Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
266 words
A bridge for skewed orientation with respect to a lower overpassed roadway or the like comprising A. a rectangular bridge span having transverse ends perpendicular to its longitudinal axis and having 1. longitudinal beams longitudInally spaced supporting a bridge deck, 2. transverse diaphragms connecting longitudinally spaced pairs of said longitudinal beams 3. transverse end diaphragms supporting terminal ones of said longitudinal beams and each forming a perpendicular transverse end of said bridge span and incorporating end anchorage means for receiving post-tensioning tendons of the bridge span, accomodating tendon cable ends for convenient non-skewed post tensioning, B. an abutment for supporting the end of the rectangular bridge span and having 1. a first support wall transverse to the bridge span axis and engagingly supporting a major portion of the transverse end diaphragm of the bridge span, said first support wall having a first end adjacent to a first bridge span corner furthest removed from the lower roadway, and a second end positioned between the longitudinal axis of the bridge span and the adjacent bridge span corner closest to the lower roadway, C. a second wall positioned substantially parallel to the lower roadway and extending diagonally from said second end of the first support wall to a point adjacent to the outside edge of the upper roadway; and D. a cantilevered abutment slab supported by the second wall and having a portion thereof cantilevered outward from said second wall in juxtaposed relation with the transverse end diaphragm of the bridge span extending beyond said first support wall in cantilever fashion to form an approach to the bridge span.
Claim 2
Dependent Claim
266 words
A bridge for skewed orientation with respect to a lower overpassed roadway or the like comprising A. a rectangular bridge span having transverse ends perpendicular to its longitudinal axis and having 1. longitudinal beams longitudInally spaced supporting a bridge deck, 2. transverse diaphragms connecting longitudinally spaced pairs of said longitudinal beams 3. transverse end diaphragms supporting terminal ones of said longitudinal beams and each forming a perpendicular transverse end of said bridge span and incorporating end anchorage means for receiving post-tensioning tendons of the bridge span, accomodating tendon cable ends for convenient non-skewed post tensioning, B. an abutment for supporting the end of the rectangular bridge span and having 1. a first support wall transverse to the bridge span axis and engagingly supporting a major portion of the transverse end diaphragm of the bridge span, said first support wall having a first end adjacent to a first bridge span corner furthest removed from the lower roadway, and a second end positioned between the longitudinal axis of the bridge span and the adjacent bridge span corner closest to the lower roadway, C. a second wall positioned substantially parallel to the lower roadway and extending diagonally from said second end of the first support wall to a point adjacent to the outside edge of the upper roadway; and D. a cantilevered abutment slab supported by the second wall and having a portion thereof cantilevered outward from said second wall in juxtaposed relation with the transverse end diaphragm of the bridge span extending beyond said first support wall in cantilever fashion to form an approach to the bridge span.
Claim 3
Dependent Claim
10 words
transverse diaphragms connecting longitudinally spaced pairs of said longitudinal beams
Claim 4
Dependent Claim
10 words
transverse diaphragms connecting longitudinally spaced pairs of said longitudinal beams
Claim 5
Dependent Claim
39 words
An abutment as defined in claim 1 and further comprising: D. expansion bearings positioned between the first support wall and the transverse end diaphragm of the bridge span supported thereon permitting movement of the bridgespan relative to the abutment.
Claim 6
Dependent Claim
57 words
transverse end diaphragms supporting terminal ones of said longitudinal beams and each forming a perpendicular transverse end of said bridge span and incorporating end anchorage means for receiving post-tensioning tendons of the bridge span, accomodating tendon cable ends for convenient non-skewed post tensioning, B. an abutment for supporting the end of the rectangular bridge span and having
Claim 7
Dependent Claim
57 words
transverse end diaphragms supporting terminal ones of said longitudinal beams and each forming a perpendicular transverse end of said bridge span and incorporating end anchorage means for receiving post-tensioning tendons of the bridge span, accomodating tendon cable ends for convenient non-skewed post tensioning, B. an abutment for supporting the end of the rectangular bridge span and having
Claim 8
Dependent Claim
46 words
A bridge span as defined in claim 2 and further comprising: E. an expansion joint joining the transverse end diaphragm of the bridge span and the abutment slab adjacent thereto, said expansion joint thereby lying transverse to the bridge span and consequently being of minimum length.
Claim 9
Dependent Claim
65 words
An abutment as defined in claim 1 wherein the cantilevered portion of the abutment slab is provided with reinforcing steel dimensioned and positioned to provide load deformation characteristics substantially matching those of the adjacent transverse end of the bridge span, whereby the slab is designed for load deformation movement corresponding to similar movement of the cantilevered portion of the bridge span under varying load conditions.