Mechanical performance study on joint segment for composite truss cable-stayed bridge

2011 ◽  
Author(s):  
Dongyan Xue ◽  
Yuqing Liu ◽  
Bingfei Liu ◽  
Biao Ma
Keyword(s):  
Mechanical Performance ◽  
Performance Study ◽  
Cable Stayed Bridge

ISOLATION PERFORMANCE STUDY OF THE HONG KONG–ZHUHAI–MACAO BRIDGE ENGINEERING

2013 ◽  
Vol 07 (03) ◽  
pp. 1350018 ◽  
Author(s):  
HONGPING ZHU ◽  
CHULONG CHEN ◽  
AIZHU ZHU ◽  
YONG YUAN
Keyword(s):  
Hong Kong ◽  
Time History ◽  
Bridge Engineering ◽  
Elastic State ◽  
Performance Study ◽  
Vibration Period ◽  
Nonlinear Properties ◽  
Cable Stayed Bridge ◽  
Continuous Girder Bridge ◽  
Girder Bridge

This paper investigates the isolation performances of bid DB02 section of the Hong Kong–Zhuhai–Macao Bridge. The navigable cable-stayed bridge and the non-navigable steel-concrete continuous girder bridge in the high-pier and low-pier regions are taken as an illustration. The finite element models with aseismatic bearings and isolated bearings are established and the seismic time-history analysis under the earthquake levels of P2 and P3 are carried out. The nonlinear properties of LRB, HDR, and FPB isolated bearings and the pile-soil interaction are simulated using bilinear spring elements and layered Winkler soil springs model, respectively. The results show that the bridge structure with isolated bearings is more flexible by extending vibration period. The dissipated hysteric energy can effectively reduce the earthquake energy and the response of the structure. Subject to the earthquake level P3, most piers of the bridge are in elastic state. Subject to the earthquake level P2, the bridge is in perfect elastic state. The isolating effect of the isolated bearings to the continuous girder bridge is better than the cable-stayed bridge with tower and beam consolidation.

Calculation and construction study for the Novel Twin-Deck Cable- Stayed Bridge with shared pylon

2021 ◽  
Author(s):  
Xiangmin Yu ◽  
Dewei Chen
Keyword(s):  
Interaction Effect ◽  
Mechanical Performance ◽  
Construction Method ◽  
Beam Model ◽  
The Novel ◽  
Plate Model ◽  
Field Surveys ◽  
Single Beam ◽  
Cable Stayed Bridge ◽  
Construction Methods

<p>Twin-deck cable-stayed bridge with shared pylon (TDBSP) is an innovative structural arrangement captured with complex mechanical performance and highly interaction effect between two bridges, as the deck layouts are asymmetrical and two bridges share one merged pylon leg. This paper explores the calculation and construction methods of TDBSP, based on the record-breaking Rod El Farag Axis Bridge. Single-beam model (SBM) and beam-plate model (BPM) are firstly established, and the numerical results are compared with field surveys as validations. Then, the interaction effect of two bridges during construction are studied, and a comparison of synchronous construction method (SCM) and asynchronous construction method (ASCM) are investigated during the construction of TDBSP.</p>

Performance Study of a Steel-Concrete Joint for Hybrid Cable-Stayed Bridge with 800m Main Span

2019 ◽  
Author(s):  
Xianming Yu ◽  
Dewei Chen
Keyword(s):  
Cross Sections ◽  
Material Properties ◽  
Structural Performance ◽  
Environmental Constraints ◽  
Performance Study ◽  
Detailed Design ◽  
Bearing Plate ◽  
Cable Stayed Bridge ◽  
Steel Truss ◽  
Concrete Deck

<p>Yachihe Bridge is a record‐breaking cable‐stayed bridge with 800m steel truss deck in the main span. As the bridge side spans are limited in size due to environmental constraints, 220m concrete decks are the optimized solutions for the side spans to balance the weight of steel truss deck in the main span. The joint of concrete deck and steel truss deck is one of the most complex points of the bridge, as it bears the maximum axial force and the structural cross sections, rigidities and material properties are changed at this position. This paper mainly presents the detailed design and numerical analysis for the steel‐concrete joint of Yachihe Bridge to investigate its structural performance. Meanwhile, the numerical results of concrete and steel decks, bearing plate and shear studs of the joint are also discussed.</p>

Deformation and Stress Analysis of an Asymmetric Single Tower Cable-Stayed Bridge on High Speed Railway in Swiveling Process

2014 ◽  
Vol 1079-1080 ◽  
pp. 359-363
Author(s):  
Ru Deng Luo ◽  
Hai Long Wang ◽  
Jie Hui Hu
Keyword(s):  
Stress Analysis ◽  
High Speed ◽  
Mechanical Performance ◽  
Bridge Structure ◽  
High Speed Railway ◽  
Channel Section ◽  
Cable Stayed Bridge ◽  
Bridge Girder ◽  
Bridge Tower

In this paper, we have studied a bridge with span-arrangement 112m+80m+32m,which is a three-span single-tower double cable plane swivel cable-stayed bridge. The bridge girder use channel section and bridge tower and girder consolidate an inverted Y-shaped structure in both directions. 112m + 80m main beams adopt swiveling construction. The bridge structure is novel, loading is complex. This thesis will systematically study the mechanical performance of the bridge in swiveling process.

