Bridge over Canal Laranjeiras, Laguna, Brazil

2015 ◽  
Vol 1106 ◽  
pp. 183-186
Author(s):  
Richard Novák ◽  
Jiří Stráský ◽  
Petr Kocourek ◽  
Leonard Šopík
Keyword(s):  
Federal Government ◽  
Conceptual Design ◽  
Main Part ◽  
Box Section ◽  
Cable Stayed Bridge ◽  
Total Length ◽  
Navigation Channel ◽  
Main Plane ◽  
South Of Brazil ◽  
The Town

On the south of Brazil the main Brazilian highway pass around the town Laguna only on a dual lane carriage way. There are regular traffic congestions with several hours of delay. The federal government invests a lot of money to increase the capacity of the main highway. The bridge over Canal Laranjeiras takes part of these improvements. It has a total length of 2 800m and overpasses two times the railway, the Laguna bay to Imauri and future navigation channel Laranjeiras. Its main part consists of 400m length of cable-stayed bridge with two pylons a 200m main span. The pylons are 76m height and are formed by box section. The cable-stayed part is situated in plan curvature and the main plane of longitudinal stays is supplemented by two planes of transversal stays for each pylon. The paper deals with conceptual design of the bridge and construction methodology.

Wind Tunnel Test and the Analysis of Buffeting Performance of Free-Standing Tower of Cable-Stayed Bridge under Yaw Wind

2012 ◽  
Vol 532-533 ◽  
pp. 215-219
Author(s):  
Guo Hui Zhao ◽  
Yu Li ◽  
Hua Bai
Keyword(s):  
Wind Speed ◽  
Wind Tunnel ◽  
Wind Tunnel Test ◽  
Free Standing ◽  
Buffeting Response ◽  
Cable Stayed Bridge ◽  
Aeroelastic Model ◽  
Navigation Channel ◽  
Yaw Angle

The buffeting performance of free-standing tower of JiangHai Navigation Channel Bridge, a cable-stayed bridge, under yaw wind is investigated by means of wind tunnel test of aeroelastic model. It is found that the variation of buffeting response of free-standing tower with wind yaw angle is not monotonous. The lateral buffeting response on the top of the free-standing tower reach their minimal values and maximal values at around 150°and 180°of wind yaw angle respectively and the longitudinal buffeting response attain their maximal values at around 90°of wind yaw angle. Also, at the 2/3 height of the tower the lateral buffeting response and torsional buffeting response get their minimal values at around 150°of wind yaw angle, and at around 180°achieve the maximal values. It is also seen that, the buffeting response changes with the wind speed at a conic curve approximately.

The Spanish-Dutch War and the Policy of the Spanish Crown toward the Town of Sao Paulo

Itinerario ◽  
2002 ◽  
Vol 26 (1) ◽  
pp. 107-125
Author(s):  
Rafael Ruiz
Keyword(s):  
Sao Paulo ◽  
Spanish Empire ◽  
Dutch Republic ◽  
São Paulo ◽  
The South ◽  
The North ◽  
South Of Brazil ◽  
The Town ◽  
Made In ◽  
United Provinces

Historians have made in depth studies on the consequences of the Dutch incursions and invasion into the north and northwest of Brazil, for both the Spanish Empire and the United Provinces of the Dutch Republic. The purpose of this paper is to show that the war between Spain and the Dutch Republic also affected the south of Brazil and that it forced Spain to adopt measures that altered the policy of the Spanish Crown regarding Sao Paulo.

