PSC Box

DimensionThe dimensions of a PSC Box are assigned. The boundary lines of the PSC Box are drawn according to the assigned dimensions.PSC Box template support two types. Solid type and Hollow type are supported.
Solid Type
Hollow Type

BearingThe positions and dimensions of bearing plates are assigned.  The information can be altered in the ASSIGN-Bearing Plates after clicking the strut-tie model node framed by the bearing plate.


LoadThe shear force and torsion are assigned. After assigning the load names, they can be altered, added, or deleted in the DEFINE-Static Load.The positive values for shear force loads must be assigned. The positive torsion load is set to clockwise.


STM settingTwo reference distances A and B are assigned for the automatic construction of a strut-tie model for PSC Box (only Hollow type).

RebarThe areas of reinforcing bars assigned to the PSC BOx below are recognized as the areas of steel ties of the strut-tie model for PSC Box.The information on the reinforcing bars can be altered, added, or deleted in the DEFINE-Tie Types-Reinforcement Ties.The information can be assigned to the elements of the strut-tie model in the ASSIGN-Tie Types.

Continuous Deep Beam

DimensionThe dimensions of a Continuous Deep Beam are assigned. The boundary lines of the Continuous Deep Beam are drawn according to the assigned dimensions.  


BearingThe information on the bearing plates are assigned here. The information can be altered in the ASSIGN-Bearing Plates after clicking the strut-tie model node framed by the bearing plate.


LoadThe vertical loads acting on bearing plates are assigned. After assigning the load name, it can be altered, added, or deleted in the DEFINE-Static Load. The positive loads that act to the directions shown in the figure must be assigned.


STM settingTwo reference distances are assigned for the automatic construction of the strut-tie model for the Continuous Deep Beam.


RebarThe areas of reinforcing bars assigned to the Continuous Deep Beam are recognized as the steel tie areas of the strut-tie model for Continuous Deep Beam. The information on the reinforcing bars can be altered, added, or deleted in the DEFINE-Tie Types-Reinforcement Ties. The information can be assigned to the elements of the strut-tie model in the ASSIGN-Tie Types.

Beam-Column Joint

DimensionThe dimensions of a Beam-Column Joint are assigned. The boundary lines of the  Beam-Column Joint are drawn according to the assigned dimensions.Beam-Column Joint template support two types. Interior type and exterior type are supported.
Interior Beam-Column Joint
Exterior Beam-Column Joint

LoadSupports moments and shear forces of columns and beams.The direction of the moment is based on the beam, CW means clockwise and CCW means counterclockwise.Shear force is set based on moment direction. Moment and shear force should be input positive value.
Interior Beam-Column Joint
Exterior Beam-Column Joint

STM settingFour reference distances A, B, C and D are assigned for the automatic construction of a strut-tie model for Beam-Column Joint.


RebarThe areas of the reinforcing bars assigned to the Beam-Column Joint below are recognized as the steel tie areas of the strut-tie model for a Beam-Column Joint. The information on the reinforcing bars can be altered, added, or deleted in the DEFINE-Tie Types-Reinforcement Ties. The information can be assigned to the elements of the strut-tie model in the ASSIGN-Tie Types.

Girder

DimensionThe dimensions of a girder and information on the supporting columns (circular, square, rectangle) are assigned. The boundary lines of the girder zone are drawn according to the assigned dimensions. The symbol T is the thickness of the beam.


LoadThe information on the distributed load is assigned. The load name and load combination can be altered, added, or deleted in the DEFINE-Static Load and DEFINE-Load Combinations, respectively. Presently, the program allows only two load types and one load combination.


STM settingTwo reference distances are assigned for the automatic construction of the strut-tie model for the girder.


RebarThe areas of reinforcing bars assigned to the girder are recognized as the steel tie areas of the strut-tie model for girder. The information on the reinforcing bars can be altered, added, or deleted in the DEFINE-Tie Types-Reinforcement Ties. The information can be assigned to the elements of the strut-tie model in the ASSIGN-Tie Types.

Deep Beam with Concentrated Loads

DimensionThe dimensions of a deep beam are assigned. The boundary lines of the deep beam are drawn according to the assigned dimensions. The symbol T is the thickness of the beam.


BearingThe information on the bearing plates are assigned here. The information can be altered in the ASSIGN-Bearing Plates after clicking the strut-tie model node framed by the bearing plate.


LoadThe vertical loads acting on bearing plates are assigned. After assigning the load name, it can be altered, added, or deleted in the DEFINE-Static Load. The positive loads that act to the directions shown in the figure must be assigned.


STM settingTwo reference distances are assigned for the automatic construction of the strut-tie model for the deep beam.


RebarThe areas of reinforcing bars assigned to the deep beam are recognized as the steel tie areas of the strut-tie model for deep beam. The information on the reinforcing bars can be altered, added, or deleted in the DEFINE-Tie Types-Reinforcement Ties. The information can be assigned to the elements of the strut-tie model in the ASSIGN-Tie Types.

Anchorage Zone with Straight Tendons

DimensionThe dimensions of an anchorage zone with straight tendon(s) and the information on a bearing plate are assigned. The boundary lines of the anchorage zone are drawn according to the assigned dimensions. The direction Left indicates that the forces by prestressing tendons act from left to right. The symbol T is the thickness of the zone.



LoadThe jacking force is assigned. The jacking force must be positive value.


STM settingFour reference distances A, B, C, and D are assigned for the automatic construction of the strut-tie model for the anchorage zone.



RebarThe areas of reinforcing bars assigned to the anchorage zone with straight tendons are recognized as the steel tie areas of the strut-tie model for the anchorage zone. The information on the reinforcing bars can be altered, added, or deleted in the DEFINE-Tie Types-Reinforcement Ties. The information can be assigned to the elements of the strut-tie model in the ASSIGN-Tie Types.

