications, advantages, limitations, and future directions of this innovative and viable solution to affordable housing construction.

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Section: Materials Choicementioning

confidence: 99%

Section: Structural Designmentioning

confidence: 99%

Section: Structural Designmentioning

confidence: 99%

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Three-Dimensional Printing Using Recycled High-Density Polyethylene: Technological Challenges and Future Directions for Construction

et al. 2018

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“…The truss rests upon a contour beam by means of hinges. In order to study thoroughly the stress/strain state of the transverse truss [18][19][20][21], three cases of boundary conditions have been calculated ( Fig. 4): a) vertical and horizontal shifts of the support joints are completely limited; b) only settlement of support joints is restricted, in the direction of shift the supports are free; c) vertical and horizontal shifts of the support joints as well as a sag of the truss central section are restricted by springs of finite stiffnesses.…”

Section: Stages Of Investigations General Characteristicsmentioning

confidence: 99%

Investigation of mechanical state of spatial roof from steel trusses on asymmetric building

Samofalov

Žiūkas

2015

mech

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“…The buckling and postbuckling response of elastic arches has been, and continues to be, a subject of immense engineering importance, with a vast number of publications, studies and books involved. Within our limitations, not even a short overview of them can be given, but the reader may address the references of some indicative papers [1][2][3][4][5][6][7][8], as well as books [9][10][11][12][13][14] on the issue. To this end, we will limit ourselves to a general qualitative overview, and then focus on the problem dealt with herein.…”

Section: Short Overview On the Buckling Of Archesmentioning

confidence: 99%

05.41: A unified catastrophe theory approach for the in‐plane buckling of steel arches under point gravitational loading

Pantazi

Sophianopoulos

2017

ce papers

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The problem of the buckling response of various types of steel arches has been the subject of a vast number of earlier as well as recent papers and chapters of books. Namely, the majority of all these works aimed -via analytical and/or computational approaches -to establish the nature of the postbuckling response of the foregoing structures. It has been found over the years that two types of loss of in-plane stability are dominant: (a) snap-through, a characteristic of shallow (flat) arches (low height to span ratio), in a symmetric or asymmetric mode (limit point or bifurcation), and (b) sideways buckling (deep arches). In the latter situation, the axial inextensibility (being a justified simplifying assumption) becomes dominant and in the case of radial load and circular arch configuration the whole analysis is rather easy and convenient, using equilibrium considerations. On the other hand, low arches (with unavoidable shortening of their center line) can be thought of as curved beams; hence their buckling analysis may be performed from the viewpoint of energy. However, there not seems to be a unified approach overall, especially since the geometry of arches may be significantly varying, from circular to elliptical, parabolic, sinusoidal and catenary, and hence the height at the crown and the span are not the only parameters this geometry is dependent on. Moreover, if one considers a point gravitational loading acting on the arch, a case scarcely reported, then the whole analysis is multiparametric, since it involves (a) the value of the load and its position, (b) the cross-sectional and material characteristics and (c) the geometrical configuration parameters. This work aims to provide a unified approach for the foregoing problem based on the Theory of Catastrophes. The total potential energy function involving all the parameters is firstly established, and furthermore all restrictions related to boundary conditions, geometry, material and cross-sectional properties. Using an approximate 4 th order polynomial postbuckling shape, it was found that the problem at hand is governed by a singularity that strongly resembles the butterfly. The work is ongoing and will hopefully reveal interesting future results for structural design purposes.

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Stress and Displacement Estimates for Arches

Cited by 34 publications

References 4 publications

Three-Dimensional Printing Using Recycled High-Density Polyethylene: Technological Challenges and Future Directions for Construction

Three-Dimensional Printing Using Recycled High-Density Polyethylene: Technological Challenges and Future Directions for Construction

Investigation of mechanical state of spatial roof from steel trusses on asymmetric building

05.41: A unified catastrophe theory approach for the in‐plane buckling of steel arches under point gravitational loading

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