Mechanical Analysis of the Anchorage Zone of Pylon for Xinjiang Cable-Stayed Bridge Based on Refined Finite Element Model

2013 ◽  
Vol 663 ◽  
pp. 172-176
Author(s):  
Liang Dong Zhu ◽  
Zhi Zhou Bai ◽  
De Wei Chen
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Mechanical Performance ◽  
Element Model ◽  
Mechanical Analysis ◽  
Horizontal Component ◽  
3D Finite Element ◽  
Cable Stayed Bridge ◽  
Cable Force ◽  
Cable Forces

The Pylon of Xinjiang Cable-Stayed Bridge has a special geometric form, of which the anchorage zone adopts the steel-concrete composite structure with built-in steel anchorage box. To investigate the mechanical behavior, the refined 3D finite element model has been established with the shear nails of steel anchorage box simulated. The stress conditions of steel anchorage box and concrete under prestressing bar and stayed cable forces have been then studied. The bearing proportion at the anchorage zone for the horizontal component of cable force has been calculated. Results indicate that the overall mechanical performance of the anchorage zone is excel, which can be a reference for designing of similar structure.

Effect of Ultrasonic Vibration on Structure and Performance of Electrospun PAN Fibrous Membrane

2013 ◽  
Vol 23 ◽  
pp. 96-103 ◽  
Author(s):  
Jing Qiang ◽  
Yu Qin Wan ◽  
Li Na Yang ◽  
Qin Qin Cao
Keyword(s):  
Ultrasonic Vibration ◽  
Surface Defects ◽  
Mechanical Performance ◽  
Dramatic Reduction ◽  
Performance Study ◽  
High Concentration ◽  
Electrospinning Technique ◽  
Ultrafine Fibers ◽  
And Performance ◽  
Vibration Parameters

The major topic covered in this paper is fabrication and performance study of polyacrylonitrile (PAN) ultrafine fibers from high-concentration solutions via a vibration-electrospinning technique. The influences of ultrasonic vibration on the solution properties of high viscous PAN solution as well as surface morphology and mechanical performance of PAN fibrous mats were investigated. The results indicated that: (1) the effect of ultrasonic vibration on the mechanical properties was significant; (2) the vibrorheological effects of ultrasonic vibration appeared not only in dramatic reduction of polymer viscosity, but also in improvement of the electrospinnability of polymer solutions; (3) fibers with smaller diameter, better uniformity and fewer surface defects were prepared with the application of vibration; and (4) the tensile strength of membranes was substantially enhanced at optimized vibration parameters comparing that without vibration treatment.

scholarly journals Study on Design of Concrete Box Girder of A Railway Swivel Cable-Stayed Bridge

2021 ◽  
Vol 237 ◽  
pp. 03026
Author(s):  
Yang Liu ◽  
Tenghui Ding ◽  
Qinyun Xie ◽  
Guangli Xu ◽  
Chao Li
Keyword(s):  
Prestressed Concrete ◽  
Mechanical Performance ◽  
Dead Weight ◽  
Box Girder ◽  
Finite Element Software ◽  
Cable Stayed Bridge ◽  
Floating System ◽  
Concrete Box Girder ◽  
The Dead ◽  
Spherical Hinge

A swivel cable-stayed bridge over the existing railway is a span across the existing railway. The recommended scheme for the main bridge is (128 + 388 + 128) m steel mixed composite beam swivel diagonal pull bridge with span. The cables of the diagonal pull bridge are arranged according to the fanshaped central double cable plane, taking into account the mechanical performance and aesthetics. The bridge structure adopts semi floating system. The concrete swivel diagonal pull bridge is adopted in the comparison scheme. The design of the bridge is three spans and (138 + 268 + 138) m prestressed concrete box girder is adopted. The cables are arranged according to the central double cable plane, and the bridge composition adopts the consolidation system. Considering the needs of bridge operation and maintenance in the later stage of the bridge, when the dead weight of concrete diagonal pull bridge is within the ideal range, the concrete swivel diagonal pull bridge can be preferred. In order to calculate the dead weight of the selected bridge, the author uses the finite element software to model the whole bridge and calculate the weight of the bridge. The results show that the dead weight of the concrete swivel diagonal pull bridge is too large, which has exceeded the maximum bearing capacity of the existing spherical hinge. In order to continue to use the concrete swivel diagonal pull bridge scheme, it is necessary to optimize the design of the concrete swivel diagonal pull bridge scheme.

Performance study of polyurethane/silicon carbide composite repairing asphalt pavements

2014 ◽  
Vol 34 (4) ◽  
pp. 369-377 ◽  
Author(s):  
Li Li ◽  
Ji Li ◽  
Yali Zhao ◽  
Wanjie Li ◽  
Hongbin Wang ◽  
...  
Keyword(s):  
Silicon Carbide ◽  
Mechanical Performance ◽  
Weight Ratio ◽  
Toluene Diisocyanate ◽  
Asphalt Pavements ◽  
Performance Tests ◽  
Performance Study ◽  
X Ray Diffraction ◽  
Scanning Calorimetry ◽  
Addition Polymerization

Abstract Polyurethane (PU)/silicon carbide composites, which can rapidly repair cracked asphalt pavements, were synthesized by addition polymerization. The materials were characterized by Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), X-ray diffraction (XRD) and mechanical performance tests. Liquid diphenylmethane diisocyanate (L-MDI) type prepolymer/toluene diisocyanate (TDI-80) type prepolymer weight ratio, curing agent and silane coupling agent 3-aminopropyltriethoxysilane (KH550) were investigated mainly in this paper. In addition, silicon carbide was treated with KH550. Results show that the crystal structure of silicon carbide had subtle changes and the correct amount of KH550 can enhance the mechanical performance and thermal endurance.

Sign in / Sign up

Export Citation Format

Share Document