Seismic analysis of continuous rigid frame bridge with corrugated steel webs with longitudinal horizontal partitions

2021 ◽  
Author(s):  
Chenxu Cao ◽  
Guosong Wu ◽  
Shui Wan
Keyword(s):  
Seismic Analysis ◽  
Continuous Rigid Frame Bridge ◽  
Rigid Frame ◽  
Rigid Frame Bridge

Studies on Dynamic Characteristics of a Typical Model of Asymmetric Continuous Rigid-Frame Bridge under Different Ratio of Middle Span to Side Span

2012 ◽  
Vol 226-228 ◽  
pp. 1543-1546
Author(s):  
Tian Liang ◽  
Jun Dong ◽  
Xue Jian Xiang
Keyword(s):  
Dynamic Characteristics ◽  
Seismic Analysis ◽  
Response Spectra ◽  
Guizhou Province ◽  
Western China ◽  
Continuous Rigid Frame Bridge ◽  
Rigid Frame ◽  
Key Features ◽  
Rigid Frame Bridge ◽  
Typical Model

Due to the limit of complicated landform in western China, a typical continuous rigid-frame bridge could be easy to be built, especially for asymmetric spans. Based on the engineering background of Sinan Yantou river Bridge in Guizhou province, dynamic characteristics of the type of bridge are studied in this paper. Firstly, by using Midas/Civil, 6 different models are established and their modal analysis could be done while it is considered that the beam of left T-shaped is gradually decreasing under the same height of piers. Then, all seismic responses are calculated by using response spectra method. Finally, the computational results are discussed and some key features are summarized. Our investigation will have some valuable references for seismic analysis of the same style bridge.

Seismic Analysis of Continuous Rigid Frame Bridge with Energy-Based Modal Pushover Method

2010 ◽  
Vol 163-167 ◽  
pp. 3939-3942
Author(s):  
Zhong Quan Zou ◽  
Li Ping Zhou ◽  
Guo Jing He
Keyword(s):  
Seismic Analysis ◽  
Pushover Analysis ◽  
Displacement Curve ◽  
Seismic Zone ◽  
Base Shear ◽  
Continuous Rigid Frame Bridge ◽  
Capacity Spectrum ◽  
Rigid Frame ◽  
Rigid Frame Bridge ◽  
Modal Pushover

Energy-based modal pushover analysis method has been proved to be an appropriate approach to perform seismic analysis for structures whose high mode effect is not negligible. It directly establishes the capacity spectrum based on energy increments, which corrects the deficiency of conventional modal pushover method that the capacity curve would not be unique or even be retorted while the base shear-top displacement curve is established with respect to different reference nodes of the structure. In this paper, a continuous rigid frame bridge with tall piers in seismic zone is analyzed with EMPA method. The results showed that EMPA is more adaptable than conventional methods, and the seismic performance of the bridge can satisfy the demand of the design code.

Studies on the Dynamic Performance of the Continuous Rigid Frame Bridge Impacted by the Damage at Some Key Positions of the Side Piers

2014 ◽  
Vol 1020 ◽  
pp. 137-142
Author(s):  
Bo Qiang Yao ◽  
Jun Dong ◽  
Zhi Gang Qi
Keyword(s):  
Damage Identification ◽  
Seismic Analysis ◽  
Dynamic Performance ◽  
Dynamic Feature ◽  
Dynamic Features ◽  
Damage Degree ◽  
Continuous Rigid Frame Bridge ◽  
Rigid Frame ◽  
Almost All ◽  
Rigid Frame Bridge

Continuous rigid frame bridge is widely used in bridge construction because of its superior characteristics, with its piers increasing. Shown in previous studies, the key positions of the side pier or lower pier at the top and the bottom of the pier yield firstly and then get into the plastic stage in the action of earthquake. So in this condition, dynamic analysis of the continuous rigid frame bridge impacted by the consolidation damage that may occur at the pier top and the bottom is studied in the paper. In the process, the consolidation damage degree is introduced in order to characterize the damage qualitatively. And then Midas/Civil 2010 is adopted to analyze the structure by modeling. Finally, some conclusions are obtained, including that the consolidation damage has a significant impact on the dynamic features, effect on the structure when the damage respectively happens at the two key sections is extremely close, and almost all value of the dynamic feature changes is located in the condition when the damage degree is less than 10%. The job above all in this paper may provide a valuable reference for the seismic analysis and the technique of damage identification and location in continuous rigid frame bridge.

