Analysis and Evaluation on Safety of Old Stone Arch Bridge Based on Current Specification

2014 ◽  
Vol 501-504 ◽  
pp. 1178-1181
Author(s):  
Zhi Meng Zhao ◽  
Xiao Long Wang ◽  
Feng Jin Chen ◽  
Zhen Ji Wang ◽  
Ya Juan Yang
Keyword(s):  
Bearing Capacity ◽  
Live Load ◽  
Arch Bridge ◽  
Republic Of China ◽  
Analysis And Evaluation ◽  
Current Specification ◽  
Arch Action ◽  
Cold Area ◽  
Uniform Cross Section ◽  
Main Arch

This paper examines the bearing capacity and stability of a catenary axis uniform cross-section multi-span stone arch bridge with solid spandrels in the cold areas. Taking the West Ulanhot Large Bridge built in cold area of Inner Mongolia in 1960s as an example, the bearing capacity and stability of early-built stone arch bridge were calculated,in consideration with the effect of dead load, live load and temperature variation as well as multi-arch action on the main arch ring, in the light of current specification, i.e., the Code for Design of Highway Masonry Bridges and Culverts (JTG D61-2005) published by the Ministry of Communications of the People's Republic of China. The aim was to evaluate the safety of the old multi-span arch bridge through the theoretical analysis and checking calculation based on the current specification.

Analysis and Evaluation on Strengthening and Widening of a Catenary Stone Arch Bridge with Solid Spandrels

2013 ◽  
Vol 838-841 ◽  
pp. 1042-1047 ◽  
Author(s):  
Zhi Meng Zhao ◽  
Feng Jin Chen ◽  
Jin Yi Chai ◽  
Zhen Ji Wang ◽  
Hou Lin Zhou
Keyword(s):  
Bearing Capacity ◽  
Operation Condition ◽  
Loading Test ◽  
Arch Bridge ◽  
Republic Of China ◽  
Analysis And Evaluation ◽  
Arch Action ◽  
Cold Area ◽  
Uniform Cross Section

This paper examines the bearing capacity and stability of a catenary axis uniform cross-section multi-span stone arch bridge with solid spandrels after strengthening and widening, in the light of the Code for Design of Highway Masonry Bridges and Culverts (JTG D61-2005) published by the Ministry of Communications of the People's Republic of China. Taking the West Ulanhot Large Bridge built in cold area of Inner Mongolia in 1960s as an example, the effect of dead load, live load and temperature variation after and before strengthening as well as multi-arch action were considered. Through calculating the bearing capacity and stability of stone multiple arch bridge, compared with the results of loading test and follow-up survey on operation condition for many years, the safety and effectiveness of strengthening scheme are evaluated.

Ultimate Bearing Capacity Analysis of Long-Span Continuous Stone Arch Bridge

2011 ◽  
Vol 71-78 ◽  
pp. 3800-3805
Author(s):  
Da Lin Hu ◽  
Kai Jiang ◽  
Qi Xin Sun ◽  
Lin Han
Keyword(s):  
Bearing Capacity ◽  
Safety Assessment ◽  
Ultimate Bearing Capacity ◽  
Failure Characteristics ◽  
Arch Bridge ◽  
The Past ◽  
Long Span ◽  
Arch Bridges ◽  
Mechanical Performances ◽  
Main Arch

In the past 50 years, many long-span continuous stone arch bridges have been built in China. Analysis of mechanical performances and load capacities of long-span continuous stone arch bridges has important significances for the safety assessment of the similar bridges. 3D elastoplastic finite element method is employed to analyze ultimate bearing capacity of a three-span arch bridge with sandstone masonry in this paper. The characteristics of structural geometric and material nonlinearities and cracking and crushing of the masonry are taken into account. Compared with single-span arch bridge, both the coaction of spandrel structure and main arch and the influence of loading arrangements on ultimate bearing capacity is analyzed. The failure characteristics of the structure under the ultimate load are also introduced. The analysis results and conclusions can be referenced for the safety assessment of similar bridges.

