Continuous Arch Bridges Over Lake Tisza, Hungary

2021 ◽  
Author(s):  
Gábor Pál ◽  
Attila Dési ◽  
András Kemenczés
Keyword(s):  
Natural Environment ◽  
Construction Process ◽  
Tourist Destination ◽  
Unesco World Heritage ◽  
Continuous Structure ◽  
Truss Bridges ◽  
Total Length ◽  
Construction Methods ◽  
Tisza River ◽  
Arch Bridges

<p>The design and construction process of the unique cycling bridges at Lake Tisza are presented in this article. The 4 new bridges are parts of the closing segment of the cycle route around the artificial reservoir, which is a popular tourist destination in Hungary, and part of the UNESCO World Heritage. The proximity of the natural environment motivated the use of organic, flowing shapes.</p><p>The unique Eger- and Szomorka bridges are independent continuous half-through arch bridges, 8 spans with a total length of 308.46m, and 3 spans with a total length of 86.30 m, respectively. The bridge over River Tisza is a 5 span bridge with a total length of 279.47 m, which is placed on the extended piers of the existing roadway bridge. It consists of 2 deck truss bridges on the side-spans and 3 network arch bridges in the mid- spans. A 5.70 m span bascule bridge over one of the draining canals of the lake was also accomplished as part of the project.</p><p>The Eger and Szomorka bridges are internationally unique due to the fact that the Designers have dreamed a continuous sinusoid wave on the supports; which, by twirling under and above the deck, results in a continuous structure. The successful construction of the Tisza River Bridge also required some special and unprecedented construction methods.</p>

Bridge bearing solutions that facilitate quick and efficient bearing installation and bridge construction

2019 ◽  
Author(s):  
Simon Hoffmann ◽  
Amit Kutumbale ◽  
Danilo Della Ca'
Keyword(s):  
Load Distribution ◽  
Construction Method ◽  
Construction Process ◽  
Vital Function ◽  
Bridge Construction ◽  
Construction Methods ◽  
Efficient Construction ◽  
Critical Components ◽  
Bridge Bearing ◽  
Segmental Bridge

<p>A bridge’s bearings, arguably its most critical components, perform a vital function throughout the bridge’s service life, but the bearings used can also have a significant impact on the bridge construction process. Suitably designed adjustable bearings are an integral part of the incremental launch method of bridge construction, for instance, which can be a very efficient construction method. Adjustable bearings may also support other bridge construction methods, such as segmental bridge construction, where fixities/freedoms that applied during the construction phase require to be changed before the bridge enters service. Lifting bearings, the height of which can be increased, may enable a lack of precision in the structure to be tolerated, and measuring bearings may enable load distribution during bridge construction to be verified, where this is required by the construction method. Design features of otherwise standard bearings that support quick and high-quality installation can also contribute towards the efficiency of the overall bridge construction process, as can the use of bearing designs which minimize bearing size. Bearing solutions and features that facilitate bearing installation and bridge construction in ways such as these are described.</p>

scholarly journals The Influence of Destination Image on Tourist Intention and Decision to Visit Tourist Destination (A Case Study of Pemuteran Village in Buleleng, Bali, Indonesia)

2017 ◽  
Vol 1 (1) ◽  
pp. 81 ◽  
Author(s):  
Ni Wayan Marsha Satyarini ◽  
Myrza Rahmanita ◽  
Sakchai Setarnawat
Keyword(s):  
Local Government ◽  
Significant Influence ◽  
Natural Environment ◽  
Quantitative Method ◽  
Local Communities ◽  
Destination Image ◽  
Sampling Techniques ◽  
Tourist Destination ◽  
Independent Variable

This study examines the effects of the destination image to tourist intention and decision to visit tourism destination in Pemuteran Village, Bali. Destination image is an independent variable, tourist intention to visit serves as an intervening variable and decision to visit is a dependent variable. Explanatory research with quantitative method is employed. The number of sample is 112 respondents. Purposive sampling techniques is applied with criteria of Pemuteran village tourists. Data are collected with questionnaires and processed with path analysis. These results indicate that the variable destination image has a direct and significant effect on tourist intention to visit by 11.3%. Variable destination image has a direct and significant influence on the decision to visit by 37.5%. Variable tourist intention to visit has been direct and significant influence on the decision to visit amounted to 16.2%. Based on these results, Pemuteran village should keep trying to build a positive image and to improve the communication between the local government and local communities to strengthen cooperation to improve the natural environment in Pemuteran village.

