Stress-free-state based structural analysis and construction control theory for staged construction bridges

Qin, Shunquan; Wei, Kai; Qin, Jingxi; Yuan, Renan; Xu, Leiping; Dan, Qilian

doi:10.1186/s43251-020-00001-y

Cited by 12 publications

(6 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The process of deriving the equations is based on the general principle of the finite element method without any simplification, and it is applicable to both planar and space bar elements and beam elements. Equation (18) describes that the mechanical equilibrium of the completion state of any bar system is only related to the structural system, external load, boundary conditions, and the stress-freestate variable of the elements. It has nothing to do with the construction process and is uniquely determined.…”

Section: The Mechanics Equilibrium Equation Of the Staged-constructio...mentioning

confidence: 99%

“…The two states of the same structural system are analyzed with the established mechanical equilibrium in Equation (18), considering the geometric nonlinear effect.…”

Section: The Mechanics Equilibrium Equation Of the Staged-constructio...mentioning

confidence: 99%

“…In the process of establishing Equation (18), no simplification was made to the displacement condition, so the influence of a large displacement has been considered. In addition, the equation is the mechanics equilibrium equation of the completion state of the structure.…”

Section: The Mechanics Equilibrium Equation Of the Staged-constructio...mentioning

confidence: 99%

“…Expressed by the beam e gle, the stress-free-state angle at the beam i end is 0 i θ , and the stress-free-state a the beam j end is 0 j θ , as shown in Figure 2. The stress-free-state length and stress-free-state curvature of structural eleme inherent quantities of the structure itself, and will not change with the loading of th ture and the change in the structural system [18]. To change the stress-free-state and stress-free-state curvature of structural member elements, there must be subs physical changes to the shape of the elements.…”

Section: The Geometric Nonlinear Mechanics Equations Of the Staged-co...mentioning

confidence: 99%

“…Due to the time-dependent nature of the structural system state and the dead load application of staged bridge construction, traditional structural analysis theories that do not consider the effects of the construction process cannot be directly applied [18]. Therefore, scholars have endeavored to take the construction stage of bridges into consideration and proposed several methods based on incremental structural analysis of each construction stage, such as the forward analysis [19,20] and backward analysis [19,[21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Nonlinear Stress-Free-State Forward Analysis Method of Long-Span Cable-Stayed Bridges Constructed in Stages

Wei

Gong

et al. 2023

Buildings

View full text Add to dashboard Cite

Structural analysis and construction control of staged-construction processes are major subjects in the context of modern long-span bridges. Although the forward and backward analysis methods are able to simulate situations, their main disadvantage is that they usually apply the stage superposition principle. In the actual construction process, due to changes made to the plan, the construction process needs to be adjusted at any time, and it is difficult to implement the construction process in complete accordance with the established plan. As a result, the existing simulation method based on the incremental structural analysis of each construction stage has poor adaptability to such adjustments. In this study, considering the strong geometric nonlinear behavior of the long-span cable-stayed bridge construction process, the geometrically nonlinear mechanical equations of the staged-construction bar system structure were derived. The minimum potential energy theorem was used by introducing the concept of the stress-free-state variable of the structural elements. The equation reflects the influence of the change in the stress-free-state variables of structural elements on the completion state of the structure. From the analysis of the geometrical condition that the equilibrium equation holds, the stress-free installation condition of the closing section of the planar beam element structure was obtained. A new simulation method for long-span cable-stayed bridge construction has been proposed, which is called the stress-free-state forward analysis. This method can directly obtain the intermediate process state of cable-stayed bridge construction without performing stage-by-stage demolition calculations, and causing the internal force and deformation of the completion state to reach the design target state. This method can realize the simulation of multi-process parallel operation in construction, and solves the problem of automatic filtering of temporary loads. To illustrate the application of the method, a long-span cable-stayed bridge was analyzed.

show abstract

Section: The Mechanics Equilibrium Equation Of the Staged-constructio...mentioning

confidence: 99%

“…The two states of the same structural system are analyzed with the established mechanical equilibrium in Equation (18), considering the geometric nonlinear effect.…”

Section: The Mechanics Equilibrium Equation Of the Staged-constructio...mentioning

confidence: 99%

Section: The Mechanics Equilibrium Equation Of the Staged-constructio...mentioning

confidence: 99%

Section: The Geometric Nonlinear Mechanics Equations Of the Staged-co...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Nonlinear Stress-Free-State Forward Analysis Method of Long-Span Cable-Stayed Bridges Constructed in Stages

Wei

Gong

et al. 2023

Buildings

View full text Add to dashboard Cite

show abstract

Materials-oriented integrated design and construction of structures in civil engineering—A review

Ming¹,

Huang²,

Li³

2022

Front. Struct. Civ. Eng.

View full text Add to dashboard Cite

Design is a goal-oriented planning activity for creating products, processes, and systems with desired functions through specifications. It is a decision-making exploration: the design outcome may vary greatly depending on the designer’s knowledge and philosophy. Integrated design is one type of design philosophy that takes an interdisciplinary and holistic approach. In civil engineering, structural design is such an activity for creating buildings and infrastructures. Recently, structural design in many countries has emphasized a performance-based philosophy that simultaneously considers a structure’s safety, durability, serviceability, and sustainability. Consequently, integrated design in civil engineering has become more popular, useful, and important. Material-oriented integrated design and construction of structures (MIDCS) combine materials engineering and structural engineering in the design stage: it fully utilizes the strengths of materials by selecting the most suitable structural forms and construction methodologies. This paper will explore real-world examples of MIDCS, including the realization of MIDCS in timber seismic-resistant structures, masonry arch structures, long-span steel bridges, prefabricated/on-site extruded light-weight steel structures, fiber-reinforced cementitious composites structures, and fiber-reinforced polymer bridge decks. Additionally, advanced material design methods such as bioinspired design and structure construction technology of additive manufacturing are briefly reviewed and discussed to demonstrate how MIDCS can combine materials and structures. A unified strength-durability design theory is also introduced, which is a human-centric, interdisciplinary, and holistic approach to the description and development of any civil infrastructure and includes all processes directly involved in the life cycle of the infrastructure. Finally, this paper lays out future research directions for further development in the field.

show abstract

Influence of standard $$k-\varepsilon$$, SST $$\kappa -\omega$$ and LES turbulence models on the numerical assessment of a suspension bridge deck aerodynamic behavior

Costa

Montiel

Corrêa

et al. 2022

J Braz. Soc. Mech. Sci. Eng.

View full text Add to dashboard Cite

Stress-free-state based structural analysis and construction control theory for staged construction bridges

Cited by 12 publications

References 1 publication

Nonlinear Stress-Free-State Forward Analysis Method of Long-Span Cable-Stayed Bridges Constructed in Stages

Nonlinear Stress-Free-State Forward Analysis Method of Long-Span Cable-Stayed Bridges Constructed in Stages

Materials-oriented integrated design and construction of structures in civil engineering—A review

Influence of standard $$k-\varepsilon$$, SST $$\kappa -\omega$$ and LES turbulence models on the numerical assessment of a suspension bridge deck aerodynamic behavior

Contact Info

Product

Resources

About