The Justice to Which We Are Entitled

2018 ◽  
pp. 94-124
Author(s):  
Malinda Maynor Lowery
Keyword(s):  
Federal Government ◽  
Main Part ◽  
Blood Quantum ◽  
State Recognition ◽  
Indian Schools ◽  
Robeson County ◽  
Late Nineteenth ◽  
The Government ◽  
Name Changes ◽  
Official Recognition

As the lines between “white” and “colored” hardened in North Carolina in the late nineteenth and early twentieth centuries, Indians participated in segregation and the institutionalization of race in an attempt to ensure two things: that whites would recognize their “Indianness” and that Indians would retain control of their own institutions. The creation of Indian schools became a main part of the fight for recognition. Indians recognized the game of race and addressed it by consistently trying to move it to an arena where they had power. Picking and choosing tribal names and pursuing federal and state recognition of those names became one way of dealing with this problem. Throughout the twentieth century, the name of the Robeson County Indians changed from “Croatan” to “Cherokee Indians of Robeson County” to “Siouan Indians of the Lumbee River”. The name changes frequently led to conflict within and outside the community. Supporters of Cherokee or Siouan names pursued different paths to recognition. Robeson County Indians had to navigate standards of authenticity set forth by the federal government, such as blood-quantum provisions. Even after some Indians were finally granted official recognition, they were often still denied their full benefits from the government.

Study on Placement of U Tendons in Box-Section Pylon of Cable-Stayed Bridge

2011 ◽  
Vol 255-260 ◽  
pp. 901-905
Author(s):  
Hong Yuan Tang ◽  
Shao Ping Meng
Keyword(s):  
Stress Distribution ◽  
Box Section ◽  
Cable Stayed Bridge ◽  
Attenuation Ratio

Through the analysis of the stress distribution in anchorage zone of bridge pylon with different placements of tendon, the placement with the equal coefficient of anti-crack in both sides is proposed. At the same time, several models whose outsides are crossed by tendons at different angles are analyzed. Compared the corresponding cracking loads and cracking place of them, a reasonable angle range is obtained. At last, the vertical attenuation ratio of the prestressing in the anchorage zone under the tendon is analyzed to give the appropriate distance between the adjacent tendons.

Traditional ornaments of Świdermajers’ style windows in the town of Otwock

2019 ◽  
Vol 107 ◽  
pp. 84-103
Author(s):  
MARTA DWORNIK ◽  
ANNA ROŻAŃSKA ◽  
PIOTR BEER
Keyword(s):  
Main Part ◽  
Decorative Motifs ◽  
The Town

The paper provides an analysis of windows in antique Świdermajers’ style wooden buildings, located in Otwock. It has been discovered that many of them have been already replaced with new ones. Attention was paid to the traditional Polish casement window structure with transom and the main part below, additionally divided into smaller areas by wooden horizontal or vertical muntins. Analysis of traditional window carpentry elements such as shutters, window sills, cornices and batten frames was made together with their classification based on different kinds of decorative motifs.

CFD practical application in conceptual design of a 425 m cable-stayed bridge

2010 ◽  
Vol 13 (4) ◽  
pp. 309-326 ◽  
Author(s):  
F. Nieto ◽  
S. Hernandez ◽  
J.A. Jurado ◽  
A. Baldomir
Keyword(s):  
Conceptual Design ◽  
Practical Application ◽  
Cable Stayed Bridge

scholarly journals Demand for recycling filament in 3D printing

2020 ◽  
Vol 10 (2) ◽  
pp. 65-72
Author(s):  
Barbara Kmetz ◽  
Ágnes Takács
Keyword(s):  
3D Printing ◽  
Open Source ◽  
Conceptual Design ◽  
Main Part ◽  
Recent Past ◽  
History Of ◽  
Extrusion Technology

In the study the brief history of 3D printing is written, how the recent past and present is changing the open source movement. The FDM extrusion technology is reviewed in the text, also the areas where the technology can be used. There is a detailed description about the Creality Ender 5 printer and its printed objects. The study’s next main part contains the conceptual design of a filament recycling machine. After the needed market and patent research the functions are established, concepts of the machine are determined. These were evaluated and an optimal sketch was chosen as a result.

