{"id":12442,"date":"2019-05-13T13:54:15","date_gmt":"2019-05-13T13:54:15","guid":{"rendered":"https:\/\/teixeiraduarteconstrucao.com\/projetos\/ponte-25-abril\/"},"modified":"2019-08-21T15:57:10","modified_gmt":"2019-08-21T15:57:10","slug":"tagus-river-bridge-25th-april","status":"publish","type":"tm_portfolio","link":"https:\/\/teixeiraduarteconstrucao.com\/en\/projects\/tagus-river-bridge-25th-april\/","title":{"rendered":"Tagus River Bridge (25th April)"},"content":{"rendered":"<h1><span class=\"fontstyle0\">TAGUS RIVER BRIDGE (25TH APRIL)<\/span><\/h1>\n<p><strong>Client<\/strong>: <span class=\"fontstyle0\">GECAF &#8211; Gabinete de Gest\u00e3o das Obras de Instala\u00e7\u00e3o do Caminho de Ferro na Ponte sobre o Tejo em Lisboa<\/span><br \/>\n<strong>Location<\/strong>: <span class=\"fontstyle0\">Lisboa &#8211; Portugal<\/span><br \/>\n<strong>Conclusion Year<\/strong>: 1999<\/p>\n<p>&nbsp;<\/p>\n<p>This work was characterized by the following activities:<\/p>\n<ul>\n<li><span class=\"fontstyle0\">Structural reinforcement of the bridge including installation of two secondary suspension cables parallel to, and some 3.5m above, existing ones, reinforcing the stress-beams and construction of new exterior anchorage points alongside existing ones on Av. India and on the Tagus river southern embankment.<br \/>\n<\/span><\/li>\n<li><span class=\"fontstyle0\">Construction of the twin track railway deck inside the stress beams and respective catenaries as well as all signalling and control systems.<br \/>\n<\/span><\/li>\n<li><span class=\"fontstyle0\">Widening of the road deck to six lanes.<br \/>\n<\/span><\/li>\n<li><span class=\"fontstyle0\">General improvements to the existing structure including stripping and total repainting.<br \/>\n<\/span><\/li>\n<li><span class=\"fontstyle0\">Replacement of existing decorative, traffic and aircraft warning lights.<br \/>\n<\/span><\/li>\n<li><span class=\"fontstyle0\">Construction of rail deck under the Alc\u00e2ntara viaduct road deck to support the railway link.<br \/>\n<\/span><\/li>\n<li><span class=\"fontstyle0\">General improvement to the road deck on the Alc\u00e2ntara viaduct with removal of some oscillation joints and replacement of others.<br \/>\n<\/span><\/li>\n<\/ul>\n<p><strong>Relevant data:<\/strong><\/p>\n<p>Structural steel use on the bridge and Alc\u00e2ntara viaduct: 25 000 ton<br \/>\nExcavations for anchorages foundations: 85 000 m3<br \/>\nVolume of concrete: 85 000 m3<br \/>\nFoundations piling \u00d8 1,50 m: 3 600 m<br \/>\nTotal area painted: 600 000 m2<br \/>\nDead load of the existing bridge: 36 500 ton<br \/>\nAdditional dead load due the installation of the railway deck and the widening of the road deck:\u00a0 16 000 ton<br \/>\nHorizontal force bearing component installed on the secondary cable and transmitted to each new anchorage point: 49 900 kn<\/p>\n<div id='gallery-1' class='gallery galleryid-12442 gallery-columns-2 gallery-size-large'><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/teixeiraduarteconstrucao.com\/wp-content\/uploads\/2019\/05\/ponte-25-abril-11.jpg'><img decoding=\"async\" width=\"847\" height=\"672\" 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