摘要:
The invention relates to a method for producing a concrete tube (12) for a hyperloop passenger transport system. The concrete tube (12) is concreted in situ by means of a formwork device (10). The formwork device (10) has a formwork carriage (34) which moves forwards during concreting. The formwork carriage (34) has an inner form (20) and an outer form (22) for shuttering the concrete tube (12). An interspace (24) between the inner form (20) and outer form (22) is filled, in particular continuously, with concrete (32). The solidified concrete tube (12) can be supported on pillars (58a, 58b) via bearings. The freshly solidified portion of the concrete tube (12) is preferably supported on the inside by inner rollers (52a, 52b) and on the outside by outer rollers (54a). In order to support the formwork carriage (34) on the pillars (58a, 58b), the formwork device (10) can have supporting rollers (56a, 56b). The invention further relates to the formwork device (10) for implementing the method and to the concrete tube (12) produced by the method for the hyperloop passenger transport system
摘要:
A sealing plug has an elastic sleeve of thimble-like basic shape. A wound-up band of the sealing plug is inserted in the sleeve. The number of windings or turns of the band can be reduced by rotating the inner end of the band, wherein the outside diameter of the band, and hence the outside diameter of the elastic sleeve, widens. The band can be inserted in pretensioned state into the sleeve and can slacken after insertion into an anchor hole. The band can be expanded in the anchor hole beyond the slackened state of the band. The sealing plug further has a latching mechanism, which prevents back-rotation of the expanded sleeve. The sealing plug enables a radial expansion, and hence a sealing of anchor holes of different diameter, without shortening of the axial sealing surface of the sleeve.
摘要:
The invention relates to a scaffolding arrangement with a scaffolding assembled from individual scaffolding components for internal construction or maintenance work within a coker drum standing upright on the ground and which has a lower end portion with a cross-section which tapers in the direction of the longitudinal axis of the drum towards a closable opening at the lower end of the coker drum, the scaffolding comprising: a support section with several support posts each having a lower and an upper end, the support posts, with their lower ends being supported outside of the coker drum on the ground and each of them, through the opening provided on the lower end of the coker, extending in a vertical direction into the coker drum, wherein the support section comprises several support posts spaced from one another, a support frame comprising a plurality of support beams which are detachably connected to one another, the support frame being attached to and supported by said support section, a first working platform which is arranged on top of the support frame, the first working platform being preferably located within the tapered lower end portion of the coker drum; and a scaffold tower section having one or more further working platforms which is/are each arranged in an axial direction above the first working platform inside the coker drum. The vertical loads of the scaffolding as a whole, are solely transferred to the ground via the said support section of the scaffolding, which is fully self-supported. The invention further relates to a scaffolding for an aforesaid scaffolding arrangement (FIG. 1)
摘要:
A method for manufacturing a formwork element 10 for concrete structures, uses a formwork element having a base body 12 of hollow profile construction with an outer side 14 designed as a form lining. The base body 12 is formed by at least two interlocking sub-segments which are permanently connected to one another at their interlocking edge areas. The sub-segments, such as edge segment and intermediate segment 16, 18, which are advantageously produced through extrusion, are hooked to one another to form an inseparable unit in the connected state.
摘要:
A method is proposed for constructing multi-story concrete structures using a rail-guided self-climbing formwork system. A climbing rail is thereby displaced in a vertical direction within lower and upper climbing shoes and a lower extension piece is positioned to extend vertically in a downward direction below a lower end of the climbing rail. The lower extension piece has a length which is less than the length of the climbing rail. The climbing rail is then displaced in the vertical direction until the lower extension piece is captured within the lower climbing shoe. The method simplifies construction of the lower stories of concrete structures.
摘要:
A panel formwork T-shaped arrangement has panel formwork elements 61, 62 directly bordering an intermediate panel formwork compensation element 53. The associated formlinings 61a, 53a, 62a are in one plane. These formlinings 61a, 53a, 62a delimit on one side the continuous wall 84 of the T-shaped intersection to be produced. The three components 61, 53, 62 are engaged from behind by a crossbar 85 for mechanical stabilization. The two formlinings 55a, 57a delimit on both sides the abutting wall 86 of the T-shaped intersection to be produced. The lateral outer edges 12 and 17 of the inner limb 56 and the panel formwork element 61 are aligned with respect to each other at the edge plane R. The outer edges 78 and 81 of the inner limb 58 and the panel formwork element 62 are also aligned with respect to each other at the edge plane R′.
摘要:
The invention relates to a ceiling formwork system comprising several formwork elements, the bottom face of which is provided with supports that can be coupled to heads of vertical props. At least some areas of the cross section of said supports are embodied in a C-shaped manner, with two legs extending from a basic section. One of the legs is designed as a supporting surface that is to rest on a head of a vertical prop while the head of a vertical prop is provided with fixing elements which engage into one respective recess of a supporting surface. Said recess is configured so as to selectively couple the support to the vertical prop in two directions that are offset relative to each other by 90° at the end of the supporting surface which faces away from the basic section.
摘要:
A locking device (20,21) for an anchor rod (2) of an anchor system of a concrete wall form, has a screw nut element for screwing the anchor rod through a screw thread of the screw nut element. A dome plate can be fastened to a back of a form element (5,6) of the concrete wall form by means of fastening elements (30) and has a spherically shaped plate section with an opening in which the screw nut element is arranged so as to have radial play. The screw nut element has a groove-type radial seat which accommodates the edges of the opening in the spherical plate sections.
摘要:
A turnbuckle device (12, 13, 14; 20; 35a, 35b, 35c; 44a, 44b, 44c) for clamping concrete shell elements (1, 2), having two claws (15a, 15b, 15c, 16a, 16b, 16c; 21, 22) and a wedge (17a, 17b, 17c; 23; 37a, 37b, 37c; 46a, 46b, 46c), the claws being displaceable toward one another in a clamping direction (34), the wedge being guided in the clamping device along a wedge guiding direction (33), and the scale of the propulsion of the wedge in the turnbuckle device determining the displacement of the claws, is characterized in that the wedge guiding direction and the clamping direction enclose an angle less than 90°. Mutual obstruction of the turnbuckle devices neighboring wedges is thus avoided.
摘要:
A girder element (1; 21; 31; 41; 53-57) for concrete formwork comprises a girder (4) for receiving external forces (10), a tension rod (5) extending behind the girder (4) and at least one lengthwise adjustable tensioning device that is interposed between the girder (4) and the tie rod (5), the local distance between the girder (4) and the tie rod (5) being adjustable by means of said tensioning device. The invention is characterized in that the lengthwise adjustable tensioning device is configured as a lengthwise adjustable compensation device (6; 6a, 6b) which is motor driven to adjust the length of the compensation device (6; 6a, 6b). A measuring device is used to determine the position (x) of the girder (4) in the area of the compensation device (6; 6a, 6b) relative to a desired position (xs). A control device (12) is used to adjust the length (L) of the compensation device (6; 6a, 6b) depending on the position (x) of the girder (4). The girder element permits precise and cost-effective manufacture of any concrete structures.