Abstract
Stressed ribbon pedestrian bridges are most graceful, efficient and economical strains of suspension bridges. However, these structures have a major disadvantage – very large horizontal support reactions, which result mainly to the construction cost. In order to discover new forms and to extend the limits of stressed ribbon bridges, in the end of twentieth century these constructions were started to combine with other bearing elements in cablestayed, underdeck cablestayed bridges and other structures. At the beginning of the twentyfirst century stressed ribbon supported on arch structure was discovered. The paper presents reviews of suspension supported on arch footbridges and classification. Considered the main geometrical design parameters and their interdependence. The paper presents a method of how to balance selfanchored suspension supported on arch bridge design computational scheme.
Highlights
in the end of twentieth century these constructions were started to combine with other bearing elements in cable-stayed
At the beginning of the twenty-first century stressed ribbon supported on arch structure was discovered
The paper presents reviews of suspension supported on arch footbridges and classification
Summary
Straipsnyje pateikiama kombinuotųjų kabamųjų vienajuosčių pėsčiųjų tiltų, paremtų arka, apžvalga ir klasifikavimas. Tačiau kabamosios vienajuostės konstrukcijos turi esminį trūkumą – į pamatus perduoda ypač dideles horizontaliąsias atramines reakcijas, kurios dažniausiai lemia šių konstrukcijų ekonomiškumą (Schlaich et al 2005; Kulbach 2007; Karieta 2010; Juozapaitis et al 2012). Bendruoju atveju kombinuotųjų kabamųjų – arkinių tiltų skaičiuojamoji schema gali būti atskirų pamatų ir sujungtų pamatų (1 pav.). Atskirų pamatų konstrukcijos gali būti pritaikytos slėniuose, tarpekliuose, giliose upių vagose arba iškasose, kai sujungti arkos ir kabamosios dalies pamatus yra neracio nalu (1 pav., a).
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