scholarly journals THE BEACH EROSION BOARD

2010 ◽  
Vol 1 (1) ◽  
pp. 12
Author(s):  
Dabney O. Elliott
Keyword(s):  
United States ◽  
Federal Government ◽  
The United States ◽  
Coastal Engineering ◽  
The State ◽  
Beach Erosion ◽  
Corps Of Engineers ◽  
Navigation Channel ◽  
Indian River ◽  
Local Agencies

The purpose of this paper is to describe the methods by which, and the extent to which the Federal Government participates with local agencies in the control of beach erosion. The Beach Erosion Board of the Corps of Engineers is the instrumentality through which this participation is affected. However, before describing this Board, it is necessary to sketch very briefly the background of the beach erosion problem as viewed from the national standpoint. The necessity for the control of beach erosion by one means or another has no doubt been recognized from the beginning of the practice of coastal engineering in the United States. The early technical records of the Corps of Engineers contain numerous references to the mutual effects which navigation structures and the adjacent shorelines exert upon each other. As an example, chosen at random, I may mention the construction in 1874 of twelve stone groins along the shore of the State of Connecticut between Welshs Point and Indian River, and of a stone jetty at the mouth of that river in the following year, to stabilize the shoreline and to prevent the movement of sand into the navigation channel of that river.

Adapting the Simple Through Girder to Sit in Nature, The Wupperthal Footbridge

2021 ◽  
Author(s):  
John Anderson ◽  
Warrick de Kock
Keyword(s):  
South Africa ◽  
Finite Element ◽  
Cross Section ◽  
Cross Sections ◽  
Three Dimensional ◽  
Cad Model ◽  
Tourist Destination ◽  
Box Section ◽  
The Town ◽  
Elegant Form

<p>Some places are hard to get to and Wupperthal, a small town nestled deep within in the Cederberg Mountains, in South Africa is one of those places. Founded by German missionaries in 1830 the town is home to 1400 inhabitants and a growing tourist destination. An adjacent river, however, is a barrier during the wet seasons for farm children trying to reach the town’s school. A permanent footbridge was therefore recently commissioned to replace temporary structures that have proved dangerous. This paper tells the story of the single span through girder footbridge. Designed to sit as a comfortable object in its natural surroundings the new footbridge is both functional and attractive. The tapering steel plated cross section presents a profiled elevation that splits to create an arched opening at the midspan of the bridge. To create this elegant form the design had to prevent the buckling of the unbraced top chord of the girder. This was achieved through an iterative study of various cross sections and the transitioning of the plate girder into a box section over the opening. Developing a three-dimensional CAD model of the bridge helped engineers conceive the slender form. The model was then exported to create the finite element plated model and then developed into full workshop drawings. The bridge is considered simple but striking in its appearance and this paper aims to highlight that standard solutions can be transformed where appropriate within limited means.</p>

Railway lines of R.F.I. and Ferrotramviaria Crossing in Bari – “Adriatico” cable stayed bridge

2021 ◽  
Author(s):  
Pierangelo Pistoletti ◽  
Paolo Maestrelli ◽  
Simone Varni ◽  
Marco Sciarra ◽  
Andrea Danelon
Keyword(s):  
Cross Section ◽  
Cable Stayed Bridge ◽  
Total Length ◽  
Design Construction

<p>This paper presents design and launching of the railways crossing in Bari. The bridge is made up of ten straight spans, 50 + 50 + 50 + 50 + 45 + 112.5 + 112.5 + 66 + 38.8 + 51.2 m, for a total length of 626 m. The longest spans are a cable-stayed bridge with a 70 m high steel pylon, Y shaped, 60° rotated in respect to the deck axis. The deck, supported by 30 stays about every 15 m, has a cross section 25.5m wide, sub-divided in two carriageways of 8.5 m each, separated by a central median of 2.5 m in width. The height of the beam is equal to 2.5 m and the slab has a thickness of 30 cm. Design, construction and launching choices will be described below.</p>

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