Internal force calculation of half through arch bridge based on elastic foundation beam algorithm

2021 ◽  
Author(s):  
Yurong Ma ◽  
Yuyi Zhang ◽  
Qianwen Han ◽  
Feng Wang ◽  
Yaqiong Jiang ◽  
...  
Keyword(s):  
Elastic Foundation ◽  
Internal Force ◽  
Arch Bridge ◽  
Force Calculation ◽  
Elastic Foundation Beam

scholarly journals Internal force calculation of long span suspension bridge under vertical load based on elastic foundation beam algorithm

2021 ◽  
Vol 283 ◽  
pp. 01031
Author(s):  
Ma Yurong ◽  
Han Qianwen ◽  
Wang Feng ◽  
Li Haixia
Keyword(s):  
Elastic Foundation ◽  
Suspension Bridge ◽  
Internal Force ◽  
Design Calculation ◽  
Vertical Load ◽  
Software Modeling ◽  
Section Design ◽  
Main Component ◽  
Force Calculation ◽  
Elastic Foundation Beam

The calculation of suspension bridge under vertical load is the most important content of suspension bridge design calculation and the most important basis of main component design. Combined with the knowledge of structural mechanics, this paper puts forward the elastic foundation beam algorithm, and deduces the important formulas for the cross-section design and strength comparison of sling, cable and stiffening beam. In use, as long as the parameters are brought into the formula, it is more convenient and fast compared with the complex software modeling. The method proposed in this paper is used to check the strength of the completed Japanese Guanmen bridge, and the results are accurate enough. It is fast and reliable to use this method in the preliminary design and rapid safety assessment of suspension bridge.

Analysis of Large-Span Steel Concrete Railway Arch Bridge Suspender Tension

2013 ◽  
Vol 361-363 ◽  
pp. 1259-1263 ◽  
Author(s):  
Jia Lin Xu
Keyword(s):  
Bending Moment ◽  
Internal Force ◽  
Steel Tube ◽  
Force Balance ◽  
Initial Tension ◽  
Finite Element Program ◽  
Arch Bridge ◽  
Reverse Sequence ◽  
Element Program ◽  
Force Calculation

In this paper the concrete-filled steel tube concrete arch bridge as the research object, through the finite element program MIDAS, analyzes the internal force of the whole bridge, determined the distribution of internal force and the most unfavorable position; Using the force balance method, taking the reasonable stress of the bending moment status to control goals, determines the boom of the bridge as the condition of reasonable internal force; Use fall down method, according to the reverse sequence in order to cut the boom, each cut as a model for internal force calculation and analysis, get the next will be cut derrick's internal force, its value is the order construction boom of the initial tension.

Deformation study of Lining on Overlap Tunnels Based on Elastic Foundation Beam

2011 ◽  
Vol 94-96 ◽  
pp. 1875-1878
Author(s):  
Chun Quan Dai ◽  
Lei Wang ◽  
Yong Ji Wang
Keyword(s):  
Numerical Simulation ◽  
Elastic Foundation ◽  
Short Distance ◽  
Internal Force ◽  
Theoretical Formula ◽  
Force Analysis ◽  
Simulation Test ◽  
Engineering Development ◽  
Elastic Foundation Beam ◽  
Calculating Model

Tunnels of new across the old one with short distance is the emphasis and difficulty in metro engineering development, which has great research values. According to the characteristic of deformation on overlap tunnels with short distance, we put forward the calculating model of lining deformation and internal force analysis. And deduced the formula of calculation on the new tunnel's construction to adjacent ones, then discussed and analyzed the settlement of the point of inflection on soffit lining and the greatest subsidence angle. We verify the theoretical formula about the reliability of the computation and rationality through a series of numerical simulation test against the background of Qingdao overlap tunnels.

