Boost your Grades with us today!

A cable-stayed pedestrian bridge is to be designed across a river, The span of the bridge is 70m…

A cable-stayed pedestrian bridge is to be designed across a river (see the attachedfigures for technical details). The span of the bridge is 70m and the available deckwidth is 4m. The concrete deck consists of 5 precast segments of 14m in length,prestressed together for continuity. Free height above the flood flow is 0.7m. The deckis made of reinforced concrete and prestress is applied where necessary (partiallyprestressed). (Also prestressing forces are applied on to the deck by the stay cableforces).The pylon is kept vertical under the action of dead load. The deck is kept horizontal byprestressing so that the deck is horizontal when there is no tension in the stay cables.(i) For the section(s) provided, calculate the second moment of area and theposition of the centroidal axis at critical sections.(ii) Design the section as a reinforced concrete deck or reinforced concrete withsome prestressing where appropriate considering the support positions ofthe cables and the position of the pylon. You may use the given amount ofreinforcement and prestressing tendons as a guide – Note that in the givendiagrams, mild steel round bars are used as reinforcement whereas yourdesign should use high yield steel as reinforcement.(iii) Calculate the design tensile forces in the cables under static loads(Dynamics effects need not be considered).(iv) Find the Maximum axial load and lateral load on the pylon due to cabletensions.

Looking for a Similar Assignment? Our Experts can help. Use the coupon code SAVE30 to get your first order at 30% off!