摘要:
The bridge is constructed of one inner tube (2) and an outer tube (1) surrounding the inner tube (2). The inner and outer tube (1, 2) are joined to each other by connecting pipes (3 - 13) welded to the outer surface of the inner tube (2) and to the inner surface of the outer tube (1) so that the inner tube (2) and the outer tube (1) are connected to each other through said connecting pipes (3 - 13) whereby a rigid composite structure is formed. The tubes and pipes are preferably laser welded to each other, preferably by a continuous seam.
摘要:
The invention relates to a multipurpose route consisting of vertical supporting pillars and horizontal route sections which are adjacently arranged on the supporting pillars, a plurality of route sections forming at least one superimposed track or bearing surfaces for lines, and comprising a continuous cavity inside over the entire length of the multipurpose route. The supporting pillars and/or the route sections consist of laminated wood, and the longitudinal surfaces of the individual route sections are trapezoidal. The route sections are alternately arranged in relation to each other such that the oblique front sides thereof lie against each other respectively with the essential part of the surface thereof in a non-positive or positive manner.
摘要:
The invention relates to the method and installation for building highways. The aim of the invention is to extend operational capabilities of a mobile installation for building a highway in space-limited environment without reducing the traffic intensity, and to build the highway above an existing main traffic artery. The inventive method consists in building the highway in the form of an elevated road passing at least by the part thereof over an existing motor road and is characterised in that a portal-type mobile installation, preferably self-propelled is used. The movable legs of said installation are disposed within the land allocation of the existing motor road.
摘要:
A collapsible beam element is provided, including: (a) an elongated flexible structural member having a predetermined cross section; and (b) a hollow defined by the cross section of the flexible structural member, wherein the flexible structural member is collapsible so as to enable folding of the beam element from an open configuration into a packed configuration, and wherein the flexible structural member readopts the predetermined cross section when unfolding the beam element from a packed configuration into an open configuration. The beam element is preferably made of material having predetermined shape. The beam element may be used so as to construct any collapsible three dimensional construction. Amongst other possibilities, the beam element may be used as a stretcher beam or a ladder or bridge beam.
摘要:
An elongate structural member comprising a structural outer shell (1,3,5,6) and at least one arcuate reinforcing member (4) within, for use in structural, semi-structural or cladding applications to carry floor loading, walkway loading, wheeled loading, pressure loading in buildings, bridges and other loading carrying applications.
摘要:
There are a large number of sites in the world's oceans and rivers that can provide a significant, viable, and cost effective source of renewable energy. Many are strategically located close to populated areas where these sites can be used to harness energy using ecologically benign hydrodynamic technology. A hydrodynamic array comprises multiple hydrodynamic elements for producing electricity by the motion of ocean tides or river currents and forces acting on the hydrodynamic array, which is immersed in ocean tides or river currents and which is in motion relative to the ocean tides or river currents.
摘要:
An ice composite body (10) has an inner ice core (11) and a protective outer armour shell (12). The outer armour shell (12) consists of a base section (13), side sections (14) and a separate top section (15), which is free to move vertically between the side sections (14). The inner ice core (11) is maintained in a frozen condition in use by refrigeration pipes (21), which are located at various levels therethrough. The inner ice core (11) is built up from thin layers of ice which are frozen one after the other. Following the freezing of each layer of ice the layer is rolled using a roller apparatus which provides a roller pressure in the range of 3.5 to 8 Newtons/mm2. The ice composite body (10) can be used in warm or cool waters for applications such as bridges, breakwaters, causeways, pontoons, artificial islands, dams, tidal barrages, wave power barrages, harbour walls, wind power farms or aircraft runways.