Girder Grid Joints
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I Structural Protection Systems Girder Grid Joints MAURER SOHNE

Maurer Modular Expansion Joints MAURER Modular Expansion Joints Girder Grid Joint type D 560 MAURER Modular Expansion Joints comprise of steel centre beams arranged in the longitudinal direction of the joint with interposed strip seals. Due to individual gaps being restricted in width several strip seals must be employed in series to accommodate greater movements. Accordingly one or more centre beams are required between the edge beams, supported on cross bars movably arranged at one or both edges of the structural gap. MAURER Girder Grid Joints More than 1.000 km of MAURER Modular...

Design Principles and Main Components Technical approval and independent periodical inspection acc. to TL/TP-FÜ Designation Description Supporting Elements 1 Edge Beam Continuous in-house and field quality control, the use of high-grade materials and a quality assurance system in keeping with ISO 9001 and EN 29001 ensure the high standard of MAURER Girder Grid Joints. All design elements of MAURER expansion joints are engineered in high-quality materials. All synthetics used feature excellent resistance to aging, wear and the environment. Relaxation of the control and bearing elements is...

Load Transmission, Fatigue Strength, Riding Comfort and Traffic Safety Safe Load Transmission Vehicles travelling over the expan­ sion joint transmit vertical and horizontal loads to the centre beams. The section forces resulting from the eccentric wheel loads are transmitted to the support bars by means of the centre beam. This beam acts as a continuous girder. From there they are diverted into the edges of the structure via the supporting elements and control springs. Load transmission at the centre beam The edge beam is rigidly anchored in the structure. For fatigue reasons the traffic...

Designing an expansion joint is governed by the magnitude and direction of the main movement of the structure in the plane of the carriageway, this being determined in a girder grid joint by the number of expansion gaps and the arrangement of the support bars running parallel to this direction, whereas the edge and centre beams are located parallel to the edges of the structure. In addition to the normal antici­ ated p movements in the plane of the carriageway, a multitude of secondary movements can occur. E. g. rotations ϕz due to irregular increases in temperature, movements uy due to...

Concrete Bridge typical cross-section and plan view for anchorage in reinforced concrete Cross-section Plan view Anchoring in concrete structures is governed by the design data as tabulated beside. For steel structures our engineering offices formulate solutions tailored to individual requirements. Salient design features can be seen from the following figures: *) Due to static reasons the guide bar is partly positioned to the centre. The neccessary recess and thickness of the lower placed cantilever concrete (≥ 150 mm) must be observed. Steel Bridge Design alternatives for connection to...

Cross-section thru carriageway at support box Cross-section thru carriageway between support boxes Cross-section thru footway (alternative 1) Cross-section thru footway (alternative 2) Cross-section thru footway with cover plate Cross-section thru footway with strip seal 80 G without footway cover plate Cross-section thru footway guide unit (alternative 2) Cross-section thru footway guide unit (alternative 1)

Design and Product Data The total movement “u“ in the main direction of movement can be resolved into the two components ux and uy perpendicular and parallel to the direction of the joint respectively. Selecting the size of joint is governed by the component ux and the maximum permissible gap width. To assist dimensioning, the salient design data is listed in the table, whereby departures are possible within certain limits where space availability is restricted. All dimensions are nominal and will be determined according to project. These dimensions are measured at a right angle to the axis...

Resilient Control, Resilient and Prestressed Support Resilient Control MAURER Girder Grid Joints adapt continually to deformations in the structure. The control springs provided between the support bars ensure a uniform distribution of the total movement to the individual joint gaps. Steel stops are provided at the support bars to prevent an opening of the individual gap of more than 80 mm. The springs comprise mainly of closed-cell polyurethane, a material which has a proven record of success for spring elements exposed to dynamic and impact stresses. The high permissible deformation (up...

Watertight Connection, Installation, High Functional Reliability and Low Noise Emission Watertight Connection Deformation features of the strip seal Sealing elements can be replaced even when the individual gaps To protect the adjacent structural are ≥25 mm. The gap width can be parts from the penetration of dirt and enlarged by moving the centre aggressive surface water MAURER beams. This operation is carried out Girder Grid Joints feature watertight using special hydraulic equipment. strip seals to close the gap between The bulbous edge section of the sealthe individual steel beams...

Detail Features Watertight design of parapet Special kerb unit Horizontal bend and kerb units Connection of a modular joint to a single seal joint Intersection with rail of tram

Storebælt East Bridge, Denmark Bridge over the River Main, Nantenbach Vasco da Gama Bridge, Portugal Maurer Söhne head office Frankfurter Ring 193, D-80807 Munich/Germany P.O. Box 44 01 45, 80750 Munich/Germany phone: +49 89 32394–0 fax: +49 89 32394–338 ba@maurer-soehne.de www.maurer-soehne.com Oberbaum Bridge, Berlin Maurer Söhne branch office Zum Holzplatz 2, 44536 Lünen/Germany P.O. Box 63 40, 44520 Lünen/Germany phone: +49 231 43401–0 fax: +49 231 43401–11 info@nd.maurer-soehne.de Maurer Söhne subsidiary Kamenzer Str. 52, 02884 Bernsdorf/Germany P.O. Box 55, 02994 Bernsdorf/Germany...