Research on Cable Anchorage Systems for Self-Anchored Suspension Bridges with Steel Box Girders

Nie, Jianguo; Tao, Mu‐Xuan; Fan, Jian‐Sheng

doi:10.1061/(asce)be.1943-5592.0000190

Cited by 20 publications

(6 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The unreliability region in traditional local-elaborate models is pointed out by Nie and Tao et al (2011) in researches on the cable anchorage system of self-anchored suspension bridges. The unreliable region is then determined as the Fuzzy Region on the contrary to the Saint-Venant Region by Nie and Zhou et al (2013).…”

Section: Methodology: 4d Multi-scale Modeling Methodsmentioning

confidence: 99%

4D Multi-Scale Analysis of the Hybrid Zone for Cable-Stayed Bridges with Steel-Concrete Hybrid Girders

Zhou¹,

Ning²,

Fan³

et al. 2014

Computing in Civil and Building Engineering (2014)

View full text Add to dashboard Cite

The cable-stayed bridge with steel-concrete hybrid girders is one of the most widely used bridge types in China. As the key sub-structure of this kind of bridge, the hybrid zone which consists of girders in the region jointing the steel girder and the concrete girder plays an important role securing the safety and good serviceability of the entire bridge, and consequently the study on the mechanical behavior of the hybrid zone is essential for both the analysis and design of the whole bridge. However, due to the strong dependence of the Saint-Venant Principle and significant influence of the Fuzzy Region which cannot be quantitatively determined, the traditional local-elaborate modeling method for the study is limited by its dim Saint-Venant Region-Fuzzy Region boundary, leading to unreliable analysis results and enormous trial and error works. To tackle this problem, the multi-scale modeling method is introduced in this paper, employing the flexible boundary conditions (flexible BCs) for the simulation of the complex boundary condition of the hybrid zone. The fourth dimension is time. In order to gain results closer to the realistic behavior of the bridge at the finished date, it is considered to model the construction process. A 4D multi-scale model of the hybrid zone is then established according to the prototype of an actual cable-stayed bridge project in Chongqing, China. Simultaneously, a local-elaborate model is built for comparison. Comparison study of the finite element models demonstrates that analysis results of the 4D multi-scale model are reliable without the influence of the Fuzzy Region. The model is more accurate, reliable and hence widely applicable. It is concluded that the 4D multi-scale modeling method may offer a new approach for the analysis and monitor of the hybrid zone for cable-stayed bridges with steel-concrete hybrid girders in the future.

show abstract

Section: Methodology: 4d Multi-scale Modeling Methodsmentioning

confidence: 99%

4D Multi-Scale Analysis of the Hybrid Zone for Cable-Stayed Bridges with Steel-Concrete Hybrid Girders

Zhou¹,

Ning²,

Fan³

et al. 2014

Computing in Civil and Building Engineering (2014)

View full text Add to dashboard Cite

show abstract

“…Although the technology reduces both environmental impact and traffic disruption, the use of expensive temporary structures (lots of stayed cables and heightened segments of the pylon) increases onsite construction cost and time. Traditional construction technologies for self-anchored suspension bridge: (a) Temporary supports technology [13,26]; (b) temporary earth-anchor technology [18]; and (c) temporary stayed-cables technology [19,20].…”

Section: Environmental Impact and Traffic Disruption Caused By Traditmentioning

confidence: 99%

“…In this study, a novel temporary pylon-anchor (TPA) technology is proposed to solve the issue in a safe and cost-effective manner for minimizing environment and traffic disruptions. As shown in Figure 2, the horizontal cable force is transferred to the pylon through the side span girder and is Traditional construction technologies for self-anchored suspension bridge: (a) Temporary supports technology [13,26]; (b) temporary earth-anchor technology [18]; and (c) temporary stayed-cables technology [19,20].…”

Section: Novel Tpa Technology To Improve Construction Sustainabilitymentioning

confidence: 99%

A Novel Construction Technology for Self-Anchored Suspension Bridge Considering Safety and Sustainability Performance

