The Crack Resistance Analysis in Mid-Span Closure Segment of Continuous Rigid-Frame Box Girder Bridge Based on ANSYS

2014 ◽  
Author(s):  
Wu Xun ◽  
Yi Xianshui ◽  
Li Jie ◽  
Xiang Xiaoyang
Keyword(s):  
Crack Resistance ◽  
Box Girder ◽  
Resistance Analysis ◽  
Rigid Frame ◽  
Box Girder Bridge ◽  
Girder Bridge

Optimization on Closure Scheme of Multi-Span Prestressed Concrete Box-Girder Bridge

2010 ◽  
Vol 163-167 ◽  
pp. 2369-2375 ◽  
Author(s):  
Ming Yuan ◽  
Dong Huang Yan
Keyword(s):  
Stress State ◽  
Prestressed Concrete ◽  
Box Girder ◽  
Rigid Frame ◽  
Closure Scheme ◽  
Concrete Box Girder ◽  
Box Girder Bridge ◽  
Girder Bridge ◽  
Cantilever Construction ◽  
Rigid Frame Bridge

The stress state of finished bridge and service stage is influenced by various closure schemes in cantilever construction of multi-span prestressed concrete box-girder bridge. Two typical bridges—multi-span prestressed concrete continuous rigid frame bridge and girder bridge are investigated, The stress state in different closure schemes are analyzed using finite element(FE) analysis. Meanwhile, compared the healthy monitoring data, it has been found that taking the closure sequence from side span to middle span in cantilever construction of multi-span prestressed concrete box-girder bridge can lower stress of girder and pier in finished bridge stage, as well as reducing deformation of girder in service stage. Hence, the closure sequence from side span to middle span is more suitable for cantilever construction of multi-span prestressed concrete box-girder bridge.

Research on Extending Span of Box Girder Bridge with Corrugated Steel Webs up to 300m

2019 ◽  
Author(s):  
Dong Xu ◽  
Xiangyong Duanmu ◽  
Yafan Zhou
Keyword(s):  
Limit State ◽  
Ultimate Limit State ◽  
Beam Model ◽  
Box Girder ◽  
Single Beam ◽  
Stability Performance ◽  
Rigid Frame ◽  
Box Girder Bridge ◽  
Girder Bridge ◽  
Under Construction

<p>In order to promote the application of steel-concrete composite structure in mountainous areas in China, a conceptual design for a PC continuous rigid frame box-girder bridge with corrugated steel webs and main span of 300 m was performed in the present paper. The combined corrugated steel web was proposed to increase the compressive area and improve the stability performance; thus, the self-weight of the composite box-girder bridge is significantly reduced. Flexural capacity of the whole section had been calculated with a single-beam model for the ultimate limit state (ULS). For the service limit state (SLS) design, the calculation for the composite box-girder bridge was conducted with the spatial grid model (SGM), from which 27 complete checking stresses in three layers (i.e. outside, inside and middle planes) of concrete plates and steel webs in every cross-section could be obtained. The stress history under construction stage was incorporated into the results obtained by SGM. Moreover, the stress states and stability performance for the composite box-girder bridge constructed were evaluated. The present investigation can provide references for the design and construction of the composite box-girder bridge with corrugated steel webs for long spans.</p>

Vibro-acoustic analysis of a rail transit continuous rigid frame box girder bridge based on a hybrid WFE-2D BE method

2020 ◽  
Vol 157 ◽  
pp. 107028
Author(s):  
Lizhong Song ◽  
Xiaozhen Li ◽  
Jing Zheng ◽  
Min Guo ◽  
Xinxin Wang
Keyword(s):  
Acoustic Analysis ◽  
Rail Transit ◽  
Box Girder ◽  
Rigid Frame ◽  
Box Girder Bridge ◽  
Girder Bridge

Development of Techniques for the Construction of PC Composite Box-Girder Bridge with Corrugated Steel Webs

2014 ◽  
Vol 501-504 ◽  
pp. 1182-1186 ◽  
Author(s):  
Kong Jian Shen ◽  
Pei Feng Li ◽  
Qiao Wang ◽  
Shui Wan
Keyword(s):  
Box Girder ◽  
Construction Methods ◽  
Rigid Frame ◽  
Construction Techniques ◽  
Continuous Girder Bridge ◽  
Box Girder Bridge ◽  
Girder Bridge ◽  
Cantilever Construction ◽  
Beam Bridge ◽  
Rigid Frame Bridge