Curing Parameters’ Influences of Early-age Temperature Field in Concrete Continuous Rigid Frame Bridge

2021 ◽  
pp. 127571
Author(s):  
Yong Zeng ◽  
Yutong Zeng ◽  
Dong Jiang ◽  
Shanhong Liu ◽  
Hongmei Tan ◽  
...  
Keyword(s):  
Temperature Field ◽  
Early Age ◽  
Continuous Rigid Frame Bridge ◽  
Rigid Frame ◽  
Rigid Frame Bridge

Analysis of Technical Characteristics and Construction Focus of Long-Span Continuous Rigid Frame Bridge with High-Rise Piers

2014 ◽  
Vol 587-589 ◽  
pp. 1637-1641
Author(s):  
Yao Cui ◽  
We Nang Hou ◽  
Fei Ying Liu
Keyword(s):  
Deep Water ◽  
Water Reservoir ◽  
Bridge Pier ◽  
Reservoir Area ◽  
High Rise ◽  
Construction Methods ◽  
Long Span ◽  
Continuous Rigid Frame Bridge ◽  
Rigid Frame ◽  
Rigid Frame Bridge

Under the condition of the deep water reservoir area, the choice of bridge pier and long span continuous rigid frame beam construction methods are quite various. And the analysis of destruction of bridge depends mostly on the beam and piers. The paper cares mostly about these two parts.

Load testing and health monitoring of monolithic bridges with innovative reinforcement

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Kexin Zhang ◽  
Tianyu Qi ◽  
Dachao Li ◽  
Xingwei Xue ◽  
Zhimin Zhu
Keyword(s):  
Health Monitoring ◽  
Construction Process ◽  
Content Type ◽  
Continuous Rigid Frame Bridge ◽  
Rigid Frame ◽  
Steel Strand ◽  
Before And After ◽  
Load Tests ◽  
Rigid Frame Bridge ◽  
Strengthening Method

PurposeThe paper aims to investigate effectiveness of the strengthening method, the construction process monitoring, fielding-load tests before and after strengthening, and health monitoring after reinforcement were carried out. The results of concrete strain and deflection show that the flexural strength and stiffness of the strengthened beam are improved.Design/methodology/approachThis paper describes prestressed steel strand as a way to strengthen a 25-year-old continuous rigid frame bridge. High strength, low relaxation steel strand with high tensile strain and good corrosion resistance were used in this reinforcement. The construction process for strengthening with prestressed steel strand and steel plate was described. Ultimate bearing capacity of the bridge after strengthening was discussed based on finite element model.FindingsThe cumulative upward deflection of the second span the third span was 39.7 mm, which is basically consistent with the theoretical value, and the measured value is smaller than the theoretical value. The deflection value of the second span during data acquisition was −20 mm–10 mm, which does not exceed the maximum deflection value of live load, and the deflection of the bridge is in a safe state during normal use. Thus, this strengthened way with prestressed steel wire rope is feasible and effective.Originality/valueThis paper describes prestressed steel strand as a way to strengthen a 25-year-old continuous rigid frame bridge. To investigate effectiveness of the strengthening method, the construction process monitoring, fielding-load tests before and after strengthening and health monitoring after reinforcement were carried out.

Analysis of Effective Pre-Stress of Continuous Rigid Frame Bridge in Service Based on Inversion Theory

2013 ◽  
Vol 671-674 ◽  
pp. 1012-1015
Author(s):  
Zhao Ning Zhang ◽  
Ke Xing Li
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Element Model ◽  
Inversion Method ◽  
Vertical Deflection ◽  
Continuous Rigid Frame Bridge ◽  
Rigid Frame ◽  
Inversion Theory ◽  
Rigid Frame Bridge ◽  
The Finite Element Model

Due to the environment, climate, loads and other factors, the pre-stress applied to the beam is not a constant. It is important for engineers to track the state of the pre-stress in order to ensure security of the bridge in service. To solve the problem mentioned above, the paper puts forward a new way to analyze the effective pre-stress using the displacement inversion method based on the inversion theory according to the measured vertical deflection of the bridge in service at different time. The method is a feasible way to predict the effective pre-stress of the bridge in service. Lastly, taking the pre-stressed concrete continuous rigid frame bridge for example, the effective pre-stress is analyzed by establishing the finite element model.

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