Construction design organization scheme of prestressed reinforced concrete cap beam

• Prepared in: 2009

Content introduction II. Design basis: 1. General Code for Design of Highway Bridges and Culverts JTGD60-2004; 2. Code for Design of Highway Reinforced Concrete and Prestressed Concrete Bridges and Culverts JTGD62-2004; 3. Design standard: 1. Control elevation: road elevation at both ends of the bridge is 2.50m; 2 Bridge width: 12.6m (2X3.5m carriageway+2X2.5m sidewalk+2X0.30 wheel guard belt) 3. Bridge span type: 12m (reinforced concrete prestressed hollow slab beam), single span simply supported beam bridge. Bridge Plan Abutment Capping Beam Structure Diagram

A separate bridge is designed at ZK35+808 (YK35+769) of the contract section. The design mileage of the left track is from ZK35+540 to ZK36+076, with a total length of 536m and a central stake of ZK35+808; The design mileage of the right track starts from YK35+525 to YK36+013, with a total length of 488m, and the center mileage is YK35+769. The superstructure of the main bridge on the left line uses (4 × 40+4 × 40+5 × 40) m continuous T beam, and the superstructure of the main bridge on the right line uses (4 × 40+4 × 40+4 × 40) m continuous T beam, which is constructed by the method of "simple support first and continuous". The substructure on the left line uses double column, pile foundation, and the abutment uses U-shaped gravity abutment and expanded foundation; The substructure of the right line adopts double column and pile foundation, and the abutment adopts pile column abutment and U-shaped gravity abutment, pile foundation and expanded foundation. The bridge was commenced on June 16, 2006 and completed on April 20, 2009.

There are 1 drawing in total, including construction description of prestressed reinforced concrete pipe pile, pile top detail drawing and pile head detail drawing.

A separate bridge is designed at ZK35+808 (YK35+769) of the contract section. The design mileage of the left track is from ZK35+540 to ZK36+076, with a total length of 536m and a central stake of ZK35+808; The design mileage of the right track starts from YK35+525 to YK36+013, with a total length of 488m, and the center mileage is YK35+769. The superstructure of the main bridge on the left line uses (4 × 40+4 × 40+5 × 40) m continuous T beam, and the superstructure of the main bridge on the right line uses (4 × 40+4 × 40+4 × 40) m continuous T beam, which is constructed by the method of "simple support first and continuous". The substructure on the left line uses double column, pile foundation, and the abutment uses U-shaped gravity abutment and expanded foundation; The substructure of the right line adopts double column and pile foundation, and the abutment adopts pile column abutment and U-shaped gravity abutment, pile foundation and expanded foundation. The bridge was commenced on June 16, 2006 and completed on April 20, 2009.

Detailed drawing of general structural node of prestressed reinforced concrete T-beam bridge pier

A bridge is designed at K33+568 of the contract section, which crosses the xx River and runs 295 °. The design mileage starts from K33+483 to K33+653m, with a total length of 170m, 4 spans in total, and the central stake is K33+568. The bridge is a single track double width bridge. Since the bridge is located on the acceleration and deceleration lane of the service area, the left and right sides are widened by 2.5 meters, the bridge deck width is 2 × 13.5 meters, and the starting abutment is 7 meters long and 29.5 meters wide; The end abutment is 3m long and 29.5m wide. This bridge is located on a straight line. The longitudinal slopes on the bridge are - 2.366% and 2.8%, and the cross slope of the bridge deck is ± 2%. The method of setting cross slope by capping beam is adopted for adjustment. The superstructure of the main bridge adopts (4 × 6 × 40+4 × 6 × 40) m continuous T-beam, which is constructed by the method of "simple support first and then continuous", and the pier of the substructure adopts three column and pile foundation.

A bridge is designed at K33+568 of the contract section, which crosses the xx River and runs 295 °. The design mileage starts from K33+483 to K33+653m, with a total length of 170m, 4 spans in total, and the central stake is K33+568. The bridge is a single track double width bridge. Since the bridge is located on the acceleration and deceleration lane of the service area, the left and right sides are widened by 2.5 meters, the bridge deck width is 2 × 13.5 meters, and the starting abutment is 7 meters long and 29.5 meters wide; The end abutment is 3m long and 29.5m wide. This bridge is located on a straight line. The longitudinal slopes on the bridge are - 2.366% and 2.8%, and the cross slope of the bridge deck is ± 2%. The method of setting cross slope by capping beam is adopted for adjustment. The superstructure of the main bridge adopts (4 × 6 × 40+4 × 6 × 40) m continuous T-beam, which is constructed by the method of "simple support first and then continuous", and the pier of the substructure adopts three column and pile foundation.

A bridge is designed at K33+568 of the contract section, which crosses the xx River and runs 295 °. The design mileage starts from K33+483 to K33+653m, with a total length of 170m, 4 spans in total, and the central stake is K33+568. The bridge is a single track double width bridge. Since the bridge is located on the acceleration and deceleration lane of the service area, the left and right sides are widened by 2.5 meters, the bridge deck width is 2 × 13.5 meters, and the starting abutment is 7 meters long and 29.5 meters wide; The end abutment is 3m long and 29.5m wide. This bridge is located on a straight line. The longitudinal slopes on the bridge are - 2.366% and 2.8%, and the cross slope of the bridge deck is ± 2%. The method of setting cross slope by capping beam is adopted for adjustment. The superstructure of the main bridge adopts (4 × 6 × 40+4 × 6 × 40) m continuous T-beam, which is constructed by the method of "simple support first and then continuous", and the pier of the substructure adopts three column and pile foundation.

Detailed drawing of structural node of prestressed reinforced concrete T-beam support

A separate bridge is designed at ZK35+808 (YK35+769) of the contract section. The design mileage of the left track is from ZK35+540 to ZK36+076, with a total length of 536m and a central stake of ZK35+808; The design mileage of the right track starts from YK35+525 to YK36+013, with a total length of 488m, and the center mileage is YK35+769. The superstructure of the main bridge on the left line uses (4 × 40+4 × 40+5 × 40) m continuous T beam, and the superstructure of the main bridge on the right line uses (4 × 40+4 × 40+4 × 40) m continuous T beam, which is constructed by the method of "simple support first and continuous". The substructure on the left line uses double column, pile foundation, and the abutment uses U-shaped gravity abutment and expanded foundation; The substructure of the right line adopts double column and pile foundation, and the abutment adopts pile column abutment and U-shaped gravity abutment, pile foundation and expanded foundation.

Technical index 1. Design load: automobile - Class 20, trailer - 100 2. Design key points for subgrade width of 12m 1. The internal force calculation and reinforcement design of highway prestressed concrete skew simply supported beam (slab) bridge are carried out in this drawing. 2. This drawing adopts the continuous structure of simply supported slab back wall bridge deck. 3. The stress of main beam under operation is calculated according to the joint force of precast slab, hinge joint and integral cast-in-place concrete