Anchorage Zone with Inclined Tendons

DimensionThe dimensions of a PSC beam anchorage zone with inclined tendons, number of strands, and strand locations are assigned. The boundary lines and tendon layouts are drawn according to the assigned dimensions. The direction Right indicates that the compressive forces of prestressing tendons act from left to right. Two types of strut-tie models are generated: a model constructed by considering the slope of tendons and a model constructed by considering the compressive stress flows. The number of strands is limited to 20. The symbol T is the thickness of the zone.


LoadThe jacking angle and forces are assigned. The positive values for the jacking forces must be assigned.



STM settingThree reference distances A, B, and C are assigned for the automatic construction of the strut-tie model for the anchorage zone with inclined tendons.
STM Construction by Considering Tendon Slope


STM Construction by Considering Stress Flows

RebarThe areas of reinforcing bars assigned to the anchorage zone are recognized as the steel tie areas of the strut-tie model for the anchorage zone. The information on the reinforcing bars can be altered, added, or deleted in the DEFINE-Tie Types-Reinforcement Ties. The information can be assigned to the elements of the strut-tie model in the ASSIGN-Tie Types.

Frame Corner

DimensionThe dimensions of four types of frame corners (Upper Left, Upper Right, Lower Left, Lower Right) subjected to opening or closing moments are assigned. The boundary lines of a frame corner are drawn according to the assigned dimensions. The loads and the areas of reinforcing bars must be converted to those of the frame corner with 1 meter thickness since the thickness of the frame corner is assumed to be 1 meter.




LoadThe opening moments or closing moments are assigned. After assigning the load name, it can be altered, added, or deleted in the DEFINE-Static Load. The positive moment that acts to the directions shown in the figure must be assigned.



STM settingDifferent information according to the types of frame corners and moments is assigned for the automatic construction of the strut-tie model for frame corner. The assigned moments are converted to the distributed or concentrated forces at their corresponding sections for plane solid analysis. In the strut-tie model analysis, the moments are converted to the concentrated forces. Four types of strut-tie models under closing and opening moments on two upper left frame corners are shown below
Closing Moment Type 1

Closing Moment Type 2Four reference distances and a truss angle are assigned for the automatic construction of the strut-tie model for the frame corner subjected to two closing moments.


Opening Moment Type1Four reference distances are assigned for the automatic construction of the strut-tie model for the frame corner subjected to two opening moments.


Opening Moment Type 2Four reference distances and one distance ratio are assigned for the automatic construction of the strut-tie model for the frame corner subjected to two opening moments.


RebarThe areas of reinforcing bars assigned to the frame corners are recognized as the steel tie areas of the strut-tie models for the frame corners. The information on the reinforcing bars can be altered, added, or deleted in the DEFINE-Tie Types-Reinforcement Ties. The information can be assigned to the elements of the strut-tie model in the ASSIGN-Tie Types.
Closing Moment Type 1


Closing Moment Type 2


Opening Moment Type 1


Opening Moment Type 2

Pier Footing

DimensionThe dimensions of a pier footing are assigned. The boundary lines of the pier footing are drawn according to the assigned dimensions. The symbols T and EA are the thickness of the pier footing and the number of columns. The symbols LD1, LD2, and LD3 are the center-to-center distances of two columns in the pier coping supported by two, three, and four columns, respectively.


FoundationThe type of pier footing, coefficients of soil or pile reaction per unit area, and number of piles in two horizontal directions are assigned. Two foundation types (Spread Footing, Pile Footing) are provided.



LoadThe loads from column(s) are assigned. After assigning the load names, they can be altered, added, or deleted in the DEFINE-Static Load. The positive values for vertical loads must be assigned. The positive horizontal loads are set as the forces acting from left to right. The negative horizontal loads are set as the forces acting from right to left. The positive and negative moments are set as the clockwise and counterclockwise moments, respectively.



STM settingThe number of nodes under column, three reference distances B, C, and D, and the slope of inclined element are assigned for the automatic construction of the strut-tie model for pier footing.


RebarThe areas of reinforcing bars assigned to the pier footing below are recognized as the areas of the steel ties of the strut-tie model for pier footing. The information on the reinforcing bars can be altered, added, or deleted in the DEFINE-Tie Types-Reinforcement Ties. The information can be assigned to the elements of the strut-tie model in the ASSIGN-Tie Types.

Pier Coping

DimensionThe dimensions of a pier coping are assigned. The boundary lines of the pier coping are drawn according to the assigned dimensions. The symbols T and EA are the thickness of the pier coping and the number of columns. The symbols LD1, LD2, and LD3 are the center-to-center distances of two columns in the pier coping supported by two, three, and four columns, respectively.


BearingThe positions and dimensions of bearing plates are assigned. The notation Dist is the distance between a load point and left edge of the pier coping.


LoadThe dead and live loads are assigned. After assigning the load names, they can be altered, added, or deleted in the DEFINE-Static Load. The positive values for vertical loads must be assigned. The positive horizontal loads are set as the forces acting from left to right. The negative horizontal loads are set as the forces acting from right to left.


STM settingThe number of nodes at column, three reference distances B, C, and D are assigned for the automatic construction of a strut-tie model for pier coping. Two nodes between two outside load points at the top and bottom of the coping can be generated.


RebarThe areas of reinforcing bars assigned to the pier coping below are recognized as the areas of steel ties of the strut-tie model for pier coping. The information on the reinforcing bars can be altered, added, or deleted in the DEFINE-Tie Types-Reinforcement Ties. The information can be assigned to the elements of the strut-tie model in the ASSIGN-Tie Types.