The Ucisv-Ver Popular Housing Programme, Mexico

2005 ◽  
Vol 30 (4) ◽  
pp. 48-50
Author(s):  
Cristina Almazán
Keyword(s):  
Design Process ◽  
The State ◽  
Construction Process ◽  
Construction Methods ◽  
Community Organisation ◽  
Self Help ◽  
Incremental Housing ◽  
And Training ◽  
Housing Programme ◽  
Micro Credit

This incremental housing programme combines resources from participating families with traditional joint savings schemes and micro-credit to help those who have no access to formal credit to build new homes or improve their existing accommodation. Families are involved in the design process of their homes and training is provided in self-help construction methods. The construction process is phased to avoid families becoming financially overstretched. The consolidation of community organisation and solidarity, the empowerment of women and development of savings capacity are important elements of this well-established programme that has to date funded the construction and/or improvement of over 800 homes in the state of Veracruz, Mexico.

Practical Calculation of Cable-Stayed Arch Bridge Lateral Stability

2014 ◽  
Vol 587-589 ◽  
pp. 1586-1592 ◽  
Author(s):  
Wei Lu ◽  
Ding Zhou ◽  
Zhi Chen
Keyword(s):  
Calculation Method ◽  
Practical Calculation ◽  
Lateral Stability ◽  
Bridge Structure ◽  
Construction Process ◽  
Energy Principle ◽  
Arch Bridge ◽  
Long Span ◽  
Arch Bridges ◽  
Cable Stayed Bridges

A long-span cable-stayed arch bridge is a new form of bridge structure that combines features of cable-stayed bridges with characteristics of arch bridges. In the present study, we derived a practical calculation method for the lateral destabilization critical loading of cable-stayed arch bridges during the construction process based the energy principle. The validity of the method was verified with an example. The calculation method provides a quick and efficient way to evaluate the lateral stability of a cable-stayed arch bridge and a concrete filled steel tubular arch bridge during the construction process.

Research on Spacial Displacement Regulations in Soft Surrounding Rock Tunnel

2013 ◽  
Vol 690-693 ◽  
pp. 886-889
Author(s):  
Bao Long Lin
Keyword(s):  
High Speed ◽  
Surrounding Rock ◽  
Construction Process ◽  
High Speed Rail ◽  
Tunnel Stability ◽  
Construction Methods ◽  
Minimum Principal Stress ◽  
Initial Support ◽  
Rock Tunnel ◽  
Weak Surrounding Rock

Based on the engineering background of Dongkeling tunnel of Guizhou-Guangzhou high-speed rail, construction process in soft surrounding rock is simulated by using finite difference software——FLAC according to large-deformation characteristics in water-rich and weathering altered granite weak surrounding rock. Several aspects, such as vault settlement, invert uplift, clearance convergence, surface settlement, the maximum and minimum principal stress of the initial support and plastic zone of surrounding rock, are analyzed to determine the tunnel stability with different construction methods.

scholarly journals Dynamic Numerical Analysis of Displacement Restraining Effect of Inclined Earth-Retaining Structure during Embankment Construction

2019 ◽  
Vol 9 (11) ◽  
pp. 2213 ◽  
Author(s):  
Su-Won Son ◽  
Minsu Seo ◽  
Jong-Chul Im ◽  
Jae-Won Yoo
Keyword(s):  
Numerical Analysis ◽  
Maximum Stress ◽  
Lateral Displacement ◽  
Retaining Wall ◽  
Field Tests ◽  
Front Wall ◽  
Construction Process ◽  
Construction Methods ◽  
Excavation Process ◽  
The Stability

