Detail design of structural node of prestressed reinforced concrete T-beam anti-collision guardrail

Detail drawing of prestressed reinforced concrete T-beam abutment cap reinforcement structure node

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 prestressed reinforced concrete T-beam abutment cushion cap reinforcement structure node

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.

Detailed drawing of prestressed reinforced concrete T-beam abutment pile foundation reinforcement structure node

Detail drawing of prestressed reinforced concrete T-beam abutment back wall reinforcement structure node

Detail drawing of prestressed reinforced concrete T-beam abutment side wall reinforcement structure node

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.

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.

Detail drawing of prestressed reinforced concrete T-beam abutment ear and back wall reinforcement structure node

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 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.

The bridge is located in xx Village, xx Town, xx County, close to the National Highway 319, with convenient traffic conditions. The starting and ending chainages of the bridge are K75+706.611 ～ K75+986m. There is a long route chain (K75+725.939=K75+707.328) on the bridge, with a total length of 296m. The plane of the bridge is located on the circular curve of the main line R=1020m; The longitudinal slope on the bridge is 1.365% and - 3.7% respectively; Piers and abutments are arranged radially. The whole bridge is divided into two parts: (3x40) m+(4x40) m; The superstructure adopts prestressed concrete (post tensioned) T beam, and adopts the method of "simple support first and then structural continuity" for construction; The substructure abutment adopts U-shaped abutment and open cut expanded foundation; Column piers and rock socketed dug pile foundations are adopted for bridge piers. 　　

Detail drawing of 20m prestressed concrete continuous box girder anti-collision guardrail reinforcement structure node

This drawing is a general structural drawing of T-beam of prestressed concrete continuous beam bridge, 3 sheets in total

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.

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.

Detail drawing of prestressed reinforced concrete T-beam abutment back backfill node

Detailed drawing of prestressed reinforced concrete T-beam carriageway slab reinforcement structure node

3、 Main technical indicators 1. Design load: highway level II 2. Seismic standard: seismic intensity 7o 3. Net width of bridge deck: net 7m+2 × 1m 4. Span: 25m 1. Superstructure: longitudinal gradient of bridge is 0.6%, transverse gradient is 1.5%, bridge deck width is 9m, main beam section is T-beam, and beam height 1.75m adopts the construction method of simply supported to continuous. Since the construction method of simply supported to continuous is adopted, the main beam shall be prefabricated first, then transported and hoisted in place. Therefore, the lifting capacity during construction shall be taken into consideration when arranging the cross section, and the whole bridge shall be made into five T beams of equal section. 2. Structural analysis: internal force calculation and analysis using Dr. Bridge

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.

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.

3、 Main technical indicators 1. Design load: highway level II 2. Seismic standard: seismic intensity 7o 3. Net width of bridge deck: net 7m+2 × 1m 4. Span: 25m 1. Superstructure: longitudinal gradient of bridge is 0.6%, transverse gradient is 1.5%, bridge deck width is 9m, main beam section is T-beam, and beam height 1.75m adopts the construction method of simply supported to continuous. Since the construction method of simply supported to continuous is adopted, the main beam shall be prefabricated first, then transported and hoisted in place. Therefore, the lifting capacity during construction shall be taken into consideration when arranging the cross section, and the whole bridge shall be made into five T beams of equal section. 2. Structural analysis: internal force calculation and analysis using Dr. Bridge

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.

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.