Thermal effect of the cable-stayed bridge tower

2003 ◽  
Vol 8 (4) ◽  
pp. 1121-1125 ◽  
Author(s):  
Zhang Hai-long ◽  
Li Jun ◽  
Liu Changguo ◽  
Jiang Tian-hua ◽  
Wei jun
Keyword(s):  
Thermal Effect ◽  
Cable Stayed Bridge ◽  
Bridge Tower

Research on the anti-cracking ability of large composite girder cable- stayed bridge

2019 ◽  
Author(s):  
Yuhao Huang ◽  
Liu Chao ◽  
Xu Dong
Keyword(s):  
Principal Stress ◽  
Bridge Deck ◽  
Design Method ◽  
Concrete Bridge ◽  
Cable Stayed Bridge ◽  
Composite Girder ◽  
Concrete Bridge Deck ◽  
Bottom Slab ◽  
First Time ◽  
Bridge Tower

<p>Recently, composite girder cable-stayed bridge is widely used in the world. Since the existing design method takes less focus on the principal stress of the top and bottom slab, the cracking problem of the concrete bridge deck has not been solved perfectly yet. Based on the spatial grid model, this paper takes Guan He Bridge in Jiangsu province as an example to analyze this kind of structure. Monitoring the principal stress of the concrete bridge deck is proposed for the first time to study the effect of diagonal crack. The principal stress of the concrete deck in the middle span, the quartile span, one-eighth of the span, the side span, the bridge tower, and the auxiliary pier are observed respectively. Comparing the theoretical values with the measured value, the results show that the actual stress state of the whole concrete bridge deck during construction is in accordance with the theoretical calculation. For composite girder cable-stayed bridge, the concrete bridge deck is prone to crack, so it is very significant to control the quality in the construction stage, which can provide a guarantee for the safety and durability of the structure.</p>

Analysis of Thermal Effect on Girder with Side Main Rib Section

2014 ◽  
Vol 501-504 ◽  
pp. 495-500
Author(s):  
Niu Jing Ma
Keyword(s):  
Temperature Field ◽  
Temperature Gradient ◽  
Thermal Effect ◽  
Cross Section ◽  
Stress And Strain ◽  
Cable Stayed Bridge ◽  
The Common ◽  
Equivalent Load ◽  
Thermal Difference

According to the common girder with side main rib section of PC cable-stayed bridge with double cable planes, a computational model of two-dimension temperature field is presented. Temperature gradient of main rib, small longitudinal rib, top plate and flange plate was computed respectively, and then the stress and strain of each section are derived through plane cross-section assumption. For the cable-stayed bridge, member structure FEM is applied to compute node equivalent load and displacement, which resulted from both sunshine and seasonal thermal difference. Finally, a case study is analyzed, the results showed: computed and measured deflection of girder that result from thermal effect are very close, therefore, this method is feasible.

scholarly journals The design of super long span pedestrian landscape cable stayed bridge with sightseeing bridge tower

2021 ◽  
Vol 293 ◽  
pp. 02036
Author(s):  
Tao Jiang ◽  
BiQing Li
Keyword(s):  
Bridge Structure ◽  
Analysis Model ◽  
Element Analysis ◽  
Finite Element Analysis Model ◽  
Cable Stayed Bridge ◽  
Long Span ◽  
Tower Structure ◽  
Design Requirements ◽  
Duck Egg ◽  
Bridge Tower

According to the design requirements of the super long-span pedestrian landscape cable-stayed bridge in Lake view Park, a kind of sightseeing tower-style pedestrian landscape three-tower cable-stayed bridge structure system was proposed. Sightseeing tower type bridge tower structure and duck egg arched bridge tower replace traditional cable-stayed bridge tower structure. Through the establishment of Midas finite element analysis model, dynamic modal analysis research was carried out. The analysis shows that: the sightseeing tower structure and the cable-stayed bridge tower structure are combined into one, and the two have good structural matching.

scholarly journals Research of Thermal Effect of Cable-Stayed Bridge with a Separated Side-Box Steel-Concrete Composite Girder under Solar Radiation

2021 ◽  
Vol 2021 ◽  
pp. 1-17
Author(s):  
Han-hao Zhang ◽  
Pei-zhi Wang ◽  
Shuanhai He ◽  
Yuan Li ◽  
Ke-fan Chen ◽  
...  
Keyword(s):  
Solar Radiation ◽  
Thermal Effect ◽  
Temperature Stress ◽  
Thermal Field ◽  
Element Model ◽  
Beam Element ◽  
Maximum Temperature ◽  
Cable Stayed Bridge ◽  
Composite Girder ◽  
Mixed Element