Retaining walls are generally used for temporary installations during the excavation process of a construction project. They are also utilized to construct embankments in order to extend a railway facility. In this case, a retaining wall is installed during the construction process and contributes to the resistance of large amounts of stress, including the railway load. However, it is generally difficult to retain walls to maintain their stability. Therefore, alternative construction methods, such as the use of an inclined earth-retaining wall, have been utilized to suppress the lateral displacement. The stability is verified in advance through field tests; however, the maximum stress acting on the railway is thought to be the concentrated railway load. In this study, a two-dimensional numerical analysis was conducted by changing the railway load to a dynamic load. The analysis was applied according to the number of H-piles of the same length (10 m) when only the front wall was installed and when a back support was also applied. It was determined that the lateral displacement of the latter case is smaller than that of the former, whereas the resistance to dynamic loading of the former case is greater.

Aesthetic Guidelines for Older Bridges

1996 ◽  
Vol 1549 (1) ◽  
pp. 42-47
Author(s):  
Gregory F. DeMond
Keyword(s):  
Project Manager ◽  
Safety Requirements ◽  
Truss Bridges ◽  
Historical Significance ◽  
The Past ◽  
Public Sentiment ◽  
Parallel Structures ◽  
Arch Bridges ◽  
The Aesthetic ◽  
Alternative Solutions

As the nation's infrastructure ages, many older bridges face rehabilitation or replacement. Many of these structures have historical significance, and others have become community landmarks. Distinctive metal truss bridges and various concrete arch bridges still grace the nation's highways, but they are rapidly disappearing because they cannot meet the safety requirements of modern highway usage. As a result, where roadway and river crossings were once defined by expressive, sometimes monumental spans that made the passage truly an experience, travelers now speed efficiently over unobtrusive structures, often unaware they were ever on a bridge. Engineers are becoming increasingly aware of the undercurrent of public sentiment for preserving these links to the past. Opposition to replacement can delay needed improvements for months and even years, but it can be overcome by incorporating the existing bridge into alternative solutions that meet both the functional needs and the aesthetic desires of the community. When an older bridge is to be part of the new crossing solution, what are the aesthetic considerations for the bridge designer or the project manager? The aesthetic impact of various alternative solutions involving older bridges is discussed, including compatibility of parallel structures when different bridge types are involved, importance of viewpoints, and aesthetic impact of various preservation measures such as cathodic protection. In addition, guidelines are provided and examples of various solutions are shown.

scholarly journals Study on the Carbon Emissions in the Whole Construction Process of Prefabricated Floor Slab

2020 ◽  
Vol 10 (7) ◽  
pp. 2326
Author(s):  
Aisan Kong ◽  
Haibo Kang ◽  
Siyuan He ◽  
Na Li ◽  
Wei Wang
Keyword(s):  
Carbon Emissions ◽  
High Energy ◽  
Construction Process ◽  
Floor Slab ◽  
Construction Methods ◽  
Calculation Results ◽  
Three Stages ◽  
Traditional Construction ◽  
High Energy Consumption

The construction industry is characterized by high energy consumption and high carbon emissions. With growing concern about climate change, environmental protection is becoming increasingly important. In this paper, the whole construction process of prefabricated floor slab (PFS) is divided into three stages: production, transportation, and construction stages. Carbon emissions are calculated based on the life cycle assessment (LCA) method. A case study of PFS construction in Shaoxing city, China, was examined, and the calculation results were compared and evaluated with the traditional construction methods, which showed that in the production stage, carbon emissions increased due to mechanical operations during the prefabrication process. In the transportation stage, carbon emissions also increased due to the heavier prefabricated components during the transportation process. During the on-site construction stage, carbon emissions considerably decreased due to the lower hoisting frequency and less on-site pouring.

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