Design and analysis of the Wing-spread Bridge: a pedestrian bridge in the Binjiang Avenue, Shanghai

2021 ◽  
Author(s):  
Lanxin Luo ◽  
Ao Wang ◽  
Zhanhang Liu ◽  
Ye Xia ◽  
Limin Sun
Keyword(s):  
Structural Design ◽  
Fe Model ◽  
Horizontal Force ◽  
Natural Conditions ◽  
Pedestrian Bridge ◽  
Ribbon Structure ◽  
Two Sides ◽  
Bridge Tower

<p>Along Binjiang Avenue, the landscape in Shanghai, China, a footbridge is needed to connect the two sides of the Qiantanyoucheng park. In this paper, the "Wing-spread Bridge" is designed and analyzed based on the environment and human requirements. The initial inspiration for this bridge comes from the stress ribbon structure. In the Wing-spread Bridge's structural design, the stress ribbon and arch are combined to reduce both components' horizontal force. Meanwhile, abutment, arch foot, and bridge tower are combined as one tower, and this tower is shaped like a dove according to the surrounding natural conditions. The combination and adjustment of the components make the structure beautiful and competitive in the landscape. Finally, this bridge's FE model is established, and the static is carried out based on it. The results show that the bridge can meet the specification requirements in static aspects.</p>

scholarly journals BEHAVIOUR ANALYSIS AND ENGINEERING CALCULATION OF THE STRESS-RIBBON BRIDGE WITH EXTERNAL TENDONS / DVIJUOSČIO LANKSTAUS KABAMOJO PLIENO TILTO ELGSENOS ANALIZĖ IR INŽINERINIS SKAIČIAVIMAS

2014 ◽  
Vol 5 (4) ◽  
pp. 141-146
Author(s):  
Giedrė Sandovič ◽  
Algirdas Juozapaitis
Keyword(s):  
Thrust Force ◽  
Engineering Calculation ◽  
Load Bearing ◽  
Pedestrian Bridge ◽  
External Tendons ◽  
Ribbon Structure ◽  
Current Article ◽  
General Displacement ◽  
Calculation Analysis ◽  
Bearing Structure

The current article discusses a single-span composite steel pedestrian bridge, the load-bearing structure of which is comprised of a stress-ribbon with extended tendons. The analysis is focused on the behaviour of such structure under symmetric loads. The article reviews the general displacement thrust force of load-bearing suspension structures of such bridge as well as presents calculation analysis values of such displacements and the thrust force. In addition, it provides results of the numerical experiment and comparative analysis of the stress-ribbon structure with extended tendons. Santrauka Straipsnyje aptariama vieno tarpatramio pėsčiųjų kombinuotų tiltų lanksti dvijuostė kabamoji konstrukcija. Analizuojama tokios konstrukcijos elgsena veikiant simetrinėms apkrovoms. Apžvelgiami tokių tiltų laikančiųjų kabamųjų konstrukcijų bendrieji poslinkiai ir skėtimo jėgos, pateikiamos tokių poslinkių ir skėtimo jėgų skaičiavimo analizinės išraiškos. Pateikiami skaitinio eksperimento rezultatai, bei vienajuostės ir dvijuostės kabamųjų konstrukcijų lyginamoji analizė.

Research on the Twist of Z-Section Steel in Cold Roll Forming

2012 ◽  
Vol 159 ◽  
pp. 244-248
Author(s):  
Shi Jian Yu ◽  
Yu Liu ◽  
Zhi Yun Shi
Keyword(s):  
Position Angle ◽  
Fe Analysis ◽  
Contact Forces ◽  
Roll Forming ◽  
Stress And Strain ◽  
Fe Model ◽  
Bending Moments ◽  
Cold Roll Forming ◽  
Cold Roll ◽  
Two Sides

During the cold rolling forming of non-symmetric Z-section steel, the twist will appear because two sides of the blank suffering bending moments of the same direction. In this paper, simplified FE model was used to simulate the closing process of the rolls. The contact forces of the rollers on blank, and the stress and strain of the blank was obtained by FE analysis, and relations between section torque and the position angle θ as studied and the result that when θ=100 the torque is minimum was discovered. The further detailed calculations showed that angle θ was only correlative with the geometry of the product section and didn’t change with the altering of material properties.

scholarly journals THE DESIGN OF A SLOTTED VERTICAL SCREEN BREAKWATER

1986 ◽  
Vol 1 (20) ◽  
pp. 138 ◽  
Author(s):  
J.D. Gardner ◽  
I.H. Townend ◽  
C.A. Fleming
Keyword(s):  
Structural Design ◽  
Rocky Shore ◽  
City Council ◽  
Long Distance ◽  
North East ◽  
The North ◽  
South West ◽  
Marine Site ◽  
A Site ◽  
Two Sides

This paper describes Che wave studies, model testing and structural design of a 250 metre long slotted vertical screen breakwater for a marina at Plymouth, England. The marina is being developed by Plymouth City Council to provide a purpose built facility for hosting the major long distance races that start or finish at Plymouth, in addition to the usual marina facilities for private boat owners. After examining three alternative locations Plymouth Council selected a site in the north-east corner of Plymouth Sound as shown in Figure 1. The site is confined on two sides by existing shipping channels and by a rocky shore on the land side. Exposure to wave attack is limited to the south west sector. Because the existing seabed at the marine site was the responsibility of the Duchy of Cornwall, an Act of Parliament was required before Plymouth Council could commence construction. The Act contains clauses regulating the use of the marina and the permissable changes to the wave conditions in the adjacent shipping channels.

