Analysis of temperature-induced deformation and stress distribution of long-span concrete truss combination arch bridge based on bridge health monitoring data and finite element simulation

Niu, Yue; Wang, Yong’e; Tang, Yingying

doi:10.1177/1550147720945205

Cited by 13 publications

(8 citation statements)

References 14 publications

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“…When the stress of the sample exceeds the f y value, the sample will also yield. When the pressure of the sample reaches the f u value, the steel sample will also reach the necked state and then quickly break and lose strength [17].…”

Section: Methodsmentioning

confidence: 99%

Stress Analysis of Concrete Materials Based on Finite Element Analysis

Yang

Yuan

2022

Journal of Sensors

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China’s construction industry standard “technical code for concrete special-shaped column structure” has been implemented since 2006, and the use of special-shaped walls in the actual construction of buildings is more common. The cross-section wall can effectively reduce the protruding angle of the building, thereby expanding the effective building area of the room, reducing the proportion of the building components themselves, and making the structure layout of the building more beautiful. In order to analyze the dynamic characteristics of eccentrically compressed prestressed concrete beams, the finite element simulation of different reinforcement parameters, longitudinal reinforcement diameter, and reinforcement ratio was constructed. Through comparison, the load flexibility curve change law of concrete stress cloud and reinforcement stress cloud under various working conditions and the influence change law of test mold are studied, and the influence change law of dynamic characteristics under the above four conditions and unidirectional bias pressure is clarified.

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Section: Methodsmentioning

confidence: 99%

Stress Analysis of Concrete Materials Based on Finite Element Analysis

Yang

Yuan

2022

Journal of Sensors

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“…When the vibration disappears, the "wood weaving" cushion seat and other components connected by mortise and tenon will recover automatically under the interaction of static friction force, the restraining force between mortise and tenon, and the gravity of the corridor bridge. Among them, the mortise and tenon joint has the function of half "hinge," which plays an important role in automatic recovery [19][20][21][22]. (4) When deformation is affected by irresistible factors, there is enough free expansion space.…”

Section: Design Principle Of "Wood Weaving"mentioning

confidence: 99%

Application of BIM Technology in the Seismic Performance of “Wood Weaving” Structure of Wooden Arcade Bridges

Deng

2022

Shock and Vibration

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The wood arch bridge has good seismic performance, and the “wood weaving” of its arch system is closely related. Wood weaving has the isolation function similar to that of rubber bearing isolation layer under earthquake, which is the key to ensuring good isolation performance of wood arch bridges. However, it is difficult to measure the seismic performance of the “wood woven” structure of the wooden arch bridge, which leads to its limited application. In order to solve this problem, building information model (BIM) technology is introduced into this field, and the application of BIM technology in the seismic performance of “wood woven” structures of wooden arch bridges needs research. First, the design principle of “wood weaving” is described, and then the seismic principle of “wood weaving” is analyzed. Finally, from the perspective of the structural strength index, the seismic performance of the wooden arch bridge “wooden woven” structure is analyzed in depth with BIM technology in order to provide some help for understanding the seismic performance of the wooden arch bridge “wooden woven” structure and promoting the effective application of wooden arch bridge.

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“…During the construction of sea crossing bridges, due to the influence of solar radiation, atmospheric convection, annual temperature change, sudden cooling, and other factors, uneven temperature fields will be generated inside the structure, and the resulting temperature stress and deformation will adversely affect the structure [1][2][3][4][5][6]. The temperature effect of bridge structures can generally be summarized into three types: annual temperature change, sunshine temperature, and sudden cooling [7][8][9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Refined Analysis of the Transient Temperature Effect during the Closing Process of a Cross-Sea Bridge

Luo,

Li,

Wang

et al. 2023

Sustainability

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In order to study the transient temperature effect during the construction of a cross-sea bridge off the coast, based on the Hong Kong-Zhuhai-Macao Bridge-Pipe Bridge Crossing Cliff 13-1 Gas Field, a refined analysis was conducted and the prediction of transient temperature gradient and structural response was carried out under the conditions of strong solar radiation and atmospheric convection using the method of combining theoretical research and numerical simulation. Firstly, the partial differential equation of uniform heat flux density on the outer surface of the main girder under the action of solar radiation and atmospheric convection was established. The equation was realized by calculating the solar radiation intensity and the comprehensive heat transfer coefficient, as well as fitting the atmospheric temperature on the outer surface of the main girder, and the equivalent comprehensive temperature at any time on the main girder was obtained. Secondly, a numerical analysis model of the heat conduction of the main girder section was established, and the equivalent comprehensive temperature was input into the numerical model as the temperature field boundary to solve the transient temperature gradient of the section, and the result was verified in comparison with the measured data. Finally, the transient temperature gradient was applied to the girder, and the temperature effect of the main girder during the closing process was also calculated. Construction control measures were also discussed. The research results show that the predicted value of the transient temperature gradient is consistent with the measured value (the maximum deviation is less than 2 °C), and the predicted value is slightly larger than the measured value, which makes the structure safer. During the closing process, the temperature gradient of the main girder has obvious non-linear characteristics: the temperature gradient is relatively high within 0.4 m of the top surface of the roof while tending to zero outside 0.4 m. The best closing time for the main girder is from 21:00 in the evening of the closing day to 6:00 a.m. the next day. For the small angles at both ends of the closure segment during the best closing time, temporary adjustment jacks and temporary counterweights can be adopted to eliminate the small angles at both ends of the closure segment in order to facilitate the welding construction and meet the smoothness requirements of bridge alignment.

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Analysis of temperature-induced deformation and stress distribution of long-span concrete truss combination arch bridge based on bridge health monitoring data and finite element simulation

Cited by 13 publications

References 14 publications

Stress Analysis of Concrete Materials Based on Finite Element Analysis

Stress Analysis of Concrete Materials Based on Finite Element Analysis

Application of BIM Technology in the Seismic Performance of “Wood Weaving” Structure of Wooden Arcade Bridges

Refined Analysis of the Transient Temperature Effect during the Closing Process of a Cross-Sea Bridge

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