Internal Force Calculation of Two-Way Curved Arch Bridge

2012 ◽  
Vol 594-597 ◽  
pp. 1561-1564
Author(s):  
Bao Rong Huo ◽  
Guang Ning Yang ◽  
Xiang Dong Zhang
Keyword(s):  
Bending Moment ◽  
Internal Force ◽  
Arch Bridge ◽  
Traffic Capacity ◽  
Moment Distribution ◽  
Bridge Structures ◽  
Calculation Results ◽  
Load Simulation ◽  
Force Calculation ◽  
Main Arch

Because of two-way curved arch bridge with low design load, less structural steel, improper construction, overloading and poor integrity, when the bridge structure can’t satisfy the carrying capacity and traffic capacity requirements, we urgently need reinforce the bridge, which has become an important link of safety assessment and insurance of the bridge structures. Internal force calculation of two-way curved arch bridge is done, and calculation conclusions of Aohan Bridge are shown. Plane rod unit’s calculation results show that the bridge under the action of steam-20, hang-100 loads, eccentricity of the section at the arch feet in main arch ring beyond allowable eccentricity, a state of large eccentric's stress appears, and on surface of the arch feet appeared tensile crack in the load simulation. The calculation results of the main arch ring shows that a phenomenon of stress concentration exists in the arch feet, in addition to the influence of big eccentric. Technology processing should be considered when do the arch feet reinforcement. Data from the arch ring calculation results, the bridge has certain overload potential. But according to the bending moment distribution, strengthen the resistance bending moment in the arch feet, an allow full play to the potential of concrete iron in the arch rib under the premise of reinforced the positive bending moment.

Internal Force Calculation Method of the Double-Curved Arch Bridge Reinforcement Based on Stress Superposition

2012 ◽  
Vol 178-181 ◽  
pp. 2091-2094
Author(s):  
Yun Zhang ◽  
Xiao Rong Zhou ◽  
Bei Li
Keyword(s):  
Stress Distribution ◽  
Calculation Method ◽  
Internal Force ◽  
Superposition Method ◽  
Actual Situation ◽  
Contrastive Analysis ◽  
Arch Bridge ◽  
Stress Superposition ◽  
Force Calculation ◽  
Main Arch

Increasing the section method is the commonest method in double-curved arch bridge reinforcement. In order to research on the force condition of main arch ring in double-curved arch bridge reinforcement, we use internal force superposition method and stress superposition method to deduce the stress distribution of arch ring, and make contrastive analysis on each construction stage in bridge reinforcement. Internal force superposition method is unsafe; the stress superposition meets the actual situation.

Computing Method of Elastic Foundation Beam by MATLAB and its Application

2011 ◽  
Vol 368-373 ◽  
pp. 2760-2763
Author(s):  
Qiang Wang ◽  
Li Yuan Tong
Keyword(s):  
Elastic Foundation ◽  
Bending Moment ◽  
Internal Force ◽  
Beam Deflection ◽  
Deep Foundation ◽  
Foundation Pit ◽  
Supporting Structure ◽  
Internal Forces ◽  
Computing Method ◽  
Elastic Foundation Beam

The elastic foundation beam method is the main method of stress analysis of the supporting structure of the foundation pit, it can easily calculate the internal forces and displacement of the structure, however, the computing method of elastic foundation beam deflection equation is more complicated. So according to the computation principle and method of elastic foundation beam, a computing program has been programmed by MATLAB mathematical software. The program has been applied to compute the internal force and deformation of deep foundation pit of Suzhou subway station. The variation law of displacement and bending moment of supporting structure during excavation has been obtained. The results of the measured and calculated agree well, and the computing results have efficiently guided and optimized supporting design.

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.

Structural Analysis and Internal Force Calculation of Variable Cross-Section Silo

2012 ◽  
Vol 446-449 ◽  
pp. 429-434
Author(s):  
Rui Ting Ma
Keyword(s):  
Cross Section ◽  
Variable Cross Section ◽  
Internal Force ◽  
Variable Cross ◽  
Axially Symmetric ◽  
Internal Forces ◽  
Differential Element ◽  
Symmetric Load ◽  
Force Calculation ◽  
Constant Section

In this paper, the differential element of constant-section silo wall suffering from axially symmetric load is analyzed. From the results of constant-section silo, the author derives the displacements and internal forces of variable cross-section silo. Through a specific example, this paper compares the displacements , internal forces and concrete consumption of variable cross-section silo with those of constant-section silo, and discusses the merits of variable cross-section silo.

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