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Tunnel Structure (tunnel + structure)

Distribution by Scientific Domains

Chemistry	66%
Engineering	33%

Selected Abstracts

ChemInform Abstract: A New Intersecting Tunnel Structure in the AIMIII[PO3(OH)]2 Series for AI = Ag, MIII = In: Analysis of Structural Relationships.

CHEMINFORM, Issue 19 2009
Anne Guesdon
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]

ChemInform Abstract: A Sodium Gadolinium Phosphate with Two Different Types of Tunnel Structure: Synthesis, Crystal Structure, and Optical Properties of Na3GdP2O8.

CHEMINFORM, Issue 52 2008
M. Fang
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]

Unusual Mobility of Cesium via a Reversible Topotactic Dehydration Reaction in a New Hydroxygallophosphate with an Intersecting Tunnel Structure.

CHEMINFORM, Issue 34 2006
J. Lesage
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF. [source]

Handling of Excavated Material from the Koralm Tunnel in Styria

GEOMECHANICS AND TUNNELLING, Issue 4 2008
Peter Pichler
The Koralm Railway Line represents an essential section of the Pontebbana corridor between Graz and Klagenfurt. It creates new capacities and significantly improved conditions for the freight transportation. Furthermore, the travel time of the passenger traffic will be considerably reduced. The heart of the Koralm railway Line is the Koralm tunnel with a length of approximately 32.8 km. Right from the first steps of planning it became clear that there would be a demand for an economical and ecological handling of the excavated materials. So a specific programme was performed, which is presented in this paper. The experiences made will strongly influence the programme of construction and the detailed design of the future main tunnel structure. Umgang mit dem Ausbruchsmaterial des Koralmtunnels in der Steiermark Die Koralmbahn, welche zwischen Graz und Klagenfurt ein maßgebliches Teilstück im Rahmen des Pontebbana-Korridors darstellt, schafft neue Kapazitäten und deutlich verbesserte Voraussetzungen für den Bahngüterverkehr und wird die derzeitige Fahrzeit im Personenverkehr erheblich reduzieren. Der Koralmtunnel stellt mit einer Länge von rund 32,8 km das Kernstück der neuen Koralmbahn dar. Bereits seit den frühesten Planungsphasen wurde konsequent an einem Programm für den wirtschaftlichen und umweltfreundlichen Umgang mit den Tunnelausbruchsmaterialien gearbeitet. Die Erkenntnisse aus den bisherigen Untersuchungen sind im vorliegenden Artikel zusammengefasst. Diese Erkenntnisse fließen maßgeblich in die Bauablauf- und Detailplanungen des zukünftigen Haupttunnels ein. [source]

A disordered cerium(IV) phosphate with a tunnel structure, K4CeZr(PO4)4

ACTA CRYSTALLOGRAPHICA SECTION C, Issue 12 2006
Ivan V. Ogorodnyk
Tetrapotassium cerium(IV) zirconium tetrakis(monophosphate) crystallizes in the tetragonal system (space group I41/amd). A complex disorder in K4CeZr(PO4)4 involves the mixing of Ce and Zr atoms on a single site with m2 symmetry and the splitting of P- and O-atom positions, equivalent to a rotation of the phosphate groups, to yield eight- and sixfold coordination environments around Ce and Zr, respectively. The K atoms are located in tunnels running parallel to the a and b axes. [source]

Bemessung von Grundbauwerken aus Stahlbeton nach DIN 1054 (01.03)

BETON- UND STAHLBETONBAU, Issue 5 2004
Ludger Speier Dr.-Ing.
Abstract Abweichend von dem bisher gültigen Konzept der DIN 1054 (Ausgabe November 1976) bezieht sich der Geltungsbereich der Neufassung von Januar 2003 explizit auch auf die Standsicherheit und die Gebrauchstauglichkeit von Bauwerken und Bauteilen im Erd- und Grundbau. Da keine vollständige Übereinstimmung zur neuen Normengeneration besteht, insbesondere zu den Vorschriften zur Bemessung von Stahlbetontragwerken (DIN 1045-1, Teil 1-4, DIN 1055-100, DIN Fachberichte 100-104), existieren Interpretationsspielräume. Es werden die Grundzüge und Differenzen der beiden Konzepte vorgestellt und Anwendungsregeln gegeben. Bemessungsergebnisse bei der Anwendung der neuen Normengeneration am Beispiel eines Tunnelbauwerks in bergmännischer Bauweise werden mit den bisher gültigen Normen (DIN 1045 (07.88), DIN 1054 (11.76), ZTVTunnel Teil I) verglichen. Design of Foundation Construction made of Reinforced Concrete according to DIN 1054 (01.03) Other than the idea given in DIN 1054 (draft november 1976) the scope of the revised draft of january 2003 clearly also refers to the stability as well as the serviceability of construction and structural members concerning ground and foundation work. However, the design concepts proposed in this contribution, do not completely correspond to other regulations of the new "Generation of Standards", in particular to the rules for the design of concrete structural members (DIN 1045-1, part 1-4, DIN 1055-100, DIN Fachberichte 100-104). This leads to interpretation possibilities for the interface between both standards. In the following the main features and differences of both standards are introduced and application rules are proposed. Furthermore, the application of the new "Generation of Standards" is presented within the example of a tunnel structure in mining construction. These results are compared to the results according to the standards which have been valid so far (DIN 1045 (07.88), DIN 1054 (11.76), ZTV-Tunnel part I). [source]