Calculating Analysis of Reinforcing Layer Utilization on Stone Arch Bridge Strengthened by Composite Main Arch Circle Method

2012 ◽  
Vol 226-228 ◽  
pp. 1539-1542
Author(s):  
Wen Jing Qiao ◽  
Yi Fan Song ◽  
Wen Yuan Zhang
Keyword(s):  
Bearing Capacity ◽  
Compressive Strain ◽  
Circle Method ◽  
Utilization Rate ◽  
Compression Zone ◽  
Reinforcement Structure ◽  
Arch Bridge ◽  
Tension And Compression ◽  
Main Arch ◽  
Reinforcing Layer

The calculation formulas for concrete and steel utilization rate of reinforcing layer have been deduced, in view of the underutilization of reinforcing layer material by composite main arch circle method. The calculation formulas is defined as load bearing capacity of reinforcing layer divided by the ultimate bearing capacity of reinforcing layer, combined with initial strain of main arch ring before reinforcement and reinforcing layer section edge strain, take compression zone partial of reinforcing layer subjected to tension and compression as example. The calculation formulas for concrete utilization rate of reinforcing layer is divided into 2 types according to the height of compression zone and on the edge of compressive strain in the reinforcing layer, the calculation formulas for steel utilization rate of reinforcing layer is divided into 1 types according to tension strain of the steel. The results show that controlling the stress and strain of stone arch bridge before reinforcement can make full use of compression resistance on main arch ring, strength of materials and reduce the waste of materials relying on engineering example. The calculation formulas provide the theoretical basis for calculation and design of the similar reinforcement structure.

Redistribution of Internal Force under Structural Defect and Non-Linear Spatial Stability under Live Load and Wind of Tied-Arch Bridge

2013 ◽  
Vol 477-478 ◽  
pp. 640-645
Author(s):  
Qian Hui Pu ◽  
Hu Zhao
Keyword(s):  
Safety Factor ◽  
Mechanical Performance ◽  
Influence Factors ◽  
Internal Force ◽  
Structural Defects ◽  
Live Load ◽  
Positive Contribution ◽  
Arch Bridge ◽  
Initial Defect ◽  
Tied Arch Bridge

To study the mechanical performance and stability of tied-arch bridge under structural defects and damages, limited element modal of Panzhihua Luoguo Jinshajiang Bridge was established and analyzed. Firstly, some typical damage models and their influence factors were presented. Then, based on the model established, change of suspender force caused by arch rib lineation defect, hanger lineation defect and boom failure was calculated respectively. The stability safety factor under the load group composed of dead load, live load and wind was calculated as well as the second-class nonlinear stability safety factor under structural initial defect. Calculation results shows that, suspender forces were more sensitive to archs vertical defect than to transverse defect. While, short hangers were more sensitive to lineation defect than long ones, and secondary inner force in short booms were bigger than in long ones. The result also tells that lateral wind is bad to lateral stability. Lift wind, somehow, makes positive contribution to structures in-plane stability. Structural initial defect can draw down the second-class stability safety factor under geometric nonlinear condition.

Frances Appleton Pedestrian Bridge Design and Construction

2021 ◽  
Author(s):  
Miguel Rosales
Keyword(s):  
Americans With Disabilities Act ◽  
Bridge Design ◽  
Arch Bridge ◽  
Pedestrian Bridge ◽  
Historic Landmark ◽  
First Americans ◽  
Main Arch ◽  
Design And Construction

<p>The Frances Appleton Pedestrian Bridge is an innovative steel arch bridge with a 69m main span and curvilinear approaches along the Charles River in Boston, Massachusetts. It is the first Americans with Disabilities Act fully accessible 4.3m wide bridge connecting Boston’s historic Beacon Hill neighborhood to the Esplanade Park and Charles River. An overall architectural and structural theme was followed in the design of all bridge components including the main arch, Y shaped approach piers, circular stairs and curved ramps. The bridge is light, elegant and well-integrated into the landscape complementing an adjacent historic landmark bridge and seamlessly blending into the waterfront context.</p>

Erection of Pearl Bridge by Bear Angle Vertical Swivel Method

2010 ◽  
Vol 163-167 ◽  
pp. 961-967
Author(s):  
Zi Hua Guo ◽  
Zhe Zhang
Keyword(s):  
Construction Method ◽  
Arch Bridge ◽  
Main Arch

Bear Angle Vertical Swivel Method for arch bridge has been developed for many years overseas and obtained stated success such as Kobaru Valley Bridge in Japan and ArgenLobel bridge in Germany, this method is in the researching period right now in China. During the processing of construction, concrete of arch rib was casted vertically and then rotated, main arch ring was casted vertically by formwork climbing technology, main arch ring was laid to completed bridge elevation by using continues jacks, forming a set of swivel construction method for arch bridge.

