Cross section
View 1: Elev. Left. Z Up, Y Left. Cross section dimensions input of the curved deck (RH, RV).
The cross section is designed one-sided slope 2.5% on top of deck as the curved alignment RH 500m. There is a contra slope 11% of 540mm on top of deck at the right edgebeam. The bottom of deck is horizontal. Set first input RH=RV=0 to easy design points of the cross section. There can be as many points as needed to define the cross section, here 19 points for the solid profile (red) and 7 points for the void profile (blue).
Horizontal Tangent Alignment
View 2: Floor Plan. Horizontal tangent alignment. In the above top view the center curved deck (RH, RV) = (500, 600)m has been created. From the curved alignment (left) drag a horizontal tangent (X, Y)=(35, 2.456)m where Y=2.456m is the input of 1^{st} point of the tangent deck as shown in input below. Create the tangent deck.
View 3: Floor Plan. Rectilinear tangent deck.
Vertical Tangent Alignment View 4: Elev. Back Vertical. Vertical tangent deck (top) and input (bottom). In the vertical view above undo the just created tangent deck. Drag a vertical tangent (X, Z)=(35, 2.045)m from which the input vertical slopeZ 2.045/35=5.843% found (1a+1b). Create the tangent deck again, we found MoveZ 2.045m needed (2a+2b). slopeZ and MoveZ are the two inputs needed in Excel file. Create the tangent deck again as shown below in 3D view.
View 5: 3D. Tangent deck and curved deck.
Mirror-copied the right tangent deck Assume the bridge deck is symmetric, go to family file Floor Plan view, make a mirror copy of the left to the right tangent deck through the center line X=70m, as shown in Floor Plan and 3D views below.
View 6: Floor Plan & 3D. Tangent deck, curved deck and tangent deck. |