Funktionale Anforderungen und strukturbedingtes Verhalten von Schleppplatten bei integralen Straßenbrücken/Functional requirements and structural behaviour the transition slabs of integral road bridgesPart 2: Technical exigencies of traffic and evaluation of serviceability of transition slabs

Bauingenieur ◽  
2015 ◽  
Vol 90 (10) ◽  
pp. 500-507
Author(s):  
Sven Martin ◽  
Günther Mahlo
Keyword(s):  
Functional Requirements ◽  
Structural Behaviour

Der Teil 2 schließt die Untersuchungen zum strukturellen Verhalten von Schleppplatten ab. Einleitend gilt die Aufmerksamkeit den Einflüssen, die allgemein die Gebrauchstauglichkeit von Straßen kennzeichnen. Dazu gehören die Befahrbarkeit, die Verkehrssicherheit und der Fahrkomfort. Grenzwerte lokaler Abweichungen in der Höhenlage der Fahrbahn und zulässige Winkelabweichungen im Falle eines Neigungswechsels in der Verkehrsfläche definieren diese verkehrstechnischen Anforderungen. Mithilfe numerischer Analysen wurden die Einflussparameter untersucht, die maßgeblich zu den Setzungen der Schleppplatten und damit zu den Setzungsmulden in der Fahrbahn führen. Die wichtigsten Faktoren sind neben den einwirkenden Belastungen insbesondere die Länge der Schleppplatten, die Steifigkeiten der Straßenbefestigung, der Hinterfüllung und der ungebundenen Schichten der Überbauung. Horizontale Verschiebungen infolge der Interaktionen mit dem Tragwerk verursachen zusätzliche Setzungsanteile. Letztendlich bestimmen die Gesamttiefen der Setzungsmulden die zulässige Länge der integralen Brücken. Diese Nachteile werden jedoch bei zwängungsfrei gelagerten Schleppplatten vermieden.

Funktionale Anforderungen und strukturbedingtes Verhalten von Schleppplatten bei integralen Straßenbrücken/Functional requirements and structural behaviour of transition slabs of integral road bridgesPart 1: Design characteristics and influences from the bridge structure on the behaviour of transition slabs

Bauingenieur ◽  
2015 ◽  
Vol 90 (09) ◽  
pp. 427-435
Author(s):  
Günther Mahlo ◽  
Sven Martin
Keyword(s):  
Bridge Structure ◽  
Functional Requirements ◽  
Structural Behaviour ◽  
Eine Analyse ◽  
Design Characteristics

Bei zwängungsfrei gelagerten Überbauten hatten die Schleppplatten in der jüngeren Vergangenheit ihre ursprüngliche Bedeutung weitestgehend eingebüßt. Sie bilden jedoch gegenwärtig bei den integralen Brücken eine unverzichtbare Komponente der Widerlager. Der erste Teil des Beitrages beinhaltet eine Analyse der strukturellen Konzeption von Schleppplatten. Beispiele ausgeführter Schleppplatten und Entwurfsregeln in verschiedenen Ländern erlauben jedoch nur Rückschlüsse auf die geometrischen Parameter. Aus diesem Grunde gilt die Aufmerksamkeit vor allem den Einwirkungen, die das Gebrauchsverhalten der Schleppplatten beeinflussen. Bei integralen Brücken bilden die zeitabhängigen und temperaturbedingten Tragwerksverformungen eine der Hauptursachen für das Auftreten von Setzungsmulden in der Fahrbahn. Vom Brückentragwerk und den Schleppplatten gehen dabei vielfältige Interaktionen mit dem Baugrund, der Widerlagerhinterfüllung und der Straßenbefestigung aus. In einem folgenden Teil 2 werden die daraus resultierenden Auswirkungen auf das Gebrauchsverhalten der Schleppplatten dargestellt.

scholarly journals Analysis of G+5 Storeys Building With and Without Floating Column

2021 ◽  
Vol 889 (1) ◽  
pp. 012008
Author(s):  
S K Singh ◽  
Sarv Priya ◽  
Mohd Nadeem ◽  
Md Badar Alam
Keyword(s):  
Structural Parameters ◽  
Horizontal Displacement ◽  
Rigid Base ◽  
Structural Elements ◽  
Functional Requirements ◽  
Structural Behaviour ◽  
Current Period ◽  
Rigid Frame ◽  
Earthquake Load ◽  
Shear Demand