scholarly journals A VIBRATION-BASED STRUCTURAL IDENTIFICATION OF A PEDESTRIAN BRIDGE BY 3D SMART ACCELERATION SENSORS AND HIGH RESOLUTION FE MODEL

2014 ◽  
Vol 70 (2) ◽  
pp. I_887-I_897
Author(s):  
Takanori KADOTA ◽  
Yasunori MIYAMORI ◽  
Akito OKAMOTO ◽  
Ryosuke WATASAKI ◽  
Shuichi MIKAMI ◽  
...  
Keyword(s):  
High Resolution ◽  
Structural Identification ◽  
Fe Model ◽  
Pedestrian Bridge ◽  
Acceleration Sensors

Platform Centered Reduction: A Process Capturing the Essentials for Blade-Damper Coupled Optimization

2020 ◽  
Author(s):  
Chiara Gastaldi ◽  
Muzio M. Gola
Keyword(s):  
Contact Forces ◽  
Fe Model ◽  
Euler Beam ◽  
Final Design ◽  
Neck Thickness ◽  
Turbomachinery Blades ◽  
Speed Up ◽  
Clear Identification ◽  
Resultant Forces ◽  
Two Sides

Abstract The purpose of this document is to continue along the line of research of the authors in the direction of developing an attractive tool for designers in the initial design phase of the damping of the turbomachinery blades. In particular, in order to guide their initial choice of a dry friction underplatform damper in the most appropriate way. The paper shows how, to this purpose, certain reasonable simplifications are introduced in the procedure and in the model, leaving the customary full high fidelity computations to the final design verification analysis. The key simplifications here considered are: – the blade neck is modelled with Euler beam finite elements so to speed up the updating of its dimensions during the optimisation process; – the contact forces exerted by the dampers on the two sides of the blade platform are represented by the resultant forces and moments applied to a reference point on the platform, associated to its displacements and rotations; – as an improvement to the model proposed in the paper presented at Turbo Expo 2019, the airfoil is now obtained from a full 3D FE model after a component mode synthesis reduction; this choice is justified by the facts that the airfoil is by large the item with most complex shape and that during the coupled optimization of the damper the airfoil is considered to be of fixed shape. It is shown that the process captures the essentials of the nonlinear dynamics of the blade-damper problem without sacrificing in any way the accuracy of the results. This hybrid model is then employed in the process where the domains of optimal matching between the damper and the blade is searched for by exploring the influence of blade neck thickness (flexibility) and damper mass. Such a purposely simplified process allows a clear identification of relationships between relevant blade features and response with a focus on fatigue life. At the same time, it allows an assessment of the interplay between blade parameters and damper parameters in determining the modal features and the damping capabilities. It is shown how different matching solutions may be identified depending on the expected forcing level on the blade.

scholarly journals MODAL PROPERTIES IDENTIFICATION OF AN FRP PEDESTRIAN BRIDGE WITH REINFORCEMENT AT NODES AND FE MODEL

2015 ◽  
Vol 71 (2) ◽  
pp. I_841-I_848
Author(s):  
Chul-Woo KIM ◽  
Gen HAYASHI ◽  
Yasuo SUZUKI ◽  
Kunitaro HASHIMOTO ◽  
Kunitomo SUGIURA ◽  
...  
Keyword(s):  
Fe Model ◽  
Pedestrian Bridge ◽  
Modal Properties

Contest for a Bridge for Pedestrians and Bicycles across the River Minho?

2021 ◽  
Author(s):  
Maria Del Mar Goberna Pérez ◽  
Gonzalo Goberna Pérez ◽  
Diego Velayos López
Keyword(s):  
Structural Design ◽  
Multidisciplinary Teams ◽  
Pedestrian Bridge ◽  
Structure Engineering

<p>This paper describes the process of designing an architectural and structural design for the contest of a pedestrian bridge across the river Minho. The process of analyzing design conditions and adopting a solution is developed through teamwork between the architects and the structure engineering studio. The solution finally adopted, and its structural interest is described in such a way that it allows to establish a conclusion on the experience of participating in multidisciplinary teams of different companies and their collaboration, considering the adjusted deadlines of a competition</p>

The Key Measures on Safety and Linear Control in Catwalk Erection

2015 ◽  
Vol 744-746 ◽  
pp. 837-844 ◽  
Author(s):  
Min Liu ◽  
Guo Bang Xia ◽  
Lai Jun Liu ◽  
Yong Rui Chen ◽  
Xiao Yu Zhang
Keyword(s):  
Internal Force ◽  
Control Measures ◽  
Linear Control ◽  
Control Methods ◽  
Horizontal Force ◽  
Safety Control ◽  
Multiple Factors ◽  
Main Factors ◽  
Effects Of Temperature ◽  
Bridge Tower

Multiple factors affect internal force and linear of catwalk, meanwhile, there are many safety and quality risks caused by these factors during its erection. So the control of the catwalks during its erection is very important. Based on the Puli grand bridge, the key control technology of catwalks erection is studied in this paper . The unstressed length of track cable in catwalks and the ultimate unbalance horizontal force on top of bridge tower during erection are calculated, which are part of precondition for safety control. The effects of temperature and tower deviation, which are main factors influenced the linear of catwalk track rop, are analyzed in this paper. Then the safety and linear control measures are put forward. The construction result shows that the safety control methods and linear adjustment measures are effective.

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