This paper presents a survey of construction techniques for pre-stressed concrete (PC) box-girder bridge with corrugated steel webs in recent decades. The structural forms of the bridge have experienced simply supported beam bridge, continuous girder bridge, cable-stayed bridge and the continuous rigid frame bridge. Meanwhile, the construction technologies were constantly innovated, including cast-in-situ, precast and the combination of them. The processing and installation technologies of corrugated steel webs and several typical construction techniques for PC box-girder with corrugated steel webs were elaborated, such as full framing construction, cantilever construction, span-by-span construction, incremental launching construction and some other various innovative ways. The valuable experiences in a variety of construction methods were summed up. The results show that some innovative construction ways should be developed by fully utilizing the corrugated steel webs as a guide beam or a work platform to improve the efficiency of construction.

Sun Light Difference Effect on Long-Span PC Continuous Rigid Frame Bridge

2011 ◽  
Vol 71-78 ◽  
pp. 1516-1521
Author(s):  
Fang Yu ◽  
Can Bin Yin
Keyword(s):  
Temperature Field ◽  
Measured Data ◽  
Box Girder ◽  
Rigid Frame ◽  
Box Girder Bridge ◽  
Girder Bridge ◽  
Field Test Result ◽  
Cantilever Construction ◽  
Sun Light ◽  
Difference Effect

In the process of cantilever construction of the Longtan river bridge ,the WZP-035 thermally sensitive as measured points of temperature were buried into two segments of box-girder,and the temperature field of box-girder concrete was observed for three days. The temperature field and its variation laws of box girder bridge were discussed based on measured data. A vertical and transverse thermal gradient model of PC box girder,which could apply in central south China,was presented.This model was compared with the measured data and the thermal effect was analyzed.Results show that the calculated with the model agrees well with field test result and the modle is of some value for the measurement of sun light thermal difference effect on box girder bridge.

Construction Monitoring of Long Span Continuous Rigid Frame Box Girder Bridge

2010 ◽  
Vol 163-167 ◽  
pp. 2715-2722 ◽  
Author(s):  
Guang Yue Wang ◽  
Jian Liu ◽  
Qi Fan
Keyword(s):  
Internal Force ◽  
Construction Technology ◽  
Construction Process ◽  
Stress Monitoring ◽  
Box Girder ◽  
Construction Monitoring ◽  
Long Span ◽  
Rigid Frame ◽  
Box Girder Bridge ◽  
Girder Bridge

The construction of a modern long span rigid frame box girder bridge gives impetus to the development of structural analysis design theory and construction technology. Moreover, it makes construction monitoring of the rigid frame box bridge a significant research subject. Construction monitoring of the rigid frame box bridge signifies regulating the structure’s internal force and alignment in the construction process and completion state, and thence satisfies the designed expectation. Based on the construction monitoring of Liang-Ji Canal Bridge project, the construction process and the designed completion state have been simulated and analyzed at a certain precision level [1]. A plane bar finite element computational model is established, and the alignment and internal force of the bridge in each construction stage are analyzed. Then the simulation analysis of construction process is derived according to its construction characteristics [2]. Through systematical research on the form work elevation and the stress monitoring of the cantilevers during the cast-in-situ construction, the factors which influence deflection and stress are analyzed. The elevation is predicated by the Kalman's filter estimation, the modified grey model and the combination of these two methods. The stress monitoring error and corresponding reasons are analyzed. The measured results show that the combination of the two approaches can improve prediction accuracy. The presented analysis, processing and control methods accumulate many experiences for the design and construction of the long span box girder rigid frame bridge.

Rehabilitation of the Boivre Viaduct - A Multispan Prestressed Box Girder Bridge

PCI Journal ◽  
1986 ◽  
Vol 31 (3) ◽  
pp. 22-47 ◽  
Author(s):  
Charles C. Zollman ◽  
Serge H. Barbaux
Keyword(s):  
Box Girder ◽  
Box Girder Bridge ◽  
Girder Bridge
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