Abstract In current period, several structures are being planned and built with structural complicatedness like building with floating columns on different floors and spaces. The buildings accompanying floating columns are extremely detrimental that is constructed in earthquake-prone regions. The current study analyses and compare the buildings with and without of floating column. The columns which are directly supported by a beam without any rigid base are known as floating columns. Various buildings have been constructed with floating columns in India. Typically, it is required to provide larger spacing between the columns to entertain the requirements of parking or reception lobbies. Some of the functional requirements of a building might be satisfied by providing the floating columns but the structural behaviour of the building changes abruptly. The beams that supported the floating columns require more flexure and shear demand than the surrounding beams. In addition, it leads to stiffness unevenness at a specific joint. Columns are the main structural elements that resist the lateral load in a rigid frame and have the importance in the performance of the building under earthquake load The storey’s stuffiness below the floating column is normally reduced. Therefore, an attempt has been made to analyse the performance of a G+5 storey building with and without floating columns and compare structural parameters such as horizontal displacement, storey drift and storey shear under seismic excitation using (ETABS) Software.

An Integrated Approach for a Knowledge-based Clinical Workstation: Architecture and Experience

1998 ◽  
Vol 37 (01) ◽  
pp. 16-25 ◽  
Author(s):  
P. Ringleb ◽  
T. Steiner ◽  
P. Knaup ◽  
W. Hacke ◽  
R. Haux ◽  
...  
Keyword(s):  
Decision Support ◽  
Information Systems ◽  
Patient Care ◽  
Hospital Information Systems ◽  
Medical Decision ◽  
Daily Routine ◽  
Functional Requirements ◽  
Support Functions ◽  
Knowledge Based ◽  
Clinical Workstation

Abstract:Today, the demand for medical decision support to improve the quality of patient care and to reduce costs in health services is generally recognized. Nevertheless, decision support is not yet established in daily routine within hospital information systems which often show a heterogeneous architecture but offer possibilities of interoperability. Currently, the integration of decision support functions into clinical workstations is the most promising way. Therefore, we first discuss aspects of integrating decision support into clinical workstations including clinical needs, integration of database and knowledge base, knowledge sharing and reuse and the role of standardized terminology. In addition, we draw up functional requirements to support the physician dealing with patient care, medical research and administrative tasks. As a consequence, we propose a general architecture of an integrated knowledge-based clinical workstation. Based on an example application we discuss our experiences concerning clinical applicability and relevance. We show that, although our approach promotes the integration of decision support into hospital information systems, the success of decision support depends above all on an adequate transformation of clinical needs.

Urban Development Strategies of City Centers: The Case of Rafah City, Palestinian Territories

2014 ◽  
Vol 8 (3) ◽  
pp. 195
Author(s):  
Omar S. Asfour ◽  
Samar Abu Ghali
Keyword(s):  
Urban Development ◽  
Gaza Strip ◽  
Geographic Location ◽  
Development Strategies ◽  
Functional Requirements ◽  
City Center ◽  
Palestinian Territories ◽  
The Gaza Strip ◽  
The City ◽  
Commercial Center

City centers worldwide are perceived as essential parts of the city, where city memories are preserved and its identity is expressed. They are planned to satisfy the functional requirements and pleasurable qualities of the city. Under the accelerating urbanization of the modern city, several challenges face these centers including demographic, economic, and environmental challenges. This requires a continuous and incremental urban development process based on clear strategy and action plans. Thus, this study focuses on urban development strategies of city centers, with a focus on Rafah city located in the Gaza Strip, Palestinian Territories. The geographic location of this city near the Palestinian-Egyptian borders makes it a promising commercial city at local and regional levels. Thus, the current situation of Rafah city center has been analyzed, and several development strategies have been proposed. This has been done through a field survey based on observation and a questionnaire directed to city center users. It has been found that there is a great potential of Rafah city center to be developed as a commercial center. In this regard, several strategies and required actions have been proposed in the fields of transportation, environmental quality, shopping activities, investment opportunities, and visual perception.

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