Wang

Dong

et al. 2020

Sustainability

View full text Add to dashboard Cite

To promote sustainable development of civil infrastructures, minimizing environmental impact and mobility disruptions have been elevated to a higher priority during decision-making for bridge construction scheme. This study presents a novel temporary pylon-anchor (TPA) technology for construction of self-anchored suspension bridges by considering not only safety performance, but also environmental impacts. A practical assessment method and index of sustainability associated with bridge construction technology are established to facilitate the selection of construction schemes. The sustainability index takes the environmental impact, traffic disruption, onsite construction materials and equipment, onsite construction cost, and onsite construction risk into consideration. The sustainability index associated with both conventional and novel construction methods is assessed and compared in this paper. Specifically, a novel girder-pylon antithrust system (GPAS) is proposed, which is the crucial component of the TPA technology in engineering application. In addition, an analytical approach is developed, considering both global load-carrying capacity and local stress distribution within the design and construction of the GPAS. The applicability and rationality of the proposed construction technology are illustrated by the successful application in real-world engineering. The field tests and sustainability assessment during the construction stage reveal that the proposed sustainability assessment method and analytical approach can facilitate the implementation of sustainable construction for self-anchored suspension bridges by considering both construction safety and sustainability.

show abstract

“…e change of the saddle position will lead to the change of the main cable shape of the main span and the anchor span cable force. e anchor span of the composite saddle is controlled by the cable strand tension [1][2][3], and the accuracy of cable force adjustment will affect the reliability of the overall structure of the suspension bridge [4][5][6][7][8][9]. e composite saddle is directly connected with the main cable of the main span.…”

Section: Introductionmentioning

confidence: 99%

Strain Incremental Adjustment Method of Cable Force of Composite Saddle Anchor Span of Single-Tower Single-Span Ground-Anchored Suspension Bridge

Wang

Da-bing³

et al. 2021

Mathematical Problems in Engineering

View full text Add to dashboard Cite

To improve the efficiency of cable force adjustment of composite saddle anchor span of single-tower single-span ground-anchored suspension bridge, a strain incremental adjustment method is proposed. The analytical calculation model is established according to the relative spatial position of the cable strand and the saddle groove of the composite saddle, and the target cable force of the cable strands is calculated by the target position of the composite saddle in the cable-stayed bridge and construction phases. Considering the coupling relationship between the cable strand and the composite saddle, the calculation formula of the change in main span main cable force and anchor span cable force after the adjustment of a single cable strand is derived. Based on the condition of equilibrium of forces along the slip surface of the composite saddle, the slip amount of composite saddle after a round of cable strand adjustment is obtained, then the adjustment amount of actual construction of the cable strands is also obtained through the strain incremental adjustment method. With the help of a numerical simulation platform, the calculation program of the cable force adjustment of composite saddle anchor span is established by an iterative solution method. In this paper, taking the Jinsha River Bridge at Hutiao Gorge as a research object, the adjustment of cable force of composite saddle anchor span is analyzed and calculated. The research results indicate that the calculated cable force is obtained by the strain incremental adjustment method, and it is similar to the measured cable force. The cable strand adjustment and optimization method avoids excessive repeated stretching and relaxation of a single cable strand in the process of multiple rounds of cable strand adjustment and reduces the amount of construction adjustment. This method can effectively reduce the times of cable strand adjustment and improve the efficiency of adjusting the anchor span cable force.

show abstract

Research on Cable Anchorage Systems for Self-Anchored Suspension Bridges with Steel Box Girders

Cited by 20 publications

References 6 publications

4D Multi-Scale Analysis of the Hybrid Zone for Cable-Stayed Bridges with Steel-Concrete Hybrid Girders

4D Multi-Scale Analysis of the Hybrid Zone for Cable-Stayed Bridges with Steel-Concrete Hybrid Girders

A Novel Construction Technology for Self-Anchored Suspension Bridge Considering Safety and Sustainability Performance

Strain Incremental Adjustment Method of Cable Force of Composite Saddle Anchor Span of Single-Tower Single-Span Ground-Anchored Suspension Bridge

Contact Info

Product

Resources

About