At present, there are few studies on the thermal effect of solar radiation on a separated double-sided box steel-concrete composite girder cable-stayed bridge. In this paper, the beam element and mixed element models are combined with the theory of transient heat transfer analysis and meteorology; this approach is adopted to carry out a thermodynamic analysis of a related bridge project. The calculation results of the thermal field and structural thermodynamic analysis of bridge sections show that, in terms of a separated double-sided box steel-concrete composite girder cable-stayed bridge, the thermal field distributions of the main girder and the pylons are extremely complex under conditions of solar radiation. Therefore, the real thermal field cannot be accurately described as a one-dimensional temperature gradient. The traditional beam element model cannot accurately simulate the temperature effect, and it will underestimate its thermal effect. The calculated temperature stress values of the mixed element model are quite different from those of the of beam element model. The mixed element model can precisely reflect the local thermal effect of each component in this system under solar radiation. Compared with the calculation results of the beam element model, the maximum temperature stress of the bridge deck in each section of the main girder is generally 20% larger; the maximum temperature stress levels of the steel-beam top and bottom plates are 14.7 MPa and 15.9 MPa larger, respectively. The maximum shear stress of the steel-concrete interface is 0.2 MPa larger. The research results of the temperature effect calculated by the mixed element have an important guiding significance for the design and maintenance of bridges.

Seismic Response Analysis of the Numerical Simulation Method on Cable-Stayed Bridge Tower which Considers the Rigid Foundation

2014 ◽  
Vol 875-877 ◽  
pp. 998-1002
Author(s):  
Wei Bing Luo ◽  
Ji Ming Fan ◽  
Ji Lv ◽  
Li Ya Zhang ◽  
Cui Cui Wu
Keyword(s):  
Seismic Response ◽  
Ground Motions ◽  
Simulation Method ◽  
Response Analysis ◽  
Rigid Foundation ◽  
Seismic Responses ◽  
Near Fault ◽  
Cable Stayed Bridge ◽  
Long Span ◽  
Bridge Tower

The seismic responses under the action of far-fault and near-fault ground motions of the bridge tower structure of the long-span cable-stayed bridge are numerically discussed by means of the model of the bottom consolidation of the column. The results show that the responses of tower of the cable-stayed bridge correlate well with the properties of the ground motions. The seismic responses of the model have much larger values under the near-fault velocity pulse-like ground motions than those of the counterpart. The frequency of system reduces as the flexibility of structure decreases because of the rigid foundation; The displace response of tower shows that the rigid foundation has little influence on the seismic response of the cable-stayed bridge, while the acceleration response of the tower implies that rigid foundation has adverse effect. Thus, consideration of the soil-pile-superstructure interaction can be meaningful both in theory and reality during the seismic design of long-span cable-stayed bridge structure.

Finite Element Analysis of Thermal Stress for Cable-Stayed Bridge Tower with Cracks

2012 ◽  
Vol 178-181 ◽  
pp. 2085-2090
Author(s):  
Zhong Ren Feng ◽  
Jian Shen ◽  
Xiong Jiang Wang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Temperature Field ◽  
Thermal Stress ◽  
Element Calculation ◽  
Element Analysis ◽  
Cable Stayed Bridge ◽  
Crack Tips ◽  
Simulation Results ◽  
Bridge Tower

The application of ABAQUS in thermal stress analysis of mass reinforced concrete, focusing on the temperature field, crack propagation, ABAQUS modeling, finite element analysis approaches of thermal stress, is reviewed first in this paper. Then, based on the observation of one cable-stayed bridge pylon, a finite element analysis of existing crack tips in temperature stress is done, and the simulation results are compared with the measured ones to verify the validity and accuracy of the finite element calculation.

Deformation and Stress Analysis of an Asymmetric Single Tower Cable-Stayed Bridge on High Speed Railway in Swiveling Process

2014 ◽  
Vol 1079-1080 ◽  
pp. 359-363
Author(s):  
Ru Deng Luo ◽  
Hai Long Wang ◽  
Jie Hui Hu
Keyword(s):  
Stress Analysis ◽  
High Speed ◽  
Mechanical Performance ◽  
Bridge Structure ◽  
High Speed Railway ◽  
Channel Section ◽  
Cable Stayed Bridge ◽  
Bridge Girder ◽  
Bridge Tower

In this paper, we have studied a bridge with span-arrangement 112m+80m+32m,which is a three-span single-tower double cable plane swivel cable-stayed bridge. The bridge girder use channel section and bridge tower and girder consolidate an inverted Y-shaped structure in both directions. 112m + 80m main beams adopt swiveling construction. The bridge structure is novel, loading is complex. This thesis will systematically study the mechanical performance of the bridge in swiveling process.

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