Construction Control Analysis of Large Span Reinforced Concrete Arch Bridge

2012 ◽  
Vol 490-495 ◽  
pp. 1186-1190
Author(s):  
Yu Cao ◽  
Yi Feng Zheng ◽  
Xiao Cong Xi
Keyword(s):  
Reinforced Concrete ◽  
Tracking Control ◽  
Construction Control ◽  
Control Analysis ◽  
Construction Process ◽  
Construction Monitoring ◽  
Arch Bridge ◽  
Internal Forces ◽  
Design Requirements ◽  
Main Arch

Construction monitoring of reinforced concrete arch bridge mainly include both the linear of structure and structural stress, comprehensive tracking control must be conducted to make smoothly construction of bridge and meet the design requirements. Taking 2# bridge in International Tourism Resort District of Changbai Mountain as the engineering background, according to features of sub-situ construction control of main arch, a reasonable program of construction control is adopted, to ensure that status of structural internal forces meet the design requirements or in a secure area during the construction process or after completion.

Deflection Test on CFST Arch Bridge with CFRP Slings

2011 ◽  
Vol 295-297 ◽  
pp. 1079-1087
Author(s):  
Guo Hui Cao ◽  
Zhen Yu Xie ◽  
Ming Cai Wen ◽  
Ran He
Keyword(s):  
Bearing Capacity ◽  
Ultimate Bearing Capacity ◽  
Arch Bridge ◽  
Bridge Model ◽  
Cfst Arch Bridge ◽  
Internal Forces ◽  
East And West ◽  
Deflection Test

The ultimate bearing capacity test is carried on CFST arch bridge model with CFRP slings, and the deflection of tie-beams, CFST arch, crossbeams, decks is also tested. Studies have shown that before the sliping of 4# CFRP sling, the deflection growth of east and west tie-beam, east and west arch both has good symmetry. The deflection growth of crossbeams and decks also has good symmetry, but after the sliping of 4# CFRP sling(located at the middle of west tie-beam), the structural internal forces redistribution appeared. The deflection of west tie-beam increased suddenly, and the mid-span deflection of west tie-beam is larger than that of east tie-beam by 14.6%. The mid-span deflection of east arch is larger than that of west arch by 9.9%. The deflection of crossbeam at 3L/8 and L/4 sections are respectively larger than those of crossbeam at 5L/8 and 3L/4 sections by 13.8% and 5.3%, The deflection of 3#, 2# and 1# decks are respectively larger than those of 4#, 5# and 6# decks by 7.8%, 13.2% and 17.1%. After the snapping of 10# CFRP sling(located at 3L/8 section of east tie-beam), the structural internal forces would appear redistribution. The deflection of east tie-beam would increase suddenly. The mid-span deflection of east tie-beam is larger than that of west tie-beam by 31.7%, and the mid-span deflection of east arch is larger than that of west arch by 21.3%. The deflection of crossbeam at 3L/8 and L/4 sections are respectively larger than those of 5L/8 and 3L/4 sections by 24.7% and 22.5%. The deflection of 3#, 2# and 1# decks are respectively larger than those of 4#, 5# and 6# decks by 16.2%, 24.5% and 28.6%.

Optimization of hanger arrangement in pedestrian tied arch bridge with sparse hanger system

2019 ◽  
Vol 22 (12) ◽  
pp. 2594-2604 ◽  
Author(s):  
Yonggang Tan ◽  
Yuanbin Yao
Keyword(s):  
Mechanical Properties ◽  
Genetic Algorithm ◽  
Numerical Analysis ◽  
Mechanical Behavior ◽  
Live Load ◽  
Optimization Approach ◽  
Dense Network ◽  
Arch Bridge ◽  
Arch Bridges ◽  
Tied Arch Bridge

The hanger arrangement has a decisive influence on the mechanical behavior of the tied arch bridge with network hanger system. Many investigations on highway or railway tied arch bridges show that the arch bridges with dense network hangers are superior to those with vertical hangers under larger live load. However, numerous dense inclined hangers lower the esthetic effect of the bridge, especially for pedestrian tied arch bridges. Consequently, the sparse inclined hanger system is recommended in the design of pedestrian tied arch bridges. However, the amount of possible schemes of the hanger arrangement grows rapidly with the number of hangers increasing beyond 10, rendering great difficulties in searching for proper schemes. In this article, a dimensionless optimization approach based on genetic algorithm is proposed in searching for hanger arrangement schemes. Numerical analysis indicates that the proposed method is effective in the optimization of pedestrian tied arch bridge with sparse inclined hanger system, and some of the feasible hanger arrangement solutions show more excellent mechanical properties.

Sign in / Sign up

Export Citation Format

Share Document